This is especially important if the underlying liver parenchyma is abnormal or has impaired functional capacity.

In this context, repeated liver resections, increasingly extensive resections, and resections after aggressive chemotherapy are likely to lead to more patients with small (functional) remnant livers and hence more risk of postoperative liver failure.Īs we and others have shown before, liver volumes can be calculated accurately from CT or magnetic resonance imaging (MRI) scans. The liberal use of existing professional image-processing software is often limited by costs, access, flexibility, lack of radiology staff, and specific hardware requirements.

In addition, the intended operation and the potential surgical scenarios should be known to the investigator to predict the remnant liver volume accurately, which requires the expertise of a liver surgeon. The Digital Imaging and Communications in Medicine (DICOM) standard has enabled volumetry on a stand-alone or network-attached personal computer (PC) remote from the radiology hardware (CT or MRI scanner). In 2007, our group conducted a retrospective study and proposed a method to perform liver volumetry with ImageJ, which is a free open-source image analysis software package developed at the National Institutes of Health (NIH). In 2010, our group assessed the accuracy of OsiriX ® for CT volumetry of the liver. OsiriX ® is a more user-friendly, freely downloadable open source image analysis software package for the Apple Mac OS. The accuracy of CT volumetry of the liver resection specimen prospectively prior to surgery has not yet been assessed for either of these software packages. Therefore, the objective of the present study was to compare ImageJ and OsiriX ® when performing prospective CT volumetric analysis of the liver on a PC in patients undergoing major liver resection. The study also planned to compare the prospective measurements of ImageJ and OsiriX ® to those of CT volumetry performed by a radiologist using classic radiology software (iNtuition ®) linked to a CT scanner system.

Osirix lite vs md