Fig. 3
From: Time-of-flight and black-blood MRI to study intracranial arteries in rats
Reliability of TOF images in rats. TOF images (a, c) and microscope (b, d) images show the right and left bifurcation sites of the ACA, OA, ICA, and MCA. These two representative examples show anatomic variations of the circle of Willis: a, b rat with two right MCAs pointed by red arrows; c, d rat with two right ACAs pointed by blue arrows. Intracranial artery diameters measured on TOF image (e) and on pictures taken with the microscope (f). Distances between right and left MCA measured on TOF images (g) and on pictures taken with the microscope (h). Arteries angles at the OA, ACA, and MCA bifurcations measured on TOF image (i). The body weight of these two animals was 390 and 450 g. ACA Anterior cerebral artery, DD Daughter-daughter angle, ICA Internal carotid artery, MCA Middle cerebral artery, OA Olfactory artery, PD Parent-daughter angle, TOF Time-of-flight