MR Imaging of the Urinary Bladder
MR imaging is the modality of choice for accurate local staging of bladder cancer. In addition, bladder MR imaging helps detect lymph node involvement, and in conjunction with computed tomography,…
MR Imaging of Benign and Malignant Biliary Conditions
MR imaging is a noninvasive, radiation-free imaging method for evaluation of the biliary system. Continued advancements in MR imaging system hardware and sequence design, coupled with novel gadolinium chelate agents,…
Presurgical Planning for Hepatobiliary Malignancies
There are many considerations in the evaluation of liver malignancy before planned surgical treatment. This article focuses on interpretation of MR imaging of the liver for surgical treatment planning of…
Magnetic Resonance Elastography of Liver
Magnetic resonance elastography (MRE) assesses tissue stiffness in vivo by imaging propagating shear waves through the tissues and processing the wave information. MRE is a robust technology with excellent technical success;…
Perfusion Imaging in Liver MRI
Liver perfusion magnetic resonance (MR) imaging is currently being actively investigated as a functional imaging technique that provides physiologic information on the microcirculation and microenvironment of liver tumors and the…
Diffusion-Weighted Imaging of the Liver
Diffusion-weighted imaging (DWI) is a technique that assesses the cellularity, tortuosity of the extracellular/extravascular space, and cell membrane density based on differences in water proton mobility in tissues. The strength…
Quantification of Hepatic Fat and Iron with Magnetic Resonance Imaging
Magnetic resonance (MR) imaging is a robust, noninvasive tool with the ability to perform a wide array of diagnostic functions within the abdomen. Over the last decade, there has been…
Magnetic Resonance Imaging of the Liver After Loco-Regional and Systemic Therapy
Assessment of tumor response is crucial in determining the effectiveness of loco-regional and systemic therapy, and for determining the need for subsequent treatment. The ultimate goal is to improve patient’s…
Understanding LI-RADS
The Liver Imaging–Reporting and Data System (LI-RADS) is a comprehensive system for standardized interpretation and reporting of computed tomography and magnetic resonance examinations performed in patients at risk for hepatocellular…
MR Imaging in Cirrhosis and Hepatocellular Carcinoma
Hepatocellular carcinoma (HCC) is the fastest growing cause of cancer-related death in the United States. Cirrhosis is the most important risk factor for HCC. Dynamic contrast-enhanced magnetic resonance (MR) imaging…
