In high-resolution cone-beam computed tomography （CBCT） using the flat-panel detector, imperfect or defect detector elements cause ring artifacts due to the none-uniformity of their X-ray response. They often distur...In high-resolution cone-beam computed tomography （CBCT） using the flat-panel detector, imperfect or defect detector elements cause ring artifacts due to the none-uniformity of their X-ray response. They often disturb the image quality. A dedicated fitting correction method for high-resolution micro-CT is presented. The method converts each elementary X-ray response curve to an average one, and eliminates response inconsistency among pixels. Other factors of the method are discussed, such as the correction factor variability by different sampling frames and nonlinear factors over the whole spectrum. Results show that the noise and artifacts are both reduced in reconstructed images展开更多
1.The first coeducational institution was Eden.第一所男女合校的教育机构就是伊甸园。 2.Opportunity knocks once.and the neighbors the rest of the time.机会只造访你一次,其他时间都是邻居造访你。 3.Every cosmetic dealer kn...1.The first coeducational institution was Eden.第一所男女合校的教育机构就是伊甸园。 2.Opportunity knocks once.and the neighbors the rest of the time.机会只造访你一次,其他时间都是邻居造访你。 3.Every cosmetic dealer knows that woman′s face is his fortune.展开更多
基金Supported by the National Basic Research Program of China ("973"Program)(2006CB601201)~~
文摘In high-resolution cone-beam computed tomography （CBCT） using the flat-panel detector, imperfect or defect detector elements cause ring artifacts due to the none-uniformity of their X-ray response. They often disturb the image quality. A dedicated fitting correction method for high-resolution micro-CT is presented. The method converts each elementary X-ray response curve to an average one, and eliminates response inconsistency among pixels. Other factors of the method are discussed, such as the correction factor variability by different sampling frames and nonlinear factors over the whole spectrum. Results show that the noise and artifacts are both reduced in reconstructed images
文摘1.The first coeducational institution was Eden.第一所男女合校的教育机构就是伊甸园。 2.Opportunity knocks once.and the neighbors the rest of the time.机会只造访你一次,其他时间都是邻居造访你。 3.Every cosmetic dealer knows that woman′s face is his fortune.
