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Journal articles on the topic 'OARS'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

George, Linda K., and Gerda G. Fillenbaum. "OARS Methodology." Journal of the American Geriatrics Society 33, no. 9 (1985): 607–15. http://dx.doi.org/10.1111/j.1532-5415.1985.tb06317.x.

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Huynh, Pauline P., Elias Saba, Alexander Rivero, Robert Peralta, and Jonathan Liang. "A Biologic With Otologic Consequences: Analysis of Hearing Loss and Teprotumumab Using the FDA Adverse Event Reporting System." Otology & Neurotology 45, no. 8 (2024): e566-e569. http://dx.doi.org/10.1097/mao.0000000000004260.

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Objectives To evaluate otologic adverse reactions (OARs), including hearing loss (OARs-HL) among patients taking teprotumumab, a new biologic approved for the treatment of active thyroid eye disease, using publicly available pharmacovigilance reporting data. Study Design Retrospective database review Methods The Food and Drug Administration Adverse Events Reporting System (FAERS) was queried for cases involving teprotumumab from 2020Q1 to 2023Q1. Patient demographics and adverse reactions (OAR and OAR-HL) were evaluated. Logistic regression was used to predict OAR and OAR-HL, and disproportion

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Banaei, Amin, Bijan Hashemi, Mohsen Bakhshandeh, and Bahram Mofid. "Trade-off between the conflicting planning goals in correlation with patient’s anatomical parameters for intensity-modulated radiotherapy of prostate cancer patients." Journal of Radiotherapy in Practice 18, no. 03 (2019): 232–38. http://dx.doi.org/10.1017/s1460396919000025.

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AbstractAimTo quantify the relationship between the planning target volume (PTV) dose homogeneity and organs at risk (OARs) sparing in correlation with anatomical parameters in prostate intensity-modulated radiotherapy (IMRT).Materials and methodsNine IMRT plans with various target dose constraints’ priorities were created for 15 prostate cancer patients. Selected PTV and OARs parameters were calculated for the patients. A trade-off was assessed between homogeneity index (HI) and OAR sparing. Several anatomical parameters were evaluated to investigate their effects on the OAR sparing and HI.Re

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David, Shannon, Kim Gray, Jeffrey A. Russell, and Chad Starkey. "Validation of the Ottawa Ankle Rules for Acute Foot and Ankle Injuries." Journal of Sport Rehabilitation 25, no. 1 (2016): 48–51. http://dx.doi.org/10.1123/jsr.2014-0253.

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The original and modified Ottawa Ankle Rules (OARs) were developed as clinical decision rules for use in emergency departments. However, the OARs have not been evaluated as an acute clinical evaluation tool.Objective:To evaluate the measures of diagnostic accuracy of the OARs in the acute setting.Methods:The OARs were applied to all appropriate ankle injuries at 2 colleges (athletics and club sports) and 21 high schools. The outcomes of OARs, diagnosis, and decision for referral were collected by the athletic trainers (ATs) at each of the locations. Contingency tables were created for evaluati

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Thakur, Abhishek Kumar, and Prakriti Raj Kandel. "Reliability of ‘Ottawa Ankle Rules’ in Acute Ankle and Midfoot Injuries." Journal of Universal College of Medical Sciences 10, no. 01 (2022): 33–36. http://dx.doi.org/10.3126/jucms.v10i01.47218.

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INTRODUCTIONThe Ottawa ankle rules (OARs) are clinical decision guidelines used to identify whether patients with ankle injuries need to undergo radiography. The OARs have been proven that their application reduces unnecessary radiography. MATERIAL & METHODSThis prospective study was conducted at Sumeru City Hospital, Lalitpur in the Department of Emergency and Outpatient Department of Orthopaedics. Thirty-six patients were included in the study. Twenty-five patients were in ankle group and 11 patients were in midfoot group. All patients were sent for X-rays after evaluating them according

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Barbara, Rita. "CROSS-CULTURAL VALIDATION OF THE OARS INSTRUMENT FOR THE ASSESSMENT OF ELDERLY ANGOLANS." Innovation in Aging 7, Supplement_1 (2023): 1013. http://dx.doi.org/10.1093/geroni/igad104.3255.

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Abstract Background The Older Americans Resources and Services (OARS) instrument is widely used internationally, but requires validation in specific contexts, such as Angola. This study aims to cross-culturally validate the OARS for assessing elderly Angolans. Methods The cognitive and functional domains of the OARS were cross-culturally adapted, followed by psychometric analysis on a representative sample. Domains of activities of daily living and mental health were evaluated. Internal reliability was assessed using Cronbach’s alpha coefficient, resulting in 0.80 for activities of daily livin

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Xu, Gang, Yuan-Yuan Zhang, Gui-Xiang Gu, Guo-Qing Yang та Gong-Yin Ye. "Molecular and Pharmacological Characterization of β-Adrenergic-like Octopamine Receptors in the Endoparasitoid Cotesia chilonis (Hymenoptera: Braconidae)". International Journal of Molecular Sciences 23, № 23 (2022): 14513. http://dx.doi.org/10.3390/ijms232314513.

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Octopamine (OA) is structurally and functionally similar to adrenaline/noradrenaline in vertebrates, and OA modulates diverse physiological and behavioral processes in invertebrates. OA exerts its actions by binding to specific octopamine receptors (OARs). Functional and pharmacological characterization of OARs have been investigated in several insects. However, the literature on OARs is scarce for parasitoids. Here we cloned three β-adrenergic-like OARs (CcOctβRs) from Cotesia chilonis. CcOctβRs share high similarity with their own orthologous receptors. The transcript levels of CcOctβRs were

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Lindquist, Ulla-Carin. "Rowing without Oars." Academic Medicine 82, no. 6 (2007): 594. http://dx.doi.org/10.1097/acm.0b013e31805567d6.

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Chandrappa, Vasantha Raju N., and Harinarayana N. S. "Status of Open Access Repositories in the Maritime Field." DESIDOC Journal of Library & Information Technology 44, no. 6 (2024): 433–40. https://doi.org/10.14429/djlit.44.6.20080.

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Maritime is a domain dealing with marine engineering, navigation, shipping and ports, ocean engineering, logistics and transportation and many other areas. Maritime domain has not been much explored in terms of its Open Access (OA) related content. Open Access Resources (OAR) have contributed immensely in making available vital information freely accessible on the web. The OpenDOAR serves as a quality-assured global directory of open access repositories, providing open access to academic research outputs and other electronic resources. This study assesses the expansion and evolution of OARs in

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Quintero Quintero, Alfonso, and Edwin Rozo Albarracin. "New method to optimize protection of the organs at risk allows to regain coverage and homogeneity in the Planning Target Volume." Revista Brasileira de Física Médica 17 (December 30, 2023): 701. http://dx.doi.org/10.29384/rbfm.2023.v17.19849001701.

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The construction of auxiliary structures within the Planning Target Volume (PTV) is proposed as a method to recover coverage and homogeneity, and to optimize the protection of the organs at risk (OARs) in radiotherapy treatment plans. To this purpose, it was performed the Volumetric Modulated Arc Therapy (VMAT) treatment planning of the “mock prostate” test. Three plans were optimized in the EclipseTM treatment planning system. In plan 1 (P1), it was defined an initial objective function only for the PTV. Then, the dose received by the OARs was restricted, guaranteeing the PTV level of coverag

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Dwivedi, R., and SB Ale. "Evaluation of the Accuracy of “Ottawa Ankle Rules” for Predicting Fractures in Acute Ankle and Midfoot Injuries." Journal of Universal College of Medical Sciences 2, no. 2 (2014): 2–5. http://dx.doi.org/10.3126/jucms.v2i2.11166.

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INTRODUCTION: Twisting injuries of ankle and foot are one of the most common injuries seen in emergency department and are the most common sports injuries. Almost all such cases are investigated by X-rays to rule out fractures, but clinically significant fractures are detected only in a small number of cases (approximately 15%). Ottawa Ankle Rules (OARs) are screening tools, applied in acute ankle and foot injuries to exclude those cases that are not likely to have fractures and thereby reduce the number of unnecessary X-rays. At the same time, all clinically significant fractures are included

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Eitan, Tal, Nicholas J. Damico, Rajesh Pidikiti, et al. "Reirradiation for Recurrent Scalp Angiosarcoma: Dosimetric Advantage of PBT over VMAT and EBT." International Journal of Particle Therapy 6, no. 3 (2019): 13–18. http://dx.doi.org/10.14338/ijpt-19-00074.

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Abstract Purpose: Reirradiation in the scalp area can be challenging given the proximity to organs at risk (OARs), such as the eye and brain. Our aim is to evaluate the dosimetric differences of volumetric modulated arc therapy (VMAT) and electron beam therapy (EBT) compared with 3-dimensional proton beam therapy (PBT). Patients and Methods: We evaluated a patient with recurrent angiosarcoma of the left temporal scalp after prior surgical resections and radiation therapy to 60 Gy in 30 fractions who needed reirradiation. We generated VMAT, EBT, and PBT plans using the Pinnacle Treatment Planni

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Baumann, Brian C., Walter Bosch, Amit Bahl, et al. "Development and validation of contouring guidelines for post-cystectomy adjuvant radiation of bladder cancer." Journal of Clinical Oncology 34, no. 2_suppl (2016): 409. http://dx.doi.org/10.1200/jco.2016.34.2_suppl.409.

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409 Background: Several organizations are developing clinical trials to evaluate adjuvant radiotherapy (RT) for bladder cancer patients at elevated risk of locoregional failure (LF). However, the clinical target volumes (CTVs) & organs at risk (OARs) for this treatment have not been defined in detail. Our purpose was to define multi-institutional consensus CTVs & OARs for male & female bladder cancer patients undergoing adjuvant RT in clinical trials. Methods: We convened a multi-disciplinary group of bladder cancer specialists from 9 centers in 3 countries. 5 radiation oncologists

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Shen, Jing, Yinjie Tao, Hui Guan, et al. "Clinical Validation and Treatment Plan Evaluation Based on Autodelineation of the Clinical Target Volume for Prostate Cancer Radiotherapy." Technology in Cancer Research & Treatment 22 (January 2023): 153303382311648. http://dx.doi.org/10.1177/15330338231164883.

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Purpose Clinical target volumes (CTVs) and organs at risk (OARs) could be autocontoured to save workload. This study aimed to assess a convolutional neural network for automatic and accurate CTV and OARs in prostate cancer, while comparing possible treatment plans based on autocontouring CTV to clinical treatment plans. Methods Computer tomography (CT) scans of 217 patients with locally advanced prostate cancer treated at our hospital were retrospectively collected and analyzed from January 2013 to January 2019. A deep learning-based method, CUNet, was used to delineate CTV and OARs. A trainin

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Rahman, Azmi, Louise Strickland, Hemant Pandit, Crispin Jenkinson, and David Murray. "DIFFERENCES IN EARLY RECOVERY FOLLOWING UNICOMPARTMENTAL KNEE ARTHROPLASTY WITH DAY-CASE AND STANDARD CARE PATHWAYS, ASSESSED USING NOVEL PATIENT-REPORTED MEASURES." Orthopaedic Proceedings 105-B, SUPP_13 (2023): 40. http://dx.doi.org/10.1302/1358-992x.2023.13.040.

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AbstractBackgroundDaycase pathways which aim to discharge patients the same day following Unicompartmental Knee Replacement have been introduced in some centres, though most continue with Standard pathways. While Daycase pathways have cost savings, recovery data comparing pathways is limited. This study aims to compare patient-reported early recovery between Daycase and Standard pathways following UKR.MethodThis study was carried out in two centres that originally used the same Standard recovery pathway for UKR. In one centre, the Standard pathway was modified into a Daycase pathway. 26 Daycas

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Bárbara, Rita, Rui Gonçalves, Carlos Sousa, Luciano Chingui, Antonio Armando, and Mario Lopes. "VALIDITY AND RELIABILITY OF THE MULTIDIMENSIONAL FUNCTIONAL ASSESSMENT QUESTIONNAIRE (OARS) IN ANGOLAN ELDERLY." Innovation in Aging 8, Supplement_1 (2024): 1227. https://doi.org/10.1093/geroni/igae098.3926.

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Abstract Introduction The Older American Resources and Services (OARS) questionnaire assesses functionality and cognition in the elderly. Validating and culturally adapting instruments like the OARS is crucial to ensure their accuracy across different contexts. Objective: This study aimed to translate, culturally adapt, and validate the OARS for elderly individuals in Angola, focusing on cognitive and functional domains. Methods The adaptation of the OARS involved a rigorous process, including translation, cultural adaptation, and clinimetric analysis. A multidisciplinary panel of experts, inc

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Labbé, Romain, Jean-Philippe Boucher, Christophe Clanet, and Michael Benzaquen. "Physics of rowing oars." New Journal of Physics 21, no. 9 (2019): 093050. http://dx.doi.org/10.1088/1367-2630/ab4226.

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18

Golden, Sierra. "The Sound of Oars." Ploughshares 40, no. 4 (2014): 47. http://dx.doi.org/10.1353/plo.2014.0068.

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Spieler, Benjamin Oren, Nancy El Bared, Kyle Padgett, Karen Moya Brown, Lorraine Portelance, and Eric Albert Mellon. "Adaptive versus non-adaptive MRI-guided radiation treatments for pancreatic cancer: A dosimetric study." Journal of Clinical Oncology 36, no. 4_suppl (2018): 336. http://dx.doi.org/10.1200/jco.2018.36.4_suppl.336.

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336 Background: Combination MRI and radiation therapy systems enable magnetic resonance image guided radiation therapy (MR-IGRT). MR-IGRT allows clear visualization of the target and organs at risk (OARs) allowing for dose adaptation. Using adaptive MR-IGRT with Cobalt-60 for stereotactic body radiation therapy (SBRT) in locally advanced pancreatic cancer (LAPC), we hypothesized that MR-IGRT would improve dose to pancreatic tumor without increasing doses to OARs. Methods: Ten LAPC patients received five fraction SBRT with a total dose of 33-40 Gy. For each fraction, the original plan dose was

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Sanjay Kalra, Atul Dhingra, and Nitin Kapoor. "Obesity Associated Reproductive and Sexual Syndrome(OARS) in Men." Journal of the Pakistan Medical Association 74, no. 11 (2024): 2016–17. http://dx.doi.org/10.47391/jpma.24-91.

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Obesity, which has emerged as a major global public healthchallenge, is associated with myriad medical andmultisystemic complications. Obesity impacts the malereproductive and sexual function in multiple ways as well.However, perhaps because of the focus on cardiovascularand metabolic health, the gonadal aspects of obesitymedicine have not been given due attention. We proposethe term OARS to describe obesity-associated reproductiveand sexual syndrome in men living with obesity. OARS canbe defined as a constellation of functional, hormonal, andstructural abnormalities that affect the reproducti

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Marquez, Barbara, Zachary T. Wooten, Ramon M. Salazar, et al. "Analyzing the Relationship between Dose and Geometric Agreement Metrics for Auto-Contouring in Head and Neck Normal Tissues." Diagnostics 14, no. 15 (2024): 1632. http://dx.doi.org/10.3390/diagnostics14151632.

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This study aimed to determine the relationship between geometric and dosimetric agreement metrics in head and neck (H&N) cancer radiotherapy plans. A total 287 plans were retrospectively analyzed, comparing auto-contoured and clinically used contours using a Dice similarity coefficient (DSC), surface DSC (sDSC), and Hausdorff distance (HD). Organs-at-risk (OARs) with ≥200 cGy dose differences from the clinical contour in terms of Dmax (D0.01cc) and Dmean were further examined against proximity to the planning target volume (PTV). A secondary set of 91 plans from multiple institutions valid

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Ng, Curtise K. C., Vincent W. S. Leung, and Rico H. M. Hung. "Clinical Evaluation of Deep Learning and Atlas-Based Auto-Contouring for Head and Neck Radiation Therapy." Applied Sciences 12, no. 22 (2022): 11681. http://dx.doi.org/10.3390/app122211681.

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Various commercial auto-contouring solutions have emerged over past few years to address labor-intensiveness, and inter- and intra-operator variabilities issues of traditional manual anatomy contouring for head and neck (H&N) radiation therapy (RT). The purpose of this study is to compare the clinical performances between RaySearch Laboratories deep learning (DL) and atlas-based auto-contouring tools for organs at risk (OARs) segmentation in the H&N RT with the manual contouring as reference. Forty-five H&N computed tomography datasets were used for the DL and atlas-based auto-cont

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Alfitra, Lira Senja, Suwandi, and Idam Arif. "IMRT Planning Using 5, 7 and 9 Radiation Field Directions for Nasopharyngeal Cancer Cases." Journal of Physics: Conference Series 2734, no. 1 (2024): 012001. http://dx.doi.org/10.1088/1742-6596/2734/1/012001.

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Abstract Nasopharyngeal carcinoma (NPC) is one of the deadliest cancers in the world. In treating NPC, Intensity Modulated Radiation Therapy (IMRT) uses radiation fields from several directions to kill cancer cells and shrink tumours. IMRT requires accurate planning using the Treatment Planning System (TPS) to avoid organs at risk (OARs) around the nasopharyngeal cavity. The purpose of this study is to analyse the results of different number of radiation field directions in treatment planning for nasopharyngeal cancer using IMRT. The study focuses on the distribution of dose in the target tumo

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Wu, Ailin, Du Tang, Aidong Wu, Yunqin Liu, Liting Qian, and Lei Zhu. "Comparison of the Dosimetric Influence of Applicator Displacement on 2D and 3D Brachytherapy for Cervical Cancer Treatment." Technology in Cancer Research & Treatment 20 (January 2021): 153303382110412. http://dx.doi.org/10.1177/15330338211041201.

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To compare the dosimetric influence of applicator displacement on two-dimensional brachytherapy (2D-BT) and three-dimensional brachytherapy (3D-BT) for cervical cancer. Nineteen patients who received computed tomography-guided tandem-and-ovoid (T&O) brachytherapy were retrospectively selected. Both 2D (point-based) and 3D (volume-based) plans with and without virtual applicator displacement in the 3 axes were created for each patient. Dose changes at point A, D90 of the high-risk clinical target volume (HR-CTV) and intermediate-risk CTV (IR-CTV), and the D0.1cc, D1cc, D2cc, and D5cc of org

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Chow, James C. L., Runqing Jiang, and Lu Xu. "Evaluation of plan optimisers in prostate VMAT using the dose distribution index." Journal of Radiotherapy in Practice 18, no. 4 (2019): 323–28. http://dx.doi.org/10.1017/s1460396919000098.

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AbstractPurpose:Dose distribution index (DDI) is a treatment planning evaluation parameter, reflecting dosimetric information of target coverage that can help to spare organs at risk (OARs) and remaining volume at risk (RVR). The index has been used to evaluate and compare prostate volumetric modulated arc therapy (VMAT) plans using two different plan optimisers, namely photon optimisation (PO) and its predecessor, progressive resolution optimisation (PRO).Materials and methods:Twenty prostate VMAT treatment plans were created using the PO and PRO in this retrospective study. The 6 MV photon b

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Troost, Esther G. C., Krista C. J. Wink, Erik Roelofs, et al. "Photons or protons for reirradiation in (non-)small cell lung cancer: Results of the multicentric ROCOCO in silico study." British Journal of Radiology 93, no. 1107 (2020): 20190879. http://dx.doi.org/10.1259/bjr.20190879.

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Objective: Locally recurrent disease is of increasing concern in (non-)small cell lung cancer [(N)SCLC] patients. Local reirradiation with photons or particles may be of benefit to these patients. In this multicentre in silico trial performed within the Radiation Oncology Collaborative Comparison (ROCOCO) consortium, the doses to the target volumes and organs at risk (OARs) were compared when using several photon and proton techniques in patients with recurrent localised lung cancer scheduled to undergo reirradiation. Methods: 24 consecutive patients with a second primary (N)SCLC or recurrent

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Sharma, P. K., Roopam Srivastava, and Laishram Suchitra. "Validation of moving target doses using ArcCHECK Planned Dose Perturbation Algorithm." JOURNAL OF ADVANCES IN PHYSICS 9, no. 2 (2015): 2348–54. http://dx.doi.org/10.24297/jap.v9i2.1392.

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Â The aim of the study is to use Planned Dose Perturbation (PDPâ„¢) measurement-guided reconstruction method to estimate dynamic 4D dose and evaluate both 3D dose and DVH changes caused by target motion resulting from respiration. Five patients of Ca lung were selected for the study. Target and Organ at risks were (OARs) delineated on 4DCT data set of each patient. Dose of moving target vs. stationary target were simulated and compared for OARs and target by analyzing 3D dose and DVH(Dose Volume Histogram).There was almost 3.5% higher target maximum doses measured with moving target after appl

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Dabaja, Bouthaina Shbib, Bradford S. Hoppe, John P. Plastaras, et al. "Proton therapy for adults with mediastinal lymphomas: the International Lymphoma Radiation Oncology Group guidelines." Blood 132, no. 16 (2018): 1635–46. http://dx.doi.org/10.1182/blood-2018-03-837633.

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Abstract Among adult lymphoma survivors, radiation treatment techniques that increase the excess radiation dose to organs at risk (OARs) put patients at risk for increased side effects, especially late toxicities. Minimizing radiation to OARs in adults patients with Hodgkin and non-Hodgkin lymphomas involving the mediastinum is the deciding factor for the choice of treatment modality. Proton therapy may help to reduce the radiation dose to the OARs and reduce toxicities, especially the risks for cardiac morbidity and second cancers. Because proton therapy may have some disadvantages, identifyi

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Mermut, Özlem, Aysun Ozsoy Ata, and Didem Can Trabulus. "Quantitative and dosimetric analysis for treating synchronous bilateral breast cancer using two radiotherapy planning techniques." Polish Journal of Medical Physics and Engineering 27, no. 3 (2021): 201–6. http://dx.doi.org/10.2478/pjmpe-2021-0024.

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Abstract Objective: We compared mono-isocenter and dual-isocenter plans in synchronous bilateral breast cancer (SBBC), which is defined as tumours occurring simultaneously in both breasts, and evaluated the effects of these differences in plans on organs-at-risk (OARs). Materials and methods: We evaluated 10 women with early stage, nod negative (Tis-2N0M0) SBBC. The treatment dose was determined to be 50 Gy. We used mean dose and VXGy to evaluate the OARs. To evaluate the effectiveness of treatment plans, Homogeneity index (HI), conformity index (CI) and sigma index (SI) and monitor units (MU)

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Sumida, Iori, Hajime Yamaguchi, Indra J. Das, et al. "Evaluation of the radiobiological gamma index with motion interplay in tangential IMRT breast treatment." Journal of Radiation Research 57, no. 6 (2016): 691–701. http://dx.doi.org/10.1093/jrr/rrw073.

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Abstract The purpose of this study was to evaluate the impact of the motion interplay effect in early-stage left-sided breast cancer intensity-modulated radiation therapy (IMRT), incorporating the radiobiological gamma index (RGI). The IMRT dosimetry for various breathing amplitudes and cycles was investigated in 10 patients. The predicted dose was calculated using the convolution of segmented measured doses. The physical gamma index (PGI) of the planning target volume (PTV) and the organs at risk (OAR) was calculated by comparing the original with the predicted dose distributions. The RGI was

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Tsang, Shirley W. S., Mark Collins, Jacky T. L. Wong, and George Chiu. "A dosimetric comparison of craniospinal irradiation using TomoDirect radiotherapy, TomoHelical radiotherapy and 3D conventional radiotherapy." Journal of Radiotherapy in Practice 16, no. 4 (2017): 391–402. http://dx.doi.org/10.1017/s1460396917000309.

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AbstractAimThe purpose of this study was to dosimetrically compare TomoDirect, TomoHelical and linear accelerator-based 3D-conformal radiotherapy (Linac-3DCRT) for craniospinal irradiation (CSI) in the treatment of medulloblastoma.MethodsFive CSI patients were replanned with Linac-3DCRT, TomoHelical, TomoDirect-3DCRT and TomoDirect-intensity-modulated radiotherapy (IMRT). Dose of 36 Gy in 20 fractions was prescribed to the planning target volume (PTV). Homogeneity index (HI), non-target integral dose (NTID), dose–volume histograms, organs-at-risk (OARs)Dmax,Dmeanand treatment times were compar

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Nolte, Volker. "Shorter Oars Are More Effective." Journal of Applied Biomechanics 25, no. 1 (2009): 1–8. http://dx.doi.org/10.1123/jab.25.1.1.

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The purpose of this investigation was to clarify the effects of blade design and oar length on performance in rowing. Biomechanical models and equations of motion were developed to identify the main forces that affect rowing performance. In addition, the mechanical connection between the propelling blade force and the force that the rower applies on the handle was established. On this basis it was found that the blade design and oar dimensions play a significant role on the rowing performance. While rowers have found empirically that larger and/or hydrodynamically more efficient blade shapes n

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Cheung, Eva Y. W., Shirley S. H. Ng, Sapphire H. Y. Yung, Dominic Y. T. Cheng, Fandy Y. C. Chan, and Janice K. Y. Cheng. "Multi-Planar VMAT Plans for High-Grade Glioma and Glioblastoma Targeting the Hypothalamic-Pituitary Axis Sparing." Life 12, no. 2 (2022): 195. http://dx.doi.org/10.3390/life12020195.

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Background: This study aimed to identify the better arc configuration of volumetric modulated arc therapy (VMAT) for high-grade glioma and glioblastoma, focusing on a dose reduction to the hypothalamic–pituitary axis through an analysis of dose-volumetric parameters, as well as a correlation analysis between the planned target volume (PTV) to organs at risk (OAR) distance and the radiation dose. Method: Twenty-four patients with 9 high-grade glioma and 15 glioblastomas were included in this study. Identical CT, MRI and structure sets of each patient were used for coplanar VMAT (CO-VMAT), dual

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BROOKE, PENNY SIMPSON. "Not chained to the oars." Nursing 32, no. 12 (2002): 28. http://dx.doi.org/10.1097/00152193-200212000-00021.

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Wieman, Henry M. "Rowing Together: OARS and Teamwork." Journal of the American Geriatrics Society 34, no. 6 (1986): 485. http://dx.doi.org/10.1111/j.1532-5415.1986.tb03419.x.

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Delage, David J., Brenda Dean, and Jerry L. Yanz. "Open audiometric reporting standard (OARS)." Journal of the Acoustical Society of America 98, no. 5 (1995): 2883. http://dx.doi.org/10.1121/1.413137.

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Cooke, Roger. "Do Longer Oars Row Farther?" Molecular Cell 10, no. 5 (2002): 966–67. http://dx.doi.org/10.1016/s1097-2765(02)00748-7.

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Kim, Nalee, Jaehee Chun, Jee Suk Chang, Chang Geol Lee, Ki Chang Keum, and Jin Sung Kim. "Feasibility of Continual Deep Learning-Based Segmentation for Personalized Adaptive Radiation Therapy in Head and Neck Area." Cancers 13, no. 4 (2021): 702. http://dx.doi.org/10.3390/cancers13040702.

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This study investigated the feasibility of deep learning-based segmentation (DLS) and continual training for adaptive radiotherapy (RT) of head and neck (H&N) cancer. One-hundred patients treated with definitive RT were included. Based on 23 organs-at-risk (OARs) manually segmented in initial planning computed tomography (CT), modified FC-DenseNet was trained for DLS: (i) using data obtained from 60 patients, with 20 matched patients in the test set (DLSm); (ii) using data obtained from 60 identical patients with 20 unmatched patients in the test set (DLSu). Manually contoured OARs in adap

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Petit, S. F., B. Wu, M. Kazhdan, et al. "The potential of shape-based treatment plan optimization for pancreatic IMRT treatments to spare organs at risk and allow for dose escalation to the tumor PTV." Journal of Clinical Oncology 29, no. 4_suppl (2011): 316. http://dx.doi.org/10.1200/jco.2011.29.4_suppl.316.

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316 Background: Due to the low dose tolerance of the organs at risk (OARs) in the abdomen the tumor dose for pancreatic cancer patient is restricted to 50-60 Gy in 1.8-2.0 Gy fractions when combined with chemotherapy. The goal of this study was to develop a system that can determine the minimal radiation dose to the OARs of each individual patient that is achievable while maintaining adequate tumor coverage. This could guide treatment planners to spare the OARs to the fullest extent. When the minimal doses to the OAR are achieved, the total plan can be upscaled until the normal tissue dose con

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Bárbara, Rita, Rui Gonçalves, and Mario Lopes. "CULTURAL AND PSYCHOMETRIC VALIDATION FOR COGNITIVE ASSESSMENT OF OLDER ADULTS." Innovation in Aging 8, Supplement_1 (2024): 1232–33. https://doi.org/10.1093/geroni/igae098.3944.

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Abstract Introduction Cognitive assessment is vital for the early detection and management of cognitive disorders in older adults. Instruments developed in one cultural context may not be applicable to other populations without proper adaptation. This study aims to culturally adapt the cognitive domain of the Older Americans Resources and Services (OARS) instrument for use with Angolan elderly, ensuring it accurately captures the cultural and specific needs of this group. Objective: The primary goal is to validate the cognitive domain of the OARS for its cultural relevance and clinical reliabi

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Suwandi. "Komparasi Treatment Planning Pada Kanker Leher Rahim Menggunakan Teknik 3DCRT dan IMRT." Jurnal Teras Kesehatan 6, no. 1 (2023): 1–7. http://dx.doi.org/10.38215/jtkes.v6i1.104.

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Kanker merupakan jenis penyakit tidak menular yang masih menjadi masalah kesehatan di dunia termasuk Indonesia. Salah satu jenis kanker yang cukup banyak diderita pasien adalah kanker leher rahim. Sekitar 50 persen penderita kanker di seluruh dunia dilakukan pengobatan menggunakan radioterapi. Dalam pelaksanaannya pengobatan radioterapi meliputi beberapa tahapan yang salah satunya adalah treatment planning. Dewasa ini banyak teknologi pada treatment planning yaitu teknik 2D, 3DCRT, IMRT dan VMAT. Peneltian ini bertujuan untuk menilai perbedaan dosis yang diterima oleh PTV dan OARs pada plannin

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Ye, Jingzhi, Hongyi Li, Meng Zhang, et al. "Oblique Axis Rib Stretch and Curved Planar Reformats in Patients for Rib Fracture Detection and Characterization: Feasibility and Clinical Application." Emergency Medicine International 2023 (August 29, 2023): 1–8. http://dx.doi.org/10.1155/2023/4904844.

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Objective. To assess the use of CT with oblique axis rib stretch (OARS) and curved planar reformats (CPRs) for rib fracture detection and characterization. Methods. A total of 108 forensically diagnosed patients with rib fractures were evaluated retrospectively. OARS and CPRs were independently used during the diagnosis in two groups. In each group, the final diagnosis was made after a junior radiologist’s initial diagnosis was reviewed by a senior radiologist. The images were evaluated for the presence and characterization of rib fractures. Results. A total of 2,592 ribs were analyzed, and 32

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Vyfhuis, Melissa A. L., Mingyao Zhu, Benjamin Agyepong, and Elizabeth M. Nichols. "Techniques for Treating Bilateral Breast Cancer Patients Using Pencil Beam Scanning Technology." International Journal of Particle Therapy 6, no. 2 (2019): 1–11. http://dx.doi.org/10.14338/ijpt-18-00047.1.

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Abstract Purpose: Patients with bilateral breast cancer (BBC), who require postmastectomy radiation therapy or radiation as part of breast conservation treatment, present a unique technical challenge. Even with modern techniques, such as intensity modulated radiation therapy or volumetric modulated arc therapy (VMAT), adequate target coverage is rarely achieved without the expense of increased integral dose to important organs at risk (OARs), such as the heart and lungs. Therefore, we present several BBC techniques and a treatment algorithm using intensity-modulated proton therapy (IMPT) for p

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Koutoulakis, Emmanouil, Louis Marage, Emmanouil Markodimitrakis, et al. "Automatic Multiorgan Segmentation in Pelvic Region with Convolutional Neural Networks on 0.35 T MR-Linac Images." Algorithms 16, no. 11 (2023): 521. http://dx.doi.org/10.3390/a16110521.

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MR-Linac is a recent device combining a linear accelerator with an MRI scanner. The improved soft tissue contrast of MR images is used for optimum delineation of tumors or organs at risk (OARs) and precise treatment delivery. Automatic segmentation of OARs can contribute to alleviating the time-consuming process for radiation oncologists and improving the accuracy of radiation delivery by providing faster, more consistent, and more accurate delineation of target structures and organs at risk. It can also help reduce inter-observer variability and improve the consistency of contouring while red

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Bisello, Silvia, Savino Cilla, Anna Benini, et al. "Dose–Volume Constraints fOr oRganS at Risk in Radiotherapy (CORSAIR): An “All-in-One” Multicenter–Multidisciplinary Practical Summary." Current Oncology 29, no. 10 (2022): 7021–50. http://dx.doi.org/10.3390/curroncol29100552.

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Background: The safe use of radiotherapy (RT) requires compliance with dose/volume constraints (DVCs) for organs at risk (OaRs). However, the available recommendations are sometimes conflicting and scattered across a number of different documents. Therefore, the aim of this work is to provide, in a single document, practical indications on DVCs for OaRs in external beam RT available in the literature. Material and Methods: A multidisciplinary team collected bibliographic information on the anatomical definition of OaRs, on the imaging methods needed for their definition, and on DVCs in general

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Randall, G. Kevin, Peter Martin, Mary Ann Johnson, and Leonard W. Poon. "Successful Aging: A Psychosocial Resources Model for Very Old Adults." Journal of Aging Research 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/934649.

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Objectives. Using data from the first two phases of the Georgia Centenarian Study, we proposed a latent factor structure for the Duke OARS domains: Economic Resources, Mental Health, Activities of Daily Living, Physical Health, and Social Resources.Methods. Exploratory and confirmatory factor analyses were conducted on two waves of the Georgia Centenarian Study to test a latent variable measurement model of the five resources; nested model testing was employed to assess the final measurement model for equivalency of factor structure over time.Results. The specified measurement model fit the da

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Mutia Adella, Yenti Arsini, and Junita Hanum Eka Putri. "Pendekatan Konseling Motivational Interviewing Dengan Teknik OARS Terhadap Perubahan Perilaku Maladaptif Peserta Didik." Sinar Dunia: Jurnal Riset Sosial Humaniora dan Ilmu Pendidikan 3, no. 1 (2024): 178–91. http://dx.doi.org/10.58192/sidu.v3i1.1813.

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This research is a literature analysis that aims to describe and investigate the concept, application and impact of the Motivational Interviewing (MI) approach with the OARS (Open-ended questions, Affirmations, Reflective listening. Summarizing) technique in various clinical contexts, especially on changes in participants' maladaptive behavior. students, such as aggressive behavior, unwillingness to learn, or non-compliance with school rules, can have a negative impact on students' academic and social progress. MI with OARS techniques has been used effectively in various clinical and education

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Saputri, Izza Wahyu Saputri, Ida Bagus Made Suryatika, Cory Amelia, et al. "Analisis Distribusi Dosis Radiasi terhadap Perencanaan Radioterapi Menggunakan Metode Segmentasi Citra pada Kasus Tumor Otak dengan Teknik Intensity Modulated Radiation Therapy (IMRT)." Kappa Journal 9, no. 1 (2025): 104–9. https://doi.org/10.29408/kpj.v9i1.29562.

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A study has been conducted on the effect of the number of segments on the radiation dose distribution of photon beams in brain tumor cases using the Intensity Modulated Radiation Therapy (IMRT) technique. This study used 20 primary data and 10 secondary data from brain tumor patients with 6 MV photon beams and a total dose of 6000 cGy. Calculations were performed by analyzing the Homogeneity Index (HI) and Conformity Index (CI) values as well as the radiation dose to the Organs at Risk (OAR), followed by statistical testing. Based on the conducted research, the results showed that HI and CI va

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Carpentier, Emilie E., Ronan L. McDermott, Marie‐Laure A. Camborde, Tania Karan, Alanah M. Bergman, and Ante Mestrovic. "Four‐dimensional treatment planning strategies for dynamic tumor tracking." Journal of Applied Clinical Medical Physics, January 18, 2024. http://dx.doi.org/10.1002/acm2.14269.

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AbstractIntroductionDynamic tumor tracking (DTT) is a motion management technique where the radiation beam follows a moving tumor in real time. Not modelling DTT beam motion in the treatment planning system leaves an organ at risk (OAR) vulnerable to exceeding its dose limit. This work investigates two planning strategies for DTT plans, the “Boolean OAR Method” and the “Aperture Sorting Method,” to determine if they can successfully spare an OAR while maintaining sufficient target coverage.Materials and methodsA step‐and‐shoot intensity modulated radiation therapy (sIMRT) treatment plan was re

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Yuen, Adams Hei Long, Alex Kai Leung Li, Philip Chung Yin Mak, and Hin Lap Leung. "Implementation of web-based open-source radiotherapy delineation software (WORDS) in organs at risk contouring training for newly qualified radiotherapists: quantitative comparison with conventional one-to-one coaching approach." BMC Medical Education 21, no. 1 (2021). http://dx.doi.org/10.1186/s12909-021-02992-2.

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Abstract Background Due to the role expansion of radiotherapists in dosimetric aspect, radiotherapists have taken up organs at risk (OARs) contouring work in many clinical settings. However, training of newly qualified radiotherapists in OARs contouring can be time consuming, it may also cause extra burden to experienced radiotherapists. As web-based open-source radiotherapy delineation software (WORDS) has become more readily available, it has provided a free and interactive alternative to conventional one-to-one coaching approach during OARs contouring training. The present study aims to eva

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