Relevant bibliographies by topics / Lungs volume / Dissertations / Theses
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Dissertations / Theses on the topic 'Lungs volume'

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Published: 3 June 2025
Last updated: 31 July 2025

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1

PLASSMAN, BRENDA LEE. "PERCEPTION OF LUNG VOLUME IN NORMAL HUMAN SUBJECTS." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183843.

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Ability to duplicate an inspired volume level was studied in five healthy males using the psychophysical method of reproduction. Three conditions were evaluated in order to investigate the perceptual cues used for obtaining a specific inspired volume. Conditions were designed to progressively remove cues that might affect the subject's ability to duplicate an inspired lung volume. In each, the subject performed a standard inspiration, spanning from end expiratory position to 35% of inspiratory capacity. Conditions were varied as follows: (1) subjects were instructed to perform both the standar
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2

Karlsson, Denise. "Do people with larger lungs speak in longer utterances and inhale less frequently? : Relationships between lung capacity, respiratory rate, proportion of lung capacity used for speech and utterance durations." Thesis, Stockholms universitet, Institutionen för lingvistik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-182407.

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This study examined the relationship between lung capacity, speech volume and duration of utterances. 8 adult subjects, 4 males and 4 females (24-36 yrs), participated. By breathing into a digital spirometer, lung capacities such as Vital Capacity (VC) and Inspirational Capacity (IC) were estimated. Respiratory movements were measured using Respiratory Inductance Plethysmography (RIP), and these respiratory movements were calibrated in litres using the spirometer. The proportion of lung capacity used for speech was estimated from the calibrated RIP signals during reading of a nonsense text wit
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3

Eriksson, Leif. "Lung transplantation clinical and experimental studies /." Lund : Depts. of Cardiothoracic Surgery, Respiratory Medicine and Clinical Physiology, University of Lund, 1998. http://catalog.hathitrust.org/api/volumes/oclc/39068785.html.

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4

Johansson, Soller Maria. "Cytogenetic studies of lung tumors." Lund : Dept. of Clinical Genetics, University of Lund, 1994. http://catalog.hathitrust.org/api/volumes/oclc/39068855.html.

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5

Kahraman, Ali Teymur. "Automatic Interpretation of Lung CT Volume Images." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-454689.

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Computer-aided systems in medical imaging nowadays play a crucial role to assist clinicians. Research shows that the use of computer-aided systems is indispensable to alleviate the workload of clinicians. In this thesis, a new framework, which interprets lung computed tomography (CT) volume images automatically is proposed to help clinicians. A common interpretation tasks of lung CT volume images involves segmentation and extraction of the organs in the thoracic cavity. The developed framework consists of six main steps to segment and extracts the major parts in the thoracic cavity. In thefirs
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6

Walther, G. B. "Lung volume reduction surgery : the Groote Schuur experience." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/2832.

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Bibliography: leaves 54-60.<br>From recent statistics (79,59) it has been concluded that COPD is the most common lung disease in the United States affecting almost 16 million people. The mortality is rising, COPD is the fourth most common cause of death in USA after myocardial infarctions, cancer and stroke (91). COPD is clearly under diagnosed in the early stages (101). Early smoking cessation would have an enormous impact on the progression of the disease (7,24,25,58,106).
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7

Schachter, L. M. "Change in lung volume in asthma with particular reference to obesity." Thesis, The University of Sydney, 2005. http://hdl.handle.net/2123/979.

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Over the last 20 years both asthma and obesity have increased in prevalence. What is the link? There are data to suggest that increasing obesity is a risk for the increase in prevalence of asthma. A number of mechanisms have been postulated including the effects of reduced lung volume on bronchial reactivity and mechanical changes with lower lung volumes. Other possibilities include other obesity-induced co-morbidities including gastro-oesophageal reflux. The aim of this thesis was to evaluate the link between asthma and obesity in both adult and childhood populations and to undertake experime
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8

Schachter, L. M. "Change in lung volume in asthma with particular reference to obesity." University of Sydney, 2005. http://hdl.handle.net/2123/979.

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Doctor of Philosophy(PhD)<br>Over the last 20 years both asthma and obesity have increased in prevalence. What is the link? There are data to suggest that increasing obesity is a risk for the increase in prevalence of asthma. A number of mechanisms have been postulated including the effects of reduced lung volume on bronchial reactivity and mechanical changes with lower lung volumes. Other possibilities include other obesity-induced co-morbidities including gastro-oesophageal reflux. The aim of this thesis was to evaluate the link between asthma and obesity in both adult and childhood populati
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9

Toma, Tudor Paul. "Endoscopic lung volume reduction in chronic obstructive pulmonary disease." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428589.

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10

McNulty, William. "Physiological mechanisms of lung volume reduction coils in emphysema." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/50161.

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Emphysema is characterised by airflow limitation that is a result of both loss of elastic recoil and small airways disease. It is poorly responsive to medical therapy. Lung volume reduction coils improve symptoms and lung function in the short term. However their mechanism of action and medium term effectiveness is not fully understood. Methods A randomised controlled study consisting of thirty patients with severe chronic obstructive pulmonary disease was performed. Control patients crossed over to the treatment arm at 12 months. The primary outcome was 6 minute walk distance at 12 months. Ch
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11

Sylvan, Elin. "CT-based measurement of lung volume and attenuation of deceased." Thesis, Linköping University, Department of Biomedical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-4417.

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<p>Because of the difficulties in concluding whether a person has drowned or not, information that could be relevant for postmortal diagnosis of drowning was studied. With postmortal CT images lung volume, mean attenuation, anterior-posterior difference, lung density profile and amount of water within the lungs were investigated.</p><p>The report also evaluates three examples of software that calculates lung volume from postmortal CT images: Siemens’ Syngo Pulmo CT, Siemens‘ Volume Evaluation and GE Medical Systems’ Volume Viewer. The method used at autopsy was also studied. The repeatability
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Goldin, Jonathan Gerald. "Spirometric and gas transfer measurements among normal adult South African men : an investigation into anthropoemtric, socio-economic, racial and environmental factors influencing lung function." Doctoral thesis, Faculty of Health Sciences, 1989. https://hdl.handle.net/11427/31982.

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An investigation into anthropocentric, socio-economic, racial and environmental factors influencing lung function. In modern clinical practice the data derived from pulmonary function tests are an integral part of the evaluation of pulmonary disease states. Such data may shed light on the nature of the disease state, the extent (severity) of the disease and the degree of functional impairment that is present. It is generally recognized that there is a lack of consistent data regarding "normal" values in pulmonary function. Despite great progress in standardizing instrumentation, methodology a
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Montmerle, Stéphanie. "Lung function in micro- and in hypergravity /." Stockholm, 2005. http://diss.kib.ki.se/2005/91-7140-332-9/.

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14

Kemp, Samuel. "Expanding the techniques and indications for bronchoscopic lung volume reduction." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/17863.

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Patients with emphysema frequently complain of exertional dyspnoea despite maximal medical therapy. Destruction of the elastic tissue of the lung leads to enlargement of airspaces, small airway collapse, and progressive hyperinflation. This results in impaired respiratory mechanics and reduced inspiratory capacity, which together cause worsening dyspnoea and impaired exercise tolerance. Lung volume reduction surgery has been shown to improve lung function and exercise capacity in selected patients with upper lobe predominant emphysema by removing the most hyperexpanded areas of lung. However,
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Appelberg, Jonas. "Ventilation and Lung Volume During Sleep and in Obstructive Sleep Apnea." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3363.

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16

Zoumot, Zaid. "Novel techniques for lung volume reduction and its assessment in emphysema." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24955.

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Many patients with emphysema remain breathless despite optimal medical therapy. Non-pharmacological approaches to reduce the volume of hyperinflated lungs include lung volume reduction surgery (LVRS) which is effective in selected patients with upper lobe predominant emphysema and low exercise capacity. Bronchoscopic techniques to reduce lung volume are also being developed. Studies of two bronchoscopic techniques to achieve lung volume reduction (LVR) are presented in this thesis; LVR coils (LVRCs) and endobronchial autologous blood instillation. In a trial of LVRCs we demonstrate for the fir
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Maia, Isabel Aragão. "Avaliação da função pulmonar por espirometria na leishmaniose visceral." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/5/5134/tde-08122015-100629/.

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Introdução: Das formas clínicas das leishmanioses, a forma clássica da leishmaniose visceral (LV) é a forma mais grave da doença, afetando órgãos como baço, fígado e linfonodos. Como a doença apresenta um comprometimento intersticial secundário à infecção pela Leishmania, existe o envolvimento de outros órgãos. No pulmão, o envolvimento se manifesta pela pneumonite intersticial. Essa alteração foi provada por estudo anatomopatológico em hamsteres, cães e homens. Embora as pesquisas pulmonares na doença avaliem as alterações ultraestruturais provocadas pela leishmaniose, não existem estudos que
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Vapaavuori, Jessica. "Effect of CPAP on nocturnal breathing – does expiratory reserve volume matter?" Thesis, Uppsala universitet, Institutionen för kvinnors och barns hälsa, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-416423.

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19

Cederlund, Kerstin. "Radiological imaging of pulmonary emphysema : preoperative evaluation of candidates for lung volume reduction surgery /." Stockholm, 2002. http://diss.kib.ki.se/2002/91-7349-195-0.

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Roth, Stefan Daniel. "Lung volume, breathing pattern and ventilation : inhomogeneity in preterm and term infants /." [S.l.] : [s.n.], 2009. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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21

Iwarsson, Jenny. "Breathing and phonation : effects of lung volume and breathing behaviour on voice function /." Stockholm, 2001. http://diss.kib.ki.se/2001/91-628-4522-5.

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22

Yavarna, Tarunashree. "Airway segmentation of the ex-vivo mouse lung volume using voxel based classification." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/909.

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The spread of the pulmonary disease among humans is a very rapid process and it stands as the third highest killer in the United States of America. Computed Tomography (CT) scanning allows us to obtain detailed images of the pulmonary anatomy including the airways. The complexity of the tree makes the process of manual segmentation tedious, time-consuming, and variant across individuals. The resultant airway segmentation, whether arrived at manually or through the aid of computers, can then be used to measure airway geometry, study airway reactivity, and guide surgical interventions. The thesi
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Torsani, Vinicius. "Estudo da influência do esforço e da posição corporal no esvaziamento pulmonar regional em indivíduos saudáveis por meio da tomografia de impedância elétrica." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/5/5160/tde-02062009-095341/.

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A Tomografia de Impedância Elétrica (TIE) é um método de imagem que permite estudarmos alterações regionais de ventilação pulmonar com alta resolução temporal. Estudamos a influência da posição corporal e do esforço expiratório no esvaziamento regional pulmonar comparando dados de espirometria com os da TIE adquiridos simultaneamente. MÉTODOS: Oito voluntários monitorados continuamente com TIE, realizaram manobras de capacidade vital lenta (CVL) com washout de nitrogênio (WN2) e capacidade vital forçada (CVF) nas posições sentado, decúbito lateral direito (DLD) e esquerdo (DLE). Em todas as po
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Dechman, Gail Sterns. "The effect of lung volume below normal functional residual capacity on respiratory system mechanics." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41568.

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This thesis examines changes in the mechanical behaviour of the canine and human respiratory systems to changes in lung volume below normal functional residual capacity (FRC). In open chested dogs lung elastance (E$ sb{ rm L}$) increased and lung resistance (R$ sb{ rm L}$) changed little with decreases in positive end-expiratory pressure (PEEP) of the ventilatory circuit. The dominance of plastoelastic lung tissue properties at low lung volumes was used to interpret the lack of change in R$ sb{ rm L}$. Computed tomography demonstrated that pleural effusion (PE) created atelectasis in dependent
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Höstman, Staffan. "Minimal volume ventilation in lung injury : With special reference to apnea and buffer treatment." Doctoral thesis, Uppsala universitet, Anestesiologi och intensivvård, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-305369.

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A fairly large portion of patients receiving surgical or intensive care will need mechanical ventilation at some point. The potential ventilator-induced lung injury (VILI) is thus of interest. One of the main causal factors in VILI is the cyclic energy shifts, i.e. tidal volumes, in the lung during mechanical ventilation. The problem can be approached in two ways. Firstly, one can utilize apneic oxygenation and thus not cause any tidal injuries at all. Secondly, and more traditionally, one can simply lower the tidal volumes and respiratory rates used. The following describes a series of animal
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Gibbs, A. P. "Characterising the influence of pre-drive lung volume on force and power production during rowing." Thesis, Brunel University, 2007. http://bura.brunel.ac.uk/handle/2438/3637.

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Purpose: This study evaluated the effect of lung volume at the catch position to force and power outputs during single maximal effort strokes in rowing. Responses were compared when the participants were ‘fresh’ and following specific inspiratory muscle fatigue (IMF). In addition, a single subject pilot study was performed to characterise the changes in intra-thoracic (ITP), intra-abdominal (IAP) and trans-diaphragmatic (Pdi) pressures during a 30 second maximal effort piece on a rowing ergometer. Methods: Nine male rowers of international standard participated in the research. Static force, a
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Schwartz, Rayna Leora, and Rayna Leora Schwartz. "Regulation of Upper Airway Muscle Activity Across the Lung Volume Range in Healthy Young Adults." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/625149.

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Speech is a voluntary task that requires fine motor control of ~50 muscles, including muscles of the tongue. One tongue muscle, the genioglossus (GG), has been well studied as an airway dilator that defends the airway in sleep (Remmers 1980). The results of this work highlights the GG's role in airway defense and factors that augment (PaCO2) or inhibit (pulmonary stretch receptor feedback) GG activity (Bailey et al. 2001). We recorded GG electromyographic (EMG) activity across the lung volume range testing the hypothesis that tongue muscle activation declines with lung volume in respir
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MINEO, DAVIDE. "Variations of inflammatory mediators and α1-antitrypsin levels after lung-volume-reduction surgery for emphysema". Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2009. http://hdl.handle.net/2108/208592.

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Razionale. L’infiammazione cronica, con squilibrio della proteasi-antiproteasi, è responsabile nell’enfisema del declino della funzione polmonare e della progressiva cachessia. Obiettivo. Valutare le variazioni dei livelli di vari mediatori infiammatori e di α1-antitripsina dopo chirurgia di riduzione di volume polmonare rispetto alla riabilitazione respiratoria. Metodi. Ventotto pazienti con enfisema di grado moderato-severo, sottoposti a chirurgia di riduzione di volume polmonare con tecnica video-toracoscopica, sono stati confrontati con 26 pazienti dalle caratteristiche simili che, rifiu
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Guldbrand, Anna. "A comparison of helium dilution and plethysmography in measuring static lung volumes." Thesis, Uppsala University, Department of Medical Biochemistry and Microbiology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9177.

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<p>In order to examine the usefulness of the multi breath helium dilution method (MB) it was compared to the single breath helium dilution method (SB) and body plethysmography (BP). Residual volume (RV), total lung capacity (TLC) and vital capacity (VC) were measured in seventeen subjects with obstructive (11) or restrictive (6) lung disease and four normal subjects.</p><p>With information from professional literature and current periodicals, advantages and disadvantages with all three methods were compared. ANOVA and Student's t-test were performed on the measurement results.</p><p>The result
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Baluwala, Habib. "Physically motivated registration of diagnostic CT and PET/CT of lung volumes." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:797c00c0-1efa-43e2-8268-e3d09ced0e06.

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Lung cancer is a disease affecting millions of people every year and poses a serious threat to global public health. Accurate lung cancer staging is crucial to choose an appropriate treatment protocol and to determine prognosis, this requires the acquisition of contrast-enhanced diagnostic CT (d-CT) that is usually followed by a PET/CT scan. Information from both d-CT and PET scan is used by the clinician in the staging process; however, these images are not intrinsically aligned because they are acquired on different days and on different scanners. Establishing anatomical correspondence, i.e.
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Aljamhan, Essam Ali. "How Does Alteration of Airway Resistance Affect Delivered Tidal Volume in Adult Patients Receiving High-Frequency Oscillatory Ventilation?" Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/rt_theses/1.

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Concerns exist regarding the ability of HFOV to provide the needed lung protective ventilation for adult patients with ARDS. HFOV is increasingly being used as a lung protecting ventilation mode even if some of its protective attributes may be lost as the airway resistance (Raw) increases or decreases. In fact, in cases of shifting air resistance, HFOV may have caused lung injury. PURPOSE: The purpose of this study was to investigate the effect of airway resistance on tidal volume (Vt) delivered by HFOV to adult patients. Also, the study intended to determine direction for volume change when r
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Vânia, Mell de Luiz. "Função pulmonar e síndrome metabólica em adolescentes escolares do município de Campina Grande – Paraíba." Universidade Estadual da Paraíba, 2016. http://tede.bc.uepb.edu.br/jspui/handle/tede/2979.

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Proquitté, Hans Michael [Verfasser]. "Monitoring of lung volume in ventilated newborn infants using Heptafluoropropane as tracer gas / Hans Michael Proquitté." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2012. http://d-nb.info/102995559X/34.

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Cheyne, William Spencer. "The effect of negative intrathoracic pressure on heart-lung interaction in the presence of elevated lung volume and increased right ventricular preload and afterload." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55262.

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While the hemodynamic effects of spontaneous respiration are normally considered minimal, large increases in negative intrathoracic pressure (ITP) are known to impair left ventricular (LV) function. Increased negative ITP is a hallmark of obstructive respiratory disease, and is often accompanied by elevations in lung volume and changes to the pulmonary vasculature, both of which have adverse effects on LV function through both series and direct ventricular interaction (DVI). While the hemodynamic effects of these stressors in isolation are generally well established, the interaction of these m
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Dellamonica, Jean. "Variations du volume pulmonaire au cours de la ventilation mécanique : modes ventilatoires et manœuvres positionnelles." Phd thesis, Université Paris-Est, 2012. http://tel.archives-ouvertes.fr/tel-00905744.

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Le Syndrome de détresse respiratoire aiguë (SDRA) est une pathologie fréquente et grave. Son traitement fait appel à la ventilation mécanique qui est indispensable pour maintenir une oxygénation suffisante mais elle peut induire des lésions pulmonaires responsables d'une morbidité importante. Le volume pulmonaire est diminué au cours du SDRA ; sa mesure a longtemps été du domaine de la recherche clinique mais une technique de mesure au lit du patient a récemment été proposée : le lavage de l'azote. Ce travail avait pour but de tester la mesure du volume pulmonaire par la technique du lavage de
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Lee, Chi Shing. "A comparison of body density determinations using residual volume and total lung capacity in underwater weighing technique." HKBU Institutional Repository, 1998. http://repository.hkbu.edu.hk/etd_ra/147.

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Koshy, Shyny. "Low tidal volume ventilation as a strategy for inducing lung fluid absorption in the preterm guinea pig." [Kent, Ohio] : Kent State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1247949798.

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Milstein, Claudio F. "Laryngeal function associated with changes in lung volume during voice and speech production in normal speaking women." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/284980.

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The present study explored possible relations between respiratory and laryngeal function associated with changes in lung volume level during phonation. Respiratory, acoustic, aerodynamic, electroglottographic, and videostroboscopic measures were obtained simultaneously for 14 normal female speakers as they sustained vowels and syllable repetitions throughout the vital capacity. Statistical analyses compared group performances between (a) high and mid lung volumes; and (b) mid and low lung volume levels. Significant differences were found for (1) vertical laryngeal position (VLP); (2) amplitude
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Kozian, Alf. "Pathophysiological and Histomorphological Effects of One-Lung Ventilation in the Porcine Lung." Doctoral thesis, Uppsala universitet, Klinisk fysiologi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-108850.

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Thoracic surgical procedures require partial or complete airway separation and the opportunity to exclude one lung from ventilation (one-lung ventilation, OLV). OLV is commonly associated with profound pathophysiological changes that may affect the postoperative outcome. It is injurious in terms of increased mechanical stress including alveolar cell stretch and overdistension, shear forces secondary to repeated tidal collapse and reopening of alveolar units and compression of alveolar vessels. Ventilation and perfusion distribution may thus be affected during and after OLV. The present studies
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Freitas, Rogério Caixeta Moraes de. "Estudo do volume pulmonar fetal na predição da morbidade neonatal em pacientes com lesão pulmonar congênita." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/5/5139/tde-24102016-160727/.

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Introdução: A maioria dos fetos com lesão pulmonar congênita (LPC) são assintomáticos e apresentam baixa morbidade ao nascimento. No entanto, alguns neonatos apresentam desconforto respiratório e necessitam receber de cuidados especiais neste período. Decidir quais casos com LPC precisam nascer em um centro de referência é um desafio. Objetivo: O objetivo deste estudo foi predizer a morbidade neonatal em fetos com LCP sem hidropisia avaliados pela ultrassonografia tridimensional (US3D). Método: Estudo observacional, entre janeiro de 2005 e janeiro de 2016, com fetos com LPC e sem hidropisia. O
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Almgren, Birgitta. "Endotracheal Suction a Reopened Problem." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4798.

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Sealy, Mary Louise 1942. "COMPARISON OF SUSTAINED MAXIMAL INSPIRATION AND PURSE-LIPPED EXHALATION ON LUNG VOLUMES IN HEALTHY VOLUNTEERS." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275494.

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Amaral, Ronaldo Alves do. "Origem f?sica das curvas sigmoidais respirat?rias press?o-volume: recrutamento alveolar e elasticidade n?o-linear." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/13248.

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Made available in DSpace on 2014-12-17T14:13:42Z (GMT). No. of bitstreams: 1 RonaldoAA_TESE_parcial.pdf: 75168 bytes, checksum: a480f84f619eb88bf968f0a55bed0676 (MD5) Previous issue date: 2011-12-09<br>An important unsolved problem in medical science concerns the physical origin of the sigmoidal shape of pressure volume curves of healthy (and some unhealthy) lungs. Such difficulties are expected because the lung, which is the most important structure in the respiratory system, is extremely complex. Its rheological properties are unknown and seem to depend on phenomena occurring from the alve
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Hirota, Adriana Sayuri. "Avaliação da correlação entre a tomografia de impedância elétrica e o volume corrente aplicado durante o suporte ventilatório mecânico invasivo." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/5/5150/tde-20032019-081435/.

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Introdução: A tomografia de impedância elétrica (TIE) é uma técnica de imagem não invasiva que mensura o potencial elétrico na superfície torácica através de eletrodos colocados ao redor do tórax. Essas medidas são transformadas em uma imagem bidimensional da distribuição da impedância elétrica no tórax. Esse instrumento detecta modificações da densidade pulmonar e distribuição do volume corrente. Entretanto, é necessário melhor avaliação da sua eficiência em estimar o volume corrente (VT) a cada ciclo ventilatório. O objetivo do estudo é avaliar a correlação do volume estimado pela TIE com o
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45

Salge, João Marcos. "Estudo funcional do acometimento das pequenas vias aéreas nas pneumopatias intersticiais fibrosantes." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/5/5150/tde-19042011-150516/.

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Apesar de bem estabelecido em termos morfológicos, a repercussão funcional do envolvimento das pequenas vias aéreas nas pneumopatias intersticiais fibrosantes (PIF) permanece controversa. O presente estudo avaliou de maneira invasiva e não-invasiva (espirometria, volume de fechamento, variação da complacência dinâmica com a freqüência respiratória) a função das pequenas vias aéreas em portadores de PIF, comparando com grupo controle e correlacionando com índices morfométricos de biópsias. Os testes funcionais não diferenciaram portadores da doença dos controles quanto ao acomentimento das peq
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46

Halaweish, Ahmed Fathi. "Exploration of multi-volumetric hyperpolarized 3Helium MRI: cross-correlation with quantitative MDCT." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/2711.

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Hyperpolarized 3Helium (HP 3He) magnetic resonance imaging (MRI) has provided considerable insights into the anatomical structures and localized physiological phenomenon involved in pulmonary ventilation. The increasing mortality rates of pulmonary diseases such as COPD, gives rise to the need for sensitive and regional assessments of early disease conditions in attempts to decrease mortality and improve lifestyles. Evaluation of the HP 3He MRI diffusion weighted measurements of lung microstructure, demonstrated a statistically significant relationship between microstructure expansion and degr
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Cross, Troy James. "The Energetic Cost of Breathing During Strenuous Exercise in Healthy Adults and Patients with Heart Failure." Thesis, Griffith University, 2012. http://hdl.handle.net/10072/366408.

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The primary aim of this Thesis is to further explore the relationship between respiratory muscle energetics and the O2 cost of strenuous exercise, as applied to healthy individuals and patients with Heart Failure (HF). A secondary aim was to develop an objective method of determining the gas-exchange and respiratory compensation thresholds during incremental cycling in young, healthy individuals. The results of the four Experiments conducted to achieve these aims are presented in this Thesis.<br>Thesis (PhD Doctorate)<br>Doctor of Philosophy (PhD)<br>School of Physiotherapy and Exercise Scienc
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Lê, Tuan Thành. "Lung function by plethysmography : a new method in Vietnam for asthma diagnosis." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0341/document.

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La fréquence de l’asthme augmente au Vietnam, mais les moyens de diagnostic et d’évaluation fonctionnelle sont limités. Une étude précédente utilisant la technique des oscillations forcées a montré une différence de résistance des voies aériennes entre enfants français et vietnamiens à l’âge de 10 ans mais pas à 6 ans. Si l’hypothèse d’une différence ethnique significative est correcte, alors des différences semblables devraient aussi exister à l’âge adulte. Pour tester l’hypothèse, une étude par pléthysmographie a été mise en place pour mesurer la résistance des voies aériennes et la résistan
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49

Iyer, Krishna S. "Dual energy CT based approach to assessing early pulmonary vascular dysfunction in smoking-associated inflammatory lung disease." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/3112.

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CT is a powerful method for noninvasive assessment of the lung. Advancements to CT technology have guided the high-resolution structural and functional assessment of lung diseases. This has helped make the transition from characterizing the severity of lung disease to novel phenotyping of disease subtypes. Chronic obstructive pulmonary disease (COPD) is a spectrum of inflammatory lung disease affecting lung parenchyma, airways, and the pulmonary and systemic vasculature. Quantitative CT-based measures have largely focused on quantifying the extent of airway and parenchymal damage with disease.
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50

Vladimir, Veselinov. "Procena stanja volemije kod pacijenata na hemodijalizi primenom ultrazvuka pluća." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110216&source=NDLTD&language=en.

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Uvod: Pacijenti na hemodijalizi (HD) imaju visoku stopu ukupnog i kardiovaskularnog morbiditeta i mortaliteta. Preko 80% bolesnika na HD ima neki tip kardiovaskularne bolesti. Hipervolemija značajno doprinosi njihovom nastanku, dovodeći do hipertenzije, hipertrofije miokarda leve komore, srčane insuficijencije i nastanka plućnog edema. Procena stanja volemije kod pacijenata na HD najče&scaron;će se vr&scaron;i kliničkim pregledom, uprkos nezadovoljavajućoj specifičnosti i senzitivnosti. Hipervolemija je prisutna kod određenog broja pacijenata, uprkos normotenziji, odsustvu edema i urednom ausk
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