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  • Journal Highlights

    June 01, 2014

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

    Volume-rendered CT angiogram acquired in 2001 with a single 21-second 16 3 1.25-mm helical scan
    (Click to enlarge) Volume-rendered CT angiogram acquired in 2001 with a single 21-second 16 3 1.25-mm helical scan encompasses the arterial system from extracranial circulation through pedal arteries. The speed of acquisition increased approximately 25-fold over the 10 years since the first spiral CT angiogram in 1991.
    (Radiology 2014;271;3:633-652) ©RSNA, 2014. All rights reserved. Printed with permission. 

    Radiology
    CT Angiography after 20 Years: A Transformation in Cardiovascular Disease Characterization Continues to Advance

    Over a short 20-year span, CT angiography (CTA) has evolved from a fledgling imaging modality, incapable of encompassing most vascular territories, to a critical clinical tool that plays a dominant role in the diagnosis and management of disease within virtually every arterial bed in the body.

    In an article in the June issue of Radiology (RSNA.org/Radiology), Geoffrey Rubin, M.D., of Duke Clinical Research Institute, Durham, N.C., and colleagues recount the evolution of CTA to a maturing modality that has provided unique insights into cardiovascular disease characterization and management. The authors present selected clinical challenges as contrasting examples of how CTA is changing the approach to cardiovascular disease diagnosis and management, including:

    • Acute aortic syndromes
    • Peripheral vascular disease
    • Aortic stent-graft
    • Transcatheter aortic valve assessment
    • Coronary artery disease

    The authors also explore recently introduced capabilities for multispectral imaging, tissue perfusion imaging and radiation dose reduction through iterative reconstruction with consideration toward the continued refinement and advancement of CTA.

    “…..the evolution of novel CT scanner geometries, alternative raw data reconstruction strategies, and sophisticated post processing techniques are paving the way for the further evolution of CTA to provide greater relevance in predicting the clinical importance of cardiovascular lesions and facilitating their effective management,” the authors write.

    This article meets the criteria for AMA PRA Category 1 Credit™. SA-CME is available online only. 
    Residual tumor after near-total resection in a patient with meningioma
    (Click to enlarge) Residual tumor after near-total resection in a patient with meningioma. A carbon 11 (11C) methionine PET image shows residual intradiploic meningioma (arrow).
    (RadioGraphics 2014;34;702–721) ©RSNA, 2014. All rights reserved. Printed with permission. 

    Radiographics
    Critical Role of Imaging in the Neurosurgical and Radiotherapeutic Management of Brain Tumors

    In the past 30 years, imaging has become the primary imaging modality in the evaluation of brain tumors. Along with conventional CT and MR imaging, more advanced imaging techniques are increasingly being used by referring neurosurgeons, radiation oncologists and neurooncologists to help guide patient management.

    In an article in the May-June issue of RadioGraphics (RSNA.org/RadioGraphics), Lily L. Wang, M.B.B.S., of the University of Cincinnati College of Medicine, and colleagues discuss how the evolution of new imaging technology has not only improved the preoperative assessment of tumors, but also has expanded surgical approaches, aided in radiation treatment planning, and become a critical tool in evaluating therapeutic outcomes. Specifically, the authors discuss:

    • Diffusion-weighted imaging
    • Perfusion MR imaging
    • Spectroscopy
    • Functional MR imaging
    • Diffusion tensor imaging

    The authors stress the critical role these imaging techniques play in aiding in the diagnosis and appropriate treatment of intracranial lesions.

    “As quickly as new imaging techniques develop, our nonradiologist colleagues adopt them into their practices, underscoring the central role that radiology plays on the multidisciplinary brain tumor team,” the authors write.

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