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| Ultrasonic Measurement Techniques Applied to Assay the Human Body Chest Wall Thickness and Tissue Element in Internal Radiation Individual Monitoring |
| WU Meng-meng1, Wang Jun-yan2, CHEN Ling1, PANG Hong-chao1 |
1. China Institute of Atomic Energy, Beijing 102413 China;
2. Beijing No.401 Hospital of China Nuclear Industry |
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Abstract Objective By using medical diagnostic ultrasonic imaging method,the chest wall thickness and component of radiation workers was measured to reduce the error of internal radiation dose brought by the uncertainty of human body chest wall attenuation coefficient.Methods We measure 26 people's chest wall thickness and component by medical diagnostic ultrasound and gather the images,analyze the data to get the content ratio of muscle and fat in the chest wall thickness.Results We transform the chest wall thickness which have different organization composition into muscle equivalent chest wall thickness by the formula to normalize the blocking effect of human body chest wall with different organizational composition to gamma and X-ray of different energy which emit from lung.Conclusion Measuring human body chest wall thickness and tissue composition by ultrasonic is more accurate than traditional formula computing method and can reduce the error of measurement result of lung counter by ±20%.It has great significance to estimation of internal radiation dose for it can greatly reduce the system error in vivo measurement.
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Received: 17 April 2016
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