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A Novel Technique to Improve the Resolution and Contrast of Planar Nuclear Medicine Imaging

Raichur, Rohan

Abstract Details

2008, Master of Science in Engineering, University of Akron, Biomedical Engineering.
Nuclear medicine images have limited spatial resolution because of the limitations in the radiation detector and the associated electronics. Due to these limitations, the image of a point source of radiation is blurred. The degree of this blurring is called the point spread function of a gamma camera, the imaging device used in nuclear medicine. The aim of this study is to evaluate a technique to increase the spatial resolution and contrast by improving the point spread function of the system. The basic idea of the proposed technique is to restrict radiation so that overlapping point spreads due to adjacent point sources could be isolated. This was achieved by using a special lead mask, having a particular pattern of apertures, with the existing technique. The new technique was implemented in two variations by using special lead masks with different sizes, shapes and patterns of apertures in order to investigate the degree of improvement in the spatial resolution. The images obtained with the proposed technique were compared to those obtained with the conventional technique. Qualitative comparisons were made by visually inspecting the images obtained by the two techniques while quantitative comparisons were made by statistically testing their modulation transfer functions for significant differences. Both the comparisons indicated that the proposed technique was successful and gave images with increased spatial resolution and contrast.
Dale Mugler, PhD (Advisor)
Anthony Passalaqua, MD (Advisor)
68 p.

Recommended Citations

Citations

  • Raichur, R. (2008). A Novel Technique to Improve the Resolution and Contrast of Planar Nuclear Medicine Imaging [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1226955205

    APA Style (7th edition)

  • Raichur, Rohan. A Novel Technique to Improve the Resolution and Contrast of Planar Nuclear Medicine Imaging. 2008. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1226955205.

    MLA Style (8th edition)

  • Raichur, Rohan. "A Novel Technique to Improve the Resolution and Contrast of Planar Nuclear Medicine Imaging." Master's thesis, University of Akron, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1226955205

    Chicago Manual of Style (17th edition)