| 一站式低剂量扫描在胸部及腰椎QCT体检人群中的应用 |
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| 引用本文： | 舒意,杨沛,廖紫祾,李真林,唐静.一站式低剂量扫描在胸部及腰椎QCT体检人群中的应用[J].CT理论与应用研究,2022,31(2):244-250. |
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| 作者姓名： | 舒意 杨沛 廖紫祾 李真林 唐静 |
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| 作者单位： | 四川大学华西医院放射科, 成都610041 |
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| 摘 要： | 目的:探讨噪声指数结合自动管电流调节技术在胸部与腰椎QCT体检人群中的一站式扫描应用.方法:前瞻性收集来我院体检中心做胸部CT和腰椎QCT受检者100例,随机分两组(常规剂量组、低剂量组),其中胸部常规剂量组50例(噪声指数设置为NI=8.5),低剂量组50例(噪声指数设置为NI=14).分别记录两组受检者的身高、体重...
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| 关 键 词： | CT 低剂量 骨密度 |
| 收稿时间： | 2021-04-22 |
To Explore the Low-dose CT and QCT"One-stop-shop"Scan Technology for Physical Examination Crowd |
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| SHU Yi,YANG Pei,LIAO Zilin,LI Zhenlin,TANG Jing.To Explore the Low-dose CT and QCT"One-stop-shop"Scan Technology for Physical Examination Crowd[J].Computerized Tomography Theory and Applications,2022,31(2):244-250. |
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| Authors: | SHU Yi YANG Pei LIAO Zilin LI Zhenlin TANG Jing |
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| Institution: | Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China |
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| Abstract: | Objective: To explore the application of noise index combined with automatic tube current regulation technology in the one-stop scanning of chest and lumbar QCT physical examination. Method: 100 patients who unferwent thoracic CT and lumbar QCT scan in our medical examination were prospectively collected and randomly divided into two groups( conventional dose group and ow dose group). There were 50 patients in the conventianl group (noise index set to NI=8.5) and 50 patients in the low dose group (noise index set to NI=14). Their height, weight and BMI were recorded, as well as the mean BMD of L1, L2 in both radiation and low dose groups, and L1, L2 in the conventional dose group. The differences of radiation dose and mean bone mineral density between the two groups were compared. Results: The average scanning dose was 387.65 mGy in the conventional dose group and 73.18 mGy in the low dose group. There was statistical differences in radiation dose between the two groups. The mean bone mineral density (BMD) of L1 and L2 was 119.71 in the conventional dose group, and that of L1 and L2 was 123.65 in the low dose group. There was no statistical difference between the two groups. Conclusion: Low dose CT scan of thoracic and lumbar spine can not only meet the needs of lung screening and bone mineral density assessment but also greatly reduce radiation dose. It can be widely used in physical examination. |
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