Pulse Wave as an Alternate Signal for Data Synchronization During Gated Myocardial Perfusion SPECT Imaging
| Autor: | Miroslav Myslivecek, Martin Penicka, Milos Bilwachs, Milan Kamínek, Otto Lang, Helena Trojanova, Ivana Kunikova, Helena Balon |
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| Rok vydání: | 2011 |
| Předmět: |
Male
Cardiac function curve medicine.medical_specialty Gated SPECT Cardiac-Gated Imaging Techniques Ventricular Function Left Electrocardiography Myocardial perfusion imaging Spect imaging Internal medicine medicine Humans Pulse wave Radiology Nuclear Medicine and imaging Pulse Tomography Emission-Computed Single-Photon Ejection fraction medicine.diagnostic_test Cardiac cycle business.industry Myocardial Perfusion Imaging Signal Processing Computer-Assisted Stroke Volume General Medicine Middle Aged Cardiology Female business Perfusion |
| Zdroj: | Clinical Nuclear Medicine. 36:762-766 |
| ISSN: | 0363-9762 |
| Popis: | PURPOSE Proper identification of the cardiac cycle is essential for gated SPECT myocardial perfusion imaging. We have developed an alternate method of ECG for gating, that is, using the peripheral pulse wave (PW) as the triggering signal for gated SPECT acquisition. The aim of this study is to compare the use of this method of gating with the standard ECG trigger. METHODS We tested the PW triggering by comparing it with the ECG trigger. We evaluated 33 patients (25 males, 8 females), average age of 61 years (39-80) referred for stress myocardial perfusion imaging. Data from all patients were acquired twice and were processed by CEqual and QGS software. We compared the left ventricular ejection fraction (LVEF), end-diastolic and end-systolic volumes (EDV, ESV). Paired t test and Pearson correlation coefficient were used for comparison. RESULTS The mean LVEF, EDV, and ESV calculated with the ECG trigger were 0.52, 120, and 64, respectively, those with the pulse-wave trigger were 0.48, 126, and 71, respectively. Mean paired difference for LVEF was -0.034 (P |
| Databáze: | OpenAIRE |
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