What is the role of MRI in target delineation of radiation therapy for non-NPC H&N cancers?

Topics: Head and Neck Cancers • Radiation Oncology

Do you utilize MRI to aid in planning for oropharyngeal primaries?

Answer from: Radiation Oncologist at Community Practice

I don't think MRI is necessary for most OPCs. I do use MRI in some cases, such as 1) patients being considered for surgery first (to determine if endophytic tumor is better suited for RT), 2) whenever I have clinical concern for perineural spread, and 3) to further assess deep invasion or involvemen...

Comments

Radiation Oncologist at University of Florida
Agree.

Answer from: Radiation Oncologist at Academic Institution

Our practice is to obtain MRI for all oropharynx cancers planned for radiation. PET/CT often underestimates the size of the primary tumor. Pictures in the supplement of our paper illustrate how PET/CT can underestimate the GTV compared to MRI.Tsai et al., PMID 35050342

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