Hisham Tchelepi

Ultrasound Fusion in Interventional Radiology: A Practical Guide to Procedural Applications

Benjamin York, Bryce David Beutler, En‐Yuh Chang, Ishan Shah et autres

Ultrasound (US) fusion, defined as coregistration of cross-sectional images and real-time planar US, has emerged as a powerful tool to enhance the safety and accuracy of image-guided interventions. Computed tomography (CT), magnetic resonance (MR) imaging, and positron emission tomography (PET) can be …

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Ultrasound innovations in abdominal radiology: multiparametic imaging in liver transplantation

Samantha S Chau, Bryce David Beutler, Edward G. Grant, Hisham Tchelepi

PURPOSE: Ultrasound plays a central role in liver transplant evaluation. Acute, subacute, and chronic complications can be readily identified using grayscale and color Doppler ultrasound. Contrast-enhanced ultrasound adds a new dimension to liver transplant evaluation, depicting vascular and parenchymal processes with exquisite …

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Contrast-enhanced ultrasound (CEUS) for the characterization of intra-scrotal lesions

Benjamin P. Sugar, Jerry M. Thomas, Bryce David Beutler, Thomas G. Clifford et autres

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Wearable bioadhesive ultrasound shear wave elastography

Hsiao‐Chuan Liu, Yushun Zeng, Chen Gong, Xiaoyu Chen et autres

Acute liver failure (ALF) is a critical medical condition defined as the rapid development of hepatic dysfunction. Conventional ultrasound elastography cannot continuously monitor liver stiffness over the course of rapidly changing diseases for early detection due to the requirement of a handheld …

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An Objective Computer-Assisted Measurement of Sonographic Renal Cortical Echogenicity

Bryce David Beutler, Bassim R. El-Sabawi, Daphne K. Walker, Steven Cen et autres

ABSTRACT: Renal cortical echogenicity represents a marker of renal function. However, evaluation of the renal echotexture is subjective and thus disposed to error and interrater variability. Computer-aided image analysis may be used to objectively assess renal cortical echogenicity by comparing the echogenicity …

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Ultrasound Fusion: Applications in Musculoskeletal Imaging

Jordan Scott Gross, Andrew A. Yaeger, Hisham Tchelepi, George R. Matcuk

Ultrasound fusion is an established technique that pairs real time B-scan ultrasound (US) with other forms of cross-sectional imaging, including computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography (PET). Each of these imaging modalities has distinct advantages. CT provides …

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PET/CT Ultrasound Fusion for Percutaneous Biopsy

Bryce David Beutler, Gilbert Whang, Hisham Tchelepi

PURPOSE: The aim of this study was to assess the diagnostic yield and complication rate of 18 F-FDG PET/CT ultrasound (US) fusion for percutaneous biopsy of FDG-avid lesions among patients with known or suspected malignancy. PATIENTS AND METHODS: We describe the clinical, …

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Imaging of Benign and Malignant Breast Lesions Using Contrast-Enhanced Ultrasound

Sandy C. Lee, Hisham Tchelepi, Nasim Khadem, Bhushan Desai et autres

ABSTRACT: Contrast-enhanced ultrasound is a promising noninvasive imaging technique for evaluating benign and malignant breast lesions, as contrast provides information about perfusion and microvasculature. Contrast-enhanced ultrasound is currently off-label use in the breast in the United States, but its clinical and investigational …

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Utility of Contrast‐Enhanced Ultrasound and 4‐Dimensional Computed Tomography for Preoperative Detection and Localization of Parathyroid Adenomas Compared With Surgical Results

Alexander Lerner, Edward G. Grant, Jay Acharya, Tamara N. Chambers et autres

OBJECTIVES: To investigate the accuracy, sensitivity, and specificity of contrast-enhanced ultrasound (CEUS) for detection of parathyroid adenomas and compare it to those of 4-dimensional computed tomography (4DCT), which has been established as a reliable, effective tool for preoperative localization of parathyroid adenomas. …

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Super-Resolution Ultrasound Localization Microscopy for Visualization of the Ocular Blood Flow

Xuejun Qian, Chengwu Huang, Runze Li, Brian J. Song et autres

OBJECTIVE: The ocular vascular system plays an important role in preserving the visual function. Alterations in either anatomy or hemodynamics of the eye may have adverse effects on vision. Thus, an imaging approach that can monitor alterations of ocular blood flow of …

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Current Ultrasound Technologies and Instrumentation in the Assessment and Monitoring of COVID-19 Positive Patients

Xuejun Qian, Robert Wodnicki, Haochen Kang, Junhang Zhang et autres

Since the emergence of the COVID-19 pandemic in December of 2019, clinicians and scientists all over the world have faced overwhelming new challenges that not only threaten their own communities and countries but also the world at large. These challenges have been …

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Contrast‐Enhanced Ultrasound Appearance of Hypervirulent Klebsiella pneumoniae Liver Abscesses

Gilbert Whang, Robert Dalton Harris, Hisham Tchelepi

There has been a paradigm shift with Klebsiella pneumoniae (KP) emerging as the most frequently isolated bacterium in pyogenic liver abscesses in immunocompetent patients. Colonization of this hypervirulent KP strain has led to community-acquired liver abscesses. Septic seeding to distant sites of …

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