Comparison of two volumetric techniques for estimating liver volume using magnetic resonance imaging

• DOI: 10.1002/jmri.10109
• Publication Date: 2002-08-25T23:24:15Z
• Authors: Michael Mazonakis; John Damilakis; Thomas Maris; Panos Prassopoulos; Nicholas Gourtsoy...
• Keywords: Repeatability; Stereology

Abstract Purpose To compare the conventional technique of manual planimetry with point counting for estimating liver volume from magnetic resonance imaging (MRI) data. Materials and Methods This study comprised abdominal MR examinations 38 consecutive patients. Evaluation images showed that size appeared normal in 27 patients increased 11. Liver was estimated using techniques counting. Both were used combination Cavalieri method modern design stereology. A systematic slice sampling procedure performed to estimate volumes both volumetric techniques. The optimized by altering spacing grid. agreement between two found. Measurement repeatability also evaluated. Results allowed same degree optimization through section sampling. application a 2.5 cm reduced time measurement factor 3.5 relation needed planimetry. An excellent observed mean differences (±SD) 2.4 ± 41.6 3 8.5 49.8 presenting sizes, respectively. highly reproducible. Conclusion could be considered more efficient approach than MRI, due its speed simplicity. J. Magn. Reson. Imaging 2002;15:557–563. © 2002 Wiley‐Liss, Inc.