Abstract
1) On the paralytic side of the extremities of hemiplegial patients caused by central nervous injury, osteoporotic feature was showed on röntgenogram and the higher RI 99mTc-phosphate accum, lation was found on bone scintigram.
2) In the RI (99mTc-albumin) accumulation curve of the knee region of the fourteen hemiplegial patients, the following facts were revealed. RI accumulation and the volume of blood were higher on the affected side than on the normal from the beginning. But five in fourteen cases turned out to be the opposite. That is, the amount of RI accumulation and blood volume were higher on the normal side than on the diseased one. This was probably caused by the result of recovery of the nerve.
3) After amputation of one side of the ischiac nerve, the accumulation of Tc-P and the accumulation curve of Tc-albumin of the hind limbs were higher on affected side than on normal side.
4) Although the volume of blood increases, on the osteoporotic side this increase was not always in proportion to the accumulation rate of Tc-P.
5) In the course of recovery of osteoporosis, the accumulation of Tc-P tends to increase at a time. As for the change of bone mass, an increase is observed at this time coincidentally.
6) The accumulation of Tc-P increase in the cases with osteoporosis. Therefore, detection of the extention of disease using 99mTc-P should be done with a lot of care.
