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Fig. 1D —Anatomy of masticator space in healthy 34-year-old man. LP = lateral
pterygoid muscle, M = masseter muscle, MP = medial pterygoid muscle, P =
parapharyngeal space, Pa = parotid gland, T = temporalis muscle.
Contrast-enhanced axial (A) and coronal (B) CT images and
unenhanced axial (C) and contrast-enhanced coronal (D)
T1-weighted images. Internal maxillary artery (horizontal arrows,
A and B) emanates from external carotid artery (vertical
arrow, A), entering masticator space deep in relation to neck of
mandible. Mandibular nerve exits trigeminal ganglion (horizontal
arrow, D) and enters masticator space (arrowheads,
C and D) through foramen ovale (vertical arrow,
B), lying between medial and lateral pterygoid muscles. Vertical arrows
in C show pterygopalatine fossae, and oblique arrows in C and
D show zygomatic arch.
