Accession Number:

ADA411985

Title:

Assessment of Manual Segmentation of Magnetic Resonance Images of Skeletal Muscles

Descriptive Note:

Conference paper

Corporate Author:

MONTREAL UNIV (QUEBEC) INST DE GENIE BIOMEDICAL

Report Date:

2001-10-25

Pagination or Media Count:

4.0

Abstract:

Technical considerations related to the manual detection of muscles boundaries from magnetic resonance images MRI are evaluated. Two commercial image processing software programs were used by two operators to obtain measurements on MRI from a phantom and from muscles of the upper limb and trunk. Optimization of MRI acquisition sequences, image resolution, image contrast, and sub-sampling effect were also experimented. No significant intra- and inter-operator variation was observed and results obtained from both softwares were similar. Generally, sub-millimetric slide thickness offers better definition but lower contrast than thicker slices. Differences in estimated length, surface and volume of upper limb and back muscles were small for slice thickness varying between 1.5 and 4 mm. Accuracy of manual segmentation of muscles with MRI was found more dependent on the contrast than on the human factors.

Subject Categories:

  • Medicine and Medical Research
  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE