The effect of ultrasonic measuring error on the therapeutic radiation dose of atrial septal defect during interventional therapy
10.3969/j.issn.1002-1671.2018.05.028
- VernacularTitle:超声测量误差对房间隔缺损介入治疗辐射剂量的影响
- Author:
Shunqiang CHEN
1
;
Zhong ZHANG
;
Ying GUO
;
Enfeng WANG
;
Qianli MA
Author Information
1. 河南省人民医院放射科
- Keywords:
atrial septal defect;
transthoracic echocardiography;
radiation dose
- From:
Journal of Practical Radiology
2018;34(5):756-758,785
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of measure accuracy of crevasse diameter of atrial septal defect (ASD) by transthoracic echocardiography (TTE) on radiation dose during interventional therapy.Methods 79 cases ASD with interventional therapy in our hospital were analyzed retrospectively,according to the times which we chosen occluder device on the basis of defect diameter by TTE,we divided those cases into three groups:group A,the occluder device chosen well,and it took only one time to block success (50 cases);group B,it took two times to block success (22 cases);group C,because of the measurement error,it needed three times to block success (7 cases).Following data were separately recorded:①measurement values of TTE,size of the occluder device and times of occluder device exchange;② radiation dose [cumulative radiation dose (AK,Gy),area dose product (DAP,Gy · cm2),fluoroscopic time (T,min)];③patient gender,age and body mass.Results All the cases were blocked success,the coincidence rate of TTE and occluder device were 62.67 ％,28 ％,9.33 ％,but there were significantly differences of AK,DAP and T in three groups (FAK=12.119,P=0.000;FDAp=8.241,P=0.001;FT =12.777,P=0.000).It showed that the radiation dose and T of group C were the largest and the longest,and group A were the least and the shortest,while the radiation dose and T of group B ranged between A and C groups.There was no statistically difference between radiation dose for different gender,age,body mass(P≥0.050).Conclusion The times of block and radiation dose is most influenced by the coincidence rate of TTE and occluder device.Increase of the coincidence rate may decrease the times of block and reduce the radiation dose for surgeon and patient.
