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Hot spots unrelated to HCI. a Occipital osteoma cranial to the foramen magnum. b Hot spots visible in metabolically active bone regions. Note the clivus (arrow), which is a junction of two bone segments. The centre of the corpora of the vertebral column and the occipital protuberance show enhanced activity as well. c Bilateral enhancement of the labyrinth in a control subject with cochlear otosclerosis. d Hot spot at the caput mandibulae/temporomandibular joint
