双探头SPECT 360°采集对改善女性心肌灌注质量的作用  

Role of 360° acquisition in improving the quality of women's myocardial perfusion images with dual-head SPECT

作　　者：张秀梅[1] 冯珏[1] 王亚平[1] 方凤宁[1] 

机构地区：[1]河北医科大学第二医院核医学科,河北石家庄050000

出　　处：《中国医学影像技术》2010年第6期1162-1164,共3页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨360°采集对提高女性心肌血流灌注显像的作用。方法对20名正常女性行常规L模式180°和H模式360°心肌灌注显像采集,通过目测结合极坐标靶心图的定量分析,获得心肌核素稀疏或缺损的节段数以及心肌各壁的平均计数百分比。结果所有受检者中,常规模式断层图像可见14个节段的放射性减低,而H模式采集仅见6个稀疏节段。采用H模式,前壁、前侧壁和后间隔的稀疏可消失,而心尖、下壁、后壁和前间隔的稀疏仍然存在。L模式前壁、前侧壁和后间隔的平均计数百分比分别为(75.12±5.83)%、(79.81±7.08)%和(76.81±5.85)%,H模式分别为(80.39±3.50)%、(87.39±2.20)%和(80.88±4.45)%,两种模式差异有统计学意义(P分别<0.01、0.01和0.05)。结论 H模式360°采集可以有效地减少乳房组织衰减引起的伪影,而且图像质量优于L模式180°采集。Objective To explore the role of 360° acquisition in improving the quality of women＇s myocardial perfusion images.Methods Myocardial perfusion images of 20 normal women were acquired with 180° of normal L-mode and H-mode 360°,respectively.The number of sparse or defects segments and the percentages of average count of myocardial wall were obtained through the visual measurement and quantitative analysis of polar bull＇s-eye map.Results There were 14 sparse segments in normal L-mode and 6 sparse segments in H-mode among all subjects.The sparse segments disappeared in anterior,anterior and lateral and posterior septal walls under H-mode acquisition,but those still existed in apex,inferior and posterior,anterior septal wall.The average count percentage was（75.12±5.83）%,（79.81±7.08）% and（76.81±5.85）% in anterior,anterior and lateral,posterior septa walls of normal mode,respectively,while was（80.39±3.50）%,（87.39±2.20）% and（80.88±4.45）% respectively,in H-mode.There were significant differences（P〈0.01,0.01 and 0.05,respectively）between these two modes.Conclusion H-mode 360°acquisition could effectivly reduce artifacts on women＇s myocardial perfusion images caused by breast tissue attenuation,and the image quality may be superior to that of L-mode 180° acquisition.

关 键 词：体层摄影术 发射型计算机 单光子 心肌 质量控制 

分 类 号：R817.4[医药卫生—影像医学与核医学]