| 姜雪 杨峰峰 王秀婷 曹绍东 张同.320排动态容积CT冠脉成像双低扫描的可行性研究[J].,2017,17(3):451-454 |
| 320排动态容积CT冠脉成像双低扫描的可行性研究 |
| To Study the Feasibility of Coronary Artery Imaging Scan with 320 SlicesDynamic Volume CT In Double Low |
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| DOI： |
| 中文关键词: 低放射剂量 CCTA 低对比剂量 DSA |
| 英文关键词: Low radiation dose CCTA low contrast dose DSA |
| 基金项目:黑龙江省教育厅科学技术研究项目（12541282） |
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| 中文摘要: |
| 目的：通过与常规冠脉造影（Digital Signature Algorithm，DSA）对比评估双低扫描(低放射剂量，低造影剂量)方案在320 排动
态容积CT冠脉成像（coronary angiography with CT，CCTA）中应用的可行性。方法：选取2014 年5 月2015 年8 月完成CCTA双
低扫描30 例患者为双低组，双低组根据患者体重指数采取相应的管电压（BMI 重指数采取相应的管电压（BMI≤ 25 kg/m2：80 kv，
25 kg/m2 |
| 英文摘要: |
| Objective:To evaluate the feasibility of low dose and low contrast medium in the 320 row dynamic volume CT
Coronary Angiography (CCTA) compared with Conventional coronary angiography (DSA).Methods:30 patients who have completed
the CCTA scans from May 2014 to August 2015 as double low group. According to patients' body weight index of the double low group
to take appropriate tube voltage（BMI≤ 25 kg/m2: 80 kv, 25 kg/m228 kg/m2: 120 kv）. The concentration
of the contrast agent: 320 mgI/mL, Injection of contrast medium: 0.6 mL/kg, and meanwhile who completed DSA before and after the
CCTA in the two weeks as Control group, Additionally, other 30 patients who performed conventional CCTA as group conventional,
Tube voltage:120 kv, The concentration of the contrast agent: 370 mgI/mL, Injection of contrast medium: 65 mL.Results:Compared
with DSA, the sensitivity, specificity, positive predictive value, negative predictive value was 91%, 91%, 90%, 92% of CCTA in the
diagnosis of coronary stenosis, respectively. There was no statistical differences between DSA and CCTA. The effective radiation dose
was reduced about 62 percent of CCTA in comparation with conventional CCTA.Conclusion:The quality of image diagnosis in CCTA
is much the same to DSA, and the effective radiation dose was released significantly. |
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