Development of a prototype SPECT system using a variable pinhole collimator

Hyemi Cha, Young Jun Jung, Eungi Min, Seungbin Bae, Mincheol Ko, Kyeong Min Kim, Kisung Lee, Hakjae Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We designed a novel single-photon emission computed tomography (SPECT) system with a variable pinhole (VP) collimator for obtaining high-sensitivity and high-spatial resolution imaging of a region of interest (ROI). Extending the capabilities of conventional SPECT systems, this novel SPECT system with a VP collimator can adjust its driving parameters, such as a collimator diameter, acceptance angle, and distances between the ROI, collimator, and detector at different rotation angles. Previously, we simulated a VP collimator and demonstrated the superiority of the VP SPECT system in terms of its sensitivity and spatial resolution. Based on these previous results, we developed a prototype SPECT system for performance evaluation of a VP collimator. The collimator was made from 99.9% pure tungsten layers, with 16 holes of different diameters. The area of the CsI(Tl) scintillator was 45.7 × 45.7 mm2 (51 × 51 pixels), with pixel dimensions of 0.7 × 0.7 × 5 mm2. The multi-pixel photon counter was tiled into a 2 × 2 configuration with dimensions of 52 × 52 mm2. The collimator, detector, and gantry of this SPECT system were independently controlled. We acquired initial reconstructed images from a point source (Co-57) and an ultra-micro phantom (Tc-99m). The point source and the phantom were clearly resolved, demonstrating satisfactory detector response, signal processing, and imaging processing capabilities. The 1.35mm phantom was also clearly resolved in the ultra-micro phantom.

Original languageEnglish
Title of host publication2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2017-January
ISBN (Electronic)9781509016426
DOIs
Publication statusPublished - 2017 Oct 16
Event2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 - Strasbourg, France
Duration: 2016 Oct 292016 Nov 6

Other

Other2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
CountryFrance
CityStrasbourg
Period16/10/2916/11/6

Fingerprint

Single photon emission computed tomography
pinholes
collimators
Single-Photon Emission-Computed Tomography
tomography
prototypes
photons
Pixels
Detectors
pixels
point sources
Imaging techniques
detectors
Tungsten
spatial resolution
Photons
gantry cranes
Phosphors
sensitivity
Signal processing

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Instrumentation
  • Nuclear and High Energy Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Cha, H., Jung, Y. J., Min, E., Bae, S., Ko, M., Kim, K. M., ... Lee, H. (2017). Development of a prototype SPECT system using a variable pinhole collimator. In 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 (Vol. 2017-January). [8069499] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2016.8069499

Development of a prototype SPECT system using a variable pinhole collimator. / Cha, Hyemi; Jung, Young Jun; Min, Eungi; Bae, Seungbin; Ko, Mincheol; Kim, Kyeong Min; Lee, Kisung; Lee, Hakjae.

2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017. 8069499.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cha, H, Jung, YJ, Min, E, Bae, S, Ko, M, Kim, KM, Lee, K & Lee, H 2017, Development of a prototype SPECT system using a variable pinhole collimator. in 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. vol. 2017-January, 8069499, Institute of Electrical and Electronics Engineers Inc., 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016, Strasbourg, France, 16/10/29. https://doi.org/10.1109/NSSMIC.2016.8069499
Cha H, Jung YJ, Min E, Bae S, Ko M, Kim KM et al. Development of a prototype SPECT system using a variable pinhole collimator. In 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Vol. 2017-January. Institute of Electrical and Electronics Engineers Inc. 2017. 8069499 https://doi.org/10.1109/NSSMIC.2016.8069499
Cha, Hyemi ; Jung, Young Jun ; Min, Eungi ; Bae, Seungbin ; Ko, Mincheol ; Kim, Kyeong Min ; Lee, Kisung ; Lee, Hakjae. / Development of a prototype SPECT system using a variable pinhole collimator. 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017.
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