Pitkänen M, Lahtinen T, Hyödynmaa S, Mutru O, Länsimies E
Scand J Rheumatol. 1982;11(4):199-202. doi: 10.3109/03009748209098191.
Methodological aspects of quantitative sacroiliac scintigraphy (QSS) using [99mmTc]methylene diphosphonate (MDP) were studied. To improve the diagnostic value of QSS it is important to understand the errors involved in the calculated indices. The accumulated radioactivity in the sacro-iliac joint, compared with that in the sacral bone (SI ratio), decreased linearly with age, by about 24% from the age of 15 years to 71 years. The post-injection time of scintigraphy was not critical, if the scintigraphy was carried out after 2.5 hours. Although the variances of the SI ratios in our control material were relatively high, the repeatability of the SI ratio measurement was 3.9%. The influence of measuring geometry on the QSS and the acceptability of the sacrum as the reference area were tested.
研究了使用[99mmTc]亚甲基二膦酸盐（MDP）进行定量骶髂关节闪烁扫描（QSS）的方法学方面。为提高QSS的诊断价值，了解计算指标中涉及的误差很重要。骶髂关节的累积放射性与骶骨相比（SI比值），随年龄呈线性下降，从15岁到71岁下降约24%。如果在注射后2.5小时后进行闪烁扫描，闪烁扫描的注射后时间并不关键。尽管我们对照材料中SI比值的方差相对较高，但SI比值测量的重复性为3.9%。测试了测量几何形状对QSS的影响以及骶骨作为参考区域的可接受性。
