Simultaneous assessment of left ventricular wall motion and myocardial perfusion at rest and during exercise by technetium-99m methoxy isobutyl isonitrile.
First-pass radionuclide ventriculography followed by myocardial SPECT with technetium-99m methoxy isobutyl isonitrile (Tc-99m MIBI) was performed on 12 patients with suspected coronary artery disease at rest and during exercise. Left ventricular wall motion and myocardial perfusion were assessed simultaneously and compared on a segment-by-segment basis. Segmental agreement between Tc-99m MIBI and Tl-201 with regard to the presence of perfusion defects was 95% (57/60) at rest and 93% (37/40) during exercise. With respect to the assessment of myocardial ischemia and/or infarction, abnormalities in regional wall motion agreed with the presence of myocardial perfusion defects in 18 out of 21 segments (86%). Simultaneous evaluation of regional wall motion and myocardial perfusion by Tc-99m MIBI may provide useful information for the assessment of myocardial ischemia.
Takeishi
Y
Y
First Department of Internal Medicine, Yamagata University School of Medicine, Japan.
Tono-oka
I
I
Chiba
J
J
Abe
S
S
Tsuiki
K
K
Tomoike
H
H
Yasui
S
S
D000328:Adult; D000368:Aged; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000503:physiopathology; D005080:Exercise Test; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D009200:Myocardial Contraction; D009203:Myocardial Infarction / Q000000981:diagnostic imaging / Q000503:physiopathology; D015609:Organotechnetium Compounds; D010477:Perfusion; D011877:Radionuclide Imaging; D012146:Rest; D013318:Stroke Volume; D017256:Technetium Tc 99m Sestamibi; D016277:Ventricular Function, Left / Q000502:physiology*
D015609:Organotechnetium Compounds; D017256:Technetium Tc 99m Sestamibi