明石 健一¹, 渋谷 昇¹, 伊藤 健一¹, 横井 浩²

Ken-ichi AKASHI¹, Noboru SHIBUYA¹, Ken-ichi ITO¹, Hiromu YOKOI²

¹東京農工大学工学部電子工学科, ²大阪日生病院

¹Tokyo University of Agriculture and Technology, Faculty of Electronic Engineering, ²Nissei Hospital

キーワード : facsimile, dot-pattern, hard copy, gray scale

We have developed a ultrasound diagnostic system with a facsimile on which ultrasound images can be displayed, and we can get cheap hardcopies easily with that system.　
In the technique for a display of continuous tone pictures on a bilevel display equipment such as a facsimile, it has been found that the distinction of the dot-patterns has a great influence upon their gray-scales.
We have found that the dot-pattern influence upon their gray-scales is due to overlap of the dots. In such a case, the dot-pattern which, they say, is good for minimizing a mosaic is not necessarily good for gray-scales.
The transmission of the ultrasound images to a facsimile installed in another station is demonstrated. The transmission is realized easily, because the facsimile is standardized.