Document Type

Article

Publication Date

Spring 4-2010

Comments

This article has been peer reviewed. It is the authors' final version prior to publication in Clinical Radiology Volume 65, Issue 4, April 2010, Pages 315-318. The published version is available at DOI: doi:10.1016/j.crad.2009.09.016. Copyright © Elsevier Inc.

Abstract

OBJECTIVE. To retrospectively evaluate interobserver agreement for 4 manually determined linear hepatic measurements on magnetic resonance imaging (MRI) and correlation of these linear measurements with hepatic volume.

MATERIALS AND METHODS. Hepatic linear measurements: midhepatic point craniocaudad (MHP CC), maximum CC to liver tip (Max CC), maximum transverse and MHP anteroposterior (AP) dimensions were performed on 116 patients without liver disease who had 1.5 T MR imaging of the abdomen.Linear measurements: MHP CC, Max CC, maximum transverse, MHP AP dimensions and products of CC with MHP AP dimension were correlated with hepatic volumes. Correlation analysis (Pearson product moment correlation), Student t test were used for statistical evaluation. Interobserver measurement

reliability was evaluated by using intraclass correlation coefficients (ICC).

RESULTS. Correlation between hepatic volume and MHP CC, Max CC, MHP AP and maximum transverse dimension were 0.44, 0.51, 0.53 (p<0.0001) and 0.15 (p=0.09). Correlation between hepatic volume and product of MHP CC with MHP AP dimension was 0.78 (p<0.0001) and product of Max CC with MHP AP dimension was 0.68 (p<0.0001). There was excellent interobserver agreement between readers for all linear measurements (ICC range 0.89 to 0.95).

CONCLUSION. Liver measurements (MHP CC, Max CC and MHP AP) and their products: MHP CC by MHP AP or Max CC by MHP AP correlated well with hepatic volume. Linear measurements and their products are reliable indicators of liver size and can be easily used in clinical radiology practice.