Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li3B7O12:Cu in therapeutic carbon beams

Rhenium-186 (Re-186) is a β-emitting radionuclide. Emitted β-particles have ranges up to 4.5 mm in tissue, capable of delivering high doses to skeletal regions of high Re-186 concentrations while sparing adjacent radiosensitive regions and thus making the irradiation well tolerated for the patient. Along with the β-emissions, γ-rays are emitted having an adequate energy for imaging during therapy and biodistribution assessment for patient-specific dosimetry calculations. The relatively short physical half-life combined with the β-emissions allows the delivery of relatively high activity rate for a short period of time in areas of concentration. This study is a short review concerning the palliative treatment of skeletal metastases using 186Re-HEDP. After presenting the dominant ways of 186Re production, special emphasis is given to dosimetry issues while the effect of palliation therapy can be evaluated through the comparison of the absorbed dose in metastatic lesion relatively to the normal bone region. Accurate dose estimation is required taking into account the anatomic individual difference of each patient. For this purpose a patient specific dosimetric model considering metastatic lesions as spherical nodules is introduced. In order to quantify in a representative way the results of palliation treatment, the concept of therapeutic ratios is analyzed.

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Absorbed dose estimation to family members of patients treated with radioiodine for thyroid cancer

Physica Medica ◽

10.1016/j.ejmp.2016.07.220 ◽

2016 ◽

Vol 32 ◽

pp. 325

Author(s):

K. Hatziioannou ◽

K. Badiavas ◽

E. Papanastasiou ◽

I. Seimenis ◽

G. Loukidis ◽

...

Keyword(s):

Thyroid Cancer ◽

Family Members ◽

Absorbed Dose ◽

Dose Estimation

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Absorbed-dose estimation and quality attributes of gamma-irradiated fresh shiitake mushrooms

Journal of the Science of Food and Agriculture ◽

10.1002/jsfa.5875 ◽

2012 ◽

Vol 93 (3) ◽

pp. 634-640 ◽

Cited By ~ 8

Author(s):

Kashif Akram ◽

Jae-Jun Ahn ◽

Ji-Yeong Baek ◽

Sung-Ran Yoon ◽

Joong-Ho Kwon

Keyword(s):

Absorbed Dose ◽

Quality Attributes ◽

Dose Estimation ◽

Shiitake Mushrooms ◽

Gamma Irradiated

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Thermoluminescence Properties of Optical Fibers Doped with RE+3 (RE=Sm, Nd) Ions Subjected to X-Ray Irradiation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.606.19 ◽

2014 ◽

Vol 606 ◽

pp. 19-23

Author(s):

Azadeh Refaei ◽

Husin Wagiran ◽

M.A. Saeed

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Glow Curve ◽

Absorbed Dose ◽

Rare Earth Doping ◽

X Ray ◽

Response Versus ◽

Dose Ranging ◽

Higher Temperature ◽

Doping Type

This paper describes the thermoluminescence properties of RE+3(RE=Nd, Sm) doped optical fiber SiO2 prepared by CorActive company in Canada. The samples were exposed to 6 MV X-ray irradiation at dose ranging from 0.5 to 4 Gy at hospital Sultan Ismail, Johor Bahru, Malaysia using the LINAC accelerator. After exposure and a certain delay of 12 h to get uniform control of thermal fading, the optical fiber TL yield was readout using a TL reader. The optical fiber demonstrated a linear TL response versus of the absorbed dose. The linearity increases with the increasing dose while in the case of Sm-doped optical fiber; the response is comparatively smaller than Nd-doped optical fiber. Also, the glow curve of RE+3 ions doped optical fiber is compared with the undoped fibers. The results exhibit that the glow curve peaks are shifted to higher temperature due to rare-earth doping. As the results indicate the TL response strongly depends on the doping type of materials. All these TL characteristics are proposing this commercial optical fiber very decisive TL material.

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Internal absorbed dose estimation by a TLD method for -FDG and comparison with the dose estimates from whole body PET

Physics in Medicine and Biology ◽

10.1088/0031-9155/44/2/021 ◽

1999 ◽

Vol 44 (2) ◽

pp. 595-606 ◽

Cited By ~ 12

Author(s):

Hossain M Deloar ◽

Takehiko Fujiwara ◽

Miho Shidahara ◽

Takashi Nakamura ◽

Akira Yamadera ◽

...

Keyword(s):

Absorbed Dose ◽

Whole Body ◽

Dose Estimation

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Fading time and irradiation dose estimation from thermoluminescent dosemeters using glow curve deconvolution

Radiation Measurements ◽

10.1016/j.radmeas.2017.11.002 ◽

2018 ◽

Vol 108 ◽

pp. 20-25 ◽

Cited By ~ 4

Author(s):

R. Theinert ◽

K. Kröninger ◽

A. Lütfring ◽

S. Mender ◽

F. Mentzel ◽

...

Keyword(s):

Glow Curve ◽

Irradiation Dose ◽

Dose Estimation ◽

Fading Time ◽

Thermoluminescent Dosemeters

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Investigation of tube parameters on Xray spectra by MCNP5 code

Science and Technology Development Journal ◽

10.32508/stdj.v16i4.1592 ◽

2013 ◽

Vol 16 (4) ◽

pp. 20-25

Author(s):

Khanh Ai Tran ◽

Dung Thi Thuy Vo ◽

Loan Thi Hong Mai ◽

Nhon Van Mai ◽

Phuong Nguyen Dang

Keyword(s):

Quality Improvement ◽

Absorbed Dose ◽

Emission Spectra ◽

Bremsstrahlung Spectrum ◽

Dose Estimation ◽

X Ray ◽

Image Quality Improvement ◽

Mcnp5 Code ◽

Simulation Results

In diagnostic radiology, the determination of bremsstrahlung spectrum is essential for patient absorbed dose estimation and image quality improvement. In this paper, we surveyed the X-ray emission spectra of different peak voltages 50, 70, 85, 125 and 150 kV by using MCNP5 code. Besides, the effects of filter, collimator and anode material on X-ray spectra have also been investigated. The simulation results fairly agree with experimental spectra obtained by P.T. Talla et al. (2009)

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MEASUREMENT OF YTTRIUM-90 BIODISTRIBUTION IN SELECTIVE INTERNAL RADIATION THERAPY (SIRT)

Indonesian Journal of Physics and Nuclear Applications ◽

10.24246/ijpna.v4i2.45-57 ◽

2019 ◽

Vol 4 (2) ◽

pp. 45-57

Author(s):

Sita Gandes Pinasti

Keyword(s):

Single Photon ◽

Imaging Modality ◽

Photon Emission ◽

Absorbed Dose ◽

Emission Tomography ◽

Response Analysis ◽

Dose Estimation ◽

Positron Emission ◽

Healthy Liver

Measurement of radionuclides biodistribution in post-radioembolization 90Y SIRT is a part of treatment evaluation, in which the assessment of biodistribution is used to evaluate the possible extrahepatic presence and the absorbed dose estimation for the tumor cells, healthy liver cells, and critical organs. As the dose-response analysis is performed based on this evaluation, the biodistribution measurement coming from post-imaging modality has a crucial role in achieving these goals. The two devices, Single Photon Emission Tomography (SPECT) and Positron Emission Tomography are discussed in some aspects, including the quality of quantitative images, performance characteristics, and absorbed dose considerations.

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