Universiti Teknologi Malaysia Institutional Repository

A statistical method for comparing chest radiograph images in MTB patients

Mohd. Noor, Norliza and Mohd. Rijal, Omar and Shee, Lee Teng (2006) A statistical method for comparing chest radiograph images in MTB patients. WSEAS Transaction on Signal Processing, 2 (7). pp. 1017-1023. ISSN 1790-5022

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Abstract

Digital images of chest radiograph taken at different time points may be compared to investigate the effect of treatment on mycobacterium tuberculosis (MTB) patients. One method of comparison is that of visually locating “snow-flakes� which should decrease in area or size with each subsequent image. This paper propose a more objective method; the comparison of image histograms whereby a leftward shift of the histogram indicates a positive effect of treatment. The comparison of two histograms is equivalent to either comparing the corresponding box-plots or the corresponding set of percentiles. However, before the comparison is made the images need to be registered and resized. The results of this study show that the proportion of percentiles (from histogram) can be used as an indicator of treatment effect (or patient’s progress). Further the correlations, RF2, is shown to be the best similarity measure to indicate the quality of image registration. Finally, this study also shows that a combination of registration and resizing can improve the pair-wise comparison.

Item Type:Article
Uncontrolled Keywords:chest radiograph, mycobacterium tuberculosis, image registration, resizing, correlations, box-plot
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QA Mathematics
Divisions:Electrical Engineering
ID Code:5477
Deposited By: Associate Professor Norliza Mohd Noor
Deposited On:07 May 2008 00:12
Last Modified:10 May 2011 05:07

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