1987 年 43 巻 10 号 p. 1536-1542
For discussion of PACS development, the author has indicated the following problems. 1) Radiology Information System (RIS), its value as a pioneer system ; 2) Two Japanese big projects concerned with PACS development : MEDIS and PHD ; 3) Image reading on a CRT ; 4) Image processing by experiments using gastric cancer cases ; and 5) Man power in PACS management. In conclusion, the key for PACS development is concerned with CR, design of intelligent input and output devices, progress of CRT display technology and advanced image processing in points of the technical elements of PACS. Further developments are expected from hospital oriented PACS to the image information system depending on the regional health care system.