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  • Journal Highlights

    May 01, 2014

    The following are highlights from the current issues of RSNA’s two peer-reviewed journals.

    Effectiveness of VNC imaging in clinical practice
    (Click to enlarge) Effectiveness of VNC imaging in clinical practice. Contrast-enhanced dual-energy CT image. Note on VNC image the accurate subtraction of highly concentrated iodinated contrast material from the collecting system (curved arrow) with preservation of the pelvic renal stone (arrow).
    (Radiology 2014;271;2:327–342) ©RSNA, 2014. All rights reserved. Printed with permission. 

    State of the Art: Dual-Energy CT of the Abdomen

    Intensive research devoted to exploiting the unique and powerful opportunities of dual-energy CT has led to protocol modifications for radiation dose reduction, improved diagnostic performance for detection and characterization of diseases and image quality optimization.

    In a State-of-the-Art article in the May issue of Radiology (RSNA.org/Radiology), Daniele Marin, M.D., Duke University Medical Center, Durham, N.C., and colleagues discuss the basic principles, instrumentation and design, examples of current clinical applications in the abdomen and pelvis and future opportunities of dual-energy CT (DECT).

    DECT is gradually changing the way CT is practiced today, according to the authors. By interrogating the unique characteristics of different materials at different X-ray energies, DECT provides quantitative information about tissue composition, overcoming the limitations of attenuation-based conventional single energy CT imaging.

    “In the future, streamlined strategies to improve workflow efficiency (e.g., development vendor-independent dual energy postprocessing workstation seamlessly integrated into PACS), decreased costs, and reimbursement by third-party payers, will expedite widespread adoption of this new technology into clinical practice,” the authors write.

    This article meets the criteria for AMA PRA Category 1 Credit™. SA-CME is available online only. 
    Primary sclerosing cholangitis in a 63-year-old man
    (Click to enlarge) Primary sclerosing cholangitis in a 63-year-old man. Maximum intensity projection image from a 3D RARE MR cholangiopancreatographic study shows multiple strictures of the common bile duct interspersed with focal dilatations, creating a beaded appearance (arrows), along with multiple discontinuous strictures of the intrahepatic bile ducts involving both hepatic lobes (arrowheads).
    (RadioGraphics 2014;34;565-585) ©RSNA, 2014. All rights reserved. Printed with permission. 

    Adult Bile Duct Strictures: Role of MR Imaging and MR Cholangiopancreatography in Characterization

    Bile duct strictures in adults are secondary to a wide spectrum of benign and malignant pathologic conditions. Awareness of the various causes of bile duct strictures in adults and familiarity with their appearances at MR imaging–MR cholangiopancreatography are important for accurate diagnosis and optimal patient management.

    In an article in the May-June issue of RadioGraphics (RSNA.org/RadioGraphics), Venkata S. Katabathina, M.D., of the University of Texas Health Science Center at San Antonio, and colleagues review the spectrum of bile duct strictures in adult patients and discuss the MR imaging and MR cholangiopancreatographic findings, with emphasis on differentiation between benign and malignant strictures.

    Contrast-enhanced MR imaging with MR cholangiopancreatography can be helpful in identifying bile duct strictures in adult patients and in differentiating between benign and malignant strictures, according to the authors.

    “Although biopsy is necessary for distinguishing malignant from benign strictures, certain MR imaging findings of the narrowed segment may favor a malignant cause,” the authors write.

    Read the Invited Commentary by Andrew J. Taylor, M.D., of the University of Minnesota, Minneapolis.

    This article meets the criteria for AMA PRA Category 1 Credit™. SA-CME is available in print. 

    Stroke Edition of Radiology Select Offered at Reduced Rate in May

    Radiology Select volume 2, StrokeIn recognition of Stroke Awareness month, Radiology Select, Volume 2: Stroke, is available at 50 percent off the standard price for the online education edition during May to members and non-members.

    Radiology Select (RSNA.org/RadiologySelect) is a continuing series of selected Radiology articles that highlight developments in imaging science, techniques and clinical practice. Each volume focuses on a particular topic important in the field and is supplemented by commentaries, author interviews, podcasts and educational opportunities. Radiology Select is a great way to stay at the forefront of radiology while maintaining the necessary certifications. Volume 2: Stroke features 30 articles that cover:

    • CT applications including dual-energy imaging, perfusion imaging
 and thrombus detection
    • Techniques for risk stratification, diagnosis and therapeutic
 monitoring in the internal carotid artery
    • “Mismatch” MR imaging techniques
    • Observations on neonatal intracranial hemorrhage and cerebral
artery flow in pediatric sickle cell disease
    The Online Educational Edition includes four SAMs tests with an opportunity to earn eight SAM credits and 12 CME credits. This enduring material can be applied towards the ABR self-assessment requirement. 

    Radiology Podcasts

    Radiology Podcasts logoListen to Radiology Editor Herbert Y. Kressel, M.D., deputy editors and authors discuss the following articles in the April issue of Radiology at pubs.rsna.org/page/radiology/podcasts:

    • “Digital Mammography Screening:  Association between Detection Rate and Nuclear Grade of Ductal Carcinoma in Situ,” Stefanie Weigel, M.D., and colleagues.
    • “Mapping the Effect of the Apolipoprotein E Genotype on 4-Year Atrophy Rates in an Alzheimer Disease–related Brain Network,” Christopher A. Hostage, M.D., and colleagues.
    • “Cardiac Arrythmias: Multimodal Assessment Integrating Body Surface ECG Mapping into Cardiac Imaging,” Hubert Cochet, M.D., and colleagues.

    Nominate Radiology Articles for the 2014 Margulis Award

    The Nominating Committee for the Margulis Award for Scientific Excellence is accepting nominations from readers for Radiology articles published between July 2013 and June 2014. The main selection criteria are scientific quality and originality. Please send your nomination, including the article citation and a brief note highlighting the reasons for the nomination, to Pamela Lepkowski, assistant to the editor, plepkowski@rsna.org. The deadline for nominations is June 10, 2014.

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