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https://www.readbyqxmd.com/read/28432822/focal-liver-lesions-segmentation-and-classification-in-nonenhanced-t2-weighted-mri
#1
Ilias Gatos, Stavros Tsantis, Maria Karamesini, Stavros Spiliopoulos, Dimitris Karnabatidis, John D Hazle, George C Kagadis
PURPOSE: To automatically segment and classify focal liver lesions (FLLs) on nonenhanced T2-weighted magnetic resonance imaging (MRI) scans using a computer-aided diagnosis (CAD) algorithm. METHODS: 71 FLLs (30 benign lesions, 19 hepatocellular carcinomas, and 22 metastases) on T2-weighted MRI scans were delineated by the proposed CAD scheme. The FLL segmentation procedure involved wavelet multiscale analysis to extract accurate edge information and mean intensity values for consecutive edges computed using horizontal and vertical analysis that were fed into the subsequent fuzzy C-means algorithm for final FLL border extraction...
April 22, 2017: Medical Physics
https://www.readbyqxmd.com/read/28432731/association-between-progressive-hepatic-morphology-changes-on-serial-mr-imaging-and-clinical-outcome-in-primary-sclerosing-cholangitis
#2
Yu Xuan Kitzing, Siobhan A Whitley, Sara S Upponi, Brijesh Srivastava, Graeme Jm Alexander, David J Lomas
INTRODUCTION: Hepatic morphology changes are well described in Primary Sclerosing Cholangitis and characterised by a combination of atrophy and hypertrophy changes. This study investigates the relationship between progression of these changes over time and clinical outcome in patients with PSC. METHODS: Fifty-three patients with PSC (mean age 44, 28 males and 25 females) who underwent serial MRI liver studies at least one year apart were identified. The first and the last MRI studies were selected for the retrospective analysis...
April 22, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28432408/a-rare-anastomosis-between-the-common-hepatic-artery-and-the-superior-mesenteric-artery-a-case-report
#3
Łukasz Olewnik, Grzegorz Wysiadecki, Michał Polguj, Mirosław Topol
For decades, anastomoses between unpaired branches of the abdominal aorta have attracted the attention of anatomists, surgeons and radiologists, due to their significance in many clinical procedures. This report presents a rare anastomosis between the common hepatic artery and the superior mesenteric artery, which gave off three branches to the jejunum. The diameter of the anastomosis measured at the point of its branching off the common hepatic artery and at the level of union with the superior mesenteric artery was 4...
April 21, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28432407/the-arterial-supply-of-the-nipple-areola-complex-nac-and-its-relations-an-analysis-of-angiographic-ct-imaging-for-breast-pedicle-design
#4
Aaron D Stirling, Conor P Murray, Mark A Lee
PURPOSE: To investigate the blood supply to the nipple areola complex (NAC) on thoracic CT angiograms (CTA) to improve breast pedicle design in reduction mammoplasty. METHODS: In a single centre, CT scans of the thorax were retrospectively reviewed for suitability by a cardiothoracic radiologist. Suitable scans had one or both breasts visible in extended fields, with contrast enhancement of breast vasculature in a female patient. The arterial sources, intercostal space perforated, glandular/subcutaneous course, vessel entry point, and the presence of periareolar anastomoses were recorded for the NAC of each breast...
April 21, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28432395/the-magnetic-resonance-imaging-appearance-of-the-anterolateral-ligament-of-the-knee-in-association-with-anterior-cruciate-rupture
#5
Jonathan D Kosy, Peter J Schranz, Anish Patel, Rahul Anaspure, Vipul I Mandalia
OBJECTIVE: The magnetic resonance imaging (MRI) appearance of the anterolateral ligament (ALL) has been described. However, the appearance of this structure and injury, in the presence of anterior cruciate ligament (ACL) injury, is less well defined. We studied the incidence of injury to the ALL and the pattern of this injury on MRI. MATERIALS AND METHODS: Following Institutional Review Board approval, a retrospective study of 375 consecutive MRI studies was performed...
April 21, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28431795/shear-wave-liver-elastography-with-a-propagation-map-diagnostic-performance-and-inter-observer-correlation-for-hepatic-fibrosis-in-chronic-hepatitis
#6
Eun Sun Lee, Jong Beum Lee, Hwi Ryong Park, Jeongin Yoo, Ji In Choi, Hyun Woong Lee, Hyung Joon Kim, Byung Ihn Choi, Hyun Jeong Park, Sung Bin Park
The aim of this study was to determine the performance of shear wave elastography (SWE) with a propagation map in the diagnosis of hepatic fibrosis, and to assess its reliability with transient elastography (TE) as the reference standard. Our prospective study included 115 consecutive patients with suspected or alleged chronic hepatitis. Patients underwent SWE by two different operators and TE by sonographers on the same day. The correlation coefficient of the intra-class correlation test between an experienced radiologist and a third-year radiology resident was 0...
April 18, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28430715/computed-tomography-of-the-head-and-neck-region-for-tumor-staging-comparison-of-dual-source-dual-energy-and-low-kilovolt-single-energy-acquisitions
#7
Matthias Stefan May, Joscha Bruegel, Michael Brand, Marco Wiesmueller, Bernhard Krauss, Thomas Allmendinger, Michael Uder, Wolfgang Wuest
PURPOSE: The aim of this study was to intra-individually compare the image quality obtained by dual-source, dual-energy (DSDE) computed tomography (CT) examinations and different virtual monoenergetic reconstructions to a low single-energy (SE) scan. MATERIALS AND METHODS: Third-generation DSDE-CT was performed in 49 patients with histologically proven malignant disease of the head and neck region. Weighted average images (WAIs) and virtual monoenergetic images (VMIs) for low (40 and 60 keV) and high (120 and 190 keV) energies were reconstructed...
April 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28430603/tumor-heterogeneity-assessed-by-texture-analysis-on-contrast-enhanced-ct-in-lung-adenocarcinoma-association-with-pathologic-grade
#8
Ying Liu, Shichang Liu, Fangyuan Qu, Qian Li, Runfen Cheng, Zhaoxiang Ye
Objectives To investigate whether texture features on contrast-enhanced computed tomography (CECT) images of lung adenocarcinoma have association with pathologic grade.Methods A cohort of 148 patients with surgically operated adenocarcinoma was retrospectively reviewed. Fifty-four CT features of the primary lung tumor were extracted from CECT images using open-source 3D Slicer software; meanwhile, enhancement homogeneity was evaluated by two radiologists using visual assessment. Multivariate logistic regression analysis was performed to determine significant image indicator of pathologic grade...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430556/pneumoconioses-radiographs-in-a-large-population-of-u-s-coal-workers-variability-in-a-reader-and-b-reader-classifications-by-using-the-international-labour-office-classification
#9
Cara N Halldin, David J Blackley, Edward L Petsonk, A Scott Laney
Purpose To assess the level of concordance between chest radiographic classifications of A and B Readers in a national surveillance program offered to U.S. coal miners over an approximate 36-year period. Materials and Methods The National Institute for Occupational Safety and Health (NIOSH) Coal Workers' Health Surveillance Program (CWHSP) is a surveillance program with nonresearch designation and is exempt from Human Subjects Review Board approval (11-DRDS-NR03). Thirty-six years of data (1979-2015) from the CWHSP were analyzed, which included all conventional screen-film radiographs with a classification by at least one A Reader and one B Reader...
April 21, 2017: Radiology
https://www.readbyqxmd.com/read/28430540/demystifying-orbital-emergencies-a-pictorial-review
#10
Viet D Nguyen, Achint K Singh, Wilson B Altmeyer, Bundhit Tantiwongkosi
Imaging of the orbit plays an important role in the workup of orbital emergencies. Orbital imaging is particularly useful in the emergency department, where clinical history and physical examination may be limited or delayed until the exclusion or treatment of more life-threatening conditions. Cross-sectional orbital imaging with multidetector computed tomography (CT) and magnetic resonance (MR) imaging is commonly performed in addition to ultrasonography. In an emergent setting, CT is the preferred modality when evaluating for intraorbital foreign bodies, fractures, or calcifications within a mass lesion...
April 21, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28429414/evaluation-of-t2-weighted-versus-short-tau-inversion-recovery-sagittal-sequences-in-the-identification-and-localization-of-canine-intervertebral-disc-extrusion-with-low-field-magnetic-resonance-imaging
#11
Daniel Housley, Abby Caine, Giunio Cherubini, Olivier Taeymans
Sagittal T2-weighted sequences (T2-SAG) are the foundation of spinal protocols when screening for the presence of intervertebral disc extrusion. We often utilize sagittal short-tau inversion recovery sequences (STIR-SAG) as an adjunctive screening series, and experience suggests that this combined approach provides superior detection rates. We hypothesized that STIR-SAG would provide higher sensitivity than T2-SAG in the identification and localization of intervertebral disc extrusion. We further hypothesized that the parallel evaluation of paired T2-SAG and STIR-SAG series would provide a higher sensitivity than could be achieved with either independent sagittal series when viewed in isolation...
April 20, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28429207/organizational-and-welfare-mode-of-breast-centers-network-a-survey-of-sicilian-radiologists
#12
Maria Adele Marino, Orazio Pennisi, Annalisa Donia, Carmelo Sofia, Claudio Guerra, Carmelo Privitera, Placido Romeo
The European Society of Breast Cancer Specialists has created quality indicators for breast units to establish the minimum standards of care for patients. In Italy, each region differs, indeed, in terms of health care and services warranted to patients suffering from breast cancer. Since Sicilian Regional Administration today is still disregarding implementation of the provisions contained in the proposal of the Ministry of Health entitled "Guidelines on Organizational and Health Care Methods of Breast Centers Network" in November 2015 the Sicilian Regional Group of the Italian Society of Radiology (SIRM) decided to carry out a survey to see the position of the Sicilian Healthcare System and define the gap to bridge over...
April 20, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28429205/comparison-of-digital-tomosynthesis-and-computed-tomography-for-lung-nodule-detection-in-sos-screening-program
#13
Maurizio Grosso, Roberto Priotto, Donatella Ghirardo, Alberto Talenti, Emanuele Roberto, Luca Bertolaccini, Alberto Terzi, Stéphane Chauvie
PURPOSE: To compare the lung nodules' detection of digital tomosynthesis (DTS) and computed tomography (CT) in the context of the SOS (Studio OSservazionale) prospective screening program for lung cancer detection. MATERIALS AND METHODS: One hundred and thirty-two of the 1843 subjects enrolled in the SOS study underwent CT because non-calcified nodules with diameters larger than 5 mm and/or multiple nodules were present in DTS. Two expert radiologists reviewed the exams classifying the nodules based on their radiological appearance and their dimension...
April 20, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28429195/computer-assisted-diagnosis-system-for-breast-cancer-in-computed-tomography-laser-mammography-ctlm
#14
Afsaneh Jalalian, Syamsiah Mashohor, Rozi Mahmud, Babak Karasfi, M Iqbal Saripan, Abdul Rahman Ramli
Computed tomography laser mammography (Eid et al. Egyp J Radiol Nucl Med, 37(1): p. 633-643, 1) is a non-invasive imaging modality for breast cancer diagnosis, which is time-consuming and challenging for the radiologist to interpret the images. Some issues have increased the missed diagnosis of radiologists in visual manner assessment in CTLM images, such as technical reasons which are related to imaging quality and human error due to the structural complexity in appearance. The purpose of this study is to develop a computer-aided diagnosis framework to enhance the performance of radiologist in the interpretation of CTLM images...
April 20, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28429056/prognostic-significance-of-supradiaphragmatic-lymph-nodes-at-initial-presentation-in-patients-with-stage-iii-high-grade-serous-ovarian-cancer
#15
L J McIntosh, A C O'Neill, S Bhanusupriya, S A Matalon, A D Van den Abbeele, N H Ramaiya, A B Shinagare
PURPOSE: To identify the optimal size threshold and to assess the prognostic significance of supradiaphragmatic lymph nodes at initial presentation of patients with high-grade serous ovarian cancer (HGSC). METHODS: This IRB-approved, HIPAA-compliant retrospective study included baseline pretreatment staging abdominal CTs of 88 women (mean age 62 years, SD 10.4, range 29-85) with FIGO stage III HGSC. Patients with stage IV disease were excluded due to worse prognosis and management guided by distant metastases...
April 20, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28428913/comparison-of-magnetic-resonance-imaging-and-radiographs-for-evaluation-of-carpal-osteoarthritis
#16
Angela E Li, Steve K Lee, Schneider K Rancy, Alissa J Burge, Hollis G Potter, Scott W Wolfe
Background We sought to evaluate the interobserver and intraobserver reliability of radiographs and magnetic resonance imaging (MRI) for grading of osteoarthritis in patients with scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC), and to determine whether MRI is more likely than radiographs to detect carpal osteoarthritis. Methods Radiographs and MR studies of 46 patients with SLAC and SNAC arthritis were reviewed by two hand surgeons and two radiologists and were graded according to severity of osteoarthritis at seven carpal joints...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28428658/what-radiologists-need-to-know-about-3d-printing-and-its-main-applications-in-musculoskeletal-imaging
#17
Francisco Abaeté Chagas-Neto, Francisco Coracy Carneiro Monteiro, Eduardo Lima da Rocha, Everaldo Gregio-Junior, Marcello Henrique Nogueira-Barbosa
No abstract text is available yet for this article.
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28428656/what-radiologists-should-know-about-tomographic-evaluation-of-acute-diverticulitis-of-the-colon
#18
Aline de Araújo Naves, Giuseppe D'Ippolito, Luis Ronan Marquez Ferreira Souza, Sílvia Portela Borges, Glênio Moraes Fernandes
Acute diverticulitis of the colon is a common indication for computed tomography, and its diagnosis and complications are essential to determining the proper treatment and establishing the prognosis. The adaptation of the surgical classification for computed tomography has allowed the extent of intestinal inflammation to be established, the computed tomography findings correlating with the indication for treatment. In addition, computed tomography has proven able to distinguish among the main differential diagnoses of diverticulitis...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28428651/utility-of-the-inspiratory-phase-in-high-resolution-computed-tomography-evaluations-of-pediatric-patients-with-bronchiolitis-obliterans-after-allogeneic-bone-marrow-transplant-reducing-patient-radiation-exposure
#19
Paulo Henrique Togni Filho, João Luiz Marin Casagrande, Henrique Manoel Lederman
OBJECTIVE: To evaluate the utility of the inspiratory phase in high-resolution computed tomography (HRCT) of the chest for the diagnosis of post-bone marrow transplantation bronchiolitis obliterans. MATERIALS AND METHODS: This was a retrospective, observational, cross-sectional study. We selected patients of either gender who underwent bone marrow transplantation and chest HRCT between March 1, 2002 and December 12, 2014. Ages ranged from 3 months to 20.7 years...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28428650/routine-mammography-an-opportunity-for-the-diagnosis-of-chronic-degenerative-diseases-a-cross-sectional-study
#20
Flávio Augusto Teixeira Ronzani, Filomena Maria Kirchmaier, Nathália Mussi Monteze, Edson José de Carvalho Magacho, Marcus Gomes Bastos, Natália Maria da Silva Fernandes
OBJECTIVE: The aim of this study was to evaluate breast arterial calcification (BAC) detected on routine mammography, analyzing its association with chronic degenerative disease. MATERIALS AND METHODS: This was a cross-sectional study involving women treated at a specialized outpatient clinic for high-risk hypertension, diabetes, or chronic kidney disease, as well as volunteers who participated in a study to validate a method of screening for occult renal disease...
March 2017: Radiologia Brasileira
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