[Diagnostic accuracy of coronary artery lesion by 99mTc-MIBI exercise myocardial scintigraphy--containing the utility of simultaneous assessment of left ventricular function].
To determine whether technetium-99m hexakis-2-methoxy isobutyl isonitrile (99mTc-MIBI) myocardial scintigraphy is a superior method in the detection of coronary artery disease, exercise and rest 99mTc-MIBI planar and SPECT scintigraphy were performed on 27 patients with coronary artery disease. When 99mTc-MIBI (555 MBq (15 mCi)) was injected, first-pass radionuclide angiography (FPRNA) was simultaneously performed by a new mobile multicrystal gamma camera (SIM-400), and LV function (LVEF) was evaluated quantitatively. Visual semiquantitative detection of coronary lesions using 99mTc-MIBI images showed superior accuracy to that obtained using 201TlCl images. 99mTc-MIBI SPECT images were particularly useful in diagnosing LCX and RCA lesions. Moreover, the simultaneous assessment of perfusion and left ventricular function by 99mTc-MIBI FPRNA proved to be useful in the diagnosis of multi-vessel disease. In summary, 99mTc-MIBI SPECT scintigraphy with simultaneous assessment of left ventricular function showed better diagnostic accuracy than 201TlCl myocardial scintigraphy.
Uehara
T
T
Department of Radiology and Nuclear Medicine, National Cardiovascular Center, Osaka.
Nishimura
T
T
Kumita
S
S
Shimonagata
T
T
Hayashida
K
K
Katafuchi
T
T
Oka
H
H
Haze
K
K
Nonoki
H
H
D000368:Aged; D003327:Coronary Disease / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005080:Exercise Test; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D017256:Technetium Tc 99m Sestamibi; D013793:Thallium; D015899:Tomography, Emission-Computed, Single-Photon; D016277:Ventricular Function, Left; D015646:Ventriculography, First-Pass
D015609:Organotechnetium Compounds; C027549:thallium chloride; D017256:Technetium Tc 99m Sestamibi; D013793:Thallium