论文部分内容阅读
医学Ｘ光ＣＴ作为一种诊断设备，对其图像质量要求很高，而在实际应用中各种误差都将会影响最终的图像质量，因而对误差进行修正是非常重要的，这一点在各厂家的ＣＴ 产品中表现得尤为突出。通过研究对医学Ｘ光ＣＴ 的探测器、Ｘ光射束硬化效应等所产生的误差进行修正，给出了在ＰＣ机上对误差进行修正和图像重建的方法和步骤，完成了对分辨率水模、对比度水模、病人头部和肺部的图像重建，证明该方法行之有效。
Medical X-ray CT as a diagnostic equipment, its high image quality requirements, and in practical applications, a variety of errors will affect the final image quality, so the error correction is very important, this point in the various manufacturers CT products in the performance is particularly prominent. Through the study of the medical X-ray CT detector, X-ray beam hardening effect of the error generated by correction, given the PC error correction and image reconstruction methods and steps to complete the resolution of the water model , Contrast watermark, image reconstruction of the patient’s head and lungs, proving that the method works well.