| 张秀梅,冯珏,王亚平,方凤宁.双探头SPECT360°采集对改善女性心肌灌注质量的作用[J].中国医学影像技术,2010,26(6):1162~1164 |
| 双探头SPECT360°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 womens myocardial perfusion images with dual-head SPECT |
| 投稿时间：2009-11-02 修订日期：2009-12-07 |
| DOI： |
| 中文关键词: 体层摄影术,发射型计算机,单光子 心肌 质量控制 |
| 英文关键词:Tomography, emission-computed, single-photon Myocardium Quality control |
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| 摘要点击次数: 2046 |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| Objective To explore the role of 360° acquisition in improving the quality of womens 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 bulls-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 womens myocardial perfusion images caused by breast tissue attenuation, and the image quality may be superior to that of L-mode 180° acquisition. |
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