实验性肺结节模型：CT值、结节大小及实际钙含量。

Experimental lung nodule model: CT numbers, nodule size, and actual calcium content.

作者信息

Tarver R D, Holden R W, Ellis J H

出版信息

J Comput Assist Tomogr. 1983 Jun;7(3):402-6.

Abstract

An experimental pulmonary nodule model was developed to study the effect of nodule size, nodule environment, and calcium content on the attenuation values in two computed tomography (CT) scanners. The experimental results show that (a) calcium is the moiety most responsible for the CT number, (b) small nodules may have falsely low CT numbers, (c) CT numbers vary from scanner to scanner when scanning the same nodule, and (d) higher CT numbers are obtained when experimental nodules are scanned in air rather than water.

摘要

建立了一个实验性肺结节模型，以研究结节大小、结节环境和钙含量对两台计算机断层扫描（CT）扫描仪中衰减值的影响。实验结果表明：（a）钙是对CT值影响最大的部分；（b）小结节的CT值可能会被错误地低估；（c）扫描同一结节时，不同扫描仪得到的CT值不同；（d）实验结节在空气中扫描时比在水中扫描时获得的CT值更高。