Design of a Rotational Modulation Collimator Utilizing Asymmetric Masks for the Gamma-Ray/Neutron Dual Imaging Technique

Hyun Suk Kim, Gyemin Lee, Sung-Joon Ye, Geehyun Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

1 Citation (Scopus)

Abstract

We are currently developing a dual-particle imager based on the rotational modulation collimator (RMC) technique employing Cs2LiYCl6:Ce (CLYC) detector. A symmetric mask design has been conventionally used for RMC, however, it has an intrinsic problem of not being able to distinguish two symmetric sources located with respect to the rotation axis. In the present study, we propose a new design of collimator masks to solve the artifact problem in the source location estimation imposed by the symmetric pattern of collimator masks. We used the Monte Carlo N-Particle 6.1 (MCNP6) code to obtain modulation patterns, and we applied the maximum likelihood expectation maximization (MLEM) algorithm to reconstruct radiation images from the modulation patterns. The asymmetric mask design we proposed in this paper showed enhanced performance in image reconstruction by removing intrinsic artifacts from the symmetric mask design and will be used as a fundamental design for the future development of the dual-particle RMC system.

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.
ISBN (Electronic)9781509016426
DOIs
StatePublished - 16 Oct 2017
Event2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 - Strasbourg, France
Duration: 29 Oct 20166 Nov 2016

Publication series

Name2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
Volume2017-January

Other

Other2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
CountryFrance
CityStrasbourg
Period29/10/166/11/16

Fingerprint

Gamma Rays
Neutrons
Masks
collimators
imaging techniques
Gamma rays
masks
Modulation
gamma rays
Imaging techniques
modulation
neutrons
Artifacts
artifacts
Computer-Assisted Image Processing
image reconstruction
Image reconstruction
Image sensors
Maximum likelihood
Radiation

Cite this

Kim, H. S., Lee, G., Ye, S-J., & Kim, G. (2017). Design of a Rotational Modulation Collimator Utilizing Asymmetric Masks for the Gamma-Ray/Neutron Dual Imaging Technique. In 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 [8069707] (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.. https://doi.org/10.1109/NSSMIC.2016.8069707
Kim, Hyun Suk ; Lee, Gyemin ; Ye, Sung-Joon ; Kim, Geehyun. / Design of a Rotational Modulation Collimator Utilizing Asymmetric Masks for the Gamma-Ray/Neutron Dual Imaging Technique. 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Institute of Electrical and Electronics Engineers Inc., 2017. (2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016).
@inproceedings{b782bb2d8abd43a1bd271ab97cfe73fd,
title = "Design of a Rotational Modulation Collimator Utilizing Asymmetric Masks for the Gamma-Ray/Neutron Dual Imaging Technique",
abstract = "We are currently developing a dual-particle imager based on the rotational modulation collimator (RMC) technique employing Cs2LiYCl6:Ce (CLYC) detector. A symmetric mask design has been conventionally used for RMC, however, it has an intrinsic problem of not being able to distinguish two symmetric sources located with respect to the rotation axis. In the present study, we propose a new design of collimator masks to solve the artifact problem in the source location estimation imposed by the symmetric pattern of collimator masks. We used the Monte Carlo N-Particle 6.1 (MCNP6) code to obtain modulation patterns, and we applied the maximum likelihood expectation maximization (MLEM) algorithm to reconstruct radiation images from the modulation patterns. The asymmetric mask design we proposed in this paper showed enhanced performance in image reconstruction by removing intrinsic artifacts from the symmetric mask design and will be used as a fundamental design for the future development of the dual-particle RMC system.",
author = "Kim, {Hyun Suk} and Gyemin Lee and Sung-Joon Ye and Geehyun Kim",
year = "2017",
month = "10",
day = "16",
doi = "10.1109/NSSMIC.2016.8069707",
language = "English",
series = "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.",
booktitle = "2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016",

}

Kim, HS, Lee, G, Ye, S-J & Kim, G 2017, Design of a Rotational Modulation Collimator Utilizing Asymmetric Masks for the Gamma-Ray/Neutron Dual Imaging Technique. in 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016., 8069707, 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., 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016, Strasbourg, France, 29/10/16. https://doi.org/10.1109/NSSMIC.2016.8069707

Design of a Rotational Modulation Collimator Utilizing Asymmetric Masks for the Gamma-Ray/Neutron Dual Imaging Technique. / Kim, Hyun Suk; Lee, Gyemin; Ye, Sung-Joon; Kim, Geehyun.

2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Institute of Electrical and Electronics Engineers Inc., 2017. 8069707 (2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016; Vol. 2017-January).

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

TY - GEN

T1 - Design of a Rotational Modulation Collimator Utilizing Asymmetric Masks for the Gamma-Ray/Neutron Dual Imaging Technique

AU - Kim, Hyun Suk

AU - Lee, Gyemin

AU - Ye, Sung-Joon

AU - Kim, Geehyun

PY - 2017/10/16

Y1 - 2017/10/16

N2 - We are currently developing a dual-particle imager based on the rotational modulation collimator (RMC) technique employing Cs2LiYCl6:Ce (CLYC) detector. A symmetric mask design has been conventionally used for RMC, however, it has an intrinsic problem of not being able to distinguish two symmetric sources located with respect to the rotation axis. In the present study, we propose a new design of collimator masks to solve the artifact problem in the source location estimation imposed by the symmetric pattern of collimator masks. We used the Monte Carlo N-Particle 6.1 (MCNP6) code to obtain modulation patterns, and we applied the maximum likelihood expectation maximization (MLEM) algorithm to reconstruct radiation images from the modulation patterns. The asymmetric mask design we proposed in this paper showed enhanced performance in image reconstruction by removing intrinsic artifacts from the symmetric mask design and will be used as a fundamental design for the future development of the dual-particle RMC system.

AB - We are currently developing a dual-particle imager based on the rotational modulation collimator (RMC) technique employing Cs2LiYCl6:Ce (CLYC) detector. A symmetric mask design has been conventionally used for RMC, however, it has an intrinsic problem of not being able to distinguish two symmetric sources located with respect to the rotation axis. In the present study, we propose a new design of collimator masks to solve the artifact problem in the source location estimation imposed by the symmetric pattern of collimator masks. We used the Monte Carlo N-Particle 6.1 (MCNP6) code to obtain modulation patterns, and we applied the maximum likelihood expectation maximization (MLEM) algorithm to reconstruct radiation images from the modulation patterns. The asymmetric mask design we proposed in this paper showed enhanced performance in image reconstruction by removing intrinsic artifacts from the symmetric mask design and will be used as a fundamental design for the future development of the dual-particle RMC system.

UR - http://www.scopus.com/inward/record.url?scp=85041711078&partnerID=8YFLogxK

U2 - 10.1109/NSSMIC.2016.8069707

DO - 10.1109/NSSMIC.2016.8069707

M3 - Conference contribution

T3 - 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016

BT - 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016

PB - Institute of Electrical and Electronics Engineers Inc.

ER -

Kim HS, Lee G, Ye S-J, Kim G. Design of a Rotational Modulation Collimator Utilizing Asymmetric Masks for the Gamma-Ray/Neutron Dual Imaging Technique. In 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Institute of Electrical and Electronics Engineers Inc. 2017. 8069707. (2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016). https://doi.org/10.1109/NSSMIC.2016.8069707