Lee T G
J Clin Ultrasound. 1975 Jun;3(2):129-32. doi: 10.1002/jcu.1870030211.
A gray scale hard copy unit has been adapted to an ultrasound B-scanner equipped with a video gray scale system and a conventional hard copier and a Polaroid camera. Comparative recordings were made of all three methods. The new hard copy unit produced a better gray scale image than Polaroid film, with reduction of cost and elimination of the problems inherent in Polaroid film.
一种灰度硬拷贝装置已适配于配备有视频灰度系统、传统硬拷贝机和宝丽来相机的超声B型扫描仪。对这三种方法都进行了对比记录。新的硬拷贝装置产生的灰度图像比宝丽来胶片更好，同时降低了成本并消除了宝丽来胶片固有的问题。
