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Figure 1 Stent Images With 2 Different Convolution Kernels
A Cypher stent (3.5 x 13 mm) in the left main artery. (A) A multiplanar reformatted image, long-axis image generated with a smooth kernel (B30f), with 0.75-mm slice thickness (increment 0.4 mm). (B) A cross-sectional image generated with a smooth kernel. (C) A multiplanar reformatted image, long-axis image generated with a sharp kernel (B46f), with 0.6-mm slice thickness (increment 0.3 mm). (D) A cross-sectional image generated with a sharp kernel. A and B are suitable for delineating low-contrast objects such as coronary lumen or vessel wall, whereas C and D clearly visualize the high-density objects such as stent struts, but sometimes make much noise.
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