[False-positive findings in the 99mTc-MIBI SPECT of left bundle branch block and angiographic excluded coronary artery disease].

In a patient with left bundle branch block exercise/rest SPECT using 99mTc-MIBI revealed exercise-induced ischemia. After exclusion of significant coronary artery stenosis by angiography early dilated cardiomyopathy was assumed. Scintigraphic findings using 99mTc-MIBI SPECT in patients with left bundle branch block are discussed.