SmartCAM: an adaptive clinical SPECT camera

Christopher Dumas; Adam Bernstein; Alonzo Espinoza; Donovan Morgan; Kevin Lewis; Matt Nipper; Harrison H. Barrett; Matthew A. Kupinski; Lars R. Furenlid

doi:10.1117/12.2030090

26 September 2013 SmartCAM: an adaptive clinical SPECT camera

Christopher Dumas, Adam Bernstein, Alonzo Espinoza, Donovan Morgan, Kevin Lewis, Matt Nipper, Harrison H. Barrett, Matthew A. Kupinski, Lars R. Furenlid

Author Affiliations +

Proceedings Volume 8853, Medical Applications of Radiation Detectors III; 885307 (2013) https://doi.org/10.1117/12.2030090
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

An adaptive pinhole aperture that fits a GE MaxiCam Single-Photon-Emission Computed Tomography (SPECT) system has been designed, built, and is undergoing testing. The purpose of an adaptive aperture is to allow the imaging system to make adjustments to the aperture while imaging data are being acquired. Our adaptive pinhole aperture can alter several imaging parameters, including field of view, resolution, sensitivity, and magnification. The dynamic nature of such an aperture allows for imaging of specific regions of interest based on initial measurements of the patient. Ideally, this mode of data collection will improve the understanding of a patient’s condition, and will facilitate better diagnosis and treatment. The aperture was constructed using aluminum and a low melting point, high-stopping-power metal alloy called Cerrobend. The aperture utilizes a rotating disk for the selection of a pinhole configuration; as the aluminum disk rotates, different pinholes move into view of the camera face and allow the passage of gamma rays through that particular pinhole. By controlling the angular position of the disk, the optical characteristics of the aperture can be modified, allowing the system to acquire data from controlled regions of interest. First testing was performed with a small radioactive source to prove the functionality of the aperture.

Citation Download Citation

Christopher Dumas, Adam Bernstein, Alonzo Espinoza, Donovan Morgan, Kevin Lewis, Matt Nipper, Harrison H. Barrett, Matthew A. Kupinski, and Lars R. Furenlid "SmartCAM: an adaptive clinical SPECT camera", Proc. SPIE 8853, Medical Applications of Radiation Detectors III, 885307 (26 September 2013); https://doi.org/10.1117/12.2030090

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KEYWORDS

Cameras

Imaging systems

Single photon emission computed tomography

Aluminum

Data acquisition

Gamma radiation

Image resolution

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