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

User Chrissi
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Answer:

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.

I hope you find this information useful and interesting! Good luck!

User Altaf Patel
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