Kyoung Won Kim MD, Presenter: Nothing to Disclose

Jeongjin Lee MS, Abstract Co-Author: Nothing to Disclose

Ho Lee, Abstract Co-Author: Nothing to Disclose

Woo Kyoung Jeong MD, Abstract Co-Author: Nothing to Disclose

Hyung Jin Won MD, Abstract Co-Author: Nothing to Disclose

Yong Moon Shin MD, Abstract Co-Author: Nothing to Disclose

Sung Gyu Lee MD, Abstract Co-Author: Nothing to Disclose

To determine relative accuracy of automated blood-free to blood-filled CT volumetry for estimation of right-lobe weight in living donor liver transplantation.

This retrospective study was approved by our institutional review board; informed consent was waived. Between October 2008 and April 2009, 88 live liver donors(54 men, 34 women; mean age,26.1years±6.9) who underwent CT and had their right-lobes were procured in our institution were included in this study. Automated measurement of blood-filled and blood-free volumes of right-lobe was performed using 16-row MDCT obtained with 5-mm intervals. Actual liver weight was measured blood-free, intraoperatively. Percentage blood volume was calculated as blood-filled volume–blood-free volume/blood-filled volume•100. Pearson tests were performed to determine correlation coefficients between blood-filled volume/1.22 or blood-free volume and weight. Percentage deviation and percentage absolute deviation of blood-free volume from weight were compared with those of blood-filled volume/1.22 by paired t-test or Wilcoxon rank sum test. Regression analysis was performed between blood-free volume and weight.

Mean blood-filled and blood-free volumes and weight were 789.0mL±126.4, 713.9mL±114.4, and 717.8g±110.4. Percentage blood volume varied 6.5%-19.8% (mean,9.5%). Compared with weight, correlation coefficient was slightly higher with blood-free volume(r=0.9140) than with blood-filled volume/1.22(r=0.8909). Mean percentage deviation and percentage absolute deviation were significantly smaller with blood-free volume(-0.4%±6.3,5.0%±3.8) than with blood-filled volume/1.22(-9.8%±6.5,10.2%±7.3)(P<.0001,<.0001). Equation between blood-free volume and weight was as follow: Weight=(0.8815•Blood-free volume)+88.5117(R2,0.8355; P< .001).

On automated CT volumetry in live liver donors, percentage blood volume varies. Blood-free volume is more accurate than blood-filled volume/1.22 in estimation of liver weight.

Blood-free CT volumetry correlates better with liver graft weight than the standard blood-filled technique in donor candidates for living donor live transplantation.

Kim, K, Lee, J, Lee, H, Jeong, W, Won, H, Shin, Y, Lee, S, Estimated Blood-free Weight of Right Hepatic Lobe for Living Donor Liver Transplantation: Accuracy of Automated Blood-free CT Volumetry‚Preliminary Results.  Radiological Society of North America 2010 Scientific Assembly and Annual Meeting, November 28 - December 3, 2010 ,Chicago IL. http://archive.rsna.org/2010/9014798.html