PMID- 6608870 OWN - NLM STAT- MEDLINE DCOM- 19840521 LR - 20190622 IS - 0002-9149 (Print) IS - 0002-9149 (Linking) VI - 53 IP - 9 DP - 1984 May 1 TI - Determination of left ventricular mass by single-photon emission computed tomography with thallium-201. PG - 1365-8 AB - To test the hypothesis that single-photon emission computed tomography (SPECT) might permit accurate, noninvasive measurement of LV mass, SPECT measurements of LV mass to LV weight were compared in 20 mongrel dogs. Projection images of the left ventricle were acquired after intravenous injection of thallium-201 (TI-201). Transverse sections were reconstructed using filtered backprojection. Coronal sections were extracted from the reconstructed volume. The boundary of LV uptake of TI-201 in each coronal section was defined automatically using a threshold detector. Scintigraphic LV mass [total number of volume elements (voxels) showing TI-201 uptake X voxel volume X specific gravity of myocardium] was compared to actual LV weight. There was good correlation between scintigraphic LV mass and LV weight. Mean LV weight was 68 +/- 20 g (+/- standard deviation) (range 27 to 94). Mean SPECT LV mass was 66 +/- 19 g (range 28 to 100). Linear regression analysis yielded the following relation: SPECT LV mass = 0.87 X LV weight + 6.79 (r = 0.91, root-mean-square deviation from regression = 7.5). SPECT measurements were reproducible, with a coefficient of variation of 0.24%. Thus, SPECT of LV TI-201 distribution can be used to measure LV mass in canine myocardium. FAU - Wolfe, C L AU - Wolfe CL FAU - Corbett, J R AU - Corbett JR FAU - Lewis, S E AU - Lewis SE FAU - Buja, L M AU - Buja LM FAU - Willerson, J T AU - Willerson JT LA - eng GR - HL 17669/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Cardiol JT - The American journal of cardiology JID - 0207277 RN - 0 (Radioisotopes) RN - AD84R52XLF (Thallium) SB - IM MH - Animals MH - Dogs MH - Heart/anatomy & histology/*diagnostic imaging MH - *Radioisotopes MH - *Thallium MH - *Tomography, Emission-Computed EDAT- 1984/05/01 00:00 MHDA- 1984/05/01 00:01 CRDT- 1984/05/01 00:00 PHST- 1984/05/01 00:00 [pubmed] PHST- 1984/05/01 00:01 [medline] PHST- 1984/05/01 00:00 [entrez] AID - 0002-9149(84)90095-X [pii] AID - 10.1016/0002-9149(84)90095-x [doi] PST - ppublish SO - Am J Cardiol. 1984 May 1;53(9):1365-8. doi: 10.1016/0002-9149(84)90095-x.