Multidetector row-CT in evaluation of living renal donors.
BACKGROUND
Multidetector-row CT (MDCT) has been evolving to the standard evaluating method of potential living donor in most centers, and can provide excellent details for selecting candidates and determining surgical technique. This study aimed to assess the value of MDCT in evaluation of the anatomy of living kidney donors and to reveal the prevalence of renal vascular variations in a Chinese population.


METHODS
One hundred and four potential donors underwent MDCT and the data sets were post-processed for reformatted images with various techniques, such as maximum intensity projection (MIP), a volume-rendering technique (VR), and multiplanar reformation (MPR). Donor nephrectomies were performed on 97 candidates after MDCT evaluation with the findings during surgery constituting the standard of reference. Resulting MDCT images were compared with actual anatomy found during surgery.


RESULTS
The MDCT images accurately displayed the anatomic structure of the main renal arteries and veins as well as the upper ureters, except in one case with horseshoe kidney. The prevalence of accessory arteries revealed in images was 27.2% (28/103) and early branching was found in 12.6% (13/103). Compared with findings during surgery, the detection of accessory arteries in MDCT images was 85.7% (6/7), and the detection of larger accessory arteries (> 1.5 mm in diameter) was 100%. Detection of early branching was 100%.


CONCLUSIONS
MDCT helps accurately evaluate the renal anatomy of potential donors thus facilitating the planning of surgery.
Zhang
Ji-qing
JQ
Kidney Transplantation Program, Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China.
Hu
Xiao-peng
XP
Wang
Wei
W
Li
Xiao-bei
XB
Yin
Hang
H
Zhang
Xiao-dong
XD
D000328:Adult; D005260:Female; D006801:Humans; D016030:Kidney Transplantation / Q000000981:diagnostic imaging*; D019520:Living Donors; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult