Automated Hepatic Volumetry for Living Related Liver Transplantation At Multisection CT

Abstract

The automated method reduced the time required for volumetry of the liver and provided acceptable measurements.

Fast and accurate liver volumetry prior to hepatectomy

“…Others already showed that CT based auto-segmentation of the TLV was also possible with Windows 4.4 framework ® , 8 Philips Intellispace Portal ® , 9 Voxar ® , 12 and CAD technologies ® . 13 Only two studies actually compared manual with automated volumetry with generally good correlations. 8,13 These studies were done on liver transplant patients, and only total liver volumetry was performed.…”

“…13 Only two studies actually compared manual with automated volumetry with generally good correlations. 8,13 These studies were done on liver transplant patients, and only total liver volumetry was performed. To our knowledge the present study is the first to not only test total liver volumetry but also future remnant liver volumetry and determination of the remnant liver volume percentage.…”

“…4,6 With specialised software, auto-segmentation of organs is possible. [8][9][10][11][12][13][14] However, CT-based automated segmentation of the liver is challenging because organs with comparable density surround the liver. Automated future remnant liver volumetric analysis has not yet been validated by comparing it with manual slice-by-slice drawing of contours.…”

Simple linear measurements of the normal liver: interobserver agreement and correlation with hepatic volume on MRI

“…Comprehensive US and radionuclide studies has been done to assess liver size, limited by poor resolution, body habitus, respiratory movements, field of view, poor acoustic window and observer dependency [5,[12][13][14][15] Cadaver studies have determined the reliability of sonographic measurement of the liver in the right MCL plane as an indicator of liver size [16,17], but we are not aware of any criteria to define the liver size by linear measurements from CT or MRI. Measuring hepatic volume may be time consuming and software dependent.…”

Comparison of liver volumetry on contrast‐enhanced CT images: one semiautomatic and two automatic approaches

“…Some studies on volumetry methods have been conducted in recent years. Nakayama et al (11) compared automated with manual liver volumetry and found that there was no significant difference ($p=0.407$); however, they found that automatic liver volumetry was more difficult to perform in severely damaged livers than healthy livers. Linguraru et al (9) compared normalized probabilistic atlas segmentation with manual volumetry in 77 normal cases and 71 hepatomegaly cases; the automatic liver volumetry validated was accurate, but there were no cases with space‐occupying lesions or distinct appearance differences to compare with the normal datasets.…”