scholarly journals Internal Radiation Dose Assessment using IRDA Software for Bangladeshi Subjects due to Ingestion of CO-60

2013 ◽  
Vol 4 (1) ◽  
pp. 135-143
Author(s):  
AHMR Quddus ◽  
M Moksed Ali ◽  
MMA Zaman ◽  
AS Mollah
Keyword(s):  
Radiation Dose ◽  
Age Groups ◽  
Absorbed Dose ◽  
Equivalent Dose ◽  
Dose Assessment ◽  
Gi Tract ◽  
Internal Radiation ◽  
Radiation Dose Assessment ◽  
Tissue Compartments ◽  
Committed Effective Dose

Retention, absorbed dose, committed equivalent dose and committed effective doses have been assessed due to acute ingestion of 1 Bq of 60Co in human body. Calculations are done using “Internal Radiation Dose Assessment (IRDA)” software which has been developed based on the biokinetic model. Due to ingestion maximum radiation dose is deposited in the gastro intestinal (GI) tract, assumed to consist of four tissue compartments, e.g. stomach (ST), small intestine (SI), upper large intestine (ULI) and lower large intestine (LLI). In this work actual tissue masses of GI Tract of Bangladeshi people have been considered to calculate the above mentioned quantities for different age groups, such as 1 yr, 10 yrs and adult (female and male). One hour after the ingestion, the retention and absorbed dose show the trend ST > SI > ULI > LLI. Regarding tissue compartments the variation of the committed equivalent dose pattern is LLI > ULI > ST > SI for the radionuclide. The variation of absorbed dose, committed equivalent dose and committed effective dose with respect to age follow the pattern: 1 yr > 10yrs > adult female > adult male. The highest committed effective dose for ingestion of 1 Bq of the radionuclide under the study is found in the GI tract of 1 yr old child. This value is 6.56 x 10-6 mSv. For other age groups these values are slightly less. DOI: http://dx.doi.org/10.3329/bjmp.v4i1.14703 Bangladesh Journal of Medical Physics Vol.4 No.1 2011 135-143

scholarly journals Assessment of Internal Radiation Dose in Gastro Intestinal Tract for Acute Ingestion of Ra-226 of the People of Bangladesh

2018 ◽  
Vol 19 (1) ◽  
pp. 38-42
Author(s):  
AHMR Quddus ◽  
MMA Zaman ◽  
AS Mollah ◽  
MM Zaman
Keyword(s):  
Radiation Dose ◽  
Effective Dose ◽  
Age Groups ◽  
Absorbed Dose ◽  
Equivalent Dose ◽  
Gi Tract ◽  
Internal Radiation ◽  
Acute Ingestion ◽  
Tissue Compartments ◽  
Committed Effective Dose

To design appropriate method for treatment planning it is necessary to know the precise radiation dose absorbed by any internal organ in human body. This paper will provide a method for calculating retention, absorbed dose, committed equivalent dose and committed effective doses due to acute ingestion of 1 Bq of Ra-226 in the gastro intestinal (GI) tract of Bangladeshi people for different age groups. Calculations are done by using “Internal Radiation Dose Assessment (IRDA)” software which has been developed in Visual Basic language. GI tract consists of four tissue compartments, e.g. stomach (ST), small intestine (SI), upper large intestine (ULI) and lower large intestine (LLI). One hour after the ingestion, the retention and absorbed dose show the trend ST > SI > ULI > LLI. For tissue compartments the variation of the committed equivalent dose pattern is LLI > ULI > ST > SI for the radionuclide. The variation of absorbed dose, committed equivalent dose and committed effective dose with respect to age follow the pattern: 1 year> 10years > adult female > adult male. The highest committed effective dose is found in the GI tract of 1 year old child. For other age groups these values are slightly less than those for 1 year old child.Bangladesh J. Nuclear Med. 19(1): 38-42, January 2016

scholarly journals Internal radiation dose assessment of radiopharmaceuticals prepared with cyclotron-produced99mTc

2019 ◽  
Vol 46 (3) ◽  
pp. 1437-1446 ◽  
Author(s):  
Laura Meléndez-Alafort ◽  
Guillermina Ferro-Flores ◽  
Laura De Nardo ◽  
Michele Bello ◽  
Marta Paiusco ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Dose Assessment ◽  
Internal Radiation ◽  
Radiation Dose Assessment

scholarly journals Uncertainty of fast biological radiation dose assessment for emergency response scenarios

2016 ◽  
Vol 93 (1) ◽  
pp. 127-135 ◽  
Author(s):  
Elizabeth A. Ainsbury ◽  
Manuel Higueras ◽  
Pedro Puig ◽  
Jochen Einbeck ◽  
Daniel Samaga ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Emergency Response ◽  
Dose Assessment ◽  
Radiation Dose Assessment

Conceptus radiation dose assessment from fluoroscopically assisted surgical treatment of hip fractures

2003 ◽  
Vol 30 (10) ◽  
pp. 2594-2601 ◽  
Author(s):  
J. Damilakis ◽  
N. Theocharopoulos ◽  
K. Perisinakis ◽  
G. Papadokostakis ◽  
A. Hadjipavlou ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Radiation Dose ◽  
Hip Fractures ◽  
Dose Assessment ◽  
Radiation Dose Assessment

scholarly journals A comparison of in-air and in-water calibration of a dosimetry system used for radiation dose assessment in cancer therapy

2010 ◽  
Vol 25 (1) ◽  
pp. 51-54 ◽  
Author(s):  
Waheed Arshed ◽  
Khalid Mahmood ◽  
Ikramullah Qazi ◽  
Asad Ullah ◽  
Perveen Akhter ◽  
...  
Keyword(s):  
Radiation Dosimetry ◽  
Absorbed Dose ◽  
Dose Assessment ◽  
Dose Delivery ◽  
Air Kerma ◽  
Tissue Equivalent ◽  
Dosimetry System ◽  
Irradiation Geometry ◽  
Radiation Dose Assessment ◽  
Absorbed Dose To Water

An accurate calibration of the therapy level radiation dosimetry system has a pivotal role in the accuracy of dose delivery to cancer patients. The two methods used for obtaining a tissue equivalent calibration of the system: air kerma calibration and its conversion to a tissue equivalent value (absorbed dose to water) and direct calibration of the system in a water phantom, have been compared for identical irradiation geometry. It was found that the deviation between the two methods remained within a range of 0% to ?1.7% for the PTW UNIDOS dosimetry system. This means that although the recommended method is in-water calibration, under exceptional circumstances, in-air calibration may be used as well.

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