Exposure to radioactive pollution sources is one of the main radiation sources in nuclear medicine department of hospital. Therefore, strengthening the radiation protection knowledge of nuclear medical staff and improving their awareness of radiation protection knowledge can effectively reduce unnecessary radiation exposure. The following is my collection of papers on radiation safety management in hospital nuclear medicine department, and I will share them with you.

Abstract: Nuclear medicine is one of the important departments in hospitals and medical institutions, which can provide effective diagnosis and treatment basis for patients. In recent years, with the continuous development of medical technology, the pace of development of nuclear medicine is also accelerating. Isotopes are gradually widely used in the field of health care, and are also widely used in the nuclear medicine department of hospitals. However, at the same time, with the application of isotopes, ionizing radiation will also be produced. Therefore, effective protection and management of radiation safety in nuclear medicine department of hospital can effectively protect the health of nuclear medicine staff and patients. In this paper, the author analyzed the deficiency of radiation safety protection and management in nuclear medicine department of a hospital at present, and discussed the corresponding management countermeasures, in order to provide help for the clinical work of nuclear medicine department in this hospital.

Key words: Department of Nuclear Medicine; Safety protection; Radiation; Management; Countermeasures

In recent years, with the continuous development of medical technology, nuclear medicine has developed rapidly. In the field of medical care, isotopes are gradually widely used, and they are widely used in hospital nuclear medicine [1]. Nuclear medicine is one of the important departments in hospitals and medical institutions, which can provide effective diagnosis and treatment basis for patients [2]. However, the application of isotopes can also produce ionizing radiation. At present, there are still some deficiencies in the protection and management of radiation safety in nuclear medicine departments of some hospitals [3]. This paper analyzes the deficiency of radiation safety protection and management in the nuclear medicine department of a hospital at present, and discusses the corresponding management countermeasures, with a view to managing the radiation safety in the nuclear medicine department of the hospital, ensuring the health of the staff and patients in the nuclear medicine department, and providing help for the clinical work in the nuclear medicine department of the hospital. Now make the following analysis.

Department of Nuclear Medicine of a Hospital 1 Radiation Detection

1. 1 radiation detection instruments and methods

This time, the nuclear medicine department of a hospital was tested in all directions to understand the radiation situation of the nuclear medicine department of the hospital. The model of radiation detector is BH3 103X-? A portable measuring instrument based on X-ray is used to measure the working site of nuclear medicine department. Select PCM- 100 (? 、? 、? ) to detect the surface pollution of nuclear medicine department; FJ-377 thermoluminescence dosimeter is selected for personal measurement.

1.2 analysis of radiological examination results in nuclear medicine department of our hospital

The test results show that in the nuclear medicine department of our hospital, radioactive sources mainly include unsealed sources and sealed sources. Unsealed sources are 99mTc source, 13 1I source and 125I source, and sealed sources are 137Cs source, 24 1Am source and 90Sr source. The measurement results are as follows:

(1) Specific kinetic energy rate of air: 0.08-0. 13 is used in sub-packaging room, radioactive source library, drug administration room, sub-packaging room operation post, bone density room, treatment room and radioimmunoassay room respectively? Gy/h、0. 13-0.24？ Gy/h、0.09-0.23？ Gy/h、3.20-4.0 1？ Gy/h、0. 1 1-0.20？ Gy/h、0. 1 1-0. 14？ Gy /h、0. 10-0. 13？ Gray per hour.

(2) Measurement results of surface pollution activity concentration in wards of nuclear medicine department: the activity concentrations of sub-packaging room, radioactive source bank, treatment room, dispensing room, operator and radioimmunoassay room are 0. 17-0.25Bq/cm2, 0.35-0.4 1Bq/cm2 and 0./kloc-respectively.

(3) There were 12 staff members who participated in the personal dose survey. The investigation results show that the effective dose per person per year is 0.07-2. 18mSv, which can be calculated by the longest working time of 2,000h/a. Among the workers who operate the 99mTc source, the maximum workload is 8.06mSv, which is higher than the individual annual dose constraint value of 5mSv.

(4) In this study, the average specific kinetic energy of air is 0.27 at the surface position of 100 cm applicator storage box. Gy/h is obviously lower than the national standard value, but the personal dose constraint value is obviously higher. Therefore, the nuclear medicine department of our hospital should put plexiglass protective glasses and protective screens into use as soon as possible, and adopt the multi-person rotation mode when not in use.

2 hospital nuclear medicine radiation safety protection and management countermeasures

2. 1 Rational layout of nuclear medicine department in hospital

In the layout of the work area of the nuclear medicine department of the hospital, the unsealed workplaces should be divided and graded in strict accordance with GB 1887 1 [4]. In radiation protection management, the workplace should be divided into supervision area and control area, that is, the second area management. The supervision area is the imaging room, marking laboratory, radioactive waste, diagnostic bed area and radionuclide storage area, and the control area is the drug delivery room, operating room and bed area where patients receive radionuclide treatment. When dividing the control area and the supervision area, the regional distribution should be rationally laid out and arranged. For example, in the layout of examination room and medicine dispensing room, the waiting room for diagnosis and medicine dispensing room should be separated, and the patient-specific bathroom should be set up. Radiation protection equipment must be used for protection when administering drugs in the examination room.

2.2 Strengthen the management of radionuclide waste treatment

In the management process of nuclear medicine department in hospital, it is an important measure to reduce radiation to strengthen the management of radioactive nuclide waste [5]. For the residual pollutant wastewater in the workplace of nuclear medicine department of the hospital, in the process of treatment, the wastewater should be stored in a decay pool for decay treatment, so that the radionuclide concentration of the wastewater is lower than the relevant standard value, and then the wastewater is discharged into the discharge pipeline; For the waste existing in the production process, activated carbon should be used for relevant filtration treatment before discharge, and the radionuclide activity of waste gas should be reduced before discharge treatment; High-concentration wastewater and used but residual stock solution should be collected and treated in a unified way, and discharged after the active concentration is reduced to qualified.

2.3 Strengthen the nuclear medical staff's attention to radiation protection.

Exposure to radioactive pollution sources is one of the main radiation sources in nuclear medicine department of hospital. Therefore, strengthening the radiation protection knowledge of nuclear medical staff and improving their awareness of radiation protection knowledge can effectively reduce unnecessary radiation exposure. Most workers don't fully understand the knowledge of radiation protection, so they don't pay attention to the importance and necessity of protective measures. In addition, radiation is invisible, which leads to workers not forming good habits. A large number of workers go in and out of the marking room at will without changing their shoes, and do not wear protective gloves to classify radioactive sources, which leads to high incidence of radioactive pollution. Therefore, the hospital should strengthen the publicity and education of nuclear medical staff's protection knowledge and improve their awareness of protection.

2.4 improve the hospital internal rules and regulations and management measures.

Within the unit, rules and regulations can ensure the smooth development of all work. Therefore, the hospital should strengthen the radiation protection and safety management of nuclear medicine department, improve the relevant system, and regularly train the staff of nuclear medicine department. The staff of nuclear medicine department are required to be familiar with and master the relevant national laws and regulations, and regularly train on-the-job radiation workers. For new employees, systematic pre-job training should be conducted before taking up their posts to strengthen their understanding of radiation protection safety and management. According to the characteristics of nuclear medicine department, a targeted and comprehensive emergency plan and effective protective measures are formulated for sudden radiation incidents. When the radiation incident inevitably occurs, the incident can be handled and controlled in time according to the emergency plan to prevent further deterioration of the incident.

3 discussion

Nuclear medicine is an important department in hospitals and medical fields, which has an important influence on the diagnosis and treatment of patients. The radiation protection and management level of nuclear medicine is obviously related to the work efficiency and quality of this department. Therefore, strengthening the rational layout of nuclear medicine in hospitals, strengthening the management of radioactive nuclide waste disposal, strengthening the attention of nuclear medicine staff to radiation protection, and actively improving the internal rules and regulations and management measures of hospitals are important measures to ensure the safety of nuclear medicine working environment.

refer to

Wang, Lou Yun, Wan Ling, et al. Investigation on radiation level of nuclear medicine operators and related places [J]. Modern Preventive Medicine, 2015,42 (4): 601-602.

Gao Fang, Gao Xiangdong, Liu Jiping, et al. Analysis and discussion on radiation health protection of clinical nuclear medicine in a hospital [J]. China Radiation Health, 2014,23 (2):140-143.

Gao Fengli, Liu Shujuan. Discussion on health management mode of nuclear medicine from radiation safety and protection [J]. Modern drug application in China, 2014,8 (22): 216-218.

Chen Yudao, Zhang Feng, Wu Chunxing, et al. Radiation protection and management of radionuclide therapy wards in nuclear medicine [J]. Chinese Journal of Nursing, 2014,49 (1): 574-576.

[5] Song Peifeng, Wang Xiaotao, Chen, et al. Discussion on the problems and countermeasures of radiation safety and protection management in hospital nuclear medicine department [J]. Radiation protection communication, 201,3 1 (4):16-1.

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