Research Topics
| Hyun Jung JangSummaryAffiliation: University of Toronto Country: Canada Publications
| Collaborators
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Detail Information
Publications
Perfusion and parenchymal changes related to vascular alterations of the liverHyun Jung Jang
Department of Medical Imaging, Toronto General Hospital, University of Toronto, ON, Canada
Abdom Imaging 37:404-21. 2012....
Enhancement patterns of hepatocellular carcinoma at contrast-enhanced US: comparison with histologic differentiationHyun Jung Jang
Department of Medical Imaging, University of Toronto, Toronto General Hospital, 585 University Ave, Toronto, ON, Canada M5G 2N2
Radiology 244:898-906. 2007..To retrospectively compare the arterial and portal venous phase enhancement patterns of hepatocellular carcinoma (HCC) at contrast material-enhanced ultrasonography (US) with the degree of HCC histologic differentiation...- Imaging of focal liver lesionsHyun Jung Jang
Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto, ON, Canada
Semin Roentgenol 44:266-82. 2009..This article describes the features of commonly encountered benign and malignant liver lesions on sonography and contrast-enhanced dynamic imaging, including contrast-enhanced ultrasound (CEUS), CT, and MR imaging... 
Contrast-enhanced ultrasound in the detection and characterization of liver tumorsHyun Jung Jang
Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
Cancer Imaging 9:96-103. 2009..The washout phenomenon of malignant tumors in general is useful to differentiate them from benign lesions...- Imaging of malignant liver masses: characterization and detectionHyun Jung Jang
Toronto General Hospital, University of Toronto, Ontario, Canada
Ultrasound Q 22:19-29. 2006..Microbubble agents, confined to the intravascular space, may infrequently characterize malignancy by showing washout whereas CT or MR shows persistent enhancement due to interstitial distribution... - Benign liver masses: imaging with microbubble contrast agentsTae Kyoung Kim
Toronto General Hospital, University of Toronto, Ontario, Canada
Ultrasound Q 22:31-9. 2006..Most benign liver masses show characteristic features on CEUS, allowing an accurate diagnosis. This review article describes typical enhancement features of common benign liver masses... - Real-time temporal maximum-intensity-projection imaging of hepatic lesions with contrast-enhanced sonographyStephanie R Wilson
Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
AJR Am J Roentgenol 190:691-5. 2008..CONCLUSION: Vascular morphology is depicted at a level or detail not seen before with sonography. High-frame-rate sequences of less than one second uniquely show arterial structure in liver lesions... - Focal nodular hyperplasia and hepatic adenoma: differentiation with low-mechanical-index contrast-enhanced sonographyTae Kyoung Kim
Department of Medical Imaging, Tornoto General Hospital, University of Tornoto, 585 University Ave, Toronto, ON M5G 2N2, Canada
AJR Am J Roentgenol 190:58-66. 2008..The purpose of our study was to determine the differentiating features of focal nodular hyperplasia (FNH) and hepatic adenoma on contrast-enhanced sonography... - Are metastases really hypovascular in the arterial phase? The perspective based on contrast-enhanced ultrasonographyJessica Murphy-Lavallee
Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
J Ultrasound Med 26:1545-56. 2007..The purpose of this study was to describe enhancement and vascularity characteristics of liver metastases on real-time low-mechanical index contrast-enhanced ultrasonography... - Does hepatic vein transit time performed with contrast-enhanced ultrasound predict the severity of hepatic fibrosis?An Tang
Department of Medical Imaging, University of Toronto, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
Ultrasound Med Biol 37:1963-9. 2011..Further work investigating the different interaction of Definity, SonoVue and Levovist with the reticulo-endothelial system may help explain the discrepant results reported here... - Pseudoenhancement within the local ablation zone of hepatic tumors due to a nonlinear artifact on contrast-enhanced ultrasoundHojun Yu
Department of Medical Imaging, University of Toronto, Toronto General Hospital, 585 University Ave, Toronto, ON M5G 2N2, Canada
AJR Am J Roentgenol 194:653-9. 2010..The purpose of this study was to describe the imaging features of this artifact... - Indeterminate 1-2-cm nodules found on hepatocellular carcinoma surveillance: biopsy for all, some, or none?Korosh Khalili
Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
Hepatology 54:2048-54. 2011..Limiting biopsy to nodules with arterial hypervascularity or in the presence of a synchronous typical HCC would detect the majority of HCCs while substantially reducing the number of biopsies... - Impact of contrast-enhanced ultrasonography in a tertiary clinical practiceBina Lanka
Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
J Ultrasound Med 26:1703-14. 2007..The purpose of this study was to assess the impact of contrast-enhanced ultrasonography (CEUS) of the liver in a tertiary clinical practice... - Small nodules (1-2 cm) in liver cirrhosis: characterization with contrast-enhanced ultrasoundHyun Jung Jang
Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto, Ontario M5G 2N2, Canada
Eur J Radiol 72:418-24. 2009..To determine the diagnostic efficacy of arterial phase contrast-enhanced ultrasound (CEUS) for characterizing small hepatic nodules (1-2 cm) in patients with high-risk for hepatocellular carcinoma (HCC)... - Enhancement patterns of focal liver masses: discordance between contrast-enhanced sonography and contrast-enhanced CT and MRIStephanie R Wilson
Department of Medical Imaging, Toronto General Hospital, 585 University Ave, Toronto, ON, Canada, M5G 2N2
AJR Am J Roentgenol 189:W7-W12. 2007..Infrequent cases of discordance remain unexplained. Recognition of the cause of the infrequent disagreement in enhancement patterns on contrast-enhanced sonography with those on CT and MRI improves diagnostic interpretation... - Diagnosis of focal liver masses on ultrasonography: comparison of unenhanced and contrast-enhanced scansStephanie R Wilson
Department of Medical Imaging, Toronto General Hospital and University of Toronto, Toronto, Ontario, Canada
J Ultrasound Med 26:775-87; quiz 788-90. 2007..The purpose of this study was to compare the diagnostic accuracy, confidence level, and recommended management of focal liver masses after contrast-enhanced ultrasonography (CEUS) compared with unenhanced ultrasonography alone... - Hypervascular liver masses on contrast-enhanced ultrasound: the importance of washoutDeepak Bhayana
Department of Medical Imaging, Toronto General Hospital, University of Toronto, 585 University Ave, Toronto, ON M5G 2N2, Canada
AJR Am J Roentgenol 194:977-83. 2010..The objective of our study was to determine the role of negative enhancement (washout), its presence and timing, in the differential diagnosis of hypervascular liver masses on contrast-enhanced ultrasound... - Imaging diagnosis of hepatocellular carcinoma with differentiation from other pathologyTae Kyoung Kim
Department of Medical Imaging, Toronto General Hospital, University of Toronto, 585 University Avenue, Toronto, Ontario M5G 2N2, Canada
Clin Liver Dis 9:253-79. 2005..Intimate collaboration of hepatologists, pathologists, surgeons, and radiologists with reasonable imaging and clinical criteria estimating the degree of malignancy is imperative... - Fading hepatic hemangiomas on multiphasic CTSamira Alturkistany
Department of Medical Imaging, University of Toronto, Toronto General Hospital, 585 University Avenue, Toronto, ON, M5G 2N2, Canada
Abdom Imaging 37:775-80. 2012..To describe fading hemangiomas [substantially lower attenuation (>30 HU) than vascular pool in the portal venous phase (PVP)] and to determine their incidence and characteristics on multiphasic CT... - Analysis of gadobenate dimeglumine-enhanced MR findings for characterizing small (1-2-cm) hepatic nodules in patients at high risk for hepatocellular carcinomaTae Kyoung Kim
Department of Medical Imaging, University of Toronto, Toronto General Hospital, 585 University Ave, Toronto, ON, Canada M5G 2N2
Radiology 259:730-8. 2011.... - Hepatocellular nodules in liver cirrhosis: contrast-enhanced ultrasoundTae Kyoung Kim
Department of Medical Imaging, Toronto General Hospital, University of Toronto, ON, Canada
Abdom Imaging 36:244-63. 2011..CEUS can be effectively used in the diagnostic algorithm of small (1-2 cm) newly detected nodules during HCC surveillance... - Optimization of imaging diagnosis of 1-2 cm hepatocellular carcinoma: an analysis of diagnostic performance and resource utilizationKorosh Khalili
Department of Medical Imaging, University of Toronto, Canada
J Hepatol 54:723-8. 2011..To determine the optimal imaging scan or combinations in terms of diagnostic performance and resource utilization for 1-2 cm nodules found on surveillance for hepatocellular carcinoma... - Evaluation of upper urinary tract tumors with portal venous phase MDCT: a case-control studyMax Kupershmidt
Joint Department of Medical Imaging, University Health Network, Mount Sinai Hospital and Women s College Hospital, University of Toronto, 610 University Ave, Toronto, ON M5G 2M9, Canada
AJR Am J Roentgenol 197:424-8. 2011..The purpose of this article is to assess the detection and negative prediction rate of upper urinary tract tumors in nonopacified urinary tracts on portal venous phase MDCT... - Comparison of low dose with standard dose abdominal/pelvic multidetector CT in patients with stage 1 testicular cancer under surveillanceMartin E O'Malley
Joint Department of Medical Imaging, Princess Margaret Hospital, Toronto, ON, Canada
Eur Radiol 20:1624-30. 2010..To compare the image quality and acceptability of a low dose with those of standard dose abdominal/pelvic multidetector CT in patients with stage 1 testicular cancer managed by surveillance... - Value of the unenhanced phase for detection of hepatocellular carcinomas 3 cm or less when performing multiphase computed tomography in patients with cirrhosisDeirdre J Doyle
Department of Medical Imaging, Mount Sinai Hospital University Health Network, University of Toronto, Ontario, Canada
J Comput Assist Tomogr 31:86-92. 2007..To determine whether unenhanced images are of added benefit to dual-phase computed tomography (CT) for detection of hepatocellular carcinomas (HCCs) 3 cm or less... - Portal and hepatic vein thrombosis in liver abscess: CT findingsMohammed Aejaz Syed
Department of Medical Imaging, University Health Networks and Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
Eur J Radiol 61:513-9. 2007..Our aim is to describe imaging findings of portal and hepatic vein thrombosis in pyogenic liver abscess on contrast-enhanced MDCT and to determine the incidence and evolving patterns on follow-up imaging... - IgG4-related sclerosing disease: autoimmune pancreatitis and extrapancreatic manifestationsParaskevi A Vlachou
Department of Medical Imaging and Pathology, University of Toronto, Toronto, Canada
Radiographics 31:1379-402. 2011..It is important to recognize multiorgan involvement of IgG4-related sclerosing disease and be familiar with its clinical and imaging features because it demonstrates a favorable response to treatment... - Understanding the natural history of focal nodular hyperplasia in the liver with MRIJaydeep A Halankar
Department of Medical Imaging, University Health Network, Mount Sinai Hospital and Women s College Hospital, University of Toronto, Toronto, ON, Canada
Indian J Radiol Imaging 22:116-20. 2012..To determine the incidence of natural growth or regression of focal nodular hyperplasia (FNH) in the liver... - Biliary anatomy in potential right hepatic lobe living donor liver transplantation (LDLT): the utility of CT cholangiography in the setting of inconclusive MRCPSean E McSweeney
Joint Department of Medical Imaging, University Health Network, Mount Sinai Hospital, Canada
Eur J Radiol 81:6-12. 2012..To determine the utility of CT cholangiography (CT-Ch) in preoperative evaluation of the biliary anatomy of living-donor liver transplantation (LDLT) donors when magnetic resonance cholangiopancreatography (MRCP) is inconclusive... - Assessment of therapeutic response in hepatocellular carcinoma treated with percutaneous radio frequency ablation: comparison of multiphase helical computed tomography and power Doppler ultrasonography with a microbubble contrast agentDongil Choi
Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
J Ultrasound Med 21:391-401. 2002..Both techniques, however, showed a limitation in detecting small or microscopic residual tumors and in predicting local regrowth in the treated lesions... - Indeterminate small, low-attenuating hepatocellular nodules on helical CT in patients with chronic liver disease: 2-year follow-upJung Wook Seo
Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Seoul 135-710, Republic of Korea
Clin Imaging 29:266-72. 2005..Some low-attenuating nodules larger than 10 mm in diameter may develop into hepatocellular carcinoma... - Focal hepatic lesions: evaluation with contrast-enhanced gray-scale harmonic USHyun-Jung Jang
Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Kangnam-gu, Seoul, Korea
Korean J Radiol 4:91-100. 2003..The characteristic findings of various focal hepatic lesions were thus determined... - Focal eosinophilic necrosis of the liver in patients with underlying gastric or colorectal cancer: CT differentiation from metastasisHyun-Jung Jang
Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
Korean J Radiol 3:240-4. 2002.... - Hepatic hemangioma: atypical appearances on CT, MR imaging, and sonographyHyun-Jung Jang
Radiation Medicine Branch, Research Institute, National Cancer Center, 809 Madu 1-dong, Ilsan-gu, Goyang-si, Gyeonggi-do, 411-764, Korea
AJR Am J Roentgenol 180:135-41. 2003 - Small hypoattenuating lesions in the liver on single-phase helical CT in preoperative patients with gastric and colorectal cancer: prevalence, significance, and differentiating featuresHyun-Jung Jang
Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50, Ilwon-Dong, Kangnam-gu 135-710, Seoul, Korea
J Comput Assist Tomogr 26:718-24. 2002..2%). For SLAHs larger than 5 mm, careful analysis of CT findings can be helpful to differentiate benign from malignant SLAH... - Plasma levels of D-dimer and soluble fibrin polymer in patients with hepatocellular carcinoma: a possible predictor of tumor thrombosisHyun Kyung Kim
Research Institute and Hospital, National Cancer Center, 809, Madu 1, Ilsan, Goyang, Gyeonggi, 411-764, South Korea
Thromb Res 109:125-9. 2003..This study shows that a positive TpP level is a predictor of tumor thrombosis in HCC, which suggests that TpP may be useful for identifying tumor thrombus in the portal and hepatic veins... - Early hepatocellular carcinoma: pathology, imaging, and therapyTadatoshi Takayama
Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
Ann Surg Oncol 15:972-8. 2008..In 1987, Japanese researchers proposed to define the pathological concept of early hepatocellular carcinoma (HCC). However, there are some conceptual differences between the East and the West in the diagnosis and treatment of early HCC...