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Johannes Rübenthaler,Stephanie Wilson,Dirk-André Clevert 대한초음파의학회 2019 ULTRASONOGRAPHY Vol.38 No.2
Ultrasonography is a generally accepted imaging technique for diagnosing and monitoring cystic renal lesions. The widely used Bosniak classification (I-IV) categorizes renal cystic lesions into five distinctive groups according to ultrasonography and computed tomography (CT) image criteria. For solid renal lesions, determination of vascularity is discriminatory for malignancy in most instances. In indeterminate cases, contrast-enhanced ultrasound (CEUS) and magnetic resonance imaging/CT-ultrasound image fusion are able to detect and characterize difficult pathologies, with superior performance to either technique alone. In contrast to multislice CT (MS-CT), ultrasound image fusion is a real-time imaging technique that can be used in combination with other cross-sectional imaging modalities. This technical note describes stateof-the-art image fusion of CEUS and MS-CT to detect and characterize unclear renal pathologies.
( Tae Kyoung Kim ),( Seung Yeon Noh ),( Stephanie R Wilson ),( Yuko Kono ),( Fabio Piscaglia ),( Hyun-jung Jang ),( Andrej Lyshchik ),( Christoph F. Dietrich ),( Juergen K. Willmann ),( Alexander Veze 대한간학회 2017 Clinical and Molecular Hepatology(대한간학회지) Vol.23 No.4
Medical imaging plays an important role in the diagnosis and management of hepatocellular carcinoma (HCC). The Liver Imaging Reporting and Data System (LI-RADS) was initially created to standardize the reporting and data collection of CT and MR imaging for patients at risk for HCC. As contrast-enhanced ultrasound (CEUS) has been widely used in clinical practice, it has recently been added to the LI-RADS. While CEUS LI-RADS shares fundamental concepts with CT/MRI LI-RADS, there are key differences between the modalities reflecting dissimilarities in the underlying methods of image acquisition and types of contrast material. This review introduces a recent update of CEUS LI-RADS and explains the key differences from CT/MRI LI-RADS. (Clin Mol Hepatol 2017;23:280-289)
양현경,김태경,Peter N. Burns,장현정,Yuko Kono,Korosh Khalili,Stephanie R. Wilson 대한초음파의학회 2019 ULTRASONOGRAPHY Vol.38 No.4
Contrast-enhanced ultrasound (CEUS) is a powerful technique for differentiating focal liver lesions (FLLs) without the risks of potential nephrotoxicity or ionizing radiation. In the diagnostic algorithm for FLLs on CEUS, washout is an important feature, as its presence is highly suggestive of malignancy and its characteristics are useful in distinguishing hepatocellular from nonhepatocellular malignancies. Interpreting washout on CEUS requires an understanding that microbubble contrast agents are strictly intravascular, unlike computed tomography or magnetic resonance imaging contrast agents. This review explains the definition and types of washout on CEUS in accordance with the 2017 version of the CEUS Liver Imaging Reporting and Data System and presents their applications to differential diagnosis with illustrative examples. Additionally, we propose potential mechanisms of rapid washout and describe the washout phenomenon in benign entities.