A =                                          falx cerebri	B =                                          outer table of bone	C =                                          ophthalmic a.	D =                                          platysma
E =                                          parotid duct	F =                                          optic nerve	G =                                          levator palpebrae superioris

The follow figure presents three images from a CT angiogram of the vessels of the neck; (a) is a left anterior oblique view, (b) is a straight anterior view, (c) is a right anterior oblique view. The left subclavian a., as it arises from the aortic arch, is indicated by an asterisk.

A =                                          superior thyroid a.	B =                                          facial a.	C =                                          occipital a.	D =                                          basilar a.
E =                                          anterior communicating a.	F =                                          post. cerebral a., or post. communicating a., I'm not sure	G =                                          middle cerebral a.

What is wrong with this patient?                                          blocked right internal carotid a.

Presented below are two coronal T1-weighted MRIs of the head, the one on the left being 12 mm anterior to the one on the right.

A =                                          lacrimal gland	B =                                          (air in) bulla ethmoidalis	C =                                          middle concha	D =                                          tooth	E =                                          inferior oblique
F =                                          inferior concha	G =                                          superior sagittal sinus	H =                                          superior rectus	I =                                          lateral rectus	J =                                          optic n.
K =                                          medial rectus	L =                                          superior oblique	M =                                          levator palpebrae superioris	N =                                          ophthalmic a.	O =                                          inferior rectus
P =                                          diploe	Q =                                          temporalis	R =                                          superior ophthalmic v.	S =                                          vitreous of eyeball