How wide is the left lateral ventricle?

The width of the lateral ventricle is normal, but there is no normal value for the lateral ventricle, because whether it is CT or MRI, the width of the scan is different in different layers. Every 6 to 7 mm of a layer of scan, scanning to different places, some places are very narrow, for example: scanning to the most edge of the ventricle is very narrow; scanning to a wider place, it is wider. And different ages, the width is not the same, with the growth of the brain atrophy, the lateral ventricle will gradually widen. So there's no normal value for the lateral ventricles, but we can judge whether he's showing brain atrophy based on his age, not just the lateral ventricles, but also the sulci and gyri.