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目的:将生长抑素受体显像(SRS)与磁共振显像(MRI)结合起来计算体内生长抑素受体(SST)密度,以期确定生长抑素类似物的治疗剂量和改善垂体腺瘤的治疗效果。方法:将SRS所得的摄取指数与MRI测得的肿瘤体积结合起来计算体内SST的密度。摄取指数与肿瘤体积的比值称作密度指数(DI)。SR
OBJECTIVE: To determine the somatostatin receptor (SST) density by combining somatostatin receptor imaging (SRS) with magnetic resonance imaging (MRI) in order to determine the therapeutic dose of somatostatin analogues and to improve the pituitary adenoma Therapeutic effect. Methods: The density of SST in vivo was calculated by combining the uptake index obtained from SRS with the tumor volume measured by MRI. The ratio of uptake index to tumor volume is called the density index (DI). SR