Assessment of Quality Control Uniformity & linearity of SPECT Gamma Camera using Image Processing
Journal Title: Scholars Journal of Applied Medical Sciences - Year 2017, Vol 5, Issue 7
Abstract
Abstract:Assessment of uniformity to SPECT gamma camera using developing Algorithm via image processing procedure, in this study, separate algorithm was developed to quantify the linearity and uniformity (integral, and differential) using Modulation Transfer Function (MTF). The data of were collected from Royal CareInternational Hospital RCIH and Radiation and Isotope Center of Khartoum RICK in Nuclear Medicine Departments in the period from 2015 to 2017; images of QC test were taken from SPECT gamma camera as DICOM format to be suitable for Interactive Data Language (IDL) software to quantify the linearity and uniformity. The result showed that the uniformity for useful central field of view for integral uniformity 2.97%. While row differential uniformity 1.96% and column differential uniformity 1.55% similar to build in routine, and the linearity showed that for vertical location the variation from the original location of the line it was 0.02 mm which indicates that almost the point’s falls in the line with a correlation coefficient of 0.998. In conclusion, the developed algorithm can be used to assess all gamma camera QC image for uniformity and linearity regardless of the machine brand objectively. Keywords:Uniformity, Linearity, SPECT, Image Processing. Abstract:Assessment of uniformity to SPECT gamma camera using developing Algorithm via image processing procedure, in this study, separate algorithm was developed to quantify the linearity and uniformity (integral, and differential) using Modulation Transfer Function (MTF). The data of were collected from Royal CareInternational Hospital RCIH and Radiation and Isotope Center of Khartoum RICK in Nuclear Medicine Departments in the period from 2015 to 2017; images of QC test were taken from SPECT gamma camera as DICOM format to be suitable for Interactive Data Language (IDL) software to quantify the linearity and uniformity. The result showed that the uniformity for useful central field of view for integral uniformity 2.97%. While row differential uniformity 1.96% and column differential uniformity 1.55% similar to build in routine, and the linearity showed that for vertical location the variation from the original location of the line it was 0.02 mm which indicates that almost the point’s falls in the line with a correlation coefficient of 0.998. In conclusion, the developed algorithm can be used to assess all gamma camera QC image for uniformity and linearity regardless of the machine brand objectively. Keywords:Uniformity, Linearity, SPECT, Image Processing.
Authors and Affiliations
Einas M. Ahmed, Wadah Ali
Keywords
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