Document Detail

Pulse Wave as an Alternate Signal for Data Synchronization During Gated Myocardial Perfusion SPECT Imaging.
MedLine Citation:
PMID:  21825844     Owner:  NLM     Status:  In-Data-Review    
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 < 0.001), for EDV 5.9 (P = 0.012), and for ESV 7.9 (P < 0.001). Pearson correlation coefficient for LVEF was 0.955, for EDV 0.987, and for ESV 0.991 (P < 0.001 for all correlations).
CONCLUSION: : Triggering of gated-data acquisition by the PW is feasible. Quantitative parameters of cardiac function correlate highly with those obtained from the ECG trigger and the absolute differences are not clinically significant across a wide range of values.
Otto Lang; Helena Trojanova; Helena R Balon; Ivana Kunikova; Milos Bilwachs; Martin Penicka; Milan Kaminek; Miroslav Myslivecek
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical nuclear medicine     Volume:  36     ISSN:  1536-0229     ISO Abbreviation:  Clin Nucl Med     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-08-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7611109     Medline TA:  Clin Nucl Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  762-6     Citation Subset:  IM    
From the *Department of Nuclear Medicine, Charles University, Third Medical Faculty, Prague, Czech Republic; †Charles University, First Medical Faculty, Prague, Czech Republic; ‡Department of Internal Medicine, Charles University, Third Medical Faculty, Prague, Czech Republic; and §Department of Nuclear Medicine, Palacky University, Medical Faculty, Olomouc, Czech Republic.
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