公开(公告)号：JP2000245722A

公开(公告)日：2000-09-12

申请号：JP2000002983

申请日：2000-01-11

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： I SUYORU ,  BAKU SONHI ,  PYO HYONBON ,  KIM SUNFAN

IPC: A61B6/00

Abstract: PROBLEM TO BE SOLVED: To quantitatively measure bone density by setting an interest area in an X-ray image of an acquired bone, dividing this interest area into plural blocks, and setting an average gray level of pixels of the respective blocks and a value by releveling the average value as a bone trabecular index. SOLUTION: When diagnosing simple X-ray osteoporosis, first of all, after obtaining a simple X-ray image of a wrist radius of an examinee, an interest area is set. This interest area is divided into plural blocks including plural pixels, and a gray level of the respective blocks set so that the lowest gray level becomes 0 and the highest gray level becomes 255 is linearly adjusted to the pixels. Next, a bone trabecular pattern is analyzed, and a change in the bone trabecular pattern by the extraction of calcium is quantitatively determined to obtain a bone trabecular index. That is, an average gray level is arithmetically operated on the respective blocks in the interest area to determine a releveled value of the average gray level to the whole blocks to set this value as the bone trabecular index.