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AJR. American Journal of Roentgenology

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https://www.readbyqxmd.com/read/29446684/acute-nonhemorrhagic-adrenal-infarction-in-pregnancy-10-year-mri-incidence-and-patient-outcomes-at-a-single-institution
#1
Shahar A Glomski, Jeffrey P Guenette, Wendy Landman, Servet Tatli
OBJECTIVE: The purpose of this study was to retrospectively investigate the MRI incidence of nonhemorrhagic adrenal infarction in pregnant women undergoing MRI evaluation of acute abdominal or flank pain, assess the MRI features quantitatively, and report patient outcomes. MATERIALS AND METHODS: All abdominal MRI examinations of pregnant women with acute pain at one institution from May 2005 to April 2015 were reviewed. The adrenals were evaluated for abnormal morphologic and signal intensity characteristics described in the literature characterizing nonhemorrhagic adrenal infarction and were compared with the contralateral adrenal by paired t tests...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446683/three-dimensional-radial-vibe-sequence-for-contrast-enhanced-brain-imaging-an-alternative-for-reducing-motion-artifacts-in-restless-children
#2
Ji Eun Park, Young Hun Choi, Jung-Eun Cheon, Woo Sun Kim, In-One Kim, Young Jin Ryu, MunYoung Paek
OBJECTIVE: The purpose of this study was to evaluate the usefulness of radially sampled 3D fat-suppressed T1-weighted gradient-echo sequences (radial volumetric interpolated breath-hold examination [radial VIBE]) for contrast-enhanced brain MRI of children through comparison with a magnetization-prepared rapid-acquisition gradient-echo (MP-RAGE) sequence. MATERIALS AND METHODS: Sixty-five consecutive contrast-enhanced brain MRI examinations performed with axial MP-RAGE and radial VIBE sequences were included...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446682/fetal-urinary-tract-anomalies-review-of-pathophysiology-imaging-and-management
#3
Achille Mileto, Malak Itani, Douglas S Katz, Joseph R Siebert, Manjiri K Dighe, Theodore J Dubinsky, Mariam Moshiri
OBJECTIVE: Common fetal anomalies of the kidneys and urinary tract encompass a complex spectrum of abnormalities that can be detected prenatally by ultrasound. Common fetal anomalies of the kidneys and urinary tract can affect amniotic fluid volume production with the development of oligohydramnios or anhydramnios, resulting in fetal pulmonary hypoplasia and, potentially, abnormal development of other fetal structures. CONCLUSION: We provide an overview of common fetal anomalies of the kidneys and urinary tract with an emphasis on sonographic patterns as well as pathologic and postnatal correlation, along with brief recommendations for postnatal management...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446681/coronary-ct-angiography-use-in-patients-with-chest-pain-presenting-to-emergency-departments
#4
David C Levin, Laurence Parker, Ethan J Halpern, Vijay M Rao
OBJECTIVE: Previously published reports have shown that coronary CT angiography (CCTA) is a more efficient method of diagnosis than myocardial perfusion imaging (MPI) and stress echocardiography for patients presenting to emergency departments (EDs) with acute chest pain. In light of this evidence, the objective of this study was to examine recent trends in the use of these techniques in EDs. MATERIALS AND METHODS: The nationwide Medicare Part B databases for 2006-2015 were the data source...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446680/initial-clinical-experience-with-an-inducible-magnetic-seed-system-for-preoperative-breast-lesion-localization
#5
Elissa R Price, Amal L Khoury, Laura J Esserman, Bonnie N Joe, Michael D Alvarado
OBJECTIVE: The purpose of this study is to evaluate a nonradioactive inducible magnetic seed system (Magseed, Endomag) for preoperative localization of nonpalpable breast lesions. CONCLUSION: All of the 73 seeds placed in the first 4 months of clinical use were successfully placed and all were successfully retrieved intraoperatively. The mean time from seed placement to surgery was 3 days. Early clinical experience suggests that Magseed is an effective and accurate means of preoperative breast lesion localization...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446679/video-technique-to-restrict-the-gore-viatorr-stent-graft-for-tips-reduction
#6
Yindee Geeratikun, Hans Timmermans, Barry Uchida, Younes Jahangiri, Masahiro Horikawa, John A Kaufman, Khashayar Farsad
OBJECTIVE: The Viatorr stent-graft (W. L. Gore and Associates), specifically made for transjugular intrahepatic portosystemic shunt (TIPS) creation, has significantly improved TIPS patency compared with bare metal stents. Post-TIPS hepatic encephalopathy (HE), however, remains relatively common after TIPS creation. We describe a technique to secondarily restrict a Viatorr stent-graft to treat post-TIPS refractory HE and maintain use of the Viatorr device. CONCLUSION: We show a simple technique to modify the Viatorr stent-graft for TIPS reduction...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446678/interrater-agreement-and-diagnostic-accuracy-of-a-novel-computer-aided-detection-process-for-the-detection-and-prevention-of-retained-surgical-instruments
#7
Theodore C Marentis, Matthew S Davenport, Jonathan R Dillman, Ramon Sanchez, Aine M Kelly, Paul Cronin, Mariana R DeFreitas, Lubomir Hadjiiski, Heang-Ping Chan
OBJECTIVE: The purpose of this study is to evaluate the diagnostic accuracy of a process incorporating computer-aided detection (CAD) for the detection and prevention of retained surgical instruments using a novel nondeformable radiopaque μTag. MATERIALS AND METHODS: A high-specificity CAD system was developed iteratively from a training set (n = 540 radiographs) and a validation set (n = 560 radiographs). A novel test set composed of 700 thoracoabdominal radiographs (410 with a randomly placed μTag and 290 without a μTag) was obtained from 10 cadavers embedded with confounding iatrogenic objects...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446677/how-to-integrate-cell-free-dna-screening-with-sonographic-markers-for-aneuploidy-an-update
#8
Thomas C Winter, Nancy C Rose
OBJECTIVE: The sonologist detects a so-called "soft marker" during approximately 10% of routine second-trimester anatomy examinations and is often uncertain about what further management is appropriate. This article will specifically address the management of patients with sonographic markers for six common entities: choroid plexus cysts (CPCs), ventriculomegaly (VM), echogenic intracardiac focus (EIF), urinary tract dilation (UTD), fetal echogenic bowel (FEB), and femoral and humeral shortening...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446676/advanced-dwi-methods-for-the-assessment-of-ischemic-stroke
#9
Jens H Jensen
OBJECTIVE: This commentary discusses recent preclinical research on the potential feasibility and benefits of applying advanced DWI methods for the assessment of acute stroke. CONCLUSION: A DWI parameter known as kurtosis shows promise in helping to identify tissue that is likely salvageable at reperfusion.
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446675/colorectal-liver-metastasis-overview-of-treatment-paradigm-highlighting-the-role-of-ablation
#10
Shree R Venkat, Prasoon P Mohan, Ripal T Gandhi
OBJECTIVE: The objective of this article is to discuss the current treatment options for colorectal cancer (CRC) liver metastases and the role of ablation. CONCLUSION: A randomized control trial of ablation combined with chemotherapy showed improved overall survival compared with chemotherapy alone. Local recurrence rates are comparable to those associated with resection when ablative margins of more than 5 mm are achieved and target lesions are smaller than 3 cm...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446674/intravoxel-incoherent-motion-mri-of-rectal-cancer-correlation-of-diffusion-and-perfusion-characteristics-with-prognostic-tumor-markers
#11
Hongliang Sun, Yanyan Xu, Aiping Song, Kaining Shi, Wu Wang
OBJECTIVE: The objective of our study was to evaluate the intravoxel incoherent motion (IVIM)-DWI derived parameters and their relationships with tumor prognostic markers using 3-T MRI in patients with rectal cancer. SUBJECTS AND METHODS: Fifty-two patients with histopathologically proven rectal cancer who underwent preoperative pelvic MRI were prospectively enrolled in this study. Diffusion and perfusion parameters including the apparent diffusion coefficient (ADC), pure diffusion coefficient, perfusion fraction, and pseudodiffusion coefficient derived from IVIMDWI were independently measured by two radiologists...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446673/a-systematic-review-of-fatigue-in-radiology-is-it-a-problem
#12
Nadia Stec, Danielle Arje, Alan R Moody, Elizabeth A Krupinski, Pascal N Tyrrell
OBJECTIVE: The purpose of this study was to review current literature regarding radiologist fatigue. MATERIALS AND METHODS: A literature search was performed using PubMed. Key words and Medical Subject Heading terms were used to generate refined queries with inclusion and exclusion criteria, focusing on fatigue and error. Results were selected according to these criteria: examined radiologist fatigue and radiologic error stemming from fatigue; experimental results measured as accuracy, error, or performance; and peer-reviewed publication...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446672/choledochal-malformations-surgical-implications-of-radiologic-findings
#13
James S Banks, Gaurav Saigal, Joseph M D'Alonzo, Maria D'Almeida Bastos, Nguyen V Nguyen
OBJECTIVE: The purpose of this article is to review the relevant pathophysiologic features, appearances, and surgical implications of choledochal malformations. CONCLUSION: Choledochal malformations, colloquially called choledochal cysts, initially described in 1723, have been recategorized multiple times, the most widely accepted being the Todani classification based on morphologic features and location. Although readily applied to imaging findings, this classification system does not correlate well with clinical and surgical management...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446671/unenhanced-mri-as-an-alternative-to-99m-tc-labeled-dimercaptosuccinic-acid-scintigraphy-in-the-detection-of-pediatric-renal-scarring
#14
Colbey W Freeman, Talissa A Altes, Patrice K Rehm, Eduard E de Lange, Luke Lancaster, John P Mugler, James T Patrie, Sean Corbett, Carlos Leiva-Salinas, Lucia Flors
OBJECTIVE: The purpose of this study was to determine whether unenhanced MRI without sedation is a feasible substitute for dimercaptosuccinic acid (DMSA) scintigraphy in the detection of renal scars in pediatric patients. SUBJECTS AND METHODS: Patients scheduled for 99mTc-labeled DMSA scintigraphy for assessment of possible renal scars were recruited to undergo unenhanced MRI (free-breathing fat-suppressed T2-weighted single-shot turbo spin-echo and T1-weighted gradient-echo imaging, 13 minutes' total imaging time)...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446670/diagnostic-performance-of-margin-features-in-thyroid-nodules-in-prediction-of-malignancy
#15
Sean M Siebert, Adam J Gomez, Tie Liang, Ali M Tahvildari, Terry S Desser, R Brooke Jeffrey, Aya Kamaya
OBJECTIVE: The purpose of this study was to evaluate thyroid nodule margins for specific morphologic features and determine the diagnostic performance of these features in differentiating papillary carcinoma from benign thyroid nodules. MATERIALS AND METHODS: Nodules measuring 1-3 cm in largest diameter that had been evaluated with high-resolution ultrasound (12-18 MHz) and ultrasound-guided biopsy with definitive pathologic diagnosis were analyzed. Three blinded board-certified readers evaluated high-resolution images of each nodule for jagged edges, lobulated borders, and curved borders along their margins...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446669/segmental-arterial-mediolysis-abdominal-imaging-of-and-disease-course-in-111-patients
#16
Sailen G Naidu, Christine O Menias, Rahmi Oklu, Robert S Hines, Kinan Alhalabi, Gerges Makar, Fadi E Shamoun, Stanislav Henkin, Robert D McBane
OBJECTIVE: The purpose of this study is to identify the imaging characteristics of segmental arterial mediolysis (SAM) at presentation and establish the longitudinal course of disease. MATERIALS AND METHODS: We retrospectively identified patients with SAM at a single institution from 2000 through 2015. Diagnosis was based on published guidelines with multidisciplinary consensus. Imaging studies obtained at initial evaluation were reviewed to evaluate imaging findings and vascular territory distribution...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446668/improved-opacification-of-a-suboptimally-enhanced-pulmonary-artery-in-chest-ct-experience-using-a-dual-layer-detector-spectral-ct
#17
Kyungsoo Bae, Kyung Nyeo Jeon, Soo Buem Cho, Sung Eun Park, Jin Il Moon, Hye Jin Baek, Bo Hwa Choi
OBJECTIVE: The objective of our study was to evaluate the quality of virtual monoenergetic imaging (VMI) from dual-layer detector spectral CT and the effect of virtual monoenergetic images obtained at low energies on the detection of pulmonary embolism (PE) in patients with a suboptimally enhanced pulmonary artery on chest CT. MATERIALS AND METHODS: Of 1552 consecutive chest CT examinations performed with dual-layer detector spectral CT using a routine protocol with a tube voltage of 120 kVp, 79 examinations with suboptimal enhancement of the pulmonary artery (i...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29446667/safety-of-administering-furosemide-during-nuclear-diuretic-renography-in-patients-with-sulfonamide-allergies
#18
Yingbing Wang, David Z Chow, Leonard P Connolly, James A Scott, Edwin L Palmer
OBJECTIVE: We reviewed the safety of nuclear diuretic renography with furosemide in patients with sulfonamide allergies. The electronic health record was used to uncover any drug effects reported within 30 days of diuretic renograms performed between January 2009 and December 2015. CONCLUSION: Eighty-three of 1103 (7.5%) diuretic renograms were performed on patients with sulfonamide allergies. Two instances of minor rash occurred. No serious reactions occurred. Furosemide is associated with an extremely low risk of minor reactions in patients with sulfonamide allergies...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29412020/phyllodes-tumor-of-the-breast-ultrasound-pathology-correlation
#19
Megan Kalambo, Beatriz E Adrada, Modupe M Adeyefa, Savitri Krishnamurthy, Ken Hess, Selin Carkaci, Gary J Whitman
OBJECTIVE: The purpose of this study is to evaluate the sonographic and histopathologic features distinguishing benign from borderline and malignant phyllodes tumors. MATERIALS AND METHODS: The ultrasound examinations of women with pathologically proven phyllodes tumors from 2004 to 2011 were retrospectively reviewed. The sonographic features of benign, borderline, and malignant phyllodes tumors were compared and analyzed using the American College of Radiology's BI-RADS ultrasound lexicon...
February 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29412019/improving-performance-of-mammographic-breast-positioning-in-an-academic-radiology-practice
#20
Sunita Pal, Debra M Ikeda, Robert A Jesinger, L Jake Mickelsen, Christina A Chen, David B Larson
OBJECTIVE: The purpose of this project was to achieve sustained improvement in mammographic breast positioning in our department. MATERIALS AND METHODS: Between June 2013 and December 2016, we conducted a team-based performance improvement initiative with the goal of improving mammographic positioning. The team of technologists and radiologists established quantitative measures of positioning performance based on American College of Radiology (ACR) criteria, audited at least 35 mammograms per week for positioning quality, displayed performance in dashboards, provided technologists with positioning training, developed a supportive environment fostering technologist and radiologist communication surrounding mammographic positioning, and employed a mammography positioning coach to develop, improve, and maintain technologist positioning performance...
February 7, 2018: AJR. American Journal of Roentgenology
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