Q. MRI brain suggest internal carotid and basilar arteries demonstrate flow voids. Please explain.

Hello doctor,

The internal carotid and basilar arteries demonstrate flow voids, implying gross patency. Can you please explain this finding from an MRI done on my brain?

MRI brain without contrast study result impressions:

No intracranial abnormality.

Sinusitis narrative provided reason for exam:

Migraines additional history: 31-year-old female, Technique: Nonenhanced high field brain MRI, consisting of sagittal and axial T1 and axial T2, flair and diffusion weighted sequences. No previous exams available for comparison findings. No intracranial hemorrhage mass or extra-axial fluid collection is apparent. No infarction, ischemic change or demyelinating process is observed. Ventricular size is normal. The internal carotid and basilar arteries demonstrate flow voids, implying gross patency. The right maxillary sinus is approximately one third opacified and may contain viscous fluid. The right sphenoid sinus is approximately one half opacified and may also contain fluid. In the proper clinical setting, sinus fluid could represent acute sinusitis. Scattered sinus inflammation is apparent elsewhere.