Abstract:Objective To investigate the feasibility and clinical application value of spectrum purification technology to reduce the radiation dose in CT guided microwave ablation (MWA). Methods A total of 60 patients who were diagnosed as pulmonary malignant tumor and needed to undergo MWA guided by CT were selected and randomly divided into experimental group (n=30, scanning with energy spectrum purification technology, scanning voltage of sn100 kV, reference current of 96 mAs) and control group (n=30, using conventional scanning technology, scanning voltage was 120 kV, reference current was 94 mAs), while the other scanning and reconstruction parameters were the same. The aortic CT value, image noise, signal to noise ratio (SNR), subjective image quality score, doctor operation time and radiation dose received by the two groups were compared. Results All patients successfully completed MWA guided by CT. The image noise of the experimental group was significantly higher than that of the control group [(13.80±1.71) vs. (7.28±1.23), P<0.001] , while the SNR was lower than that of the control group [(2.02±0.32) vs. (3.83±0.57), P<0.001]. There was no significant difference in aortic CT value, subjective image quality score and operation time between the two groups [(43.21±4.45) vs. (45.56±5.86), P=0.605| (3.37±0.61) vs. (3.68±0.58), P=0.194| (22.69±6.02) min vs.(21.93±4.63) min, P=0.687]. The total radiation dose of the experimental group was (0.89 ± 0.44) mSv, which was significantly lower than that of the control group (8.53 ± 4.26) mSv, P<0.001. Conclusion The use of energy spectrum purification technology can greatly reduce the radiation dose received by patients in lung tumor MWA under CT guidance while ensuring image quality and not increasing operating time.
张梁,沈加林,王军,江金华. 能谱纯化技术在降低CT寻|导下肺肿瘤微波消融术中辐射剂量的应用研究基于厂商条码和精准经费管控的医用耗材精细化管理研究[J]. 中国医疗设备, 2020, 35(10): 155-159.
ZHANG Liang, SHEN Jialin, WANG Jun, JIANG Jinhua. Clinical Value of Spectral Shaping Technology in Reducing the Radiation Dose of
CT-guided Lung Tumor Microwave Ablation. China Medical Devices, 2020, 35(10): 155-159.
Hertzanu Y,Ye X.Computed tomography-guided percutaneous microwave ablation: a new weapon to treat ground-glass opacity-lung adenocarcinoma[J].J Cancer Res Ther,2019,(15):265-266.