الفهرس 
Radiological Anatomy of the liverOnly 14 pages are availabe for public view
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Abstract
Multidetector CT is a technologic advance that permits high-speed and high-resolution helical imaging of the entire liver volume during a single breath-hold. Rapid helical data acquisition has resulted in increased body coverage, decreased motion artifact, better use of contrast bolus, and multiphase organ scanning that allows accurate vascular mapping.
MDCT Imaging is performed to detect liver parenchymal abnormalities that may preclude living-donor transplantation.
MDCT provides Accurate size matching of the donor and recipient (volumetric evaluation) which is essential to ensure that functional hepatic mass is available to both sustain metabolic demands and to permit volume regeneration. Inadequate graft size leads to ‘‘small-for-size’’ syndrome, a clinical entity that encompasses graft dysfunction, liver failure, and even death.
Accurate assessment of the biliary anatomy is important as failure to recognize even minor intrahepatic branches crossing the dissection line can result in severe postoperative leaks and other complications , and MDCT cholangiography with additional use of intravenous cholangiographic contrast media reveals satisfactory visualization of second-order biliary branches in living liver donor candidates.
Multidetector CT is an excellent tool in preoperative imaging; the main aim is to obtain the road map for vascular arterial and venous structures. Despite advances in hepatic surgical techniques, particularly microvascular reconstruction techniques, vascular complications still have an important role in morbidity and mortality.
To preserve the life of a graft, there must be sufficient arterial blood flow. Thus, proper reconstruction of this artery is of utmost importance. Evaluation before transplantation is performed by multidetector computed tomographic angiography (CTA) rather than by conventional angiography.
The 3D CT angiograms provide a useful overview, nicely depict most variants, and illustrate the relationship of branch points to each other. The 2D images are useful for assessment of small-diameter arterial variants that may not be apparent on the 3D images.
MDCT easily can delineate portal venous anatomy and accurately identify normal venous variants. Variations in portal venous anatomy are common and may complicate hepatic resection and transplantation.
MDCT is the most important tool in the assessment of potential donors, identifying the hepatic venous anatomy is a fundamental step because it determines the hepatectomy plane that runs 1 cm to the right of the middle hepatic vein (MHV) .