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Academic Radiology

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https://www.readbyqxmd.com/read/28927581/differential-aging-signals-in-abdominal-ct-scans
#1
Nikita V Orlov, Sokratis Makrogiannis, Luigi Ferrucci, Ilya G Goldberg
RATIONALE AND OBJECTIVES: Changes in the composition of body tissues are major aging phenotypes, but they have been difficult to study in depth. Here we describe age-related change in abdominal tissues observable in computed tomography (CT) scans. We used pattern recognition and machine learning to detect and quantify these changes in a model-agnostic fashion. MATERIALS AND METHODS: CT scans of abdominal L4 sections were obtained from Baltimore Longitudinal Study of Aging (BLSA) participants...
September 15, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28927580/low-intensity-vibration-therapy-for-bone-health-in-renal-osteodystrophy
#2
EDITORIAL
Sachin Sharma, Garry E Gold
No abstract text is available yet for this article.
September 15, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28927579/multicenter-research-studies-in-radiology
#3
Brittany Z Dashevsky, Zachary L Bercu, Priya R Bhosale, Kirsteen R Burton, Arindam R Chatterjee, L Alexandre R Frigini, Laura Heacock, Edward H Herskovits, James T Lee, Naveen Subhas, Ashish P Wasnik, Soterios Gyftopoulos
RATIONALE AND OBJECTIVES: Here we review the current state of multicenter radiology research (MRR), and utilize a survey of experienced researchers to identify common advantages, barriers, and resources to guide future investigators. MATERIALS AND METHODS: The Association of University Radiologists established a Radiology Research Alliance task force, Multi-center Research Studies in Radiology, composed of 12 society members to review MRR. A REDCap survey was designed to gain more insight from experienced researchers...
September 15, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28888381/long-term-observation-of-ct-guided-radiofrequency-ablation-of-lung-neoplasm-in-476-consecutive-patients-by-a-thoracic-surgical-service-a-single-institutional-experience
#4
Bing-Yang Huang, Jun-Jun Zhou, Zhi-Qi Yu, Xiao-Yong Song, Yi Lin, Xin-Min Li, Lu Li
RATIONALE AND OBJECTIVES: The aim of the study was to evaluate the overall survival (OS) rate, progression survival rate, and local control rate over 10 years of medically inoperable patients with lung cancer undergoing computed tomography (CT)-guided radiofrequency ablation (RFA). MATERIALS AND METHODS: Between September 2004 to March 2016, 668 neoplasms were treated in 476 medically inoperable patients (294 men, 60 women; median age 74 years; range 29-84) who underwent CT-guided RFA...
September 6, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28866441/cardiac-magnetic-resonance-evaluation-of-left-ventricular-myocardial-strain-in-pulmonary-hypertension
#5
Kimberly Kallianos, Gabriel C Brooks, Kanae Mukai, Florent Seguro de Carvalho, Jing Liu, David M Naeger, Teresa De Marco, Karen G Ordovas
RATIONALE AND OBJECTIVES: We investigated the feasibility of detecting left ventricular (LV) cardiac magnetic resonance (CMR) strain abnormalities using feature-tracking in patients with pulmonary hypertension (PH). MATERIALS AND METHODS: CMR was performed in 16 patients with all groups of PH and in 13 controls. Global and regional peak circumferential strains (%) (which have been shown to be robust by CMR), peak diastolic strain rate (%/s), and dyssynchrony index (ms) were quantified with feature-tracking software...
August 30, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28847640/increased-epicardial-fat-volume-is-independently-associated-with-the-presence-and-severity-of-systemic-sclerosis
#6
Benjamin D Long, Jadranka Stojanovska, Richard K J Brown, Anil K Attili, Eizabeth A Jackson, Vladimir Ognenovski
RATIONALE AND OBJECTIVES: The study aimed to determine if intrathoracic fat volumes are associated with the presence and severity of systemic sclerosis (SSc), defined by the presence of pulmonary arterial hypertension (PAH). MATERIALS AND METHODS: A total of 265 patients were included in the study, 202 of whom had SSc (134 had SSc with no PAH and 68 had SSc-associated PAH) and who underwent high-resolution computed tomography, and 63 controls who underwent coronary computed tomography angiography with calcium scoring...
August 25, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28844845/lepidic-predominant-pulmonary-lesions-lpl-ct-based-distinction-from-more-invasive-adenocarcinomas-using-3d-volumetric-density-and-first-order-ct-texture-analysis
#7
Jeffrey B Alpert, Henry Rusinek, Jane P Ko, Bari Dane, Harvey I Pass, Bernard K Crawford, Amy Rapkiewicz, David P Naidich
RATIONALE AND OBJECTIVES: This study aimed to differentiate pathologically defined lepidic predominant lesions (LPL) from more invasive adenocarcinomas (INV) using three-dimensional (3D) volumetric density and first-order texture histogram analysis of surgically excised stage 1 lung adenocarcinomas. MATERIALS AND METHODS: This retrospective study was institutional review board approved and Health Insurance Portability and Accountability Act compliant. Sixty-four cases of pathologically proven stage 1 lung adenocarcinoma surgically resected between September 2006 and October 2015, including LPL (n = 43) and INV (n = 21), were evaluated using high-resolution computed tomography...
August 24, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28844844/promoting-collaborations-between-radiologists-and-scientists
#8
REVIEW
John-Paul J Yu, Bradley M Spieler, Tiffany L Chan, Elizabeth M Johnson, Vikas Gulani, Kim L Sandler, Ponnada A Narayana, Winnie A Mar, James M Brian, Chin K Ng
Radiology as a discipline thrives on the dynamic interplay between technological and clinical advances. Progress in almost all facets of the imaging sciences is highly dependent on complex tools sourced from physics, engineering, biology, and the clinical sciences to obtain, process, and view imaging studies. The application of these tools, however, requires broad and deep medical knowledge about disease pathophysiology and its relationship with medical imaging. This relationship between clinical medicine and imaging technology, nurtured and fostered over the past 75 years, has cultivated extraordinarily rich collaborative opportunities between basic scientists, engineers, and physicians...
August 24, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28844843/the-sixth-stage-mastery
#9
Mohsin Mukhtar, Richard B Gunderman
No abstract text is available yet for this article.
August 24, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28844602/further-investigation-on-high-intensity-focused-ultrasound-hifu-treatment-for-thyroid-nodules-effectiveness-related-to-baseline-volumes
#10
Michael Sennert, Christian Happel, Yücel Korkusuz, Frank Grünwald, Björn Polenz, Daniel Gröner
RATIONALE AND OBJECTIVES: Several minimally invasive thermal techniques have been developed for the treatment of benign thyroid nodules. A new technique for this indication is high-intensity focused ultrasound (HIFU). The aim of this study was to assess effectiveness in varying preablative nodule volumes and whether outcome patterns that were reported during studies with other thermal ablative procedures for thyroid nodule ablation would also apply to HIFU. MATERIALS AND METHODS: Over the last 2 years, 19 nodules in 15 patients (12 women) whose average age was 58...
August 23, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28843465/coronary-artery-calcium-imaging-in-the-robinsca-trial-rationale-design-and-technical-background
#11
REVIEW
Marleen Vonder, Carlijn M van der Aalst, Rozemarijn Vliegenthart, Peter M A van Ooijen, Dirkjan Kuijpers, Jan Willem Gratama, Harry J de Koning, Matthijs Oudkerk
RATIONALE AND OBJECTIVES: To describe the rationale, design, and technical background of coronary artery calcium (CAC) imaging in the large-scale population-based cardiovascular disease screening trial (Risk Or Benefit IN Screening for CArdiovascular Diseases [ROBINSCA]). MATERIALS AND METHODS: First, literature search was performed to review the logistics, setup, and settings of previously performed CAC imaging studies, and current clinical CAC imaging protocols of participating centers in the ROBINSCA trial were evaluated...
August 23, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28843464/translating-new-imaging-technologies-to-clinical-practice
#12
REVIEW
Christoph I Lee, Supriya Gupta, Steven J Sherry, Allan Chiunda, Emilia Olson, Falgun H Chokshi, Lori Mankowski-Gettle, Mishal Mendiratta-Lala, Yueh Z Lee, Franklin G Moser, Richard Duszak
Radiology continues to benefit from constant innovation and technological advances. However, for promising new imaging technologies to reach widespread clinical practice, several milestones must be met. These include regulatory approval, early clinical evaluation, payer reimbursement, and broader marketplace adoption. Successful implementation of new imaging tests into clinical practice requires active stakeholder engagement and a focus on demonstrating clinical value during each phase of translation.
August 23, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28844603/t2-star-weighted-angiography-swan-allows-to-concomitantly-assess-the-prostate-contour-while-detecting-fiducials-before-mr-based-intensity-modulated-radiation-therapy-in-prostate-carcinoma
#13
Pierre-Antoine Dirajlal, Eva Jambon, Agnes Albat-Esquirou, Chloe Galmiche, Jean-Christophe Bernhard, Nicolas Grenier, Thibaud Haaser, François H Cornelis
PURPOSE: To evaluate the performance of T2 star-weighted angiography (SWAN) to concomitantly assess the prostate contour while detecting fiducials before magnetic resonance (MR)-based intensity-modulated radiation therapy (IMRT) in prostate carcinoma. MATERIALS AND METHODS: Forty patients (mean age: 73.1 ± 7.5 years; average Gleason score: 7 ± 1; average prostate-specific antigen: 14.7 ± 11.6 ng/mL) underwent MR and computed tomography imaging before fiducial-based IMRT...
August 22, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28844601/thoracic-quantitative-computed-tomography-qct-can-sensitively-monitor-bone-mineral-metabolism-comparison-of-thoracic-qct-vs-lumbar-qct-and-dual-energy-x-ray-absorptiometry-in-detection-of-age-relative-change-in-bone-mineral-density
#14
Song Shou Mao, Dong Li, Younus Saleem Syed, Yanlin Gao, Yanting Luo, Ferdinand Flores, Janis Child, MacKenzie Cervantes, Kamyar Kalantar-Zadeh, Matthew J Budoff
RATIONALE AND OBJECTIVE: Sensitive detection of bone mineral density (BMD) change is a key issue to monitor and evaluate the individual bone health status, as well as bone metabolism and bone mineral status. The ability to use thoracic quantitative computed tomography (QCT) to detect the annual change of BMD remains unclear. We aimed to investigate the sensitivity in detecting age-related bone mineral loss using the thoracic QCT from the electrocardiographically gated heart scans in comparison to whole-body dual-energy X-ray absorptiometry (DXA) and standard lumbar QCT...
August 22, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28826614/diagnostic-performance-of-ultrasonography-for-pediatric-appendicitis-a-night-and-day-difference
#15
Kate Louise M Mangona, R Paul Guillerman, Victor S Mangona, Jennifer Carpenter, Wei Zhang, Monica Lopez, Robert C Orth
RATIONALE AND OBJECTIVES: For imaging pediatric appendicitis, ultrasonography (US) is preferred because of its lack of ionizing radiation, but is limited by operator dependence. This study investigates the US diagnostic performance during night shifts covered by radiology trainees compared to day shifts covered by attending radiologists. MATERIALS AND METHODS: Appy-Scores (1 = completely visualized normal appendix; 2 = partially visualized normal appendix; 3 = nonvisualized appendix with no inflammatory changes in the expected region of the appendix; 4 = equivocal; 5a = nonperforated appendicitis; 5b = perforated appendicitis) from 2935 US examinations (2161:774, day-to-night) from July 2013 to 2014 were correlated with the intraoperative diagnoses and the clinical follow-up...
August 18, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28826613/should-we-teach-radiology-to-undergraduates
#16
David Alvarez, Richard B Gunderman
No abstract text is available yet for this article.
August 18, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28807589/differences-in-texture-analysis-parameters-between-active-alveolitis-and-lung-fibrosis-in-chest-ct-of-patients-with-systemic-sclerosis-a-feasibility-study
#17
Christopher Kloth, Anya C Blum, Wolfgang M Thaiss, Heike Preibsch, Hendrik Ditt, Rainer Grimmer, Jan Fritz, Konstantin Nikolaou, Hans Bösmüller, Marius Horger
RATIONALE AND OBJECTIVES: This study aimed to determine the diagnostic aid of computed tomography (CT) features for the differentiation of active alveolitis and fibrosis using a CT texture analysis (CTTA) prototype and CT densitometry in patients with systemic sclerosis (SSc) using ancillary high-resolution computed tomography (HRCT) features and their longitudinal course as standard of reference. MATERIALS AND METHODS: We retrospectively analyzed thin-slice noncontrast chest CT image data of 43 patients with SSc (18 men, mean age 51...
August 11, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28800952/the-best-single-measurement-for-assessing-splenomegaly-in-patients-with-cirrhotic-liver-morphology
#18
Zachary Nuffer, Thomas Marini, Andrey Rupasov, Stephen Kwak, Shweta Bhatt
RATIONALE AND OBJECTIVES: There is little agreement within the radiology literature as to the best single measurement for assessing splenomegaly. In this study, we evaluate the correlation of multiple unidirectional measurements of the spleen with splenic volume in patients with cirrhotic liver morphology on computed tomography (CT). MATERIALS AND METHODS: Splenic volume was retrospectively calculated from CT examinations of 179 adult patients, 47 of whom were approved as renal donors, and 132 of whom were referred for various other indications, and were found to have cirrhotic liver morphology on CT...
August 8, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28800951/evaluation-of-a-high-concentrated-contrast-media-injection-protocol-in-combination-with-low-tube-current-for-dose-reduction-in-coronary-computed-tomography-angiography-a-randomized-two-center-prospective-study
#19
Yibo Sun, Yanqing Hua, Mingpeng Wang, Dingbiao Mao, Xiu Jin, Cheng Li, Kailei Shi, Jianrong Xu
RATIONALE AND OBJECTIVES: The study aimed to prospectively evaluate the radiation dose reduction potential and image quality (IQ) of a high-concentration contrast media (HCCM) injection protocol in combination with a low tube current (mAs) in coronary computed tomography angiography. MATERIALS AND METHODS: Eighty-one consecutive patients (mean age: 62 years; 34 females; body mass index: 18-31) were included and randomized-assigned into two groups. All computed tomography (CT) examinations were performed in two groups with the same tube voltage (100 kV), flow rate of contrast medium (5...
August 8, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28800950/added-value-of-bone-subtraction-in-dual-energy-digital-radiography-in-the-detection-of-pneumothorax-impact-of-reader-expertise-and-medical-specialty
#20
Ayla Urbaneja, Gauthier Dodin, Gabriela Hossu, Omar Bakour, Rachid Kechidi, Pedro Gondim Teixeira, Alain Blum
RATIONALE AND OBJECTIVES: This study aimed to determine the value of dual-energy thoracic radiography in the diagnosis of pneumothorax considering the reader's experience. MATERIALS AND METHODS: Forty patients with a suspected pneumothorax, imaged with dual-energy chest radiographs, were divided into two groups: those with pneumothorax as the final diagnosis (n = 19) and those without (n = 21). The images were analyzed by 36 readers (5 interns, 16 residents, 15 senior physicians) for the presence or absence of pneumothorax during three readout sessions at 2-week intervals: standard images alone (session 1), dual-energy images with bone subtraction alone (session 2), and a combination of the two (session 3)...
August 8, 2017: Academic Radiology
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