Gamut: visualization of the pulmonary artery on99mTc-MIBI myocardial perfusion scintigraphy: a cause for focal uptake in the lung

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Case report

A 78-year-old woman with suspected cardiac chest pain and a history of pulmonary hypertension, which had been previously confirmed echocardiographically (systolic pressure of pulmonary artery had been 40 mm Hg), was referred for myocardial perfusion scintigraphy because her baseline electrocardiogram was normal. A stress myocardial SPECT study with bicycle exercise was performed after an intravenous injection of 740 Mbq 99mTc-methoxyisobutyl isonitrile (MIBI). Stress images showed no perfusion

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