参考体模和孤立性肺结节CT诊断的初步研究

CT Experimental Study on the Reference Phantom and SPN

孤立性肺结节（ＳＰＮ）是放射学常见的诊断难题，笔者应用生物医学工程技术，对参考体模和ＳＰＮＣＴ初步研究结果作报告。我们设计并制成参考体模和参考ＳＰＮ，能对任何密度的ＳＰＮ作为比较标准，评价所有的ＳＰＮ，参考体模用组织等效材料，仿真模拟胸部的解剖并组成四或五层的横断面。参考ＳＰＮ为各种大小的园柱形和不同的密度，应用ＣＴ能获得其生物物理参数（形态、大小、密度、三维座标等）这有利于ＣＴ诊断的质量保证（ＱＡ）和质量控制（ＱＣ）。

The Solitary Pulmonary Nodule(SPN)is a frequent ditagnostic challenge in radiology This article reported the results of CT experimental study on the reference phantom and SPN with biomedical engineering technology.We designed and built a reference phantom and reference SPN and used it as a standard against which the density of any SPN can be compared.Also,all SPN were evaluated.The reference phantom consisted of four or five transaxial sections that annthropomorphically simulated the anatomy of the thorax by using tissue equivalent material The reference SPN was variously sized cylinders and different in density Using CT scan.the biological and physical parameters(shape,size.density,three dimensional coordinate,et al)could be acquired.This was conducive to the quality assurance(QA)and the quality control(QC)CT diagnosis.