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

doi:10.1109/NSSMIC.2016.8069499

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

Department of Bio-convergence Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

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 language	English
Title of host publication	2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Volume	2017-January
ISBN (Electronic)	9781509016426
DOIs	https://doi.org/10.1109/NSSMIC.2016.8069499
Publication status	Published - 2017 Oct 16
Event	2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 - Strasbourg, France Duration: 2016 Oct 29 → 2016 Nov 6

Other

Other	2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
Country/Territory	France
City	Strasbourg
Period	16/10/29 → 16/11/6

ASJC Scopus subject areas

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

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10.1109/NSSMIC.2016.8069499

Cite this

Cha, H., Jung, Y. J., Min, E., Bae, S., Ko, M., Kim, K. M., 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). Article 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 et al.
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 proceeding › Conference 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 doi: 10.1109/NSSMIC.2016.8069499

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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.",

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AB - 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.

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Development of a prototype SPECT system using a variable pinhole collimator

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