Determination of the x-ray intensity pattern in mammography with very high-spatial resolution

被引：7

作者：

Hoeschen, C ^{[1
]}

Fessel, A ^{[1
]}

Buhr, E ^{[1
]}

Döhring, W ^{[1
]}

机构：

[1] Otto Von Guericke Univ Hosp, Dept Diagnost Radiol, D-39120 Magdeburg, Germany

来源：

MEDICAL IMAGING 2000: PHYSICS OF MEDICAL IMAGING | 2000年 / 3977卷

关键词：

X-ray intensity pattern; mammography; scanner; signal frequency limits; digital detector resolution requirements; aliasing;

D O I：

10.1117/12.384496

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 [生物医学工程];

摘要：

There is a lot of effort to develop digital detectors for mammography, for example for the screening programs. For this development it would be very helpful to know, which structure sizes have to be reproduced. Besides that, the information content of images produced by digital systems may be influenced by aliasing artifacts, if there are frequency components in the incoming signal higher than the Nyquist-frequency of the detector. Therefore the spatially modulated pattern of the X-ray intensity in a mammogram has to be known, but so far only little information is available. The method to measure and analyze the X-ray intensity pattern of a radiograph of the thorax in the detector plane which was presented at "Medical Imaging" conference last year(1) has been further developed in a way, that it meets the requirements For determing the intensity pattern in mammography.

引用

页码：220 / 230

页数：11

共 11 条

[1]

Advances in high-speed mammographic image quality [J].