| 摘要 |
<p>An osteometry in which the accuracy of measuring a bone by using an image, which is obtained by radiography, of a bone to be examined, mainly a sponge bone, is improved, which method consists of the steps of designating two points each on head and trunk portions of a bone to be examined in an interested region of an image thereof obtained by radiography, and connecting the midpoints of the respective two points so as to determine the axis of the bone; setting a reference measuring line, which is perpendicular to the bone axis, in a position which is away along the bone axis by a predetermined distance from either the two points on the head portion of the bone or the midpoint thereof; obtaining a pattern, which is relative to the penetrated radiation dose of the object bone, along the reference measuring line or a single or a plurality of measuring lines in the vicinity of the reference measuring line; and carrying out predetermined computation by using this pattern. An apparatus for use in practising this method is also provided. This method may be modified so that the computation of a pattern is carried out in a preset partial region alone on the basis of the width of a bone to be examined. A plurality of patterns obtained of an object bone may be smoothed, and predetermined computation of the smoothed patterns may then be carried out. This method may have the steps of determining two points on borders at both end portions of an object bone with soft tissues on a pattern obtained, obtaining a corrected pattern concerning the penetrated radiation dose of the object bone by subtracting from the first-mentioned pattern a region concerning the penetrated radiation dose corresponding to soft tissues approximated by a line connecting these two points, and conducting the measurement of the object bone by carrying out computation using this correction pattern. <IMAGE></p> |
