Medical Animation: Progression of Moyamoya | Cincinnati Children's Cerebrovascular Center

Moyamoya is a progressive disease of the vessels that supply blood to the brain

Moyamoya in Japanese means ‘puff of smoke because of it’s appearance on a radiograph

This video will show the progression of how vessels can narrow over time

Here in this picture of normal vessels you can see the vessels come in and split going to the side, middle and back

That area where they split is where moya moya changes occur

Stage 1 – the end of the vessels just before they split begins to severely narrow
Some of the small vessels in the branching arteries begin to get big

Stage 2- means there is a swelling of the vessels before and after that narrowing as they try to compensate

Stage 3 is a continued progression where there is not enough blood supply coming from the vessels in the neck

So there are numerous small tiny vessels that grow on their own to the side, the back, and the middle. Those vessels are called moyamoya vessels

Stage 4 – all those swollen, new to grow vessels, begin to diminish in size and die

Stage 5 – those moyamoya vessels become nearly absent, and the vessels coming from the neck are extremely small and not allowing blood through

Stage 6, complete occlusion of those vessels

At all stages lead to a high risk of stroke to the brain, both ischemic due to lack of blood flow and hemorrhagic death of the brain causes a rush of blood from other vessels

Moyamoya tends to present in the very young from infancy to teenagers, and in mid-adult. Most often it’s found on an MRI scan showing ischemic stroke and abnormal vessels. The best way to diagnose Moyamoya is with a diagnostic cerebral angiogram. (stage). Commonly patients are treated with aspirin and go on to surgical revascularization to resupply blood to the brain.

Видео Medical Animation: Progression of Moyamoya | Cincinnati Children's Cerebrovascular Center канала Cincinnati Children's