1978 Volume 15 Issue 3 Pages 260-266
Sixty two brain scan cases who were pathologically confirmed as CVD were experienced in Tokyo Metropolitan Geriatric Hospital during the period from June 1972 to April 1977. They were the cases of 55 infarctions and 7 bleedings. The retrospective study were performed why the prediction of the prognosis of CVD was possible by careful analysis of brain scan data. By the difference of period before the death after the onset of CVD they were divided into 4 groups, namely 1st group (died within a month after the onset of CVD)-6 cases, 2nd group (died within 6 months)-28 cases, 3rd group (died within a year)-12 cases and 4th group (died after more than a year 16 cases.
The cerebral infarction showed abnormal case 55%, hot scan 58%, mean scan time 1.5 time, mean scan grading of hot lesion 1.9±1.2 and mean length of the hot lesion 5.9±3.2cm. The cases of cerebral bleeding showed 43%, 44%, 1.3 time, 1.7±1.1 grade, 6.5±1.7cm respectively.
The cases of cerebral infarction showed hot scan from the onset till 5th month after the attack with maximal grade in the 4th week. The mean grading of hot lesion were 2.3±1.1 in 1st group, 2.3±1.2 in 2nd group, 1.7±1.0 in 3rd group and 1.3±1.1 in 4th group. The incidence of abnormal scan were 75% in 1st group, 68% in 2nd group, 68% in 3rd group and 33% in 4th group. There observed some good correlation between the several parameters of brain scan and the prognosis of the cases. The cases of poor prognosis (1st & 2nd groups) were characterized to have larger lesion from the early period after the onset of the stroke. The cases of good prognosis (4th group) was characterized by the rapid decline of the grade of hot lesion. The observation of the size of hot lesion showed remarkably large standard deviation in data analysis indicating not so useful method to estimate the prognosis of CVD. The correlation of grade versus size of hot lesion was not good indicating the difference of the clinical meaning of them.
Because the cases of cerebral bleeding were severe and limited in number no conclusive result was observed.
Thus brain scan was considered to be as one of the useful aids for the estimation of the prognosis of cerebral infarction.
