Question

A radiopharmaceutical that can help evaluate the wash in and wash out phase during a ventilation study is:

Answer 1

Xenon 133

Step-by-step explanation:

Xenon 133 can be used as a radiopharmaceutical for ventilation scans, images are obtained when the patient rebreathes the gas (wash-in) and then when they exhale (washout), therefore these images can be obtained in just one projection.

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