TY - JOUR
T1 - Analysis of Brain SPECT Images Coregistered with MRI in Patients with Epilepsy
T2 - Comparison of Three Methods
AU - Long, Zaiyang
AU - Hanson, Dennis P.
AU - Mullan, Brian P.
AU - Hunt, Christopher H.
AU - Holmes, David R.
AU - Brinkmann, Benjamin H.
AU - O'Connor, Michael K.
N1 - Publisher Copyright:
Copyright © 2018 by the American Society of Neuroimaging
PY - 2018/5/1
Y1 - 2018/5/1
N2 - BACKGROUND AND PURPOSE: SISCOM and STATISCOM were clinically proved to be effective for ictal/inter-ictal single-photon emission computed tomography (SPECT) analysis coregistered with magnetic resonance imaging (MRI) for seizure localization. Recently, a software package also became available for this analysis. This study aimed to investigate and compare the performance of these analysis methods for seizure localization. METHODS: A total of 378 patients who underwent 99mTc-ethyl cysteinate dimer (ECD) SPECT scans were retrospectively reviewed and 28 remained after applying exclusion criteria. Their SPECT and MRI images were analyzed with SISCOM (with z-score of 1.5 and 2), STATISCOM, and MIMneuro, resulting in a total of 112 image data sets. Two experienced radiologists participated in the blind review process using a custom tool and they can mark up to two hyper- and/or hypoperfusion regions. Their review results were analyzed using the Jackknife Free Response Receiver-Operating Characteristics (JAFROC) test and the JAFROC figure-of-merit (FoM) was reported for each method. The interobserver agreement was also assessed using Cohen's kappa test. RESULTS: Based on the readers’ two choices, averaged FoM was 85.7%, 83.9%, 66.1%, and 51.8% for STATISCOM, MIMneuro, SISCOM (z-score = 2), and SISCOM (z-score = 1.5), respectively. The average confidence rating was 2.5, 2.3, 1.6, and 1.1 for STATISCOM, MIMneuro, SISCOM (z-score = 2), and SISCOM (z-score = 1.5), respectively. For interobserver agreement, kappa was.742 for STATISCOM,.816 for MIMneuro,.517 for SISCOM (z-score = 2), and.441 for SISCOM (z-score = 1.5; all P <.001). CONCLUSION: Our study demonstrated that STATISCOM showed the best performance for seizure localization, which was closely followed by MIMneuro. In addition, MIMneuro was not inferior to SISCOM with either z-score.
AB - BACKGROUND AND PURPOSE: SISCOM and STATISCOM were clinically proved to be effective for ictal/inter-ictal single-photon emission computed tomography (SPECT) analysis coregistered with magnetic resonance imaging (MRI) for seizure localization. Recently, a software package also became available for this analysis. This study aimed to investigate and compare the performance of these analysis methods for seizure localization. METHODS: A total of 378 patients who underwent 99mTc-ethyl cysteinate dimer (ECD) SPECT scans were retrospectively reviewed and 28 remained after applying exclusion criteria. Their SPECT and MRI images were analyzed with SISCOM (with z-score of 1.5 and 2), STATISCOM, and MIMneuro, resulting in a total of 112 image data sets. Two experienced radiologists participated in the blind review process using a custom tool and they can mark up to two hyper- and/or hypoperfusion regions. Their review results were analyzed using the Jackknife Free Response Receiver-Operating Characteristics (JAFROC) test and the JAFROC figure-of-merit (FoM) was reported for each method. The interobserver agreement was also assessed using Cohen's kappa test. RESULTS: Based on the readers’ two choices, averaged FoM was 85.7%, 83.9%, 66.1%, and 51.8% for STATISCOM, MIMneuro, SISCOM (z-score = 2), and SISCOM (z-score = 1.5), respectively. The average confidence rating was 2.5, 2.3, 1.6, and 1.1 for STATISCOM, MIMneuro, SISCOM (z-score = 2), and SISCOM (z-score = 1.5), respectively. For interobserver agreement, kappa was.742 for STATISCOM,.816 for MIMneuro,.517 for SISCOM (z-score = 2), and.441 for SISCOM (z-score = 1.5; all P <.001). CONCLUSION: Our study demonstrated that STATISCOM showed the best performance for seizure localization, which was closely followed by MIMneuro. In addition, MIMneuro was not inferior to SISCOM with either z-score.
KW - MIMneuro
KW - SISCOM
KW - SPECT
KW - STATISCOM
KW - epilepsy
UR - http://www.scopus.com/inward/record.url?scp=85040201936&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85040201936&partnerID=8YFLogxK
U2 - 10.1111/jon.12496
DO - 10.1111/jon.12496
M3 - Article
C2 - 29319202
AN - SCOPUS:85040201936
SN - 1051-2284
VL - 28
SP - 307
EP - 312
JO - Journal of Neuroimaging
JF - Journal of Neuroimaging
IS - 3
ER -