担当区分：筆頭著者,　最終著者,　責任著者   記述言語：日本語   出版者・発行元：(公社)日本アイソトープ協会  

粒子線治療におけるビームの可視化は,照射領域のずれをなくすことを可能とし,安全性の高い治療を行うために有用な手段である。著者らは,放射線診断の現場に広く用いられるイメージングプレートを用いて,制動放射線を指標としたビームイメージングを行った。その結果,高解像度なビーム像を得ることに成功した。さらに,得られた画像から飛程を推定する手法を開発し,標準偏差2.5mmの精度で治療用炭素線の飛程の推定が可能であることが示唆された。(著者抄録)

担当区分：筆頭著者,　最終著者,　責任著者   記述言語：英語   出版者・発行元：(一社)日本放射線影響学会  

植込み型心臓電気デバイス(CIED)装着患者における、炭素イオン線治療(CIRT)の安全性について、後向きに検討した。2010年6月～2019年12月にかけ、当院でCIRTが施行されたCIED装着患者20例を調査対象とし、CIRTを2回行った2例を含む22例(男性15例、女性7例、年齢61～94歳)の患者データから、CIRT治療下ならびに経過観察期間に発生したCIEDの誤作動を調べ、CIRTによるリスクをモデルシミュレーションにより評価した。その結果、CIRT治療下/経過観察期間いずれにおいても、CIEDの誤動作は検出されなかった。また、モンテカルロシミュレーションにより、CIRTにより照射野に、中性子が一定数もしくは高レベルで産生され、CIEDと照射野間の距離が長くなると、CIEDにおける中性子量は照射野内よりも少なくなることが明らかにされた。本研究結果から、CIRTはCIED装着患者に対し安全に適用可能ではあるが、CIRTによるCIEDの誤動作リスクを考慮して適用することが肝要と考えられた。

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.7759/cureus.83835

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP Publishing  

Abstract

Secondary electron bremsstrahlung (SEB) has been proposed for range verification in particle therapy. However, the uncertainty in range-shift estimation due to high statistical noise under small numbers of carbon ion irradiation remains unclear. This simulation study evaluated the uncertainty of SEB-based range-shift estimations under conditions with limited numbers of carbon ions. The SEB images were generated by irradiating an acrylic target with monoenergetic carbon-ion beams and calculating the energy deposited onto a cadmium telluride pixel detector in simulation. Estimated range shifts were derived from the obtained SEB images using our proposed range-shift estimation method. As a result, the uncertainty was 1.4 mm for 10⁸ ions and 4.4 mm for 10⁷ ions. The results suggested that improving the sensitivity of the detector is effective in reducing the uncertainty.

DOI： 10.35848/1347-4065/adc21b

その他リンク： https://iopscience.iop.org/article/10.35848/1347-4065/adc21b/pdf

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Abstract

Thermal neutrons generated in the body during proton beam therapy (PBT) can be used to cause boron neutron capture reactions and have recently been proposed as neutron capture enhanced PBT (NCEPBT). However, the cell killing effect of NCEPBT remains underexplored. Here, we show an increase in the cell killing effect of NCEPBT. Using Monte Carlo simulations, we showed that neutrons generated by proton beam irradiation are uniformly spread on tissue culture plates. Human salivary gland tumor cell line (HSG), human osteosarcoma cell line (MG63), human tongue squamous cell carcinoma cell line (SAS), and human malignant melanoma cell line (G-361) were irradiated with X-rays, proton beams, and proton beams with ¹⁰B-enriched boronophenylalanine (boron concentration of 20 and 80 ppm). The relative biological effectiveness (RBE) values of proton beams alone, proton beams with 20 ppm boron, and proton beams with 80 ppm boron for HSG, MG63, SAS, and G-361 were 1.02, 1.07, and 1.23; 1.01, 1.08, and 1.44; 1.05, 1.09, and 1.46; and 1.04, 1.13, and 1.63, respectively. NCEPBT with high boron concentration showed high RBE and a high sensitizing effect. Our results confirm an increase in the cell killing effect of NCEPBT, should aid in its clinical use, and warrant its further investigation.

DOI： 10.1038/s41598-024-79045-3

その他リンク： https://www.nature.com/articles/s41598-024-79045-3

記述言語：英語   掲載種別：研究論文（学術雑誌）  

A compact, convenient dosimeter device for a convenient dose-distribution profiling tool were developed using aluminum-enriched phosphate glass. The composition of the phosphate glass were modified by adding an additional 0.2 mol % aluminum impurity, which allowed the phosphate glass to be used as a real-time scintillator with broadband radioluminescence under various types of radiation exposure, including X-rays, without large build-up effects. Real-time radiation monitoring was accomplished on a submillimeter scale by using aluminum-enriched phosphate glass beads. Ion beam analysis confirmed that the aluminum-enriched phosphate glass contained no heavy elements. Optical fiber dosimetry based on the aluminum-enriched phosphate glass was demonstrated, and stable radioluminescence was visualized under X-ray irradiation.

DOI： 10.1016/j.nimb.2024.165447

Scopus

記述言語：英語   掲載種別：研究論文（学術雑誌）  

A thin diamond membrane energy-dispersive dosimeter 50 μm thick was fabricated for estimating clinical dose distribution. In contrast to conventional semiconductors, diamond wide-bandgap semiconductors are expected to have excellent radiation tolerance and biological compatibility based on the linear relationship of stopping power ratio for clinical carbon particles. Linear energy transfer (LET) spectra were obtained along with the Bragg curve for a clinical carbon beam generated at Gunma University Heavy Ion Medical Center. The relative biological effectiveness (RBE) distributions were estimated from the LET spectra for both the mono-energy and spread-out Bragg peak irradiation configurations. The diamond detector was also used as a solid ionization chamber to obtain the radiation-induced current (RIC) distribution, which represents the physical dose distribution. The clinical dose distribution was estimated from the RIC and RBE distributions as proof of concept for the clinical carbon beam therapy field with a single-chip diamond energy-dispersive dosimeter.

DOI： 10.1016/j.nimb.2024.165430

Scopus

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.nimb.2024.165384

担当区分：筆頭著者,　最終著者,　責任著者   記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

担当区分：筆頭著者,　最終著者,　責任著者   記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Institute of Electrical and Electronics Engineers (IEEE)  

DOI： 10.1109/ojemb.2024.3358989

担当区分：筆頭著者,　最終著者,　責任著者   記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Abstract

Boron neutron capture therapy (BNCT) is a high-dose-intensive radiation therapy that has gained popularity due to advancements in accelerator neutron sources. To determine the dose for BNCT, it is necessary to know the difficult-to-determine boron concentration and neutron fluence. To estimate this dose, we propose a method of measuring the prompt γ-rays (PGs) from the boron neutron capture reaction (BNCR) using a Compton camera. We performed a fundamental experiment to verify basic imaging performance and the ability to discern the PGs from 511 keV annihilation γ-rays. A Si/CdTe Compton camera was used to image the BNCR and showed an energy peak of 478 keV PGs, separate from the annihilation γ-ray peak. The Compton camera could visualize the boron target with low neutron intensity and high boron concentration. This study experimentally confirms the ability of Si/CdTe Compton cameras to image BNCRs.

DOI： 10.1038/s41598-023-49955-9

その他リンク： https://www.nature.com/articles/s41598-023-49955-9

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.1109/nssmicrtsd49126.2023.10338039

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.nimb.2023.06.013

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.nimb.2023.04.009

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Anticancer Research USA Inc.  

DOI： 10.21873/anticanres.16468

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.apradiso.2023.110753

Scopus

PubMed

担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

Carbon-ion radiotherapy (CIRT) is one of the most effective radiotherapeutic modalities. This study aimed to select robust-beam configurations (BC) by water equivalent thickness (WET) analysis in passive CIRT for pancreatic cancer. The study analyzed 110 computed tomography (CT) images and 600 dose distributions of eight patients with pancreatic cancer. The robustness in the beam range was evaluated using both planning and daily CT images, and two robust BCs for the rotating gantry and fixed port were selected. The planned, daily, and accumulated doses were calculated and compared after bone matching (BM) and tumor matching (TM). The dose-volume parameters for the target and organs at risk (OARs) were evaluated. Posterior oblique beams (120-240°) in the supine position and anteroposterior beams (0° and 180°) in the prone position were the most robust to WET changes. The mean CTV V95% reductions with TM were -3.8% and -5.2% with the BC for gantry and the BC for fixed ports, respectively. Despite ensuring robustness, the dose to the OARs increased slightly with WET-based BCs but remained below the dose constraint. The robustness of dose distribution can be improved by BCs that are robust to ΔWET. Robust BC with TM improves the accuracy of passive CIRT for pancreatic cancer.

DOI： 10.3390/cancers15092520

PubMed

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP Publishing  

Abstract

Non-invasive range measurement of particle beams is important to prevent deviation of the irradiated area in particle therapy. In this study, we made an experiment of imaging carbon-ion beams by setting the projection ranges into an acrylic target from 4.29 cm to 7.65 cm by a pitch of 0.21 cm. Secondary electron bremsstrahlung (SEB) generated on the beam trajectories were detected for the imaging by use of a pinhole camera system consisting of a pinhole collimator and a position-sensitive cadmium-telluride semiconductor detector (CdTe imager). Beam images were acquired, and their profiles along the longitudinal axis were numerically analyzed, to obtain a suitable parameter that was strongly correlated with the set range. Then we could propose a scheme to measure the particle beam range in the target during irradiation by use of the CdTe imager. As a result, the range shift can be measured in the case of the acrylic target with an accuracy of 0.1 cm.

DOI： 10.1088/1748-0221/18/04/c04008

その他リンク： https://iopscience.iop.org/article/10.1088/1748-0221/18/04/C04008/pdf

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Oxford University Press (OUP)  

Abstract

The strong cell killing effect of high linear energy transfer (LET) carbon ions is dependent on lethal DNA damage. Our recent studies suggest that induction of clusters of double-strand breaks (DSBs) in close proximity is one of the potential mechanisms. However, the relationship between LET, the degree of DSB clustering and the cell killing effect of carbon ions remains unclear. Here, we used high-resolution imaging technology to analyze the volume of γH2AX foci induced by monoenergetic carbon ions with a clinically-relevant range of LET (13–100 keV/μm). We obtained data from 3317 γH2AX foci and used a gaussian function to approximate the probability (p) that 1 Gy-carbon ions induce γH2AX foci of a given volume (vth) or greater per nucleus. Cell killing effects were assessed in clonogenic assays. The cell killing effect showed high concordance with p at vth = 0.7 μm3 across various LET values; the difference between the two was 4.7% ± 2.2%. This relationship was also true for clinical carbon ion beams harboring a mixed LET profile throughout a spread-out Bragg peak width (30–120 mm), with the difference at vth = 0.7 μm3 being 1.6% ± 1.2% when a Monte Carlo simulation-derived dose-averaged LET was used to calculate p. These data indicate that the cell killing effect of carbon ions is predictable by the ability of carbon ions to induce γH2AX foci containing clustered DSBs, which is linked to LET, providing the biological basis for LET modulation in the planning of carbon ion radiotherapy.

DOI： 10.1093/jrr/rrac098

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP Publishing  

Abstract

The purpose of this study is to evaluate the effect of a lead radiation shield on the ability of a beam imaging device consist of an imaging plate (IP) and a collimator by Monte Carlo simulations. Simulations were performed using PHITS. A carbon-ion beam was injected to an acrylic target. A tungsten collimator having a pinhole was placed at the distance of 31.2 cm from the beam. A lead radiation shield was placed on the tungsten collimator. An IP was placed under the collimator. Beam images were acquired by recording the position distribution of energy deposition on the IP. We confirmed that therapeutic carbon-ion beam images could be acquired using the imaging device combining the IP and collimator. It was found that removal of the lead shield had no effect on the imaging results.

DOI： 10.1088/1748-0221/18/01/c01071

その他リンク： https://iopscience.iop.org/article/10.1088/1748-0221/18/01/C01071/pdf

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP Publishing  

Abstract

Real-time monitoring of clinical carbon beams from a synchrotron accelerator was accomplished by using aluminum-enriched phosphate glass with a silver activator. Build-up effects are often observed in commercially available silver-containing phosphate glass that strongly limit the use of the glass in real-time dosimetry in clinical particle therapy fields. In this study, we modified the composition of silver-containing phosphate glass by adding an additional 0.2 mol% aluminum impurity to cause broadband radioluminescence under clinical carbon beam exposure. Convenient real-time radiation monitoring was accomplished on submillimeter scales by using aluminum-enriched silver-containing phosphate glass beads. Optical fiber dosimetry using the aluminum-enriched silver-containing phosphate glass was demonstrated, and stable radioluminescence was visualized for each bunch of 290 MeV u⁻¹ from a synchrotron under different beam fluxes up to 3 × 10⁹ particles/spill (clinical beam conditions).

DOI： 10.35848/1347-4065/aca457

その他リンク： https://iopscience.iop.org/article/10.35848/1347-4065/aca457/pdf

担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP Publishing  

Abstract

A radiation-tolerant silicon carbide (SiC) based dosimeter was developed for the measurement of linear energy transfer (LET) distributions along the Bragg curve for pristine and spread-out Bragg peak (SOBP) clinical carbon beam. Since the conventional ionized chamber is not suitable and effective for LET measurement, several energy-dispersive dosimeters are being developed and tested in the clinical field. While most of the detector lacks radiation hardness against carbon beam, we have utilized wide-bandgap semiconductors of SiC with different epitaxial layers from 25, 69, and 170 μm as a dosimeter for the clinical carbon field at Gunma University Heavy Ion Medical Center (GHMC). LET spectra were obtained not only for pristine carbon beams with an energy of 290 MeV/n but also SOBP conditions. It was confirmed through the changes in LET distribution, primally carbons and fragments are identified, and those energy depositions are successfully obtained by the fabricated SiC dosimeter. The distribution of relative biological effectiveness (RBE) was estimated from LET through biological estimation models. Results suggested that SiC-based dosimeter is successful in being utilized in the detailed characterization of the clinical carbon therapy field.

DOI： 10.1088/1742-6596/2326/1/012015

Scopus

その他リンク： https://iopscience.iop.org/article/10.1088/1742-6596/2326/1/012015/pdf

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP Publishing  

Abstract

The possibility of real-time monitoring of clinical carbon beams was investigated by analyzing ion beam induced luminescence (IBIL) using phosphate glass (PG) with a dopant of europium (Eu). Phosphate glass with a silver activator (PG: Ag) is known as a substrate for personal dosimeters. Several trials are being made by utilizing PG: Ag as an in-situ diagnostic tool for the clinical radiation therapy field. However, silvers are not actively responding to the radiation during the irradiation because of their build-up effect. In this study, we introduced a co-activator of europium, which is expected to coexist with silvers and have a scintillator property for real-time response. IBIL was successfully visualized with each bunch of 290 MeV/n from synchrotron under different beam intensity from 6.0×10⁶ to 3.0×10⁹ (clinical beam condition) counts/spill. IBIL measurement at each position of Bragg peak suggested that developed PG:Ag-beads with Eu co-activators have successfully demonstrated real-time radiation monitoring of clinical carbon beams.

DOI： 10.1088/1742-6596/2326/1/012012

Scopus

その他リンク： https://iopscience.iop.org/article/10.1088/1742-6596/2326/1/012012/pdf

担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

The history of Compton cameras began with the detection of radiation sources originally for applications in astronomy. A Compton camera is a promising γ-ray detector that operates in the wide energy range of a few tens of keV to MeV. The γ-ray detection method of a Compton camera is based on Compton scattering kinematics, which is used to determine the direction and energy of the γ-rays without using a mechanical collimator. Although the Compton camera was originally designed for astrophysical applications, it was later applied in medical imaging as well. Moreover, its application in environmental radiation measurements is also under study. Although a few review papers regarding Compton cameras have been published, they either focus very specifically on the detectors used in such cameras or the particular applications of Compton cameras. Thus, the aim of this paper is to review the features and types of Compton cameras and introduce their applications, associated imaging algorithms, improvement scopes, and their future aspects.

DOI： 10.3390/s22197374

PubMed

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

In particle therapy, bioabsorbable polyglycolic acid (PGA) spacer was developed to reduce the healthy organ irradiation dose, especially in the gastrointestinal tract. The PGA spacer is safe and effective; however, there are no reports that have confirmed whether the PGA spacer which inserted in the body actually stops the carbon-ion (C-ion) beams. Here, we visualized and confirmed that the PGA spacer stops the C-ion beams in the body based on the dose distribution using auto-activation positron emission tomography (AAPET). A 59-year-old dedifferentiated retroperitoneal liposarcoma patient underwent C-ion radiotherapy (C-ion RT) on referral. A month before C-ion RT initiation, the patient underwent PGA spacer placement. Postoperatively, the patient received 4.4 Gy (RBE) per fraction of C-ion RT, followed by AAPET. AAPET revealed lower positron emitter concentrations at the distal tissue ventral to the PGA spacer than in the planning target volume. In observing the efficacy of the PGA spacer, the AAPET images and the average count per second of the positron emitter suggested that the PGA spacer stopped the C-ion beams in the body in accordance with the dose distribution. Therefore, AAPET was useful in confirming the PGA spacer’s effectiveness in this study, and the PGA spacer stopped the C-ion beams.

DOI： 10.3390/tomography8050195

記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：日本アイソトープ協会  

DOI： 10.3769/radioisotopes.71.109

CiNii Books

CiNii Research

担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.ijrobp.2022.03.002

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Image-guided adaptive brachytherapy (IGABT) using intracavitary and interstitial (IC/IS) techniques plays a pivotal role in definitive radiotherapy for locally advanced cervical cancers. However, the training opportunities for interstitial needle application are limited, preventing this technique from becoming widespread. This study aimed to develop a training simulator for IC/IS brachytherapy. The simulator consists of a soft silicone tumor phantom and acrylic tube mimicking the vagina; it has high visibility because of translucent materials and is compatible with computed tomography (CT) and magnetic resonance imaging (MRI). A patient harboring a typical bulky and irregular-shaped cervical tumor was selected from 495 in-house IGABT-treated candidates, and a tumor phantom (68 × 49 × 45 mm) modeled on this patient was produced from three-dimensional real-scale measurements of the MRI-based high-risk clinical target volume at first brachytherapy. In trial use by two physicians with different levels of IGABT skills, a Fletcher-Suit Asian Pacific applicator, and a Venezia applicator with interstitial needles were nicely applied to the simulator, facilitating successful creation of CT-based treatment plans consistent with clinical practice. Thus, the training simulator can be useful for the training of IC/IS brachytherapy, and warrants further research employing a greater number of phantoms and practitioners to verify its educational value.

DOI： 10.3390/jcm11113103

PubMed

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：EDP Sciences  

Radiological technologists in nuclear medicine departments (NMRTs) are exposed to higher radiation doses than other nuclear medicine staff. Consequently, the Australian Radiation Protection and Nuclear Safety Agency recommends using a 0.5-mm lead equivalence protective apron (PA) for staff with radiation exposure > 800 MBq of ^99mTc. However, 0.5 mm PA is heavy and cumbersome to use. We evaluated the effectiveness of a 0.25 mm lead equivalence lightweight protective apron (L-PA) for NMRT radiation exposure during daily nuclear medicine procedures. The work was performed both with a phantom and in a real situation in our study. The phantom study was conducted with five radioisotopes (RI) placed 0.5 m from the human phantom with and without L-PA. In the clinical study, NMRT recorded the radiation dose for 20 days inside and outside the L-PA using clinical agents (140 examinations). In the phantom study, L-PA decreased the measured doses by 63% with ²⁰¹Tl, 41% with ^99mTc, 27% with ⁶⁷Ga, 33% with ¹²³I, and 10% with ¹³¹I. In the clinical study, L-PA reduced the average dose per day by 43%. Therefore, L-PA could have sufficient shielding ability for daily work, mainly using ^99mTc, and could be recommended by considering PA weight.

DOI： 10.1051/radiopro/2022006

担当区分：筆頭著者,　最終著者,　責任著者   記述言語：日本語  

記述言語：日本語  

J-GLOBAL

開催年月日： 2024年11月

記述言語：日本語   会議種別：ポスター発表  

開催年月日： 2024年11月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2024年11月

記述言語：日本語   会議種別：口頭発表（一般）  

開催年月日： 2024年9月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2024年9月

記述言語：英語   会議種別：ポスター発表  

開催年月日： 2024年9月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2024年9月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2024年9月

記述言語：英語   会議種別：ポスター発表  

開催年月日： 2024年9月

記述言語：英語   会議種別：ポスター発表  

開催年月日： 2024年7月

記述言語：英語   会議種別：ポスター発表  

開催年月日： 2024年7月

記述言語：日本語   会議種別：ポスター発表  

開催年月日： 2024年4月

記述言語：英語  

開催年月日： 2024年4月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2024年4月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2024年4月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2024年3月

記述言語：日本語  

開催年月日： 2024年3月

記述言語：日本語  

開催年月日： 2023年12月

記述言語：英語   会議種別：ポスター発表  

開催年月日： 2023年12月

記述言語：日本語  

開催年月日： 2023年12月

記述言語：日本語   会議種別：ポスター発表  

開催年月日： 2023年11月 - 2023年12月

記述言語：日本語  

開催年月日： 2023年11月

記述言語：英語  

開催年月日： 2023年10月

記述言語：英語   会議種別：ポスター発表  

開催年月日： 2023年10月

記述言語：英語   会議種別：ポスター発表  

開催年月日： 2023年10月

記述言語：英語  

開催年月日： 2023年7月

記述言語：日本語  

開催年月日： 2023年6月

記述言語：日本語  

開催年月日： 2023年4月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2023年4月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2023年4月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2023年4月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2023年3月

記述言語：日本語   会議種別：ポスター発表  

開催年月日： 2022年11月 - 2022年12月

記述言語：英語   会議種別：公開講演，セミナー，チュートリアル，講習，講義等  

開催年月日： 2022年11月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2022年11月

記述言語：日本語   会議種別：口頭発表（一般）  

開催年月日： 2022年9月

記述言語：日本語   会議種別：口頭発表（一般）  

開催年月日： 2022年6月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2022年6月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2022年4月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2022年3月

記述言語：日本語   会議種別：口頭発表（一般）  

開催年月日： 2022年1月

記述言語：日本語   会議種別：ポスター発表  

記述言語：英語  

記述言語：英語  

記述言語：日本語  

記述言語：英語  

記述言語：日本語  

記述言語：英語  

記述言語：英語  

記述言語：英語  

記述言語：英語  

記述言語：英語  

記述言語：英語  

記述言語：英語  

記述言語：英語  

記述言語：日本語  

記述言語：英語  

記述言語：英語  

J-GLOBAL

J-GLOBAL

J-GLOBAL

記述言語：日本語   出版者・発行元：(公社)応用物理学会放射線分科会  

J-GLOBAL

J-GLOBAL

J-GLOBAL

記述言語：日本語   出版者・発行元：公益社団法人 日本アイソトープ協会  

DOI： 10.50955/happyokai.2.0_95

CiNii Research

J-GLOBAL