Impact of attenuation correction for CZT-SPECT measurement of myocardial blood flow.
SPECT
attenuation correction
coronary artery disease
flow reserve
Journal
Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology
ISSN: 1532-6551
Titre abrégé: J Nucl Cardiol
Pays: United States
ID NLM: 9423534
Informations de publication
Date de publication:
12 2021
12 2021
Historique:
received:
04
12
2019
accepted:
04
02
2020
pubmed:
23
2
2020
medline:
25
3
2022
entrez:
22
2
2020
Statut:
ppublish
Résumé
Most of cardiac dedicated CZT-SPECT systems are not equipped with CT, whereas PET systems are. We evaluated the impact of AC correction on CZT-SPECT myocardial blood flow (MBF) and myocardial flow reserve (MFR) measurements. 104 patients were included. SPECT data were acquired on cadmium zinc telluride (CZT)-based pinhole cardiac camera in listmode using a stress (250 ± 17 MBq)/rest (511 ± 23 MBq) 1-day Tc-99m-tetrofosmin protocol. Low-dose CT was acquired on another SPECT/CT camera in the same position. All analysis was performed using Corridor4DM. Stress and rest MBF were significantly lower when AC was applied (P < 0.001). For regional and global MFR, there was no significant difference between AC and NAC measurements (P > 0.25 at least). Mean global LV MFR was 2.43 ± 0.87 and 2.33 ± 0.89, respectively, for NAC and AC measurements. Using a threshold of 2, 86 patients (83%) remained classified as normal and abnormal regarding global LV MFR whether AC was applied or not. Mean difference between NAC and AC values for the 18 other patients was 0.3. AC correction does not significantly affect MFR measurement both in regional and global LV analyses.
Identifiants
pubmed: 32080802
doi: 10.1007/s12350-020-02075-7
pii: 10.1007/s12350-020-02075-7
doi:
Substances chimiques
CdZnTe
0
Cadmium
00BH33GNGH
Zinc
J41CSQ7QDS
Tellurium
NQA0O090ZJ
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2560-2568Informations de copyright
© 2020. American Society of Nuclear Cardiology.
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