Tanaka Toyohiko, Honda Chika, Matsuo Satoru, Noma Kazuo, Oohara Hiromu, Nitta Norihisa, Ota Shinichi, Tsuchiya Keiko, Sakashita Yoko, Yamada Aya, Yamasaki Michio, Furukawa Akira, Takahashi Masashi, Murata Kiyoshi
Department of Radiology, Shiga University of Medical Science, Shiga, Japan.
Invest Radiol. 2005 Jul;40(7):385-96. doi: 10.1097/01.rli.0000165575.43381.48.
The image quality of a newly developed full-field digital phase contrast mammography (PCM) system and of a conventional screen-film (SF) mammography system were compared via images of a phantom and receiver operating characteristic (ROC) analysis of clinical images.
Magnified (1.75X) PCM images were scanned (sampling rate, 43.75 microm) and then reduced to original-sized, 25-micron pixel images printed on photothermographic film. Along with corresponding SF images, the phantom images were evaluated subjectively, and the clinical images of 38 patients were subjected to ROC analysis of mass and microcalcification.
In the image quality of a phantom, the PCM exceeded the SF. In both mass and microcalcification, the ROC analysis Az values of the PCM clinical images surpassed those of the SF images.
The PCM provides better images than the SF. Clinical trials suggest superior detection of both mass and microcalcification by full-field digital PCM over conventional SF mammography.
通过体模图像以及临床图像的接收者操作特征（ROC）分析，比较新开发的全场数字相位对比乳腺摄影（PCM）系统与传统屏-片（SF）乳腺摄影系统的图像质量。
对放大（1.75倍）的PCM图像进行扫描（采样率为43.75微米），然后缩放到原始尺寸，以25微米像素打印在光热成像胶片上。与相应的SF图像一起，对体模图像进行主观评估，并对38例患者的临床图像进行肿块和微钙化的ROC分析。
在体模的图像质量方面，PCM超过了SF。在肿块和微钙化方面，PCM临床图像的ROC分析Az值均超过了SF图像。
PCM提供的图像优于SF。临床试验表明，全场数字PCM对肿块和微钙化的检测优于传统SF乳腺摄影。
