ArticleClinical physiology and functional imaging2025
Reproducibility of diastolic function parameters in repeated ECG-gated SPECT myocardial perfusion imaging and echocardiography.
Article in Clinical physiology and functional imaging, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Reproducibility of diastolic function parameters in repeated ECG-gated SPECT myocardial perfusion imaging and echocardiography.Clinical physiology and functional imaging · 2025Article
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4 authors.
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Abstract
objectiveTo study the reproducibility of diastolic function parameters from myocardial perfusion imaging (MPI) using ECG-gated single photon emission computed tomography (SPECT), and echocardiography in repeated imaging.
methodsWe studied the reproducibility of MPI diastolic function parameters peak-filling rate (PFR) and time to peak filling (TTPF) as well as echocardiographic parameters E/A, E/e', and E-wave deceleration time (DT). The study population consisted of 21 patients who underwent routine MPI with repeated rest acquisition and echocardiography. In a test-retest setting, appropriate diastolic measures were successfully obtained using SPECT in 20 patients, with E/A measured in 18, E/e' in 17, and DT in 16 patients.
resultsWe found that PFR was well reproducible with the intraclass correlation coefficient (ICC) 0.887, and coefficient of variation (CV%) 10.5. However, TTPF was poorly reproducible (ICC 0.012, and CV% 17.5). E/A was highly reproducible (ICC 0.963, and CV% 12.5). Decent reproducibility was observed for E/e' (ICC 0.809, and CV% 18.6) and DT (ICC 0.833, and CV% 12.0). We further studied the correlation between these parameters. PFR (EDV/s) had negative correlation with DT (r = -0.538, p = 0.039) and E/A had positive with E/é (r = 0.689, p = 0.002). No other significant correlations were observed (p > 0.05 for all). We also examined how parameters classified patients as normal or abnormal regarding the diastolic function. E/A and E/e´, as well as E/A and PFR showed similar classifications in 88% of cases, with a Kappa value of 0.433, p = 0.074 for both.
conclusionsPFR obtained from repeated SPECT studies, along with the E/A ratio, is highly reproducible.
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