In one series, distant metastases were detected in 27% of patients on FDG-PET/CT [102]. Of note, PET/CT is of limited value in cases in which the original tumor demonstrates poor FDG uptake. Tumors with low FDG metabolic activity result in suboptimal delineation of primary tumor recurrence, lymph node involvement, and distant disease [150]. FDG-PET/MRI Skull Base to Mid-Thigh FDG-PET/MRI is a new imaging modality with a growing body of evidence demonstrating the feasibility of use for routine clinical imaging, including the response assessment and evaluation of recurrence following treatment of cancer of the head and neck, with FDG-PET/MRI performing similarly to FDG/PET CT [137,138]. MRA Neck With IV Contrast There is no relevant literature to support the use of MRA neck with IV contrast in the follow-up imaging or evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity. MRA Neck Without and With IV Contrast There is no relevant literature to support the use of MRA neck without and with IV contrast in the follow-up imaging or evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity. MRA Neck Without IV Contrast There is no relevant literature to support the use of MRA neck without IV contrast in the follow-up imaging or the evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity. MRI Head With IV Contrast There is no relevant literature to support the use of MRI head with IV contrast in the follow-up imaging or the evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity. MRI Head Without and With IV Contrast There is no relevant literature to support the use of MRI head with and without IV contrast in the follow-up imaging or the evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity.
Staging and Post Therapy Assessment of Head and Neck Cancer. In one series, distant metastases were detected in 27% of patients on FDG-PET/CT [102]. Of note, PET/CT is of limited value in cases in which the original tumor demonstrates poor FDG uptake. Tumors with low FDG metabolic activity result in suboptimal delineation of primary tumor recurrence, lymph node involvement, and distant disease [150]. FDG-PET/MRI Skull Base to Mid-Thigh FDG-PET/MRI is a new imaging modality with a growing body of evidence demonstrating the feasibility of use for routine clinical imaging, including the response assessment and evaluation of recurrence following treatment of cancer of the head and neck, with FDG-PET/MRI performing similarly to FDG/PET CT [137,138]. MRA Neck With IV Contrast There is no relevant literature to support the use of MRA neck with IV contrast in the follow-up imaging or evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity. MRA Neck Without and With IV Contrast There is no relevant literature to support the use of MRA neck without and with IV contrast in the follow-up imaging or evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity. MRA Neck Without IV Contrast There is no relevant literature to support the use of MRA neck without IV contrast in the follow-up imaging or the evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity. MRI Head With IV Contrast There is no relevant literature to support the use of MRI head with IV contrast in the follow-up imaging or the evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity. MRI Head Without and With IV Contrast There is no relevant literature to support the use of MRI head with and without IV contrast in the follow-up imaging or the evaluation of known or suspected recurrence of treated cancer of the paranasal sinuses or nasal cavity.