Abdomen Axial 1
In magnetic resonance imaging (MRI), all signal intensity is relative; signal intensity varies depending on the type of MR sequence. High signal intensity on T1-weighted images is typically associated with fat, proteinaceous
Abdomen Axial 1
In magnetic resonance imaging (MRI), all signal intensity is relative; signal intensity varies depending on the type of MR sequence. High signal intensity on T1-weighted images is typically associated with fat, proteinaceous content, subacute hemorrhage, paramagnetic substances (e.g., melanin, gadolinium), and slow blood flow within vessels. High signal intensity on T2-weighted images is typically associated with fluid, including cerebrospinal fluid (CSF), urine, bile, gastric fluid, and enteric fluid, as well as fluid-filled lesions (cyst, cystic or necrotic tumor), hemangiomas, and fat. Low signal intensity on T1- and T2-weighted images is associated with susceptibility artifact from gas, iron, and metallic objects, as well as fibrous tissue, cortical bone, and fast blood flow within vessels.
Abdomen Axial 2
Many systems have been proposed for liver segmentation anatomy. The approach most frequently used, however, is the Couinaud system, which subdivides the liver into eight functionally independent segments (I-VIII). Portal triads, composed