Severity reflects the AI reading's own wording — it is not a diagnosis, and not your radiologist's opinion.
New or worsening symptoms? Contact your doctor promptly, whatever this summary says.
This is the most significant finding in these slices because it remains a continuous midline venous channel but is smaller and more flattened posteriorly than the adjacent intracranial venous course, and this focal narrowing outranks the other venous caliber changes by affecting the principal superior drainage path.
A bright serpiginous venous channel is seen in the posterior/inferior region; its caliber is not uniform, showing a segment where the bright lumen abruptly narrows before continuing toward the jugular region. This caliber change and the way the narrowed segment interrupts the otherwise broad venous signal is the most significant observation of this series because impaired continuity of the venous outflow channel is of greater consequence than the incidental parenchymal flow foci. Comparison against the more capacious superior sagittal sinus signal makes the local caliber loss conspicuous.
A bright tubular venous structure is prominently enlarged relative to the adjacent venous channel and extends through the right posterior skull base/upper neck, making it the most significant finding on these slices because it is the clearest asymmetric venous caliber change and dominates the series.
The junction where the superior sagittal sinus and straight sinus meet posteriorly shows converging bright signal; the caliber here appears relatively narrowed compared with the more anterior superior sagittal sinus, with the flow signal continuing into the paramedian channels on adjacent lateral slices.
On the most midline slices a bright curvilinear channel descends from the deep central region toward the confluence; the deep venous signal is present and continuous, coursing beneath the splenial region without a visible gap.
Multiple small punctate high-signal foci are scattered throughout the cerebral parenchyma on the medial slices, representing veins imaged in cross-section; they are distributed evenly without a focal cluster or dropout.
On these slices, no abnormality was seen in: the visualized hemispheric brain parenchyma outline, the calvarial contour, the scalp soft tissues, and the continuous bright flow signal of the visualized sinus segments apart from the caliber change noted above.
AI-assisted scan reading — not a clinical report
Issued: 2026-09-08
This document was generated by artificial intelligence from the scan images. It is an explanatory aid, NOT a diagnosis and NOT a substitute for a radiologist report. Always discuss it with your doctor.
Whole-exam read: 1 of 1 series, 60 representative slices in total.
This was an MR venogram, a type of MRI that maps blood flow through the veins that drain the brain. Overall, the flow signal in the large drainage channels was mostly continuous and bright, which is what the reading looks for. A few areas showed possible changes in the width of veins, and the two independent readings of your images did not agree about some of them — those disagreements are worth having a doctor review directly.
An MR venogram is used to check how blood drains out of the brain through its veins and sinuses. Changes in the width (caliber) of these channels can sometimes matter because narrowing may affect how easily blood flows out, and an unusually enlarged vein or an uneven channel can be normal variation or can reflect an outflow issue — this report cannot tell which. Several of these observations came from only one of two readings, or the two readings disagreed, which means they are uncertain and need a person to confirm rather than being treated as facts. Because you describe head pressure that changes with position and with Valsalva, along with visual, voice, swallowing, gait, and limb symptoms, it is reasonable to have these venous findings and your symptoms reviewed together by a doctor.
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