[Research on relationship between preoperative CT volumetry of donor' s liver and intraoperative weight measurement of liver for living related liver transplantation].

OBJECTIVE

To investigate the relationship between the donor liver volume calculated by 16-slice multi-detector-row CT before living related liver transplantation (LRLT) and the hepatic weight measured during the operation, and try to get an equation to express the relation of associating volume with weight of transplanted liver.

METHODS

21 donors of LRLT were enrolled to undergo 16-slice CT scanning at four enhancement phases. The imaging data at the hepatic venous phase was used for whole and partial liver volumetry processed or measured on a dedicated image post-processing workstation. The resected part of donor liver was weighed during the operation. Statistical analysis was used to test the relationship between the CT-measured liver volume and the actual weight of resected liver part, and the relationship was expressed by scatter graph and linear equation.

RESULTS

The mean of liver volumes calculated by CT before operation was (699. 47 +/- 140. 18) mL, the mean weight of donated livers measured during operation was (532. 14+/- 98. 01) g, which were positively correlated (P< 0. 001), and could be expressed in the equation W(g)=0. 593XV (mL)+117. 229.

CONCLUSION

The correlation equation between the donor liver volume calculated by CT preoperatively and the grafted liver weight measured during operation can be used to accurately estimate the desired liver mass for LRLT, which is very helpful for donor selection and preoperative planning.