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Table 1 Quick search checklist

From: Easily detected signs of perineural tumour spread in head and neck cancer

Fat pad or muscle signs

Cranial nerve affected

Imaging plane(s) best seen on

Fat pad anterior to the superior orbital rim

V1

Axial and sagittal

Fat superior to the levator palpebrae muscle

V1

Coronal and sagittal

Preantral and postantral fat pads

V2

Axial

Fat in pterygopalatine fossa

V2

Axial and coronal

Fat pad anterior to the mental foramen

V3

Axial

Mandibular bone marrow fat (in older adults ONLY, after red bone marrow has converted to fatty bone marrow)

V3

Axial and coronal

Fat pad at mandibular foramen

V3

Axial and coronal

Muscle of mastication

V3

Axial and coronal

Fat pad at stylomastoid foramen

VII

Axial