Simple linear measurements of the normal liver: Interobserver agreement and correlation with hepatic volume on MRI
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.
Verma, Sachit K.; McClure, Kristen; Parker, Laurence; Mitchell, Donald G.; Verma, Manisha; and Bergin, Diane, "Simple linear measurements of the normal liver: Interobserver agreement and correlation with hepatic volume on MRI" (2010). Department of Radiology Faculty Papers. Paper 8.
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.