|本期目录/Table of Contents|

[1]卓 娜,马延贺,张 洪.双能CT肺灌注成像在诊断肺栓塞中的价值[J].天津医科大学学报,2016,22(01):44-47.
　ZHUO Na,MA Yan-he,ZHANG Hong.Value of dual energy CT pulmonary perfusion imaging in diagnosis of pulmonary embolism[J].Journal of Tianjin Medical University,2016,22(01):44-47.
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双能CT肺灌注成像在诊断肺栓塞中的价值(PDF)
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《天津医科大学学报》[ISSN:1006-8147/CN:12-1259/R]

卷:
22卷
期数:
2016年01期
页码:
44-47
栏目:
临床医学
出版日期:
2016-01-20

文章信息/Info

Title:
Value of dual energy CT pulmonary perfusion imaging in diagnosis of pulmonary embolism
文章编号:
1006-8147（2016）01-0044-04
作者:
?卓 娜1; 马延贺2; 张 洪2
（1．天津医科大学第二医院超声科，天津 300211；2．天津市胸科医院影像科，天津 300222）
Author(s):
ZHUO Na1;  MA Yan-he2;  ZHANG Hong2
?（1．Department of Ultrasound，The Second Hospital ， Tianjin Medical University，Tianjin 300211，China; 2 . Department of Radiology，Tianjin Chest Hospital,Tianjin 300222, China）
关键词:
肺栓塞体层摄影技术; X线计算机血管造影术; 双能量肺灌注成像; 双源CT
Keywords:
pulmonary embolism;  tomography technology; X-ray computed;  angiography dual-energy lung perfusion imaging;  dual-source
分类号:
R445
DOI:
-
文献标志码:
A
摘要:
?目的：评价双能CT（DECT）低对比剂肺灌注成像诊断肺动脉栓塞的图像质量及辐射剂量。方法：接受双源CT扫描的肺栓塞疑似患者290例，根据扫描方式不同分为两组：DECT检查组80例；常规检查组210例。分别以主观和客观法评价图像质量：主观评价法由两名影像科诊断医生以5分法评价图像质量；客观评价法采用测量信号噪声比（SNR）和对比度噪声比（CNR）。分别记录、计算两组受检者的辐射剂量。对两名影像科诊断医师的主观评级采用χ2检验。对辐射剂量、SNR和CNR的差异采用t检验。结果：两组患者的年龄、性别差异均无统计学意义。DECT肺灌注成像与常规CTPA成像的图像质量主观评级均在1级以上，两者的诊断效能、图像质量评分差别无统计学意义。两组间在SNR、CNR、辐射剂量均无统计学差异。结论：DECT低对比剂用量肺灌注成像所得的图像能够满足临床诊断需要，降低了受检者对比剂风险。
Abstract:
O bjective: To compare the radiation dose and image qualities of dual source CT in dual energy scan mode pulmonary perfusion imaging and conventional CT pulmonary artery angiography. Methods: Two hundred and ninety patients with suspected pulmonary embolism, according to the scanning mode, were divided into two groups: 80 cases underwent DECT examination; 210 cases underwent routine CTPA examination. Image quality evaluation of two groups from two radiology diagnoses, the image qualities was divided into 5 grades, by measuring the signal to noise ratio (SNR) and contrast to noise ratio (CNR). Radiation doses were recorded. The quality score of two groups were obtained by Chi square test. Differences in the radiation dose, SNR and CNR were acquired by t test. Results: Age, gender differences of two groups were not statistically significant. Dual energy images CT and conventional CTPA acquisition, reconstruction could promote the diagnosis, and the difference showed no statistical significance. Between the two groups in SNR, CNR showed no statistical difference. Conclusion: Dual energy CT with low dose contrast agent can promote clinical diagnosis, reducing the risk of the contrast agent.

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[9] 周运锋, 史河水, 崔立明, 等. 双源CT双能量肺灌注成像对肺栓塞的诊断和临床应用价值[J]. 放射学实践, 2012,27(1):36

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备注/Memo

备注/Memo:
作者简介 卓娜（1984-），女，医师，医学本科，研究方向：医学影像专业；通信作者：马延贺，E-mail: mayanhe2008@163.com。
更新日期/Last Update: 2016-01-25