What is convexity in brain?
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What is convexity in brain?
Convexity meningiomas are tumors that grow on the surface of the brain (called the convexity). These tumors are about 20 percent of all meningioma cases. Convexity meningiomas are some of the most surgically accessible meningiomas, so we can usually remove them (resection) completely.
Where is a convexity meningioma?
Convexity meningioma grows on the surface of the brain directly under the skull. Accounting for approximately 20 percent of meningiomas, convexity meningiomas may not present symptoms until the tumor has become large enough to push on the brain.
What does convexity mean in medical terms?
having a rounded, somewhat elevated surface.
What does high convexity mean?
Pointedly: a high convexity bond is more sensitive to changes in interest rates and should consequently witness larger fluctuations in price when interest rates move. The opposite is true of low convexity bonds, whose prices don’t fluctuate as much when interest rates change.
What is convex in biology?
curved or bowed outward like the outside of a bowl, sphere or circle.
What are effective duration and effective convexity and when are they useful?
Duration and convexity are two tools used to manage the risk exposure of fixed-income investments. Duration measures the bond’s sensitivity to interest rate changes. Convexity relates to the interaction between a bond’s price and its yield as it experiences changes in interest rates.
What size is considered a small meningioma?
Meningiomas in the diameter range of 0.5 to 2.7 cm (“small” meningiomas) were significantly associated with extraneural malignancies and chronic renal failure as opposed to those in the diameter range of 2.8 to 10.5 cm (“large” meningiomas).
What is the difference between duration and effective duration?
Effective duration is a measure of the duration for bonds with embedded options (e.g., callable bonds). Unlike the modified duration and Macaulay duration, effective duration considers fluctuations in the bond’s price movements relative to the changes in the bond’s yield to maturity (YTM).
