1. Influences of radionuclides on left ventricular phase analysis of gated myocardial perfusion single-photon emission computed tomography images in ischemic heart disease
- Author
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Toshiaki Kadokami, Masayuki Sasaki, Tomohisa Fukunaga, and Kenichi Sanui
- Subjects
Technetium Tc 99m Sestamibi ,medicine.medical_specialty ,Coronary Artery Disease ,Disease ,Single-photon emission computed tomography ,030218 nuclear medicine & medical imaging ,Coronary artery disease ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Phase.standard deviation ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Retrospective Studies ,Tomography, Emission-Computed, Single-Photon ,medicine.diagnostic_test ,business.industry ,Myocardial Perfusion Imaging ,General Medicine ,Middle Aged ,medicine.disease ,030220 oncology & carcinogenesis ,Cardiology ,medicine.symptom ,Ischemic heart ,business ,Phase analysis ,Perfusion - Abstract
Phase analysis is expected to improve the accuracy of myocardial ischemia diagnosis in conjunction with myocardial perfusion and wall motion imaging and quantification. Although previous studies have reported perfusion image disagreements in relation to radionuclides, a few reports have examined the influences of radionuclides on phase analysis. We evaluated the influences of different radionuclides on stress-induced left ventricular mechanical dyssynchrony by phase analysis using electrocardiogram (ECG)-gated myocardial perfusion single photon emission computed tomography (SPECT) (MPS) imaging in patients with ischemic heart disease (IHD). A total of 202 patients with suspected or known IHD were investigated retrospectively. All the patients underwent coronary arteriography and were subsequently classified into the following groups: 43 patients without any coronary lesion (0VD), 71 patients with single-vessel disease (1VD), 59 patients with two-vessel disease (2VD), and 29 patients with three-vessel disease (3VD). Both stress and rest gated-MPS were performed using 99mTc-methoxyisobutylisonitrile (MIBI)/tetrofosmin (TF) in 118 patients and with 201TlCl in 84 patients. Phase analysis was performed to obtain the peak phase, phase standard deviation (SD), and bandwidth. Finally, we investigated potential differences between the phase analysis indices and the respective radionuclides used. The peak phase did not exhibit any significant differences in the numbers of affected branches in either 99mTc-MPS or 201Tl-MPS during stress or rest MPS. Furthermore, both the phase SD and bandwidth demonstrated a tendency to increase in patients with increased numbers of affected branches. A significant difference was observed in the stress MPS when 99mTc-MIBI/TF was used (p
- Published
- 2021