Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Effect of compensation for scattering angular uncertainty in analytical Compton camera reconstruction.

M Hirasawa1, T Tomitani

  • 1Department of Medical Imaging, National Institute of Radiological Sciences, 9-1, Anagawa-4, Inage-ku, Chiba 263-8555, Japan. hirasawa@nirs.go.jp

Physics in Medicine and Biology
|June 25, 2004
PubMed
Summary

This study analyzes a Compton camera algorithm that compensates for scattering angle uncertainty. The compensation improves spatial resolution but impacts statistical noise, with implications for camera design and image quality.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Thermosensing mechanisms and their impairment by high-fat diet in orexin neurons.

Neuroscience·2016
Same author

Streptococcus oricebi sp. nov., isolated from the oral cavity of tufted capuchin.

International journal of systematic and evolutionary microbiology·2015
Same author

Presynaptic G Protein-Coupled Receptors Differentially Modulate Spontaneous Glutamate Release in the Supraoptic Nucleus.

Journal of neuroendocrinology·2015
Same author

Cyclin-dependent kinase 5 is required for normal cerebellar development.

Molecular and cellular neurosciences·2012
Same author

Characterization of a new serotype g isolate of Aggregatibacter actinomycetemcomitans.

Molecular oral microbiology·2010
Same author

Genes responsible for dextran-dependent aggregation of Streptococcus sobrinus strain 6715.

Oral microbiology and immunology·2009

Area of Science:

  • Medical Imaging
  • Nuclear Physics
  • Image Reconstruction

Background:

  • Compton cameras measure gamma-ray scattering angles, but uncertainty increases at lower energies.
  • This scattering uncertainty degrades spatial resolution in reconstructed images.
  • A revised analytical reconstruction algorithm was developed to compensate for this uncertainty.

Purpose of the Study:

  • To analyze the impact of the compensation algorithm on spatial resolution, statistical noise, and image quality in Compton cameras.
  • To investigate the relationship between statistical noise and key parameters like incident gamma-ray energy, spatial resolution, and event numbers.

Main Methods:

  • Evaluated spatial resolution using the Full Width at Half Maximum (FWHM) of noise-free point source reconstructions.

Related Experiment Videos

  • Assessed statistical noise by measuring the relative standard deviation of reconstructions from isotropic sources.
  • Quantified image quality through the roughness of reconstructed phantom images.

    • Main Results:

    • The compensation algorithm effectively improved spatial resolution.
    • An expected enhancement in statistical noise was observed with compensation.
    • Detailed relationships between statistical noise and incident energy, spatial resolution, and event count were established.

    Conclusions:

    • The compensation algorithm's effects on spatial resolution and noise are significant.
    • Understanding the interplay between noise and parameters is crucial for designing high-quality Compton cameras.
    • The findings guide the development of Compton cameras for improved diagnostic imaging and useful output.