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Radiology

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https://read.qxmd.com/read/30777809/high-spatial-resolution-diffusion-mri-in-parkinson-disease-lateral-asymmetry-of-the-substantia-nigra
#1
Zheng Zhong, Douglas Merkitch, M Muge Karaman, Jiaxuan Zhang, Yi Sui, Jennifer G Goldman, Xiaohong Joe Zhou
Background Motor symptoms in Parkinson disease (PD) have exhibited lateral asymmetry, suggesting asymmetric neuronal loss in the substantia nigra (SN). Diffusion MRI with diffusion imaging may be able to help confirm tissue microstructural alterations in the substantia nigra to probe for the presence of asymmetry. Purpose To investigate lateral asymmetry in the SN of patients with PD by using diffusion MRI with both Gaussian and non-Gaussian models. Materials and Methods In this cross-sectional study conducted from March 2015 to March 2017, 27 participants with PD and 27 age-matched healthy control (HC) participants, all right handed, underwent MRI at 3...
February 19, 2019: Radiology
https://read.qxmd.com/read/30777808/digital-mammography-versus-digital-mammography-plus-tomosynthesis-in-breast-cancer-screening-the-oslo-tomosynthesis-screening-trial
#2
Per Skaane, Andriy I Bandos, Loren T Niklason, Sofie Sebuødegård, Bjørn H Østerås, Randi Gullien, David Gur, Solveig Hofvind
Background Digital breast tomosynthesis (DBT) is replacing digital mammography (DM) in the clinical workflow. Currently, there are limited prospective studies comparing the diagnostic accuracy of both examinations and the role of synthetic mammography (SM) and computer-aided detection (CAD). Purpose To compare the accuracy of DM versus DM + DBT in population-based breast cancer screening. Materials and Methods This prospective study, performed from November 2010 to December 2012, included 24 301 women (mean age, 59...
February 19, 2019: Radiology
https://read.qxmd.com/read/30777807/mr-angiography-screening-and-surveillance-for-intracranial-aneurysms-in-autosomal-dominant-polycystic-kidney-disease-a-cost-effectiveness-analysis
#3
Ajay Malhotra, Xiao Wu, Charles C Matouk, Howard P Forman, Dheeraj Gandhi, Pina Sanelli
Background Autosomal dominant polycystic kidney disease (ADPKD) affects one in 400 to one in 1000 individuals; 10%-11% of these individuals have intracranial aneurysms. The frequency and patterns of screening for intracranial aneurysms have not been defined. Purpose To evaluate different MR angiography screening and surveillance strategies for unruptured intracranial aneurysms in patients with ADPKD. Materials and Methods A Markov decision-analytic model was constructed accounting for both costs and outcomes from a societal perspective...
February 19, 2019: Radiology
https://read.qxmd.com/read/30777806/airway-microstructure-in-idiopathic-pulmonary-fibrosis-assessment-at-hyperpolarized-3-he-diffusion-weighted-mri
#4
Ho-Fung Chan, Nicholas D Weatherley, Christopher S Johns, Neil J Stewart, Guilhem J Collier, Stephen M Bianchi, Jim M Wild
Background MRI with inhaled hyperpolarized helium 3 (3 He) allows for functional and structural imaging of the lungs. Hyperpolarized gas diffusion-weighted (DW) MRI provides noninvasive and quantitative assessment of microstructural acinar changes in the lungs. Purpose To investigate whether microstructural imaging metrics from in-vivo hyperpolarized 3 He DW MRI are sensitive to longitudinal changes in a cohort of participants with idiopathic pulmonary fibrosis (IPF) and to evaluate the reproducibility of these metrics and their correlation with existing clinical measures of IPF disease severity...
February 19, 2019: Radiology
https://read.qxmd.com/read/30777805/diagnostic-performance-of-practice-guidelines-for-thyroid-nodules-thyroid-nodule-size-versus-biopsy-rates
#5
Su Min Ha, Jung Hwan Baek, Dong Gyu Na, Chong Hyun Suh, Sae Rom Chung, Young Jun Choi, Jeong Hyun Lee
Background The diagnostic performance and unnecessary biopsy rates for evaluation of thyroid nodules varies among the current society guidelines. We hypothesized that diagnostic performance and unnecessary biopsy rates of different guidelines are largely determined by different thyroid size thresholds used as cutoff values that determine when to biopsy a thyroid nodule. Purpose To compare the malignancy risk, diagnostic performance, and unnecessary biopsy rates of three guidelines and evaluate the changes according to the nodule size cutoff for biopsy...
February 19, 2019: Radiology
https://read.qxmd.com/read/30777798/the-cracking-thyroid
#6
Luis Fernando Serrano, Sergio Valencia
No abstract text is available yet for this article.
February 19, 2019: Radiology
https://read.qxmd.com/read/30776249/is-it-appropriate-to-place-subcutaneous-chest-ports-in-patients-with-neutropenia
#7
COMMENT
Evan J Johnson
No abstract text is available yet for this article.
February 12, 2019: Radiology
https://read.qxmd.com/read/30776248/mri-for-first-line-evaluation-of-children-suspected-of-having-acute-appendicitis
#8
COMMENT
Jonathan R Dillman, Andrew T Trout
No abstract text is available yet for this article.
February 12, 2019: Radiology
https://read.qxmd.com/read/30775949/the-potential-of-photoacoustic-techniques-for-molecular-imaging
#9
COMMENT
Reuben S Mezrich
No abstract text is available yet for this article.
February 12, 2019: Radiology
https://read.qxmd.com/read/30747596/association-between-periprocedural-neutropenia-and-early-infection-related-chest-port-removal
#10
Andrew W Perez, Jennifer M Watchmaker, Daniel B Brown, Filip Banovac
Background Patients who require long-term central venous access can present for port placement with depressed immune function as a result of their treatment or disease process. At present, there is no consensus regarding whether neutropenia at the time of port placement confers a higher risk for early infection-related port removal. Purpose To compare the incidence of early infection-related chest port removal in adults when placed in neutropenic versus nonneutropenic patient groups. Materials and Methods This retrospective cohort study examined 2580 port placements in 1081 men (41...
February 12, 2019: Radiology
https://read.qxmd.com/read/30747595/first-line-diagnostic-evaluation-with-mri-of-children-suspected-of-having-acute-appendicitis
#11
Raza Mushtaq, Sarah M Desoky, Frank Morello, Dorothy Gilbertson-Dahdal, Geetha Gopalakrishnan, Aaron Leetch, Srinivasan Vedantham, Bobby Kalb, Diego R Martin, Unni K Udayasankar
Background Advances in abdominal MRI have enabled rapid, free-breathing imaging without the need for intravenous or oral contrast material. The use of MRI as the primary imaging modality for suspected appendicitis has not been previously studied. Purpose To determine the diagnostic performance of MRI as the initial imaging modality in children suspected of having acute appendicitis. Materials and Methods The study included consecutive patients 18 years of age and younger presenting with acute abdominal pain at a tertiary care institution from January 2013 through June 2016 who subsequently underwent an unenhanced MRI examination as the primary diagnostic imaging modality...
February 12, 2019: Radiology
https://read.qxmd.com/read/30747594/can-the-injection-of-adjuvant-gels-accelerate-heating-for-more-robust-thermal-ablation-of-tumors
#12
COMMENT
S Nahum Goldberg
No abstract text is available yet for this article.
February 12, 2019: Radiology
https://read.qxmd.com/read/30747593/mammographic-parenchymal-analysis-can-we-do-better-with-digital-assistance
#13
COMMENT
Kitt Shaffer
No abstract text is available yet for this article.
February 12, 2019: Radiology
https://read.qxmd.com/read/30747592/real-time-volumetric-assessment-of-the-human-carotid-artery-handheld-multispectral-optoacoustic-tomography
#14
Ivana Ivankovic, Elena Merčep, Claus-Georg Schmedt, Xose Luís Deán-Ben, Daniel Razansky
Background Multispectral optical imaging has the capability of resolving hemoglobin, lipid, and water. Volumetric multispectral optoacoustic tomography (MSOT) is a hybrid imaging technique that provides a unique combination of functional and molecular contrast with real-time handheld imaging. Purpose To investigate whether volumetric MSOT can provide real-time assessment of the anatomic and functional status of the human carotid artery bifurcation noninvasively. Materials and Methods Imaging of healthy volunteers (n = 16) was performed with a custom-designed handheld volumetric MSOT scanner capable of high-spatial-resolution (approximately 200 µm) and real-time (10 volumes/sec) three-dimensional imaging, while further providing spectroscopic capacity through fast tuning of the excitation light wavelength...
February 12, 2019: Radiology
https://read.qxmd.com/read/30747591/digital-mammography-in-breast-cancer-additive-value-of-radiomics-of-breast-parenchyma
#15
Hui Li, Kayla R Mendel, Li Lan, Deepa Sheth, Maryellen L Giger
Background Previous studies have suggested that breast parenchymal texture features may reflect the biologic risk factors associated with breast cancer development. Therefore, combining the characteristics of normal parenchyma from the contralateral breast with radiomic features of breast tumors may improve the accuracy of digital mammography in the diagnosis of breast cancer. Purpose To determine whether the addition of radiomic analysis of contralateral breast parenchyma to the characterization of breast lesions with digital mammography improves lesion classification over that with radiomic tumor features alone...
February 12, 2019: Radiology
https://read.qxmd.com/read/30747590/effects-of-a-thermal-accelerant-gel-on-microwave-ablation-zone-volumes-in-lung-a-porcine-study
#16
Aaron W P Maxwell, William K C Park, Grayson L Baird, Douglas W Martin, Kara A Lombardo, Damian E Dupuy
Background Thermal ablation of cancers may be associated with high rates of local tumor progression. A thermal accelerant gel has been developed to improve the transmission of microwave energy in biologic tissues with the aim of enlarging the thermal ablation zone. Purpose To determine the effects of a thermal accelerant gel on microwave ablation zone volumes in porcine lung and to compare percutaneous and endobronchial delivery methods. Materials and Methods Thirty-two consecutive microwave lung ablations were performed in nine 12-week-old domestic male swine under general anesthesia by using fluoroscopic guidance between September 2017 and April 2018...
February 12, 2019: Radiology
https://read.qxmd.com/read/30735471/the-role-of-radiology-in-intimate-partner-violence
#17
COMMENT
Efrén J Flores, Anand K Narayan
No abstract text is available yet for this article.
February 5, 2019: Radiology
https://read.qxmd.com/read/30735464/which-is-better-for-characterizing-disease-activity-in-axial-spondyloarthritis-diffusion-mri-or-t2-weighted-stir-mri
#18
COMMENT
Ali Guermazi, Frank W Roemer
No abstract text is available yet for this article.
February 5, 2019: Radiology
https://read.qxmd.com/read/30735090/pediatric-ct-in-adult-facilities-banging-the-drum-for-radiation-dose-management
#19
COMMENT
Peter J Strouse
No abstract text is available yet for this article.
February 5, 2019: Radiology
https://read.qxmd.com/read/30720408/top-publications-in-radiology-2018
#20
David A Bluemke
No abstract text is available yet for this article.
February 5, 2019: Radiology
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