The Effect of N, Nʹ-Methylene-bis-acrylamide Removal from a Polymer Gel Dosimeter Formulation: Spin–Spin Relaxation Rate Investigation and Post-irradiation Time Instability

2021 ◽  
Author(s):  
Fatemeh Habibi ◽  
Seyed Mohammad Mahdi Abtahi
Keyword(s):  
Relaxation Rate ◽  
Spin Relaxation ◽  
Irradiation Time ◽  
Polymer Gel ◽  
Gel Dosimeter ◽  
Post Irradiation ◽  
Spin Relaxation Rate ◽  
Polymer Gel Dosimeter

scholarly journals Accuracy and Precision of Magat Gel As a Dosimeter

2015 ◽  
Vol 12 (1) ◽  
pp. 01-07 ◽  
Author(s):  
Nik Razak ◽  
Azhar Rahman ◽  
Sivamany Kandaiya ◽  
Iskandar Mustafa ◽  
Nor Yahaya ◽  
...  
Keyword(s):  
Dose Response ◽  
Dose Range ◽  
Temporal Stability ◽  
Absorbed Dose ◽  
Polymer Gel ◽  
Gel Dosimeter ◽  
Post Irradiation ◽  
Polymer Gel Dosimeter ◽  
Dose Sensitivity ◽  
Accuracy And Precision

Polymer gel dosimeter is a radiation sensitive chemical dosimeter that can measure 3 D dose distribution with high resolution. Due to the increasing complexity of radiotherapy treatment planning and delivery, accurate experimental radiation dosimetry plays an important role in the implementation and quality assurance of new treatment techniques. A polymer gel dosimeter must possess several important characteristics of a dosimeter to be able to measure absorbed dose precisely. two important dosimetric properties of a dosimeter were determined in this study; accuracy and precision. The MAGAT gels were made of 5% gelatin, 6% methacrylic acid and 10 mM tetrakis-hydroxy-methyl-phosphonium chloride (THPC). The irradiation of MAGAT gel was performed by 6-MV photon beam at a dose range 1 to 10 Gy and was imaged by 1.5 T Magnetic Resonance Imaging (MRI). The dose response of MAGAT gel dosimeter was obtained from spin-spin relaxation rate (R2) of MRI signal. The accuracy of MAGAT gel dosimeter has a range within 4% for doses greater than and equal to 3 Gy. The reproducibility of the MAGAT gel dosimeter at one irradiation was less than 1% whilst the long term reproducibility was within 3% over the five month period. For temporal stability, the dose sensitivity of MAGAT gel dosimeter irradiate at 1 to 11 days post-manufacturing decreased over time. While the dose sensitivity imaged at 1 to 9 days post-irradiation increased up to 4 days post-irradiation and subsequently starts decreasing after 4 days till 9 days. From the study of two dosimetric properties, MAGAT gel dosimeter shows a great dose response with a superior dose response. Thus the MAGAT gel dosimeter can be apply as a 3 D radiotherapy dosimeter.

The impact of various amounts of fabricating components on the response of PASSAG polymer gel dosimeter: An optimization study

2022 ◽  
Vol 190 ◽  
pp. 109804
Author(s):  
Akbar Aliasgharzadeh ◽  
Vahid Anaraki ◽  
Daryoush Khoramian ◽  
Mahdi Ghorbani ◽  
Bagher Farhood
Keyword(s):  
Polymer Gel ◽  
Gel Dosimeter ◽  
Polymer Gel Dosimeter ◽  
Optimization Study ◽  
The Impact

Magnetic resonance imaging of radiation dose distributions using a polymer-gel dosimeter

1994 ◽  
Vol 39 (9) ◽  
pp. 1437-1455 ◽  
Author(s):  
M J Maryanski ◽  
R J Schulz ◽  
G S Ibbott ◽  
J C Gatenby ◽  
J Xie ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Radiation Dose ◽  
Polymer Gel ◽  
Resonance Imaging ◽  
Dose Distributions ◽  
Gel Dosimeter ◽  
Polymer Gel Dosimeter

scholarly journals Polymer gel dosimeter based on itaconic acid

2015 ◽  
Vol 105 ◽  
pp. 98-104 ◽  
Author(s):  
Facundo Mattea ◽  
David Chacón ◽  
José Vedelago ◽  
Mauro Valente ◽  
Miriam C. Strumia
Keyword(s):  
Itaconic Acid ◽  
Polymer Gel ◽  
Gel Dosimeter ◽  
Polymer Gel Dosimeter
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