title: Comparison of maximal elastance and systolic wall thickening using arterial tonometry and gated myocardial SPECT in patients undergoing coronary artery bypass grafting.
abstract: Myocardial SPECT using (99m)Tc-sestamibi, (99m)Tc-tetrofosmin, (201)Thallium is widely used in nuclear cardiology. Left ventricular systolic wall thickening (SWT) by SPECT and regional maximal elastance (rE(max)) using arterial tonometry were compared. rE(max) was calculated from time-pressure and time-volume curves. In normal heart, improvement of SWT was 4.1+/-11%, while 6.0+/-16% in dilated heart. Improvement of rE(max) was 0.67+/-1.0mmHg/mL in normal heart and 0.32+/-0.7mmHg/mL in dilated heart (p<0.05). rE(max) can be an alternative variable as an index of regional contractility.
authors.affiliation: Department of Radiology, Division of Nuclear Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
authors.forename: Won Jun
authors.initials: WJ
authors.lastname: Kang
authors.forename: Dong Soo
authors.initials: DS
authors.lastname: Lee
authors.forename: Byeong Il
authors.initials: BI
authors.lastname: Lee
authors.forename: Jin Chul
authors.initials: JC
authors.lastname: Paeng
authors.forename: Jae Sung
authors.initials: JS
authors.lastname: Lee
authors.forename: June-Key
authors.initials: JK
authors.lastname: Chung
authors.forename: Myung Chul
authors.initials: MC
authors.lastname: Lee
mesh_terms: D000368:Aged; D055426:Cardiac-Gated Single-Photon Emission Computer-Assisted Tomography / Q000379:methods*; D002311:Cardiomyopathy, Dilated / Q000000981:diagnostic imaging / Q000473:pathology*; D016022:Case-Control Studies; D001026:Coronary Artery Bypass; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008297:Male; D008365:Manometry / Q000379:methods*; D008875:Middle Aged; D009200:Myocardial Contraction