2024年12月20日 · With appropriate imaging, such as multiphasic CT or dynamic MRI, the diagnosis can be made in high-risk patients, e.g. with hepatitis B and/or cirrhosis, using characteristic contrast enhancement patterns, without the need for histological confirmation 28-31.

Hepatocellular carcinoma (HCC) is the most common primary liver cancer. Imaging is important for establishing a diagnosis of HCC. Several imaging modalities including ultrasonography (US), computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET) and angiography are used in evaluating patients with chronic ...

T1-weighted MRI of the liver demonstrates higher metastases–liver contrast on hepatocyte-specific contrast agent (mangafodipir) enhanced images (a) compared to the pre-contrast images (b). Note that an additional lesion is seen on post-contrast image in segment IV.

MR imaging with gadolinium chelates offers an accurate non-radiation based imaging test for detection of liver metastases. Liver specific MR contrast agents (hepatobiliary and reticuloendothelial agents) offer greater lesion-to-liver contrast than the conventional extracellular agents (gadolinium chelates).

TCIA is a service which de-identifies and hosts a large archive of medical images of cancer accessible for public download. The data are organized as “collections”; typically patients’ imaging related by a common disease (e.g. lung cancer), image modality or type (MRI, CT, digital histopathology, etc) or research focus.

The diagnostic information provided by MRI and its current place in the imaging work-up of patients with known or suspected hepatic tumors are discussed in three main clinical scenarios: (a) characterization of incidental liver lesions; (b) detection and characterization of hepatocellular carcinoma (HCC) in cirrhosis; and (c) detection and ...

2019年6月23日 · On MRI, ICAC appears as a large mass of decreased signal intensity on T1-weighted images and increased signal on T2-weighted images. A central area of hypointensity is seen in some cases on T2-weighted images and corresponds to the central scar.

2017年3月4日 · Our protocol for imaging the cirrhotic liver includes T1-weighted gradient-recalled echo (GRE) in-phase and opposed-phase sequences, a moderately T2-weighted FSE sequence with an echo time of 80–90 msec, diffusion weighted imaging (DWI) and multiphase T1-weighted dynamic gadolinium-enhanced sequences.

Computed tomography (CT) and magnetic resonance imaging (MRI) are commonly used modalities for the imaging based diagnosis and staging of hepatocellular carcinoma (HCC). The Liver Imaging Reporting and Data System (LI-RADS) was initially released in 2011 in an effort to standardize the interpretation and reporting of these studies in patients ...

2018年4月30日 · Figure 5c: MR Images in 39-year-old man with liver cirrhosis and multiple cirrhotic nodules, some of which resemble dysplastic nodules at imaging. (a) Transverse T1-weighted 3D GRE in-phase image (6.6/4.4; flip angle, 12°) and (b) opposed-phase image (6.6/2.1; flip angle, 12°) show multiple iso- or hyperintense nodules in both lobes of liver.