CCD mosaic technique for large-field digital mammography
CCD mosaic technique for large-field digital mammography
复制标题
大视场数字乳腺X线摄影的CCD拼接技术
DOI：
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Hong Liu
中科院分区：
文献类型：
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作者：
A. Jalink;J. McAdoo;G. Halama;Hong Liu
作者介绍了一种用于大视野数字乳腺X线摄影的新技术。该仪器采用了马赛克的电子数字成像[电荷耦合器件（CCD）]阵列，新颖的区域扫描，以及辐射曝光和散射减少机制。成像阵列以棋盘图案镶嵌的方式安装在载体平台上。为了填充阵列活动区域之间的间隙，将平台重新定位三次，并进行四次X射线曝光。多个图像区域然后由数字计算机重新组合以产生整个区域的合成图像。为了减少X射线散射和暴露，在X射线源和患者之间插入铅孔板。孔板具有与成像阵列图案对准的方形孔的马赛克，并且孔板与载体平台同步地重新定位。作者讨论了概念验证测试，证明了他们的方法的技术可行性。该仪器应适合纳入标准乳腺X线摄影装置。新技术的独特功能是：大视野覆盖（18 × 24 cm）;高空间分辨率（14-17 lp/mm）;散射抑制;以及在临床条件下出色的对比度特性和病变可检测性。
The authors present a novel technique for large-field digital mammography. The instrument uses a mosaic of electronic digital imaging [charge coupled device (CCD)] arrays, novel area scanning, and a radiation exposure and scatter reducing mechanism. The imaging arrays are mounted on a carrier platform in a checker-board pattern mosaic. To fill in the gaps between array-active areas the platform Is repositioned three times and four X-ray exposures are made. The multiple image areas are then recombined by a digital computer to produce a composite image of the entire region. To reduce X-ray scatter and exposure, a lead aperture plate is interposed between X-ray source and patient. The aperture plate has a mosaic of square holes in alignment with the imaging array pattern and the plate is repositioned in synchronism with the carrier platform. The authors discuss proof-of-concept testing demonstrating technical feasibility of their approach. The instrument should be suitable for incorporation into standard mammography units. Unique features of the new technique are: large field coverage (18x24 cm); high spatial resolution (14-17 lp/mm); scatter rejection; and excellent contrast characteristics and lesion detectability under clinical conditions.
影响因子：
3.8
作者：
A. Karellas;L. J. Harris;Hong Liu;Hong Liu;Michael A. Davis;Carl J. D'Orsi
通讯作者：
A. Karellas;L. J. Harris;Hong Liu;Hong Liu;Michael A. Davis;Carl J. D'Orsi
影响因子：
3.8
作者：
LIU, H;KARELLAS, A;DORSI, CJ
通讯作者：
DORSI, CJ
影响因子：
3.8
作者：
ANTONUK, LE;BOUDRY, J;STREET, RA
通讯作者：
STREET, RA