Imaging Evaluation of Living Liver Donor Candidates: Techniques, Protocols, and Anatomy
The need for liver transplants is increasing because the prevalence of liver diseases and the indications for transplants are growing. In response to the shortage of grafts from deceased donors, more transplants are being performed worldwide with grafts from living donors. Radiologic evaluation is a...
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Veröffentlicht in: | Radiographics 2021-10, Vol.41 (6), p.1572-1591 |
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Zusammenfassung: | The need for liver transplants is increasing because the prevalence of liver
diseases and the indications for transplants are growing. In response to the
shortage of grafts from deceased donors, more transplants are being performed
worldwide with grafts from living donors. Radiologic evaluation is an integral
component in the assessment of donor candidates to ensure their eligibility and
to choose the most appropriate surgical approach. MRI is the preferred modality
for evaluation of the liver parenchyma and biliary tree. In most centers, a
combination of MRI and CT is used to take advantage of the higher spatial
resolution of CT for evaluation of arteries. However, MRI-only assessment is
feasible. In addition to assessment of the liver parenchyma for abnormalities
such as steatosis, a detailed evaluation of the hepatic vascular and biliary
system for pertinent anatomic variants is crucial, because these variants can
affect surgical techniques and outcomes in both recipients and donors. In this
pictorial article, after a brief review of the most common surgical techniques
and postsurgical liver anatomy, the biliary and vascular anatomy are discussed,
with specific attention paid to the variants that are pertinent to this surgical
procedure. The roles of liver segmentation and volumetric assessment and current
imaging techniques and protocols are also discussed.
Online supplemental material is available for this
article.
©
RSNA, 2021
This article was updated with funder information on September 7, 2022. |
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ISSN: | 0271-5333 1527-1323 |
DOI: | 10.1148/rg.2021210012 |