Radiography of the petromastoid portion of the temporal bones.
D006801:Humans; D008416:Mastoid / Q000000981:diagnostic imaging*; D009141:Musculoskeletal System; D010579:Petrous Bone / Q000000981:diagnostic imaging*; D011859:Radiography; D013701:Temporal Bone
MASTOID/radiography; PETROUS BONE/radiography