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Two types of lung scans are usually done together: 1  Ventilation scan. During this scan, you inhale a radioactive tracer gas or mist. 2  Perfusion scan. During this scan, a radioactive tracer is injected into a vein in your arm.
The following pictures show different lung scans from various ACC patients with lung metastases (focal rounded pulmonary opacities also called nodules or lesions). Most pictures are taken from a CT scan where a contrast agent was used.They show the different appearances of ACC lung mets.he following pictures show different lung scans from various ACC patients with lung metastases (focal rounded pulmonary opacities also called nodules or lesions). Most pictures are taken from a CT scan where a contrast agent was used.