Keywords:
Computer applications, Computer Applications-General
Authors:
R. Manniesing, M. Koek, D. Goei, J. Hermans, W. J. Niessen, D. Poldermans; Rotterdam/NL
DOI:
10.1594/ecr2010/C-1115
Methods and Materials
A three step approach is adopted: First, the patient body is separated from the background and table by applying morphological operators. Then a 3D mesh is deformed which is steered by image intensity and gradient information to delineate the abdominal region. This region is defined by the pelvis, diaphragm and the muscle layer of the abdominal wall. Finally, the subcutaneous and visceral fat are separated by thresholding using the Hounsfield units inside and outside the abdominal region.
The method is applied to CTA scans of 14 patients which were scheduled for noncardiac vascular surgery. Weight, BMI index and the level of triglyceride in blood of each patient were acquired. Fat volumes were measured using the proposed method.