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. 2021 Oct 26;41(11):1195–1227. doi: 10.1002/cac2.12218
Assessment Grade I recommendations Grade II recommendations Grade III recommendations
Primary tumor Nasopharyngeal MRI
  1. Nasopharyngeal CT
  2. PET‐CT
 PET‐MR
Regional lymph node Neck MRI
  1. Neck CT
  2. PET‐CT
  1. PET‐MR
  2. Ultrasound‐guided needle biopsy
Distant metastasis
  1. Chest CT + upper abdominal ultrasound or MRI/CT + bone scan
  2. PET‐CT

Chest X‐ray

Abdominal ultrasound
  1. PET‐MR
  2. CT / ultrasound‐guided needle biopsy

Abbreviations: MRI, magnetic resonance imaging; CT, computed tomography; PET, positron emission tomography.