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Relevant bibliographies by topics / MR scanners

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Journal articles
Dissertations / Theses
Book chapters
Conference papers
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Academic literature on the topic 'MR scanners'

Author: Grafiati

Published: 7 June 2025

Last updated: 17 July 2025

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Journal articles on the topic "MR scanners"

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Tanner, Mark A., Taigang He, Mark A. Westwood, et al. "Multi-Centre Validation of the Cardiovascular Magnetic Resonance Multi Breath-Hold T2* Technique for Myocardial Iron Quantification in Thalassaemia Major." Blood 106, no. 11 (2005): 3828. http://dx.doi.org/10.1182/blood.v106.11.3828.3828.

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Abstract Introduction: Beta thalassaemia major (TM) is a hereditary anaemia affecting 60 000 births worldwide each year. Survival is dependent upon lifelong blood transfusions resulting in iron overload. Cardiac siderosis can result in a cardiomyopathy which is the leading cause of death in TM. The validated cardiac magnetic resonance (CMR) T2* technique allows non-invasive and reproducible quantification of myocardial iron. Assessment of myocardial iron loading is essential in determining appropriate chelation therapy. This technique has the potential to become the new gold standard in the as

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Željko Đ, Vujović. "Magnets, Gradients, and RF Coils of MR Scanners." International Journal of Physics Research and Applications 6, no. 2 (2023): 128–35. http://dx.doi.org/10.29328/journal.ijpra.1001062.

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The topic of this paper is the parts of modern MR devices, which contain magnet coils. MR scanner magnets are made of four types of electromagnetic coils: 1) Main magnet, made of superconducting material. The main magnet of an MR (Magnetic Resonance Imaging) scanner creates a strong and uniform magnetic field around the patient being scanned. This magnetic field is typically in the range of 0.5 to 3 Tesla and is used to align the magnetic moments of the hydrogen atoms in the patient's body. The superconductors, which create the main magnetic field, should be cooled with liquid helium and liqui

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Vujović, Željko. "Magnets, Gradients, and RF Coils of MR Scanners." Internationa Jouran of Physics and Applications 6, no. 2 (2023): 128–35. https://doi.org/10.5281/zenodo.15336934.

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The topic of this paper is the parts of modern MR devices, which contain magnet coils. MR scanner magnets are made of four types of electromagnetic coils: 1) Main magnet, made of superconducting material. The main magnet of an MR (Magnetic Resonance Imaging) scanner creates a strong and uniform magnetic fi eld around the patient being scanned. This magnetic fi eld is typically in the range of 0.5 to 3 Tesla and is used to align the magnetic moments of the hydrogen atoms in the patient's body. The superconductors, which create the main magnetic fi eld, should be cooled with liquid helium and li

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Kuijf, Hugo J., J. Matthijs Biesbroek, Bresser Jeroen de, et al. "Standardized Assessment of Automatic Segmentation of White Matter Hyperintensities and Results of the WMH Segmentation Challenge." IEEE Transactions on Medical Imaging 38, no. 11 (2019): 2556–68. https://doi.org/10.1109/TMI.2019.2905770.

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Quantification of cerebral white matter hyperintensities (WMH) of presumed vascular origin is of key importance in many neurological research studies. Currently, measurements are often still obtained from manual segmentations on brain MR images, which is a laborious procedure. Automatic WMH segmentation methods exist, but a standardized comparison of the performance of such methods is lacking. We organized a scientific challenge, in which developers could evaluate their method on a standardized multi-center/-scanner image dataset, giving an objective comparison: the WMH Segmentation Challenge

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Kuijf, Hugo J., Adria Casamitjana, D. Louis Collins, et al. "Standardized Assessment of Automatic Segmentation of White Matter Hyperintensities and Results of the WMH Segmentation Challenge." IEEE Transactions on Medical Imaging 38, no. 11 (2019): 2556–68. https://doi.org/10.1109/tmi.2019.2905770.

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Quantification of cerebral white matter hyperintensities (WMH) of presumed vascular origin is of key importance in many neurological research studies. Currently, measurements are often still obtained from manual segmentations on brain MR images, which is a laborious procedure. The automatic WMH segmentation methods exist, but a standardized comparison of the performance of such methods is lacking. We organized a scientific challenge, in which developers could evaluate their methods on a standardized multi-center/-scanner image dataset, giving an objective comparison: the WMH Segmentation Chall

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Andica, Christina, Koji Kamagata, Takuya Hayashi, et al. "Scan–rescan and inter-vendor reproducibility of neurite orientation dispersion and density imaging metrics." Neuroradiology 62, no. 4 (2019): 483–94. http://dx.doi.org/10.1007/s00234-019-02350-6.

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Abstract Purpose The reproducibility of neurite orientation dispersion and density imaging (NODDI) metrics in the human brain has not been explored across different magnetic resonance (MR) scanners from different vendors. This study aimed to evaluate the scan–rescan and inter-vendor reproducibility of NODDI metrics in white and gray matter of healthy subjects using two 3-T MR scanners from two vendors. Methods Ten healthy subjects (7 males; mean age 30 ± 7 years, range 23–37 years) were included in the study. Whole-brain diffusion-weighted imaging was performed with b-values of 1000 and 2000 s

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Provenzale, James M., Brian A. Taylor, Elisabeth A. Wilde, Michael Boss, and Walter Schneider. "Analysis of variability of fractional anisotropy values at 3T using a novel diffusion tensor imaging phantom." Neuroradiology Journal 31, no. 6 (2018): 581–86. http://dx.doi.org/10.1177/1971400918789383.

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We employed a novel diffusion tensor imaging phantom to study intra- and interscanner reproducibility on two 3T magnetic resonance (MR) scanners. Using a phantom containing thousands of hollow micron-size tubes in complex arrays, we performed two experiments using a b value of 1000 s/ms2 on two Siemens 3T Trio scanners. First, we performed 12-direction scans. Second, on one scanner, we performed two 64-direction protocols with different repetition times (TRs). We used a one-way analysis of variance to calculate differences between scanners and the Mann-Whitney U test to assess differences betw

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Biloglav, Zrinka, Petar Medaković, Dina Vrkić, et al. "Geographical and Temporal Distribution of Radiologists, Computed Tomography and Magnetic Resonance Scanners in Croatia." INQUIRY: The Journal of Health Care Organization, Provision, and Financing 58 (January 2021): 004695802110602. http://dx.doi.org/10.1177/00469580211060295.

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The aim of the study was to analyse the temporal and geographic distribution of radiologists, computed tomography and magnetic resonance scanners in Croatia. In this observational study we estimated radiologists’ number per 100,000 population for 1997, 2006, and 2017 and compared private and public CT and MR scanners between 2011 and 2018. We analyzed the availability of radiologists and scanners, and the relationship between the radiological workforce and economic strength among counties. The workforce increased significantly from 1997 to 2017 and was associated with economic strength categor

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Tang, Phua Hwee, and Sameema Nisa. "IMG-06. Comparing between MR spectroscopy done at 1.5T and 3T." Neuro-Oncology 24, Supplement_1 (2022): i77. http://dx.doi.org/10.1093/neuonc/noac079.282.

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Abstract INTRODUCTION: In hospitals with heavily utilised MRI scanners, it may not be possible to schedule the patient on 1 particular scanner for all scans and thus this project was carried out to determine if there is any significant difference in the spectroscopy profile between 1.5 T and 3T MRI scanners late year 2021. AIM: To describe the MR spectroscopy profile of normal brain tissue performed on 1.5T and 3T MRI scanners in KK Women’s and Children’s Hospital. METHODS: Three healthy adult volunteers with normal body mass index underwent MRI brain scans after informed consent in this Insti

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Gasperini, C., M. Rovaris, M. P. Sormani, et al. "Intra-observer, inter-observer and inter-scanner variations in brain MRI volume measurements in multiple sclerosis." Multiple Sclerosis Journal 7, no. 1 (2001): 27–31. http://dx.doi.org/10.1177/135245850100700106.

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Introduction: Measurement of brain volume on magnetic resonance imaging (MRI) scans is regarded as an objective marker of multiple sclerosis (MS) severity with the potential to monitor treatment efficacy accurately. This study was performed to assess the variability of brain MRI volume measurements. Patients and methods: We studied nine patients with relapsing-remitting MS, who were imaged on two occasions (separated by an interval of 24 h) using two different MR scanners and fast fluid-attenuated inversion recovery (fast-FLAIR) sequences. The whole brain volume computed from each image was me

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Dissertations / Theses on the topic "MR scanners"

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Weirich, Christoph Peter [Verfasser]. "Quantitative PET imaging with hybrid MR-PET scanners / Christoph Peter Weirich." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1052299563/34.

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Weirich, Christoph [Verfasser]. "Quantitative PET imaging with hybrid MR-PET scanners / Christoph Peter Weirich." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://nbn-resolving.de/urn:nbn:de:hbz:82-opus-50383.

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Hattori, Yoko, Hiroshi Fukatsu, and Takeo Ishigaki. "Measurement and Evaluation of the Acoustic Noise of A 3 Tesla MR Scanner." Nagoya University School of Medicine, 2007. http://hdl.handle.net/2237/7475.

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Craig-Craven, Alexander. "Development of Transmit and Receive Coils for 1H MRI/MRS on a 7T MR Scanner." Thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10930.

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<p>High quality images with strong contrast, good resolution and geometrical consistency are of crucial importance in magnetic resonance imaging, where the relatively low intrinsic sensitivity of MR methods places high demands on the imaging hardware. One of many key components in the imaging system is the radiofrequency coil, responsible for transmitting excitation signals and/or listening for response from the object. In this project a number of such coils are developed for specific applications (namely proton imaging of rat and fish brains), then evaluated against phantoms and empirically i

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Watanabe, Masao. "Performance Evaluation of a Newly Developed MR-Compatible Mobile PET Scanner with Two Detector Layouts." Kyoto University, 2020. http://hdl.handle.net/2433/253141.

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Ryusuke, Nakamoto. "Comparison of PET/CT with sequential PET/MRI using an MR-compatible mobile PET system." Kyoto University, 2018. http://hdl.handle.net/2433/232099.

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Brandejsky, Vaclav. "MR scanner independent 3D B1 field mapping of magnetic resonance spectroscopy RF coils using an automated measurement system." Thesis, Linköpings universitet, Institutionen för medicinsk teknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15025.

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We developed a method for measurement of the B1+/- fields as an alternative approach to B1+/- fields assessment in MR scanner. Our setup incorporates an industrial coordinate table controlled by a PC-based program, search coils, a two--port vector network analyzer and an analog-to-digital (A/D) card. It is possible to measure in various liquid media (for example in saline solution) to mimic different shapes and dielectric properties of the human body.<br>Radiofrekventa - spolars känslighetsmönster är viktigt för avbildning med magnetkamera (MRI) och magnetresonansspektroskopi (MRS). Vetskap om

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Dorileô, Ederson Antônio Gomes. "Needle modeling, insertion planning and steering for CT or MR image-guided robot-driven percutaneous procedures." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS222/document.

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L’objectif de cette thèse est l’étude et le développement d’un outil de planification de trajectoires adaptatives guidée par robot afin d’assister l’insertion des aiguilles biseautées semi-rigides en procédures percutanées sous imagerie scanner ou IRM. L’approche est basée sur un nouveau modèle de la déflexion de l’aiguille qui permet une prédiction hors ligne des déformations de l’aiguille et une amélioration des performances d’insertion en ligne. Cette amélioration permet de compenser les incertitudes sur les connaissances de l’environnement et les approximations lors de la modélisation de l

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Brandejsky, Vaclav. "MR scanner independent 3D B₁ field mapping of magnetic resonance spectroscopy RF coils using an automated measurement system." Thesis, Linköping University, Department of Biomedical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15025.

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<p>We developed a method for measurement of the B<sub>1</sub><sup>+/-</sup> fields as an alternative approach to B<sub>1</sub><sup>+/-</sup> fields assessment in MR scanner. Our setup incorporates an industrial coordinate table controlled by a PC-based program, search coils, a two--port vector network analyzer and an analog-to-digital (A/D) card. It is possible to measure in various liquid media (for example in saline solution) to mimic different shapes and dielectric properties of the human body.</p><br><p>Radiofrekventa - spolars känslighetsmönster är viktigt för avbildning med magnetkamera

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Wickel, David [Verfasser]. "Vergleich von MR-tomografisch ermittelten Signal-Intensitäts-Verhältnissen zwischen Leber und Muskel an Scannern verschiedener Hersteller zur Evaluierung einer eventuellen Plattform-Abhängigkeit der Leber-Eisen-Bestimmung / David Wickel." Ulm : Universität Ulm, 2019. http://d-nb.info/117602227X/34.

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Book chapters on the topic "MR scanners"

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Burgos, Ninon, Manuel Jorge Cardoso, Marc Modat, et al. "Attenuation Correction Synthesis for Hybrid PET-MR Scanners." In Advanced Information Systems Engineering. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40811-3_19.

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Karani, Neerav, Krishna Chaitanya, Christian Baumgartner, and Ender Konukoglu. "A Lifelong Learning Approach to Brain MR Segmentation Across Scanners and Protocols." In Medical Image Computing and Computer Assisted Intervention – MICCAI 2018. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00928-1_54.

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Zhu, Yueyue, Haotian Jiang, Rongqing Cai, and Geng Chen. "Multi-Label MambaOut for Quality Assessment of Low-Field Pediatric Brain MR Images." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-83008-2_1.

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Abstract Magnetic Resonance Imaging (MRI) can be utilized to study the structure of pediatric brains non-invasively. In practice, low-field MRI scanners are widely adopted for pediatric brain imaging. However, the corresponding acquired MRI data usually suffers from severe artifacts, such as noise and motion. Therefore, an effective Quality Assessment (QA) method is essential. To this end, we design a Multi-Label MambaOut (MLMambaOut) model for the low-field pediatric brain MRI QA challenge. Specifically, we view this challenge as a multi-label classification task, utilizing four stages of gated convolution neural network blocks and ML-Decoder to finish the classification with class balance loss. Furthermore, we explore the performance of Mamba and some advanced models for this challenge. We performed extensive experiments on the challenge data, which is low-field and corrupted with seven kinds of artifacts. The results show that our MLMambaOut achieves superior classification results compared with other methods.

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Rizzo, Vincenzo, Federica Savino, Paolo Turco, and Alessandra Zorz. "Quality Control for Hybrid Positron Emission Tomography (PET/CT and PET/MR) Scanners in Nuclear Medicine." In Nuclear Medicine Hybrid Imaging for Radiographers & Technologists. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-86228-1_10.

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Weishaupt, Dominik, Victor D. Köchli, and Borut Marincek. "The MR Scanner." In How does MRI work? Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-07805-1_6.

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Runge, Val M., and Johannes T. Heverhagen. "Components of an MR Scanner." In The Physics of Clinical MR Taught Through Images. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85413-3_1.

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Choi, C. H., J. Felder, C. W. Lerche, and N. J. Shah. "CHAPTER 18. Preclinical Hybrid MR-PET Scanner Hardware." In Hybrid MR-PET Imaging. Royal Society of Chemistry, 2018. http://dx.doi.org/10.1039/9781788013062-00351.

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Tang, Songyuan, Yen-wei Chen, Rui Xu, Yongtian Wang, Shigehiro Morikawa, and Yoshimasa Kurumi. "MR-CT Image Registration in Liver Cancer Treatment with an Open Configuration MR Scanner." In Biomedical Image Registration. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11784012_35.

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Chen, Zexin, Dandan Lin, Lujie Sun, Sining Wang, and Dongchen Han. "A ‘Human-In-The-Loop’ Workflow for Realizing Taihu Rocks." In Computational Design and Robotic Fabrication. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8405-3_29.

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AbstractThis research uses an expanded polystyrene (EPS) Taihu rock as a demonstrator to illustrate a workflow encompassing shape grammar-based design and Mixed Reality (MR)-aided robotic fabrication. It aims to address a post-digital mindset that values human’s tacit knowledge and craftsmanship within CAD-CAM processes, therefore, this research combines three components: an idea of the human-cyber-physical system (HCPS), a from-finding approach, and an augmented materialization method. The investigators first 3D-scanned a natural Taihu rock and interpreted its geometric peculiarities into design generation rules. These rules were then translated into robotic foam-cutting paths. With Head-mounted Display (HMD) and MR technology, human fabricators were able to alter robotic motions on-site per their aesthetical demands.

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Preložnik, Domen, and Žiga Špiclin. "Domain Unlearning Boosts Lesion Segmentation Performance on Seen and Unseen MR Scanner Data." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-76160-7_5.

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Conference papers on the topic "MR scanners"

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Teimoorisichani, M., H. Sari, J. Hamill, et al. "An Accurate Attenuation and Scatter Correction Method for PET/MR Scanners with Lutetium-based Scintillators." In 2024 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector Conference (RTSD). IEEE, 2024. http://dx.doi.org/10.1109/nss/mic/rtsd57108.2024.10656300.

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Smith, M., P. Su, D. Faul, et al. "Motion-Corrected Brain PET on a PET/MR Scanner using MR Volume Navigators." In 2024 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector Conference (RTSD). IEEE, 2024. http://dx.doi.org/10.1109/nss/mic/rtsd57108.2024.10654936.

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Noui, Louahab, and Jörg Reitterer. "Software-defined laser beam scanner display for high-volume augmented reality applications." In Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) VI, edited by Hong Hua, Naamah Argaman, and Daniel K. Nikolov. SPIE, 2025. https://doi.org/10.1117/12.3045230.

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Spisni and Polvi. "Image Quality Assessment In MR Scanners." In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 1992. http://dx.doi.org/10.1109/iembs.1992.594806.

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Spisni, A., and S. Polvi. "Image quality assessment in MR scanners." In 1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 1992. http://dx.doi.org/10.1109/iembs.1992.5761768.

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Olkkonen, Juuso. "Dispelix: Diffractive Waveguides for Laser Beam Scanners." In SPIE AR, VR, MR Industry Talks II, edited by Conference Chair. SPIE, 2021. http://dx.doi.org/10.1117/12.2598224.

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Kops, Elena Rota, Gudrun Wagenknecht, Jurgen Scheins, Lutz Tellmann, and Hans Herzog. "Attenuation correction in MR-PET scanners with segmented T1-weighted MR images." In 2009 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2009). IEEE, 2009. http://dx.doi.org/10.1109/nssmic.2009.5402034.

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Augousti, Andreas T., and Ali Raza. "Fiber optic sensor for respiration gating in MR scanners." In Photonics China '96, edited by Kim D. Bennett, Byoung Yoon Kim, and Yanbiao Liao. SPIE, 1996. http://dx.doi.org/10.1117/12.252142.

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Kops, Elena Rota, and Hans Herzog. "Template based attenuation correction for PET in MR-PET scanners." In 2008 IEEE Nuclear Science Symposium and Medical Imaging conference (2008 NSS/MIC). IEEE, 2008. http://dx.doi.org/10.1109/nssmic.2008.4774281.

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Scully, P. J., R. Holmes, and G. R. Jones. "Remote, in-vivo monitoring of blood oxygen saturation of patients using optical fibres." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1994. http://dx.doi.org/10.1364/cleo_europe.1994.cwi4.

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Monitoring of patients in magnetic resonance (MR) scanners is complicated by the effects of the static magnetic field, the radio frequency field, and time-dependent magnetic field gradients. Conventional electronic sensors malfunction under these conditions, and optical fibre-based sensors are increasingly being used because of their immunity to electromagnetic interference and intrinsic safety.1 Conventional pulse oximeters have been reported to malfunction when used in the vicinity of MR scanners.2

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Reports on the topic "MR scanners"

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MR MSK Cartilage for Joint Disease, Consensus Profile. Chair Thomas Link and Xiaojuan Li. Radiological Society of North America (RSNA) / Quantitative Imaging Biomarkers Alliance (QIBA), 2021. http://dx.doi.org/10.1148/qiba/20210925.

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The goal of a QIBA Profile is to help achieve a useful level of performance for a given biomarker. The Claim (Section 2) describes the biomarker performance. The Activities (Section 3) contribute to generating the biomarker. Requirements are placed on the Actors that participate in those activities as necessary to achieve the Claim. Assessment Procedures (Section 4) for evaluating specific requirements are defined as needed. This QIBA Profile (MR-based cartilage compositional biomarkers (T1ρ, T2) ) addresses the application of T1ρ and T2 for the quantification of cartilage composition, which c

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Wang, Yingxuan, Cheng Yan, and Liqin Zhao. The value of radiomics-based machine learning for hepatocellular carcinoma after TACE: a systematic evaluation and Meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.6.0100.

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Review question / Objective: Meta-analysis was performed to predict the efficacy and survival status of patients with hepatocellular carcinoma after the application of TACE, applying clinical models, radiomic models and combined models for non-invasive assessment.We performed a Meta-analysis on the prediction of efficacy and survival status after TACE for hepatocellular carcinoma. Condition being studied: Patients were scanned using CT or MR machines, and some patients had multiple follow-up records, and imaging feature extraction software was applied to extract regions of interest and build m

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MR (Diffusion-Weighted Imaging (DWI) of the Apparent Diffusion Coefficient (ADC), Clinically Feasible Profile. Chair Michael Boss, Dariya Malyarenko, and Daniel Margolis. Radiological Society of North America (RSNA) / Quantitative Imaging Biomarkers Alliance (QIBA), 2022. http://dx.doi.org/10.1148/qiba/20221215.

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The goal of a QIBA Profile is to help achieve a useful level of performance for a given biomarker. The Claim (Section 2) describes the biomarker performance and is derived from the body of scientific literature meeting specific requirements, in particular test-retest studies. The Activities (Section 3) contribute to generating the biomarker. Requirements are placed on the Actors that participate in those activities as necessary to achieve the Claim. Assessment Procedures (Section 4) for evaluating specific requirements are defined as needed to ensure acceptable performance. Diffusion-Weighted

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