A novel method improving the imaging resolution of a table-top Compton camera

Hee Seo, Se Hyung Lee, Jong Hwi Jeong, Ju Hahn Lee, Chun Sik Lee, Jae Sung Lee, Chan Hyeong Kim

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

Abstract

For a table-top Compton camera, which is currently under development in our group, the interaction position resolution of the absorber detector is a critical or limiting detector parameter that most seriously affects the imaging resolution of the Compton camera. Currently, it is assumed that all the interactions occur at the centers of the detector segments of the absorber detector, which is simple, but obviously not the best choice considering that the interaction depths of the photons in the absorber detector is not distributed uniformly, especially for the low-energy photons. To this end, the present study develops a novel method, called "average interaction depth (AID) method" to improve the imaging resolution of Compton camera by additionally considering the interaction depth of the incident photon in the absorber detector. Our simulation studies with Geant4 show that the imaging resolution of Compton camera can be significantly improved by using the AID method. The imaging resolution of the table-top Compton camera was improved from 9.9 mm to 7.6 mm in full width at half maximum (FWHM) for a 511 keV y point source. For a 364 keV y point source, the imaging resolution was improved more significantly, i.e., from 11.4 mm to 7.2 mm.

Original languageEnglish
Title of host publication2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
Pages2972-2975
Number of pages4
DOIs
StatePublished - 2007 Dec 1
Event2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC - Honolulu, HI, United States
Duration: 2007 Oct 272007 Nov 3

Publication series

NameIEEE Nuclear Science Symposium Conference Record
Volume4
ISSN (Print)1095-7863

Other

Other2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
CountryUnited States
CityHonolulu, HI
Period07/10/2707/11/3

Fingerprint

Photons
cameras
detectors
absorbers
interactions
point sources
photons
simulation

Cite this

Seo, H., Lee, S. H., Jeong, J. H., Lee, J. H., Lee, C. S., Lee, J. S., & Kim, C. H. (2007). A novel method improving the imaging resolution of a table-top Compton camera. In 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC (pp. 2972-2975). [4436758] (IEEE Nuclear Science Symposium Conference Record; Vol. 4). https://doi.org/10.1109/NSSMIC.2007.4436758
Seo, Hee ; Lee, Se Hyung ; Jeong, Jong Hwi ; Lee, Ju Hahn ; Lee, Chun Sik ; Lee, Jae Sung ; Kim, Chan Hyeong. / A novel method improving the imaging resolution of a table-top Compton camera. 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC. 2007. pp. 2972-2975 (IEEE Nuclear Science Symposium Conference Record).
@inproceedings{ba69962c68204d9e9c732796248d624f,
title = "A novel method improving the imaging resolution of a table-top Compton camera",
abstract = "For a table-top Compton camera, which is currently under development in our group, the interaction position resolution of the absorber detector is a critical or limiting detector parameter that most seriously affects the imaging resolution of the Compton camera. Currently, it is assumed that all the interactions occur at the centers of the detector segments of the absorber detector, which is simple, but obviously not the best choice considering that the interaction depths of the photons in the absorber detector is not distributed uniformly, especially for the low-energy photons. To this end, the present study develops a novel method, called {"}average interaction depth (AID) method{"} to improve the imaging resolution of Compton camera by additionally considering the interaction depth of the incident photon in the absorber detector. Our simulation studies with Geant4 show that the imaging resolution of Compton camera can be significantly improved by using the AID method. The imaging resolution of the table-top Compton camera was improved from 9.9 mm to 7.6 mm in full width at half maximum (FWHM) for a 511 keV y point source. For a 364 keV y point source, the imaging resolution was improved more significantly, i.e., from 11.4 mm to 7.2 mm.",
author = "Hee Seo and Lee, {Se Hyung} and Jeong, {Jong Hwi} and Lee, {Ju Hahn} and Lee, {Chun Sik} and Lee, {Jae Sung} and Kim, {Chan Hyeong}",
year = "2007",
month = "12",
day = "1",
doi = "10.1109/NSSMIC.2007.4436758",
language = "English",
isbn = "1424409233",
series = "IEEE Nuclear Science Symposium Conference Record",
pages = "2972--2975",
booktitle = "2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC",

}

Seo, H, Lee, SH, Jeong, JH, Lee, JH, Lee, CS, Lee, JS & Kim, CH 2007, A novel method improving the imaging resolution of a table-top Compton camera. in 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC., 4436758, IEEE Nuclear Science Symposium Conference Record, vol. 4, pp. 2972-2975, 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC, Honolulu, HI, United States, 07/10/27. https://doi.org/10.1109/NSSMIC.2007.4436758

A novel method improving the imaging resolution of a table-top Compton camera. / Seo, Hee; Lee, Se Hyung; Jeong, Jong Hwi; Lee, Ju Hahn; Lee, Chun Sik; Lee, Jae Sung; Kim, Chan Hyeong.

2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC. 2007. p. 2972-2975 4436758 (IEEE Nuclear Science Symposium Conference Record; Vol. 4).

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

TY - GEN

T1 - A novel method improving the imaging resolution of a table-top Compton camera

AU - Seo, Hee

AU - Lee, Se Hyung

AU - Jeong, Jong Hwi

AU - Lee, Ju Hahn

AU - Lee, Chun Sik

AU - Lee, Jae Sung

AU - Kim, Chan Hyeong

PY - 2007/12/1

Y1 - 2007/12/1

N2 - For a table-top Compton camera, which is currently under development in our group, the interaction position resolution of the absorber detector is a critical or limiting detector parameter that most seriously affects the imaging resolution of the Compton camera. Currently, it is assumed that all the interactions occur at the centers of the detector segments of the absorber detector, which is simple, but obviously not the best choice considering that the interaction depths of the photons in the absorber detector is not distributed uniformly, especially for the low-energy photons. To this end, the present study develops a novel method, called "average interaction depth (AID) method" to improve the imaging resolution of Compton camera by additionally considering the interaction depth of the incident photon in the absorber detector. Our simulation studies with Geant4 show that the imaging resolution of Compton camera can be significantly improved by using the AID method. The imaging resolution of the table-top Compton camera was improved from 9.9 mm to 7.6 mm in full width at half maximum (FWHM) for a 511 keV y point source. For a 364 keV y point source, the imaging resolution was improved more significantly, i.e., from 11.4 mm to 7.2 mm.

AB - For a table-top Compton camera, which is currently under development in our group, the interaction position resolution of the absorber detector is a critical or limiting detector parameter that most seriously affects the imaging resolution of the Compton camera. Currently, it is assumed that all the interactions occur at the centers of the detector segments of the absorber detector, which is simple, but obviously not the best choice considering that the interaction depths of the photons in the absorber detector is not distributed uniformly, especially for the low-energy photons. To this end, the present study develops a novel method, called "average interaction depth (AID) method" to improve the imaging resolution of Compton camera by additionally considering the interaction depth of the incident photon in the absorber detector. Our simulation studies with Geant4 show that the imaging resolution of Compton camera can be significantly improved by using the AID method. The imaging resolution of the table-top Compton camera was improved from 9.9 mm to 7.6 mm in full width at half maximum (FWHM) for a 511 keV y point source. For a 364 keV y point source, the imaging resolution was improved more significantly, i.e., from 11.4 mm to 7.2 mm.

UR - http://www.scopus.com/inward/record.url?scp=48149094033&partnerID=8YFLogxK

U2 - 10.1109/NSSMIC.2007.4436758

DO - 10.1109/NSSMIC.2007.4436758

M3 - Conference contribution

AN - SCOPUS:48149094033

SN - 1424409233

SN - 9781424409235

T3 - IEEE Nuclear Science Symposium Conference Record

SP - 2972

EP - 2975

BT - 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC

ER -

Seo H, Lee SH, Jeong JH, Lee JH, Lee CS, Lee JS et al. A novel method improving the imaging resolution of a table-top Compton camera. In 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC. 2007. p. 2972-2975. 4436758. (IEEE Nuclear Science Symposium Conference Record). https://doi.org/10.1109/NSSMIC.2007.4436758