强迫症患者局部脑血流灌注与认知功能特点

目的:探讨强迫症患者局部脑血流灌注和认知功能特点及2者的相关性.方法:应用单光子发射计算机断层扫捕(SPECT)技术,对首发且未经治疗的39例强迫症患者(强迫症组)和39例正常人(正常对照组)于静息状态下行脑血流显像.以小脑皮质的放射性计数值为参考,计算各脑区放射性计数比值(RAR).采用威斯康星卡片分类测查进行认知功能评定.结果:强迫症组的左、右侧前额叶、前颞叶和右枕叶的RAR值分别为(94.4±6.1)、(99.8±6.4)、(91.6±6.1)、(92.8±6.6)和(102.3±7.7),高于正常对照组的(88.3±7.1)、(86.9±7.9)、(84.0±7.2)、(84.4±7.3)和(96.4±10.2),差异有统计学意义(t=6.78、11.93、7.15、9.40和4.89,P均＜0.05).威斯康星分类测查中,强迫症组正确数、完成分类数的得分为(33.24±5.39)和(4.42±1.62),低于正常对照组的(38.15±4.64)和(5.72±0.94)(t=-3.657和-2.495,P均＜0.05);在错误数和持续错误数上的得分为(13.21±6.89)和(6.79±4.89),高于正常对照组的(7.53±5.97)和(2.06±1.29)(t=5.881和4.873,P均＜0.05).右前额叶RAR与正确数呈负相关(r=-0.783.P=0.014),右前颢叶RAR与错误数旱正相关(r=0.384,P=0.047),右前额叶、左丘脑RAR与持续错误数呈正相关(r=0.511和0.610,P=0.041和0.049).结论:强迫症患者双侧前额叶、前颞叶脑血流灌注存在明显增高现象;右侧额叶、颞叶及左丘脑与认知损害相关.

Regional cerebral blood flow and cognitive function in patients with obsessive-compulsive disorder

Aim:To explore the relationship between regional cerebral blood perfusion and cognitive function in obsessive compulsive disorder(OCD) patients.Methods:Thirty-nine unmediated patients with OCD and thirty-nine controls were involved.All the subjects accepted cerebral blood perfusion imaging and Wisconsin Card Sorting Test(WCST).Results:Compared with the normal controls,the patients demonstrated significantly higher RAR in both the right and the left anterior frontal lobe,temporal cortex.Left prefrontal lobe ...