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13 results found

Caudate–right lobe ratio

Caudate-right lobe ratio (C/RL) is used in the assessment of livers, usually in the setting of cirrhosis, in which there is atrophy of the right lobe with hypertrophy of the caudate lobe.  Method for measuring image: axial slice immediately below the bifurcation of the main portal vein line 1...

CT liver volumetry in living donor liver transplantation (approach)

CT liver volumetry in living donor liver transplantation is essential imaging studies in preoperative assessment. Liver volumetry is performed for the donor liver to calculate the graft volume and remnant liver volume. Preoperative measurement of liver volume is important to avoid graft mismatc...

Focused Assessment with Sonography for Trauma (FAST) scan

Focused Assessment with Sonography for Trauma (FAST) scan is a point-of-care ultrasound examination performed at the time of presentation of a trauma patient.  It is invariably performed by a clinician, who should be formally trained, and is considered as an 'extension' of the trauma clinical a...

Gallbladder wall thickening

Thickening of the gallbladder wall, usually considered >3 mm, is a non-specific sign of various conditions. Pathology Gallbladder wall thickening can be caused by inflammatory, benign, and malignant etiologies. Pseudothickening caused by the normal postprandial state of the contracted gallblad...

Geographic appearance

Geographic appearance is a term used in imaging, and other clinical fields (e.g. histopathology) to describe lesions with a well-circumscribed margins with adjacent tissues.  The term derives from the somewhat similar appearance of the outline of countries on a map or the clear demarcation forme...

Hepatobiliary contrast agents and LI-RADS

LI-RADS (Liver Imaging Reporting and Data System) is both a set of standardized terminology and a classification system for imaging findings in liver lesions. The LI-RADS score for a liver lesion is an indication of its relative risk for hepatocellular carcinoma (HCC). The classification system ...

Hyperechoic liver lesions

A hyperechoic liver lesion on ultrasound can arise from a number of entities, both benign and malignant. A benign hepatic hemangioma is the most common entity encountered, but in patients with atypical findings or risk for malignancy, other entities must be considered. Benign hepatic hemangiom...

Imaging in liver transplantation

Imaging in liver transplantation is aimed to evaluate donor and recipient for successful transplantation and its outcome. Pre-transplant evaluation Donor volume of liver parenchymal disease (diffuse or focal) vascular anatomy arterial variations venous variations biliary anatomy Recipie...

Kasai portoenterostomy

Kasai portoenterostomy is the surgery that comprises exposing the porta hepatis by radical excision of all bile duct tissue up to the liver capsule and attaching a Roux-en-Y loop of jejunum to the uncovered liver capsule above the bifurcation of the portal vein creating a portoenterostomy 1. In...

Liver lesions (pediatric)

Pediatric liver lesions are a heterogeneous group that includes infiltrative lesions and those that demonstrate mass-effect. Moreover, they may be solitary or multiple, benign or malignant: benign liver tumors malignant liver tumors Epidemiology There are differing frequencies of both benign...

Point-of-care ultrasound (curriculum)

The point-of-care ultrasound (PoCUS) curriculum is one of our curriculum articles and aims to be a collection of articles that represent the core applications of ultrasonography in a point-of-care setting. Point-of-care ultrasound refers to ultrasonography which may be simultaneously performed,...

Selective internal radiation therapy

Selective internal radiation therapy (SIRT), also known as hepatic radioembolization, is a relatively new and developing modality for treating non-resectable liver tumors. The procedure consists of a transcatheter injection of radioactive particles via the hepatic artery.  It is generally consi...

Situs inversus

Situs inversus, (rare plural: sitūs inversi) short form of the Latin “situs inversus viscerum”, is a term used to describe the inverted position of chest and abdominal organs. It is called situs inversus totalis when there is a total transposition of abdominal and thoracic viscera (mirror image ...

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