Methods for generating a curved raster image are disclosed. The blood vessels are irradiated with a penetrating radiation, and an image of the blood vessels is generated based on detected radiation. A system and method in accordance with the present invention provides a programmable replacement mechanism applicable to caching devices, such as instruction and data caches and TLBs in processors or texture map caches in graphics systems, that use set associative or fully associative organization. The first recessed area extends along an inner wall of the body, proximate the proximal end of the body of the chamber. The invention also provides for various pharmaceutical compositions of the same and methods for treating diseases responsive to modulation of P2Y1 receptor activity. A buried dopant zone of the same charge type as the drift zone has a higher impurity concentration than the drift zone and is arranged in a space charge region of the pn junction at a distance from the trench bottom of the trench structure.