MR Imaging Evaluation of Hepatocellular Carcinoma Treated with Stereotactic Body Radiation Therapy (SBRT): Long Term Imaging Follow-Up

Persistent arterial phase hyperenhancement is a common finding post stereotactic body radiation for hepatocellular carcinoma and does not indicate viable neoplasm. Standard response assessment by mRECIST should be used with caution. Local progression is better defined by growth of >5 mm or new arterial phase hyperenhancement as post SBRT, most patients developed geographic delayed phase hyperenhancement.

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