Performance Observation of Gabor Filter for Wall Thickness Measurement of Human Colon Based on Ultrasound Image
Keywords:
Colon, irritable bowel disease, non-invasive, wall-thickness and cross-sectional area, ultrasound image processing.Abstract
Ultrasound-based imaging technique becomes a
promising way to acquire normal or abnormal condition of
most human organ since it provides several advantages
compared to other imaging modalities. This study used
ultrasound imaging modality to acquire colon images and
determine the wall-thickness of the colon. Wall thickness is
important parameters for evaluating the condition of colon,
especially for the people with irritable bowel condition. Three
different parts of colon were scanned during this study;
ascending part, transverse part and descending part. Manual
measurement of cross-sectional area and wall-thickness of
colon was done by the radiologist during image acquisition
process. In order to obtain clear image and ensure
measurement accuracy, several steps of image processing;
pre-processing, filtering, cropping, and textural segmenting
were done. The results showed that the result from the
measurement after image processing relatively closed to that of
the manual, with the value of standard deviation of 0.02. The
output from this study can be used for further study in
assessment of various colon diseases that based on the
cross-sectional area and the wall thickness of the colon like
inflammatory bowel disease (IBD).
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