A Copper Shield for the Reduction of X-γ True Coincidence Summing in Gamma-ray Spectrometry

Byun, Jong-In The Korean Association for Radiation Protection 2018 방사선방어학회지 Vol.43 No.4

Background: Gamma-ray detectors having a thin window of a material with low atomic number can increase the true coincidence summing effects for radionuclides emitting X-rays or gamma-rays. This effect can make efficiency calibration or spectrum analysis more complicated. In this study, a Cu shield was tested as an X-ray filter to neglect the true coincidence summing effect by X-rays and gamma-rays in gamma-ray spectrometry, in order to simplify gamma-ray energy spectrum analysis. Materials and Methods: A Cu shield was designed and applied to an n-type high-purity germanium detector having an $X-{\gamma}$ summing effect during efficiency calibration. This was tested using a commercial, certified mixed gamma-ray source. The feasibility of a Cu shield was evaluated by comparing efficiency calibration results with and without the shield. Results and Discussion: In this study, the thickness of a Cu shield needed to avoid true coincidence summing effects due to $X-{\gamma}$ was tested and determined to be 1 mm, considering the detection efficiency desired for higher energy. As a result, the accuracy of the detection efficiency calibration was improved by more than 13% by reducing $X-{\gamma}$ summing. Conclusion: The $X-{\gamma}$ summing effect should be considered, along with ${\gamma}-{\gamma}$ summing, when a detection efficiency calibration is implemented and appropriate shielding material can be useful for simplifying analysis of the gamma-ray energy spectra.

방사선 조사 마우스에서 오가피의 면역활성 효과

김계엽,정현우,김경윤,Kim, Gye-Yeop,Jeong, Hyun-Woo,Kim, Kyung-Yoon 대한동의생리학회 2006 동의생리병리학회지 Vol.20 No.6

This experimental study was carried out to investigate the immunostimulating effect of Acanthopanax, as Oriental rhizomata herbs, on jejunal survival, endogenous spleen colony formation, apoptosis in jejunal crypt cells and lipid peroxidation in the liver of mice following Gamma-ray irradiation. The subject of this study includes 72 mice which were divided into each 7 groups. Acanthopanax experiment groups were Acanthopanax. Gamma-ray(lOGy), Acanthopanax. Gamma-ray(3Gy), Acanthopnax. Gamma-ray(1Gy), Gamma-ray control(1OGy), Gamma-ray control(3Gy), Gamma-ray control(1Gy), Normal groups. The results of this study were as follows : Treatment with Acanthopanax showed significantly increased(p<0.05) on the cell death apoptosis in crypt, intestine crypts survival of intestine in mice following low-dose(1Gy) Gamma-ray radiation. And that significantly increased(p<0.05) on jejunal crypt survival and reduced(p<0.05) on lipid peroxidation in mice following high-dose(1OGy) Gamma-ray radiation. The above results suggest that Acathopanax were immunostimulating effectively reduced Gamma-ray irradiation.

Performance Study of Gamma-ray Imager Using Gridded Collimator for Near-Field Imaging

J. H. Ha,김남영 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23

The performance of a gamma-ray imager was investigated that consists of one pair of gridded-collimators and non-position sensitive NaI(Tl) detector. A gamma-ray imager with rotation collimators do not require the position-sensitive detector in order to search for the position of gamma-ray sources. Such gamma-ray imager of simple operation has the use-values for constant surveillance in the restricted area at a radioactive facility. A modulation pattern which is produced by rotation collimators contains the information necessary to reconstruct the position of gamma-ray source. Hence a reconstruction algorithm must be applied to the experimental data with an ideal function of modulation pattern. A reconstructed images from a ^(133)Ba gamma-ray source has been obtained by using a simple back-projection algorithm. The reconstructed image which have nothing to do with energy selection shows the correspondence the location of gamma-ray source. The ideal image resolution is about 1.4˚ but the experimental image resolution shows about 2.5˚ FWHM. And also because the gridded collimator has a symmetrical structure and the ideal modulation function is completely identical to every half-rotation of the collimator, the mirror image is reconstructed on the image plane. The present gamma-ray imager is enough to obtain a rough location rather then a precise location of gamma-ray. Consequently, the method of rotation collimator has the possibility of getting an image without a position-sensitive detector.

⁶⁸Ga-DOTATOC PET/CT에서 Prompt Gamma Correction을 적용한 SUV의 평가

윤석환 ( Seok Hwan Yoon ) 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.1

⁶⁸Ga 방사성 핵종은 ⁶⁸Ge/⁶⁸Ga 제너레이터에서 생산되는 양전자 방출핵종으로서 PET 검사에 이용되는 방사성 핵종이다. ⁶⁸Ga은 67.8분의 반감기를 가지고 88.9 %의 β+ 붕괴와 11.1 %의 전자포획으로 ⁶⁸Zn으로 붕괴된다. β⁺ 붕괴 과정에서 87.7 %는 기저상태의 ⁶⁸Zn로 붕괴되며, 1.2 %는 여기상태의 ⁶⁸Zn로 붕괴된다. 여기상태의 ⁶⁸Zn은 1.077 Mev의 γ선을 방출하며 기저상태의 ⁶⁸Zn가 된다. 이때 방출되는 1.077 Mev의 γ선을 Prompt Gamma라 하며, Prompt Gamma-ray가 환자와 상호작용하게 되면 저에너지 γ선의 산란선이 발생되게 되는데 이 산란선이 PET의 동시계수 회로에 검출되어 질 수 있다. 이 연구의 목적은 ⁶⁸Ga을 이용하는 PET검사 중 신경내분비 종양진단에 사용되는 ⁶⁸Ga-DOTATOC PET/CT영상에 Prompt Gamma-ray 보정 전 후의 표준섭취계수(SUV)를 평가해 보고자 하였다. ⁶⁸Ga-DOTATOC PET/CT를 시행한 15명의 환자에 대해서 병변부위(Pancreas, Liver, Thoracic Spine, Brain)와 정상으로 섭취되는 조직(Pituitary, Lung, Liver, Spleen, Kidney, Intestine)의 SUVmax와 SUVmean을 비교하였으며, 임상영상의 정량적 평가를 위해 Target to Background Ratio(TBR)을 산출하여 비교하였다. Prompt Gamma-ray 보정 후 Thoracic Spine을 제외한 병변부위와 Pituitary를 제외한 정상조직에서 SUVmax, SUVmean은 높은 값을 나타내었으며, TBR은 Prompt Gamma-ray 보정 전 후 각각 51.51±49.28, 55.50±53.12 로 보정 후 높은 값을 나타냈다. (p<0.0001) ⁶⁸Ga was eluted from a ⁶⁸Ge/⁶⁸Ga radionuclide generator. 68Ga decays into 68Zn, with a half life=67.8min. The decay is 88.9 % by β+ and 11.1 % by EC. The main β+ decay (87.7 %) is to the ground level of ⁶⁸Zn and it is a pure positron emission branch. A small fraction decays β+ (1.2 %) into an excited level of ⁶⁸Zn, which promptly decays into the ground level with a γ (1.077 Mev). This can constitute prompt gamma contamination in the PET data, if the 1.077 Mev γ has a scatter interaction in the patient, and generates a lower energy γ in coincidence with the positron annihilation pair. The purpose of this study was to evaluate standardized uptake value(SUV) before and after applying prompt gamma rays correction on ⁶⁸Ga-DOTATOC PET/CT image. Fifty patient underwent PET/CT 1 hour after injection of the ⁶⁸Ga-DOTATOC. The SUVmax and SUVmean of lesions and normal tissues (Pituitary, Lung, Liver, Spleen, Kidney, Intestine) were evaluated before and after applying prompt gamma correction on 68Ga-DOTATOC PET/CT image. Additionally, the SUVmax of each lesions and SUVmean of the soft tissues were measured on images. and target to background ratios (TBR) were calculated as quantitative indices. Among 15 patients, 25 of lesions (Pancreas, Liver, Thoracic Spine, Brain) with increased uptake on ⁶⁸Ga-DOTATOC PET/CT image. SUVmax and SUVmean were increased in lesion site and normal tissue after prompt gamma rays correction. TBR was 51.51 ± 49.28 and 55.50 ± 53.12 before and after prompt gamma rays correction, respectively. (p<0.0001)

68Ga-DOTATOC PET/CT에서 Prompt Gamma Correction을 적용한 SUV의 평가

윤석환 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.1

68Ga was eluted from a 68Ge/68Ga radionuclide generator. 68Ga decays into 68Zn, with a half life=67.8min. The decay is 88.9 % by β+ and 11.1 % by EC. The main β+ decay (87.7 %) is to the ground level of 68Zn and it is a pure positron emission branch. A small fraction decays β+ (1.2 %) into an excited level of 68Zn, which promptly decays into the ground level with a γ (1.077 Mev). This can constitute prompt gamma contamination in the PET data, if the 1.077 Mev γ has a scatter interaction in the patient, and generates a lower energy γ in coincidence with the positron annihilation pair. The purpose of this study was to evaluate standardized uptake value(SUV) before and after applying prompt gamma rays correction on 68Ga-DOTATOC PET/CT image. Fifty patient underwent PET/CT 1 hour after injection of the 68Ga-DOTATOC. The SUVmax and SUVmean of lesions and normal tissues (Pituitary, Lung, Liver, Spleen, Kidney, Intestine) were evaluated before and after applying prompt gamma correction on 68Ga-DOTATOC PET/CT image. Additionally, the SUVmax of each lesions and SUVmean of the soft tissues were measured on images. and target to background ratios (TBR) were calculated as quantitative indices. Among 15 patients, 25 of lesions (Pancreas, Liver, Thoracic Spine, Brain) with increased uptake on 68Ga-DOTATOC PET/CT image. SUVmax and SUVmean were increased in lesion site and normal tissue after prompt gamma rays correction. TBR was 51.51 ± 49.28 and 55.50 ± 53.12 before and after prompt gamma rays correction, respectively. (p<0.0001) 68Ga 방사성 핵종은 68Ge/68Ga 제너레이터에서 생산되는 양전자 방출핵종으로서 PET 검사에 이용되는 방사성 핵종이다. 68Ga은 67.8분의 반감기를 가지고 88.9 %의 β+ 붕괴와 11.1 %의 전자포획으로 68Zn으로 붕괴된다. β+ 붕괴 과정에서 87.7 %는 기저상태의 68Zn로 붕괴되며, 1.2 %는 여기상태의 68Zn로 붕괴된다. 여기상태의 68Zn은 1.077 Mev의 γ선을 방출하며 기저상태의 68Zn가 된다. 이때 방출되는 1.077 Mev의 γ선을 Prompt Gamma라 하며, Prompt Gamma-ray가 환자와 상호작용하게 되면 저에너지 γ선의 산란선이 발생되게 되는데 이 산란선이 PET의 동시계수 회로에 검출되어 질 수 있다. 이 연구의 목적은 68Ga을 이용하는 PET검사 중 신경내분비 종양진단에 사용되는 68Ga-DOTATOC PET/CT영상에 Prompt Gamma-ray 보정 전 후의 표준섭취계수(SUV)를 평가해 보고자 하였다. 68Ga-DOTATOC PET/CT를 시행한 15명의 환자에 대해서 병변부위(Pancreas, Liver, Thoracic Spine, Brain)와 정상으로 섭취되는 조직(Pituitary, Lung, Liver, Spleen, Kidney, Intestine)의 SUVmax와 SUVmean을 비교하였으며, 임상영상의 정량적 평가를 위해 Target to Background Ratio(TBR)을 산출하여 비교하였다. Prompt Gamma-ray 보정 후 Thoracic Spine을 제외한 병변부위와 Pituitary를 제외한 정상조직에서 SUVmax, SUVmean은 높은 값을 나타내었으며, TBR은 Prompt Gamma-ray 보정 전 후 각각 51.51±49.28, 55.50±53.12로 보정 후 높은 값을 나타냈다. (p<0.0001)

Evaluation of Standardized Uptake Value applying Prompt Gamma Correction on 68Ga-DOTATOC PET/CT Image

Seok Hwan Yoon 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.1

68Ga 방사성 핵종은 68Ge/68Ga 제너레이터에서 생산되는 양전자 방출핵종으로서 PET 검사에 이용되는 방사성 핵종이다. 68Ga은 67.8분의 반감기를 가지고 88.9 %의 β+ 붕괴와 11.1 %의 전자포획으로 68Zn으로 붕괴된다. β+ 붕괴 과정에서 87.7 %는 기저상태의 68Zn로 붕괴되며, 1.2 %는 여기상태의 68Zn로 붕괴된다. 여기상태의 68Zn은 1.077 Mev의 γ선을 방출하며 기저상태의 68Zn가 된다. 이때 방출되는 1.077 Mev의 γ선을 Prompt Gamma라 하며, Prompt Gamma-ray가 환자와 상호작용하게 되면 저에너지 γ선의 산란선이 발생되게 되는데 이 산란선이 PET의 동시계수 회로에 검출되어 질 수 있다. 이 연구의 목적은 68Ga을 이용하는 PET검사 중 신경내분비 종양진단에 사용되는 68Ga-DOTATOC PET/CT영상에 Prompt Gamma-ray 보정 전 후의 표준섭취계수(SUV)를 평가해 보고자 하였다. 68Ga-DOTATOC PET/CT를 시행한 15명의 환자에 대해서 병변부위(Pancreas, Liver, Thoracic Spine, Brain)와 정상으로 섭취되는 조직(Pituitary, Lung, Liver, Spleen, Kidney, Intestine)의 SUVmax와 SUVmean을 비교하였으며, 임상영상의 정량적 평가를 위해 Target to Background Ratio(TBR)을 산출하여 비교하였다. Prompt Gamma-ray 보정 후 Thoracic Spine을 제외한 병변부위와 Pituitary를 제외한 정상조직에서 SUVmax, SUVmean은 높은 값을 나타내었으며, TBR은 Prompt Gamma-ray 보정 전 후 각각 51.51±49.28, 55.50±53.12로 보정 후 높은 값을 나타냈다. (p<0.0001) 68Ga was eluted from a 68Ge/68Ga radionuclide generator. 68Ga decays into 68Zn, with a half life=67.8min. The decay is 88.9 % by β+ and 11.1 % by EC. The main β+ decay (87.7 %) is to the ground level of 68Zn and it is a pure positron emission branch. A small fraction decays β+ (1.2 %) into an excited level of 68Zn, which promptly decays into the ground level with a γ (1.077 Mev). This can constitute prompt gamma contamination in the PET data, if the 1.077 Mev γ has a scatter interaction in the patient, and generates a lower energy γ in coincidence with the positron annihilation pair. The purpose of this study was to evaluate standardized uptake value(SUV) before and after applying prompt gamma rays correction on 68Ga-DOTATOC PET/CT image. Fifty patient underwent PET/CT 1 hour after injection of the 68Ga-DOTATOC. The SUVmax and SUVmean of lesions and normal tissues (Pituitary, Lung, Liver, Spleen, Kidney, Intestine) were evaluated before and after applying prompt gamma correction on 68Ga-DOTATOC PET/CT image. Additionally, the SUVmax of each lesions and SUVmean of the soft tissues were measured on images. and target to background ratios (TBR) were calculated as quantitative indices. Among 15 patients, 25 of lesions (Pancreas, Liver, Thoracic Spine, Brain) with increased uptake on 68Ga-DOTATOC PET/CT image. SUVmax and SUVmean were increased in lesion site and normal tissue after prompt gamma rays correction. TBR was 51.51 ± 49.28 and 55.50 ± 53.12 before and after prompt gamma rays correction, respectively. (p<0.0001)

100-MeV 양성자 빔을 이용하여 169Tm(p,3n)167Yb 반응에 의해 생성된 167Yb 방사성동위원소에서 방출되는 감마선 스펙트럼 비교 연구

이삼열 한국방사선학회 2022 한국방사선학회 논문지 Vol.16 No.7

The measurement of branching ratio of 167Yb radioactive isotopes from gamma-ray spectrum of 169Tm(p,3n)167Yb reaction were performed by using a 100-MeV proton linear accelerator of the Korea Multi-purpose Accelerator Complex (KOMAC). The 167Yb isotope has a half-life of 17.5 minutes and decays to 169Tm. The gamma rays generated from the 167Yb isotope were measured using an HPGe detector gamma ray spectroscopy system. The energy calibration of the detector and the efficiency measurement of the detector were determined using a standard source. The gamma rays of known main energy (62.9, 106.2, 113.3, 143.5 and 176.3 keV) were measured. On the other hand, information about the intensity of the generated gamma rays is very inaccurate. Therefore, in this study, the decay strength of the main gamma rays was accurately measured. Overall, it was different from the previously known results, and in particular, it was found that the intensity of the main decay gamma ray, such as the 113.3 and 106.2 keV gamma ray, was overestimated, and it was found that the gamma ray, such as 62.9, 116.7 and 143.5 keV was underestimated. The present results are considered to be important information in the fields of nuclear fusion, astrophysics and nuclear physics in the future. 양성자과학연구단의 100-MeV 양성자선형가속기의 양성자를 사용하여 천연 169Tm과 핵반응을 일으켜 167Yb 방사성동위원소를 생성하였다. 생성된 동위원소는 17.5분의 반감기를 가지며 167Tm로 붕괴한다. 이때 발생하는 감마선을 HPGe 검출시스템을 사용하여 측정하였다. 검출기의 에너지 교정 및 검출기의 효율 측정은 표준선원을 사용하여 결정하였다. 기존에 알려진 Table of Isotopes의 주요 감마선 에너지는 모두 측정되었다. 한편, 현재까지 알려진 발생되는 감마선의 강도에 대한 정보는 매우 부정확한 상황이다. 따라서 본 연구를 통하여 주요 감마선에 대한 붕괴 강도를 정확하게 측정하였다. 전체적으로 기존에 알려져 있던 결과들과 상이한 차이를 보였으며 특히 113.3 및 106.2 keV 감마선 같은 주 붕괴 감마선의 강도들이 과대평가 되었다는 사실을 알게 되었고 62.9, 116.7 및 143.56 keV의 감마선 들은 과소평가 된 감마선들임을 알게 되었다. 본 연구의 결과는 핵융합 연구, 천체 물리학 및 핵물리 분야에 있어서 중요한 정보가 될 것으로 생각된다.

기내$\gamma$-선 처리에 의한 감(Diospyros kaki Thunb.) 돌연변이 유기

고갑천 한국식물생명공학회 2000 식물생명공학회지 Vol.27 No.2

This study was carried out to know the optimum dose of gamma-ray for the induction of mutation in vitro and the characteristics of the mutants induced by gamma-ray in persimmon (Diospyros kaki Thunb.). The LD50 (50% lethal dose) for in vitro shoots of the cultivar, Nishimurawase was between 1 krad and 2 krad and about 1 krad for the cultivar, Ichikikeijiro. As the dose of gamma-ray increased, the length of shoots decreased and necrosis of buds increased. For the cultivar, Nishmurawase, 37.5∼58.3% shoots rooted and the rooting rate and the number of roots per shoot was low in high gamma-ray. The irradiated young plants which were grown in the growth cabinet for 6 weeks were shorter in shoot length and had more branches than non-irradiated plants. The survival rate of irradiated plants grown in the green house for 3 months was 33%, while 77% for control plants. 감 돌연변이 획득을 위해 기내배양 신초에 ${\gamma}$-선을 조사하여 변이유기를 위한 적정 선량, ${\gamma}$-선 조사 식물체의 기내 발근 및 생육 특성을 조사한 결과는 다음과 같다. 감 돌연변이 유기를 위한 적정한 조사 선량 (LD$_{50}$)은 서촌조생 품종에서 1 krad와 2 krad사이이었고, 일목계차랑 품종은 1 krad이었다. ${\gamma}$-선을 조사한 신초를 1차,2차, 3차에 걸쳐 계대배양하는 각 기간의 기내 생육상태를 보면 ${\gamma}$-선량이 증가할수록 기내에서 생장한 신초의 길이가 감소하였으며, 신초의 정아가 가장 장애를 많이 받았다. 서촌조생 품종에서 신초의 37.5~58.3% 정도가 발근되었고 발근율은 2 krad 처리에서는 가장 낮았다. ${\gamma}$-선 조사선량이 높아지면 발근율과 뿌리의 발생수가 줄어들었다. 순화한 뒤 6주 동안 생장상에서 생육한 ${\gamma}$-선 조사 개체는 무처리 개체의 묘고가 6.0 cm인데 비해 2krad 처리개체는 평균 묘고는 2.6 cm에 불과하였다. 또한 발생한 가지의 수도 무처리에서는 1.0개인데 비해 2krad에서는 1.8 개로 많았다. 온실 생육시에서 ${\gamma}$-선 처리선량이 높았던 개체는 처리되지 않았거나 낮았던 개체에 비해 묘고가 작고 분지수가 많았으며, 생육상태도 부진하여 생육 중에 33%정도만 생존하고 나머지는 고사하였다.다.

Radio Sensitivity of Cowpea Plants after Gamma-Ray and Proton-Beam Irradiation

Ryulyi Kang,EunJuSeo,김규태,박아론,김운지,강시용,하보근 한국육종학회 2020 Plant Breeding and Biotechnology Vol.8 No.3

Cowpea (Vigna unguiculata (L.) Walp.) is one of the important legume crops in which all stages of plant growth are used in human food and animal feed. In this study, morphological and biochemical changes were investigated in cowpea plants exposed to proton-beams and gamma-rays. ‘Okdang’ cultivar seeds were irradiated with 100, 200, 300, 400, and 500 Gy of gamma-rays and proton-beams. The gamma-ray and proton-beam irradiations significantly delayed emergence period, but had small effects on emergence rates. Compared to a control, the proton-beam treatments showed a significant decrease in survival rate above 200 Gy. The gamma-ray treatments significantly reduced survival rate above 300 Gy. The Lethal Dose 50 (LD50) for both irradiations were 200-300 Gy. Plant height and fresh shoot weight tended to decrease with increasing radiation levels. The Reduction Dose 50 (RD50) of plant height was between 100 and 200 Gy for the proton-beam and 200 to 300 Gy for the gamma-ray treatments. The RD50 of fresh shoot weight was expected to be 500 Gy or higher for the proton-beam and gamma-ray treatments. The malonaldehyde (MDA) content in both treatments were slightly decreased at 200 Gy compared to a control, but increased at 300 Gy. Overall, antioxidant enzymes reacted more to proton-beams than to gamma-rays. However, gamma-rays appear to have a greater effect on chlorophyll content than protonbeams. Our research will be valuable as a basic research comparing the mutagenic effects on cowpea induced by two ionizing radiations.

중성자, 감마선, 엑스선 방사선 측정 및 통합 제어 시스템 개발

고태영,이주현,이승호 한국전기전자학회 2017 전기전자학회논문지 Vol.21 No.4

In this paper, we propose an integrated control system that measures neutrons, gamma ray, and x-ray. The proposed system is able to monitor and control the data measured and analyzed on the remote or network, and can monitor and control the status of each part of the system remotely without remote control. The proposed system consists of a gamma ray/x-ray sensor part, a neutron sensor part, a main control embedded system part, a dedicated display device and GUI part, and a remote UI part. The gamma ray/x-ray sensor part measures gamma ray and x-ray of low level by using NaI(Tl) scintillation detector. The neutron sensor part measures neutrons using Proportional Counter Detector(low-level neutron) and Ion Chamber Type Detector(high-level neutron). The main control embedded system part detects radiation, samples it in seconds, and converts it into radiation dose for accumulated pulse and current values. The dedicated display device and the GUI part output the radiation measurement result and the converted radiation amount and radiation amount measurement value and provide the user with the control condition setting and the calibration function for the detection part. The remote UI unit collects and stores the measured values ​​and transmits them to the remote monitoring system. In order to evaluate the performance of the proposed system, the measurement uncertainty of the neutron detector was measured to less than ± 8.2% and the gamma ray and x-ray detector had the uncertainty of less than 7.5%. It was confirmed that the normal operation was not less than ±15 percent of the international standard. 본 논문에서는 중성자, 감마선, 엑스선 등의 방사선을 측정하는 통합 제어 시스템을 제안한다. 제안하는 시스템은 원격 또는 네트워크상으로 측정 및 분석한 데이터를 디스플레이를 통해 모니터링 및 제어할 수 있는 장비로서, 현장에 가지 않고도 시스템 각 구성 부분의 상태를 보고 변경하여 원격으로 감시 및 관리할 수 있다. 제안하는 시스템은 감마선/엑스선 센서부, 중성자 센서부, 주제어 임베디드 시스템부, 전용 디스플레이 장치 및 GUI부, 원격 UI부 등으로 구성된다. 감마선/엑스선 센서부는 NaI(Tl) Scintillation Detector를 사용하여 저준위의 감마선 및 엑스선을 측정한다. 중성자 센서부는 Proportional Counter Detector(저준위 중성자)와 Ion Chamber Type Detector(고준위 중성자)를 사용하여 중성자를 측정한다. 주제어 임베디드 시스템부는 방사선을 검출하여 초단위로 샘플링하고 누적된 펄스 및 전류값에 대한 방사선량으로 변환한다. 전용 디스플레이 장치 및 GUI부는 방사선 측정 결과와 변환된 방사선량 및 방사능량 측정 수치를 출력하고, 사용자에게 제어 조건 설정 및 검출부에 대한 캘리브레이션 기능을 제공한다. 원격 UI부는 측정된 값들을 취합, 저장하여 원격 감시 시스템에 전달한다. 제안된 시스템의 성능을 평가하기 위하여 공인시험기관에서 실험한 결과는 중성자 검출부는 ±8.2% 이하의 측정 불확도가 측정되었고, 감마선, 엑스선 검출부는 7.5%이하의 불확도가 측정되어 국제 표준인 ±15% 이하에서 정상동작 됨이 확인되었다.