A magnification mammography technique using storage phosphor plates: Experimental investigations concerning spatial resolution and detection of microcalcifications.
A magnification mammography technique using storage phosphor plates: Experimental investigations concerning spatial resolution and detection of microcalcifications.
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DOI：
10.1055/s-2007-1015512
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发表时间：
1997-08-01
影响因子：
1.8
通讯作者：
Grabbe, E
中科院分区：
文献类型：
--
作者：
Funke, M;Hermann, KP;Grabbe, E
目的：由于常规使用的存储荧光系统的乳房X线摄影已被其不足的空间分辨率为5线对/mm的限制，一个组合的放大乳房X线摄影技术与存储荧光板进行了研究，以检测微钙化。材料和方法：一种新的乳腺X线摄影系统，带有一个使用0.05-0.12 mm阳极的微聚焦管，允许以1.7倍放大率（m）获得乳房的调查视图，并以4倍放大率获得点视图。数字图像接收器包括高分辨率存储荧光板。为了确定空间分辨率，获得对比度传递曲线，并通过ROC（受试者工作特征）分析研究微钙化的检测。结果如下：空间分辨率为数字调查的意见（m=1.7）是8线对/毫米和点视图（m=4）是18线对/毫米。ROC分析表明，数字放大技术的性能显着高于传统的屏幕电影乳腺摄影技术，结论：数字乳腺摄影的局限性，相对于空间分辨率可以克服使用高放大率技术。
Purpose: Since the routine use of storage phosphor systems for mammography has been limited by its inadequate spatial resolution of 5 linepairs/mm, a combination of a magnification mammography technique with storage phosphor plates was investigated to detect microcalcifications. Material and Methods: A new mammography system with a microfocus tube using an anode of 0.05-0.12 mm allowed to obtain survey views of the breast with 1.7x magnification (m), and spot views with 4x magnification. The digital image receptor comprised a high resolution storage phosphor plate. To determine spatial resolution, contrast transfer curves were obtained, and the detection of microcalcifications was investigated by ROC (receiver operating characteristic) analysis. Results: Spatial resolution for digital survey views (m=1.7) was 8 linepairs/mm and for spot views (m=4) was 18 linepairs/mm. ROC analysis demonstrated a significantly higher performance of the digital magnification technique compared to the conventional screen-film mammography technique, Conclusions: The limitations of digital mammography with respect to spatial resolution can be overcome by using a high magnification technique.