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- W2001255769 abstract "A prospective study was performed in 25 patients, comparing SPECT left ventricular (LV) end-diastolic (ED) volume (V) to that of contrast ventriculography (ANGIO). SPECT examination utilized 25 mCi Tc-99m RBC labeled in vivo. Sixty images were acquired with a Picker Dyna Camera 5 over 180° from RAO to LPO utilizing a 50 msec ED window. The 30-second images were preprocessed using a 5x5 spatial filter with a cutoff of 0.10 and then reconstructed into transaxial slices by filtered back-projection utilizing a low resolution proprietary filter. The apex and base of the LV were determined by review of additional long-axis and short-axis slice reconstructions. LVEDV was subsequently calculated from count-corrected regions of interest (ROIs) generated about the transaxial LV slices. All patients underwent contrast ventriculography (ANGIO) within 72 hours of the SPECT study. The correlation coefficient between SPECT and ANGIO LVEDV over a range of 87 to 506 cc was 0.97 with a standard error of the estimate (SEE) of 23 cc. We conclude that SPECT allows for noninvasive and accurate determination of LVEDV without the need for blood sample counting or assumptions about LV geometry and chest wall attenuation." @default.
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- W2001255769 date "1984-09-01" @default.
- W2001255769 modified "2023-09-26" @default.
- W2001255769 title "LEFT VENTRICULAR VOLUMES FROM SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY (SPECT)" @default.
- W2001255769 doi "https://doi.org/10.1097/00003072-198409001-00056" @default.
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