By Shahid M. Hussain, Michael F. Sorrell
This booklet offers a realistic strategy for MR imaging of the focal and diffuse liver lesions. Its distinct structure relies on cutting-edge MR imaging sequences, computer-generated drawings, concise determine captions, proper and systematic (differential) diagnostic details, fresh literature references, and sufferer administration chances. MR imaging findings are correlated to ultrasound, computed tomography, and pathology while applicable. This ebook will significantly gain all execs and concerned with imaging, prognosis, and remedy of focal and diffuse liver lesions.
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Extra info for Liver MRI: Correlation with other Imaging Modalities and Histopathology
MR imaging should be the modality of choice because it can make a distinction between very small metastases and benign liver lesions such as small cysts and hemangiomas. In addition, the ability of MR imaging to detect and characterize diffuse parenchymal liver disease is unparalleled. MR Imaging Findings At MR imaging, the individual lesions in the setting of multiple liver metastases will often demonstrate a typical MR imaging appearance as described in the previous chapter: the lesions have a targetlike appearance on T2-weighted images and show irregular continuous ring-shaped enhancement in the arterial phase (see Chap.
Note a wedge-shaped enhancement (*). D Axial delayed phase image (DEL): Hemangiomas retain contrast. E Axial flow-sensitive black-blood EPI image (BBEPI): The exophytic hemangiomas show central darkening due to flow (bulk motion), which is confirmatory for exophytic hemangiomas (arrow). F Axial opposed-phase image (T1 opposed-phase): The liver shows mild diffuse steatosis. G Coronal and H axial SSTSE images (SSTSE): Due to the dark liver, hemangiomas appear more like high fluid-containing structures such as cysts (compare to the fluid in the gallbladder, arrow) Fig.
Radiographics 20:379 – 397 2. Outwater EK, Ito K, Siegelman E, et al. (1997) Rapidly enhancing hepatic hemangiomas at MRI: distinction from malignancies with T2-weighted images. JMRI 7:1033 – 1039 3. Jeong MG, Yu JS, Kim KW (2000) Hepatic cavernous hemangioma: temporal peritumoral enhancement during multiphasic dynamic MR imaging. Radiology 216:692 – 697 12 Hemangioma V – Atypical, Flash-Filling with Perilesional Enhancement 25 Fig. 1. Hemangioma, flash-filling with perilesional enhancement, drawings.