MRI and CT perfusion scanning were performed after embolization.

Our data indicate that accurate diagnosis of pulmonary embolism is possible by perfusion scanning alone, without ventilation imaging.

Combining perfusion scanning with clinical assessment helps to restrict the need for angiography to a minority of patients with suspected pulmonary embolism.

With knowledge of the normal findings by perfusion scanning, an alternative diagnosis was established in 367 of the 515 patients.

Perfusion scanning with 99mTc-Sestamibi may be useful in the diagnosis of acute rejection in cardiac transplant recipients.