Magnetic Resonance Angiography Using Fresh Blood Imaging in Oral and Maxillofacial Regions
Figure 4
The production of a superimposed view of MRA using 3D-PC and a T2-weighted image in a 46-year-old patient with multiple hemangiomas of the bilateral tongue, lower lip, cheek, oral floor, masticator space, and right parotid space. (a) On MRA using 3D-PC, the external (arrow) and internal carotid arteries (black arrow), and the facial (arrowhead) and lingual arteries (black arrowheads) are shown, but the hemangiomas in the orofacial area are not seen. Acquisition time was 10 minutes and 15 seconds. (b) Fat-saturation T2-weighted image using 3D-FASE sequences of the head and neck. A hemangioma is visualized on this image (star). Acquisition time was 5 minutes and 8 seconds. (c) On fusing fat-saturation T2-weighted images with MRA by 3D-PC, hemangiomas and surrounding vessels can be visualized. However, image resolution of the fusion image is degraded compared to that of MRA using 3D-PC.
