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Radiographics: a Review Publication of the Radiological Society of North America, Inc

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https://www.readbyqxmd.com/read/27885894/mr-enterography-of-inflammatory-bowel-disease-with-endoscopic-correlation
#1
Pankaj Kaushal, Alexander S Somwaru, Aline Charabaty, Angela D Levy
Crohn disease (CD) and ulcerative colitis (UC) are the two main forms of idiopathic inflammatory bowel disease (IBD). CD is a transmural chronic inflammatory disorder that can affect any part of the gastrointestinal tract in a discontinuous distribution. UC is a mucosal and submucosal chronic inflammatory disease that typically originates in the rectum and may extend proximally in a continuous manner. In treating patients with CD and UC, clinicians rely heavily on accurate diagnoses and disease staging. Magnetic resonance (MR) enterography used in conjunction with endoscopy and histopathologic analysis can help accurately diagnose and manage disease in the majority of patients...
November 25, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27885893/tumor-vessel-relationships-in-pancreatic-ductal-adenocarcinoma-at-multidetector-ct-different-classification-systems-and-their-influence-on-treatment-planning
#2
Ahmed M Zaky, Christopher L Wolfgang, Matthew J Weiss, Ammar A Javed, Elliot K Fishman, Atif Zaheer
Treatment of pancreatic ductal adenocarcinoma (PDAC) remains a challenge, given its propensity for early systemic spread and growth into the adjacent vital vascular structures. With the advent of newer surgical techniques and chemoradiation therapies, multidetector computed tomography (CT) plays a crucial role in the identification of patients with borderline resectable disease who may benefit from such treatments. Stage III PDAC is divided into two categories-locally advanced, defined by arterial encasement or nonreconstructible portovenous axis involvement; and borderline resectable, defined by limited arterial involvement and/or reconstructible portovenous involvement...
November 25, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27885892/invited-commentary-on-mr-enterography-of-inflammatory-bowel-disease-with-endoscopic-correlation
#3
Jeff L Fidler
No abstract text is available yet for this article.
November 21, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27860551/congenital-variants-and-anomalies-of-the-aortic-arch
#4
Kate Hanneman, Beverley Newman, Frandics Chan
Congenital variants and anomalies of the aortic arch are important to recognize as they may be associated with vascular rings, congenital heart disease, and chromosomal abnormalities, and can have important implications for prognosis and management. The purpose of this article is to review cross-sectional imaging techniques used in the evaluation of the aortic arch, describe the embryology and anatomy of the aortic arch system, discuss aortic arch variants and anomalies, and review other malformations of the aortic arch, including interrupted aortic arch, hypoplastic aortic arch, and aortic coarctation...
November 18, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27860550/contrast-enhanced-us-guided-interventions-improving-success-rate-and-avoiding-complications-using-us-contrast-agents
#5
Dean Y Huang, Gibran T Yusuf, Mohammad Daneshi, Mohammad Ali Husainy, Raymond Ramnarine, Maria E K Sellars, Paul S Sidhu
Ultrasonography (US) is an established modality for intervention. The introduction of microbubble US contrast agents (UCAs) has the potential to further improve US imaging for intervention. According to licensing, UCAs are currently approved for clinical use in restricted situations, but many additional indications have become accepted as having clinical value. The use of UCAs has been shown to be safe, and there is no risk of renal toxic effects, unlike with iodinated or gadolinium contrast medium. Broadly speaking, UCAs can be injected into the bloodstream (intravascular use) or instilled into almost any accessible body cavity (endocavitary use), either in isolation or synchronously...
November 18, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27768543/artifacts-at-cardiac-ct-physics-and-solutions
#6
Kevin Kalisz, Ji Buethe, Sachin S Saboo, Suhny Abbara, Sandra Halliburton, Prabhakar Rajiah
Computed tomography is vulnerable to a wide variety of artifacts, including patient- and technique-specific artifacts, some of which are unique to imaging of the heart. Motion is the most common source of artifacts and can be caused by patient, cardiac, or respiratory motion. Cardiac motion artifacts can be reduced by decreasing the heart rate and variability and the duration of data acquisition; adjusting the placement of the data window within a cardiac cycle; performing single-heartbeat scanning; and using multisegment reconstruction, motion-correction algorithms, and electrocardiographic editing...
October 21, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27768542/why-thyroid-surgeons-are-frustrated-with-radiologists-lessons-learned-from-pre-and-postoperative-us
#7
Sachin S Kumbhar, Ryan B O'Malley, Tracy J Robinson, Suresh Maximin, Neeraj Lalwani, David R Byrd, Carolyn L Wang
Optimal treatment of thyroid cancer is highly dependent on accurate staging of the extent of disease at presentation. Preoperative ultrasonography (US) is the most sensitive method for detecting metastatic lymph nodes and is recommended as part of the standard preoperative workup. Missed findings on preoperative scans may lead to understaging and inadequate surgical management, which subsequently predispose these patients to residual disease postoperatively and a higher risk for recurrence, possibly requiring repeat surgery...
October 21, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27740898/benign-hepatocellular-nodules-hepatobiliary-phase-of-gadoxetic-acid-enhanced-mr-imaging-based-on-molecular-background
#8
Norihide Yoneda, Osamu Matsui, Azusa Kitao, Kazuto Kozaka, Satoshi Kobayashi, Motoko Sasaki, Kotaro Yoshida, Dai Inoue, Tetsuya Minami, Toshifumi Gabata
Gadoxetic acid is a contrast agent for magnetic resonance (MR) imaging with hepatocyte-specific properties and is becoming increasingly important in detection and characterization of hepatocellular carcinoma and benign hepatocellular nodules, including focal nodular hyperplasia (FNH), nodular regenerative hyperplasia (NRH), hepatocellular adenoma (HCA), and dysplastic nodule. In these hepatocellular nodules, a positive correlation between the grade of membranous uptake transporter organic anion-transporting polypeptide (OATP) 1B3 expression and signal intensity in the hepatobiliary (HB) phase has been verified...
October 14, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27740897/septal-atrioventricular-junction-region-comprehensive-imaging-in-adults
#9
Farhood Saremi, Cameron Hassani, Damián Sánchez-Quintana
The septal atrioventricular junction is a centrally located region of the heart where the septal components of the atria and ventricles meet the aortic, mitral, and tricuspid valves. Important structures in this region include the membranous septum, the central fibrous body, the Koch triangle, the inferior pyramidal space, and the base of the interventricular septum. This small area is the home of the atrioventricular node and the atrioventricular conduction axis and has enormous importance to electrophysiologists owing to its prime role in the conduction system of the heart...
October 14, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27715712/us-of-the-inguinal-canal-comprehensive-review-of-pathologic-processes-with-ct-and-mr-imaging-correlation
#10
Margarita V Revzin, Devrim Ersahin, Gary M Israel, Jonathan D Kirsch, Mahan Mathur, Jamal Bokhari, Leslie M Scoutt
Ultrasonography (US) has a fundamental role in the initial examination of patients who present with symptoms indicating abnormalities of the inguinal canal (IC), an area known for its complex anatomy. A thorough understanding of the embryologic and imaging characteristics of the contents of the IC is essential for any general radiologist. Moreover, an awareness of the various pathologic conditions that can affect IC structures is crucial to preventing misdiagnoses and ensuring optimal patient care. Early detection of IC abnormalities can reduce the risk of morbidity and mortality and facilitate proper treatment...
October 7, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27715711/strategies-to-increase-cancer-detection-review-of-true-positive-and-false-negative-results-at-digital-breast-tomosynthesis-screening
#11
Katrina E Korhonen, Susan P Weinstein, Elizabeth S McDonald, Emily F Conant
Digital breast tomosynthesis (DBT) represents a valuable addition to breast cancer screening by decreasing recall rates while increasing cancer detection rates. The increased accuracy achieved with DBT is due to the quasi-three-dimensional format of the reconstructed images and the ability to "scroll through" breast tissue in the reconstructed images, thereby reducing the effect of tissue superimposition found with conventional planar digital mammography. The margins of both benign and malignant lesions are more conspicuous at DBT, which allows improved lesion characterization, increased reader confidence, and improved screening outcomes...
October 7, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27689833/elastography-in-chronic-liver-disease-modalities-techniques-limitations-and-future-directions
#12
Aparna Srinivasa Babu, Michael L Wells, Oleg M Teytelboym, Justin E Mackey, Frank H Miller, Benjamin M Yeh, Richard L Ehman, Sudhakar K Venkatesh
Chronic liver disease has multiple causes, many of which are increasing in prevalence. The final common pathway of chronic liver disease is tissue destruction and attempted regeneration, a pathway that triggers fibrosis and eventual cirrhosis. Assessment of fibrosis is important not only for diagnosis but also for management, prognostic evaluation, and follow-up of patients with chronic liver disease. Although liver biopsy has traditionally been considered the reference standard for assessment of liver fibrosis, noninvasive techniques are the emerging focus in this field...
September 30, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27689831/noninvasive-physiologic-vascular-studies-a-guide-to-diagnosing-peripheral-arterial-disease
#13
Robert C Sibley, Stephen P Reis, Jarrod J MacFarlane, Mark A Reddick, Sanjeeva P Kalva, Patrick D Sutphin
Noninvasive physiologic vascular studies play an important role in the diagnosis and characterization in peripheral arterial disease (PAD) of the lower extremity. These studies evaluate the physiologic parameters of blood flow through segmental arterial pressures, Doppler waveforms, and pulse volume recordings. Collectively, they comprise a powerful toolset for defining the functionality of the arterial system, localizing the site of disease, and providing prognostic data. This technology has been widely adopted by diverse medical specialty practitioners, including radiologists, surgeons, cardiologists, and primary care providers...
September 30, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27689832/invited-commentary-on-elastography-in-chronic-liver-disease
#14
Richard G Barr
No abstract text is available yet for this article.
September 26, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27831847/congratulations-to-the-2016-rsna-outstanding-educator-kristen-k-destigter-md
#15
Valerie P Jackson
No abstract text is available yet for this article.
November 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27831846/a-note-of-thanks
#16
Richard L Baron, Jeffrey S Klein
No abstract text is available yet for this article.
November 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27831845/thoracolumbar-spine-injury-at-ct-trauma-emergency-radiology
#17
Sameer B Raniga, Mathew R Skalski, Anand Kirwadi, Venugopal K Menon, Faisal H Al-Azri, Sajid Butt
No abstract text is available yet for this article.
November 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27831844/dual-energy-ct-in-emergency-neuroimaging-added-value-and-novel-applications
#18
Christopher A Potter, Aaron D Sodickson
Dual-energy computed tomography (CT) is a powerful diagnostic tool that is becoming more widely clinically available. Dual-energy CT has the potential to aid in the detection or add diagnostic confidence in the evaluation of a variety of emergent neurologic conditions with use of postprocessing techniques that allow one to take advantage of the different x-ray energy-dependent absorption behaviors of different materials. Differentiating iodine from hemorrhage may help in delineating CT angiographic spot signs, which are small foci of intracranial hemorrhage seen on CT angiograms in cases of acute hemorrhage...
November 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27831843/realizing-improvement-through-team-empowerment-rite-a-team-based-project-based-multidisciplinary-improvement-program
#19
David B Larson, L Jake Mickelsen, Kandice Garcia
Performance improvement in a complex health care environment depends on the cooperation of diverse individuals and groups, allocation of time and resources, and use of effective improvement methods. To address this challenge, we developed an 18-week multidisciplinary training program that would also provide a vehicle for effecting needed improvements, by using a team- and project-based model. The program began in the radiology department and subsequently expanded to include projects from throughout the medical center...
November 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27831842/imaging-of-the-urachus-anomalies-complications-and-mimics
#20
Carolina Parada Villavicencio, Sharon Z Adam, Paul Nikolaidis, Vahid Yaghmai, Frank H Miller
Urachal anomalies are more common than previously thought, with more cases discovered incidentally, because of the increased use of cross-sectional imaging. Although an abnormal persistence of an embryologic communication between the bladder and the umbilicus is often recognized and managed in childhood, it may persist into adulthood, with a greater risk of morbidity. Congenital urachal anomalies that are detected early can benefit from an optimized management including surgical approach with a complete resection of the urachal remnant in cases when spontaneous resolution or medical management has failed...
November 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
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