keyword
MENU ▼
Read by QxMD icon Read
search

Ct thorax

keyword
https://www.readbyqxmd.com/read/28208025/aeol-10150-mitigates-radiation-induced-lung-injury-in-the-nonhuman-primate-morbidity-and-mortality-are-administration-schedule-dependent
#1
Thomas J MacVittie, Allison Gibbs, Ann M Farese, Kory Barrow, Alexander Bennett, Cheryl Taylor-Howell, Abdul Kazi, Karl Prado, George Parker, William Jackson Iii
Pneumonitis and fibrosis are potentially lethal, delayed effects of acute radiation exposure. In this study, male rhesus macaques received whole-thorax lung irradiation (WTLI) with a target dose of 10.74 Gy prescribed to midplane at a dose rate of 0.80 ± 0.05 Gy/min using 6 MV linear accelerator-derived photons. The study design was comprised of four animal cohorts: one control and three treated with AEOL 10150 (n = 20 animals per cohort). AEOL 10150, a metalloporphyrin antioxidant, superoxide dismutase mimetic was administered by daily subcutaneous injection at 5 mg/kg in each of three schedules, beginning 24 ± 2 h postirradiation: from day 1 to day 28, day 1 to day 60 or a divided regimen from day 1 to day 28 plus day 60 to day 88...
February 16, 2017: Radiation Research
https://www.readbyqxmd.com/read/28203068/ectopic-fat-accumulation-in-patients-with-copd-an-eclipse-substudy
#2
Mickaël Martin, Natalie Almeras, Jean-Pierre Després, Harvey O Coxson, George R Washko, Isabelle Vivodtzev, Emiel Fm Wouters, Erica Rutten, Michelle C Williams, John T Murchison, William MacNee, Don D Sin, François Maltais
BACKGROUND: Obesity is increasingly associated with COPD, but little is known about the prevalence of ectopic fat accumulation in COPD and whether this can possibly be associated with poor clinical outcomes and comorbidities. The Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints (ECLIPSE) substudy tested the hypothesis that COPD is associated with increased ectopic fat accumulation and that this would be associated with COPD-related outcomes and comorbidities...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28182298/looking-into-the-puparium-micro-ct-visualization-of-the-internal-morphological-changes-during-metamorphosis-of-the-blow-fly-calliphora-vicina-with-the-first-quantitative-analysis-of-organ-development-in-cyclorrhaphous-dipterans
#3
Daniel Martín-Vega, Thomas J Simonsen, Martin J R Hall
Metamorphosis of cyclorrhaphous flies takes place inside a barrel-like puparium, formed by the shrinking, hardening and darkening of the third-instar larval cuticle. The opacity of this structure hampers the visualization of the morphological changes occurring inside and therefore a full understanding of the metamorphosis process. Here, we use micro-computed tomography (micro-CT) to describe the internal morphological changes that occur during metamorphosis of the blow fly, Calliphora vicina Robineau-Desvoidy 1830 (Diptera: Calliphoridae) at a greater temporal resolution than anything hitherto published...
February 9, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28168371/improvement-of-image-quality-and-dose-management-in-ct-fluoroscopy-by-iterative-3d-image-reconstruction
#4
Oliver S Grosser, Christian Wybranski, Dennis Kupitz, Maciej Powerski, Konrad Mohnike, Maciej Pech, Holger Amthauer, Jens Ricke
OBJECTIVES: The objective of this study was to assess the influence of an iterative CT reconstruction algorithm (IA), newly available for CT-fluoroscopy (CTF), on image noise, readers' confidence and effective dose compared to filtered back projection (FBP). METHODS: Data from 165 patients (FBP/IA = 82/74) with CTF in the thorax, abdomen and pelvis were included. Noise was analysed in a large-diameter vessel. The impact of reconstruction and variables (e.g. X-ray tube current I) influencing noise and effective dose were analysed by ANOVA and a pairwise t-test with Bonferroni-Holm correction...
February 6, 2017: European Radiology
https://www.readbyqxmd.com/read/28166077/a-rare-case-of-bilateral-aspergillomas-in-a-patient-of-ankylosing-spondylitis
#5
A Das, S Pandit, S K Das, S Basuthakur, S Das
Pulmonary involvement by Aspergillus sp. mainly includes allergic bronchopulmonary aspergillosis, aspergilloma, and invasive aspergillosis. Aspergilloma (Fungal ball) is the most common form of aspergillous pulmonary involvement, which occurs in preexisting pulmonary cavities, especially secondary to pulmonary tuberculosis. Ankylosing spondylitis is a rare cause of upper lobe fibro-cavitary lesions in pulmonary parenchyma. It may also lead to development of fungal balls in pulmonary cavities. Most common presentation is mild to massive hemoptysis; dyspnoea, chronic cough, expectoration may be other presentation; even the patient may remain asymptomatic...
April 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/28138732/limited-value-of-ga-68-dotatoc-pet-ct-in-routine-screening-of-patients-with-multiple-endocrine-neoplasia-type-1
#6
Max B Albers, Damiano Librizzi, Caroline L Lopez, Jerena Manoharan, Jonas C Apitzsch, Emily P Slater, Carmen Bollmann, Peter H Kann, Detlef K Bartsch
BACKGROUND: Routine screening is recommended for patients with multiple endocrine neoplasia type 1 (MEN1) to enable early detection and treatment of associated neuroendocrine neoplasms (NEN). Gallium(68)-DOTATOC-Positron emission tomography combined with computed tomography (Ga-68-DOTATOC-PET-CT) is a very sensitive and specific imaging technique for the detection of sporadic neuroendocrine tumors. The present study evaluated the value of Ga-68-DOTATOC-PET-CT in routine screening of patients with MEN1...
January 30, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28124966/-a-case-of-bronchiolitis-obliterans-secondary-to-human-metapneumovirus-bronchiolitis
#7
Osman Yeşilbaş, Esra Şevketoğlu, Hasan Serdar Kıhtır, Mey Talip Petmezci, Elif Bato, Seda Balkaya, Nevin Hatipoğlu, Mert Ahmet Kuşkucu, Figen Palabıyık, Erkan Çakır
Human metapneumovirus (hMPV), formerly classified in Paramyxoviridae family is now moved into Pneumoviridae, which was described as a novel family. It causes upper and lower respiratory tract infections (LRTIs) usually in children younger than five years old. The recent epidemiological studies indicated that hMPV is the second most frequently detected virus in LRTIs of young children, following the respiratory syncytial virus (RSV). Bronchiolitis obliterans (BO) is a chronic obstructive lung disease characterized by fibrosis of the distal respiratory airways...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28121374/lobe-based-image-reconstruction-in-electrical-impedance-tomography
#8
Benjamin Schullcke, Bo Gong, Sabine Krueger-Ziolek, Merryn Tawhai, Andy Adler, Ullrich Mueller-Lisse, Knut Moeller
PURPOSE: Electrical Impedance Tomography (EIT) is an imaging modality used to generate two-dimensional cross-sectional images representing impedance change in the thorax. The impedance of lung tissue changes with change in air content of the lungs; hence, EIT can be used to examine regional lung ventilation in patients with abnormal lungs. In lung EIT, electrodes are attached around the circumference of the thorax to inject small alternating currents and measure resulting voltages. In contrast to X-ray computed tomography (CT), EIT images do not depict a thorax slice of well defined thickness, but instead visualize a lens-shaped region around the electrode plane, which results from diffuse current propagation in the thorax...
December 9, 2016: Medical Physics
https://www.readbyqxmd.com/read/28107411/xenon-enhanced-dual-energy-ct-imaging-in-combined-pulmonary-fibrosis-and-emphysema
#9
Keishi Sugino, Masahiro Kobayashi, Yasuhiko Nakamura, Kyoko Gocho, Fumiaki Ishida, Kazutoshi Isobe, Nobuyuki Shiraga, Sakae Homma
BACKGROUND: Little has been reported on the feasibility of xenon-enhanced dual-energy computed tomography (Xe-DECT) in the visual and quantitative analysis of combined pulmonary fibrosis and emphysema (CPFE). OBJECTIVES: We compared CPFE with idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD), as well as correlation with parameters of pulmonary function tests (PFTs). METHODS: Studied in 3 groups were 25 patients with CPFE, 25 with IPF without emphysema (IPF alone), 30 with COPD...
2017: PloS One
https://www.readbyqxmd.com/read/28100948/malignant-proliferating-trichilemmal-tumour-of-the-scalp-with-intra-cranial-extension-and-lung-metastasis-a-case-report
#10
Lancelot Lobo, Amol Dilip Amonkar, V V S M Kumar Dontamsetty
Malignant proliferating trichilemmal tumour (MPTT) is a rare cutaneous tumour predominantly affecting the scalp, eyelids, neck and face of elderly women. It is a large, solitary, multilobulated lesion that may arise within a pilar cyst. These tumours are largely benign, often cystic and are characterized by trichilemmal keratinisation. However at times, the tumour has an aggressive clinical course and a propensity for distant metastasis. We report a case of a 29-year-old male who presented with a scalp swelling...
December 2016: Indian Journal of Surgery
https://www.readbyqxmd.com/read/28100899/effectiveness-of-computed-tomography-attenuation-values-in-characterization-of-pericardial-effusion
#11
Mehmet Serkan Çetin, Elif Hande Özcan Çetin, Mustafa Özdemir, Serkan Topaloğlu, Dursun Aras, Ahmet Temizhan, Sinan Aydoğdu
OBJECTIVE: The aim of this study was to evaluate the effectiveness of computed tomography (CT) attenuation values in the characterization of pericardial effusion. METHODS: This study consisted of 96 patients with pericardial effusion who underwent pericardiocentesis. For further diagnostic evaluation of pericardial effusion, all the patients were assessed by thorax CT. CT attenuation values were measured from at least 5 different areas of pericardial fluid by specifying the largest region of interest...
January 17, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28094413/electrical-impedance-tomography-for-lung-ventilation-monitoring-of-the-dog
#12
Simon Gloning, Korbinian Pieper, Martin Zoellner, Andrea Meyer-Lindenberg
BACKGROUND: Electrical impedance tomography (EIT) is a radiation free technique which takes advantage of the different electrical conductivities of different tissues. Its main field of application is lung ventilation monitoring. The aim of this prospective study was to evaluate the feasibility of collecting EIT information on a sample of dogs with different thoracic shapes under clinical conditions by connecting an electrode belt without fur clipping. MATERIAL AND METHODS: Fifteen pulmonary healthy dogs were anaesthetized, positioned in sternal recumbency and ventilated in a pressure-controlled mode at three different positive end-expiratory pressure levels (PEEP) of 0, 5 and 10 cmH2O for five breaths each, with a peak inspiratory pressure of 15 cmH2O...
February 9, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28079960/successful-medical-management-of-a-domestic-longhair-cat-with-subdural-intracranial-empyema-and-multifocal-pneumonia
#13
Thomas J A Cardy, Richard Lam, Laureen M Peters, Philippa J McLaren, Màrian Matas Riera, Steven De Decker
OBJECTIVE: To describe a case of successful medical management of subdural intracranial empyema and multifocal pneumonia in a domestic longhaired cat. CASE SUMMARY: A 7-year-and-8-month-old male neutered domestic longhair cat presented with tachypnea, respiratory compromise, vestibular ataxia, obtundation, left-sided head tilt, and multiple cranial nerve deficits. Neuroanatomical localization was multifocal with central vestibular involvement. Magnetic resonance imaging of the head indicated diffuse subdural empyema, mainly affecting the middle cranial fossa and the right cerebrum...
January 12, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28073871/benign-cystic-mediastinal-teratoma-presenting-as-a-massive-pleural-effusion-in-a-17-year-old-boy
#14
Annalisa Montebello, Adrian Mizzi, Paul John Cassar, Karen Cassar
Mediastinal teratomas are a rare, albeit an important differential diagnosis of anterior/middle mediastinal masses in young adults and various atypical presentations have been reported. The authors report a case of a 17-year-old boy who presented with a 2-month history of worsening shortness of breath and pleuritic chest pain. A massive left-sided pleural fluid collection was seen on a chest radiograph (CXR). The pleural fluid was drained and a CT Thorax confirmed the presence of a cystic mass. Following re-accumulation of the fluid, thoracotomy was performed and a benign mediastinal teratoma excised...
January 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28068966/glenoid-morphology-in-light-of-anatomical-and-reverse-total-shoulder-arthroplasty-a-dissection-and-3d-ct-based-study-in-male-and-female-body-donors
#15
Sandra Mathews, Marco Burkhard, Nabil Serrano, Karl Link, Martin Häusler, Nakita Frater, Ingeborg Franke, Helena Bischofberger, Florian M Buck, Dominic Gascho, Michael Thali, Steffen Serowy, Magdalena Müller-Gerbl, Gareth Harper, Ford Qureshi, Thomas Böni, Hans-Rudolf Bloch, Oliver Ullrich, Frank-Jakobus Rühli, Elisabeth Eppler
BACKGROUND: Placement of the glenoid baseplate is of paramount importance for the outcome of anatomical and reverse total shoulder arthroplasty. However, the database around glenoid size is poor, particularly regarding small scapulae, for example, in women and smaller individuals, and is derived from different methodological approaches. In this multimodality cadaver study, we systematically examined the glenoid using morphological and 3D-CT measurements. METHODS: Measurements of the glenoid and drill hole tunnel length for superior baseplate screw placement were recorded to define size of the glenoid and the distance to the scapular notch on cadaveric specimens...
January 10, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28048862/th-e-202-02-the-use-of-hypoxia-pet-imaging-for-radiotherapy
#16
J Humm
: PET/CT is a very important imaging tool in the management of oncology patients. PET/CT has been applied for treatment planning and response evaluation in radiation therapy. This educational session will discuss: 1. Pitfalls and remedies in PET/CT imaging for RT planning 2. The use of hypoxia PET imaging for radiotherapy 3. PET for tumor response evaluation The first presentation will address the issue of mis-registration between the CT and PET images in the thorax and the abdomen. We will discuss the challenges of respiratory gating and introduce an average CT technique to improve the registration for dose calculation and image-guidance in radiation therapy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048579/su-f-t-389-validation-in-4d-dosimetry-using-dynamic-phantom
#17
C Lin, T Huang, C Lin, H Nien, P Tu, L Lui, C Wu
PURPOSE: Tumor motion due to respiration causes the uncertainties during the radiotherapy. This study aims to find the differences between planning dose by treatment planning and the received dose using dynamic phantom. METHODS: Respiratory motion was simulated by the DYNAMIC THORAX PHANTOM (Model 008A). 4D-CT scans and maximum intensity projection (MIP) images for GTV were acquired for analysis. The amplitude of craniocaudal tumor motion including 2mm, 5mm, 10mm and 20mm with 3cm2 tumor size were performed in this study...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048537/su-c-206-04-region-specific-total-variation-regularization-for-x-ray-ct-reconstruction
#18
Q Xu, H Han, L Xing
PURPOSE: Total-variation (TV) regularization methods are very effective to handle the non-sufficient data reconstruction, such as few-view problem, low-dose data, etc. Usually one single regularization parameter is employed to balance the data fidelity and the TV minimization penalty in all regions of the object. However, noise and structural details vary from region to region. Here we proposed a method to select the regularization parameter adaptively by the region specific noise. METHODS: The image was reconstructed by minimizing the data fidelity term and the TV term alternatively...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048448/su-f-e-10-student-driven-exploration-of-radiographic-material-properties-phantom-construction-and-clinical-workflows-or-the-extraordinary-life-of-candy-man
#19
R N Mahon, M J Riblett, G D Hugo
PURPOSE: To develop a hands-on learning experience that explores the radiological and structural properties of everyday items and applies this knowledge to design a simple phantom for radiotherapy exercises. METHODS: Students were asked to compile a list of readily available materials thought to have radiation attenuation properties similar to tissues within the human torso. Participants scanned samples of suggested materials and regions of interest (ROIs) were used to characterize bulk attenuation properties...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048417/th-e-202-00-pet-for-radiation-therapy
#20
Wei Lu
: PET/CT is a very important imaging tool in the management of oncology patients. PET/CT has been applied for treatment planning and response evaluation in radiation therapy. This educational session will discuss: 1. Pitfalls and remedies in PET/CT imaging for RT planning 2. The use of hypoxia PET imaging for radiotherapy 3. PET for tumor response evaluation The first presentation will address the issue of mis-registration between the CT and PET images in the thorax and the abdomen. We will discuss the challenges of respiratory gating and introduce an average CT technique to improve the registration for dose calculation and image-guidance in radiation therapy...
June 2016: Medical Physics
keyword
keyword
23458
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"