CAJ | 학술논문

目的：评价单光子发射计算机断层显像(SPECT)检查过程中患者和照顾者的受照剂量及患者附近的周围剂量当量率，探讨SPECT检查过程中加强辐射防护的重要性。方法：采用InLight型光激发光(OSL)剂量计测量SPECT患者注射药物99Tcm后3 d内照顾者的个人剂量当量Hp(10)，用γ剂量率仪测量SPECT患者注射药物99Tcm后距患者不同距离及不同方向的周围剂量当量率H·*(10)。结果：SPECT患者佩戴的个人剂量当量Hp(10)在0.45～1.12 mSv之间，照顾者个人剂量当量Hp(10)在0.09～0.22 mSv之间。注射放射性药物99Tcm后患者体表周围剂量当量率较高，一定距离处的剂量率显著下降，注射后5.5 h的周围剂量当量率降至注射后即刻测量结果的15%～25%。结论：在SPECT检查过程中，患者注射放射性药物99Tcm后其周围辐射水平较高，应加强防护及管理，提高专业工作人员的防护意识。
목적：평개단광자발사계산궤단층현상(SPECT)검사과정중환자화조고자적수조제량급환자부근적주위제량당량솔，탐토SPECT검사과정중가강복사방호적중요성。방법：채용InLight형광격발광(OSL)제량계측량SPECT환자주사약물99Tcm후3 d내조고자적개인제량당량Hp(10)，용γ제량솔의측량SPECT환자주사약물99Tcm후거환자불동거리급불동방향적주위제량당량솔H·*(10)。결과：SPECT환자패대적개인제량당량Hp(10)재0.45～1.12 mSv지간，조고자개인제량당량Hp(10)재0.09～0.22 mSv지간。주사방사성약물99Tcm후환자체표주위제량당량솔교고，일정거리처적제량솔현저하강，주사후5.5 h적주위제량당량솔강지주사후즉각측량결과적15%～25%。결론：재SPECT검사과정중，환자주사방사성약물99Tcm후기주위복사수평교고，응가강방호급관리，제고전업공작인원적방호의식。
Objective: To investigate the dose to patients and carers and the ambient dose equivalent rate in the field of near patient after administered 99Tcm radionuclide labeled compound during SPECT examination in order to improve radiation protection management in nuclear medicine. Methods:Personal dose equivalent Hp(10) to patients and carers was measured with Inlight type optically stimulated luminescence(OSL) dosimeters during 3 days exposure from SPECT examination. Theγdose rate instrument was used to detect the ambient dose equivalentrate H·*(10)in the field of near patient after administered 99Tcm radionuclide in the different direction and distance of the patient. Results: Personal dose equivalent Hp(10) to patients and carers ranged 0.45 mSv~1.12mSv and 0.09mSv~0.22mSv respectively. It was showed higher Hp(10) to patients than carers. In addition the ambient dose equivalent rate H ·*(10) on surface of the patient was higher than that in a certain distance or post 5.5 hours from administered 99Tcm radionuclide. Conclusion:It is important to strength the radiological protection management in the nuclear medicine because of high radiation dose to patients after administered 99mTc radionuclide.