分子影像学杂志2025，Vol.48Issue(3)：296-301,6.DOI:10.12122/j.issn.1674-4500.2025.03.07
X-CARE技术可降低头颅CT辐射剂量:基于体型特异性剂量估算值
Application of X-CARE technology in reducing radiation dose in head CT using specific-size dose estimation
摘要
Abstract
Objective To analyze the impact of using the fixed tube current technique,CARE Dose 4D,and X-CARE technique during head CT examinations on the radiation dose and image quality of the patients,and develop a head CT scanning protocol that can effectively safeguard radio sensitive organs.Methods We prospectively gathered ninety patients for head CT scans at Xuzhou First People's Hospital from May 2023 to Februray 2024 and randomly assigned them to three group,with 30 patients in each group,including the fixed tube current technique(group A),CARE Dose 4D(group B),and the X-CARE technique(group C).The variability of radiation dose in patients across the different groups was analyzed using volume CT dose index(CTDIvol),size-specific dose estimate(SSDE)and radiation dose of eye lens surface comparisons.Two radiologists with rich experience in film reading were used to perform the subjective score of image quality according to the five-point scale by double-blind method,and the differences of image quality among different groups were compared by using the SD,SNR and subjective score of the images.Results The CTDIvol of the A,B and C group were 49.61±0.40,33.85±3.20 and 32.40±3.11 mGy,respectively,SSDE were 34.26±1.77,28.08±5.34 and 27.29±5.30 mGy,respectively.The ocular surface doses were 6.76±0.46,3.41±0.40 and 2.05±0.73 mSv,respectively.Compared with fixed tube current,CARE Dose 4D and X-CARE technology reduced radiation dose CTDIvol by 31.76%and 34.69%,respectively,and SSDE by 36.55%and 38.34%,respectively.SSDE was 10.78%lower than CTDIvol.For image quality,the noise and SNR of the images using CARE Dose 4D and X-CARE techniques were lower than those of the fixed tube current group,but there was no statistically significant difference in subjective scores among the three groups of images(P>0.05).Conclusion X-CARE technology can effectively reduce the radiation dose of head CT scanning while guaranteeing image quality and protecting the sensitive organs in the eyes.关键词
CARE Dose 4D/X-CARE/体型特异性剂量估算/辐射剂量/图像质量Key words
CARE Dose 4D/X-CARE/size-specific dose estimate/radiation dose/image quality引用本文复制引用
王帆,曹伟,梁保辉,王静..X-CARE技术可降低头颅CT辐射剂量:基于体型特异性剂量估算值[J].分子影像学杂志,2025,48(3):296-301,6.基金项目
安徽省高等学校自然科学重点项目(KJ2021A0746) （KJ2021A0746）
