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Evaluation of absolute left ventricular volume by gated equilibrium blood pool scintigraphy using count based method clinical study


, : Evaluation of absolute left ventricular volume by gated equilibrium blood pool scintigraphy using count based method clinical study. Kaku Igaku 24(12): 1723-1729

In order to estimate the absolute left ventricular volume (LVV) and the cardiac output (CO), gated equilibrium blood pool scintigraphy was performed. CO by radionuclide (RN) method was compared with CO simultaneously measured by thermodilution method (TDM) using Swan-Ganz catheter in 22 patients with cardiac diseases. To improve these determinations by RN, LVV using the count-based method was corrected by each of four transmission factors (TF1 = 1, TF2 (water) = e-0.15d, TF3 = e-0.13d and TF4 = 1-(1-e-0.125d)1.26 d: depth). We compared CO by RN with by TDM. CO by RN was significantly correlated with TDM: TF1 (CO (RN) = 0.23 .times. CO (TDM) + 0.08, r = 0.628, p < 0.002), TF (CO (RN) = 1.10 .times. CO (TDM)-0.47, r = 0.914, p < 0.001), TF3 (CO (RN) = 0.89 .times. CO (TDM)-0.30, r = 0.912, p < 0.001), and TF4 (CO (RN) = 0.71 .times. CO (TDM)-0.23, r = 0.911, p < 0.001), respectively. These results indicate that the linear attenuation correction is necessary and sufficient for accurate measurement of LVV and CO by RN using count-based method in clinical use.

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Accession: 005395869

PMID: 2834589

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