Dosimetric Evaluation and Verification of External Beam 3-D Treatment Plans in Humanoid Phantom Using Thermoluminescent Dosimeters (TLDs)

Siddique, Rizwana; Uddin, Zaheer; Hussain, Munawar

doi:10.6000/1927-5129.2012.08.02.65

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…Once in several years, to confirm these curves, SSDLs uses other techniques, such as dosimeters, MOSFETs, alanine dosimeters, film and dosimetry gels, and also in some cases, depending on the inherent characteristics of the type of detection, the type of measurement, and its availability, the type of detector is selected. [5][6][7][8][9][10][11][12][13][14][15] The curves that are used in radiotherapy to calculate the patient's absorbed dose should be approved by SSDLs. In this article, these curves are called the Hospital Dosimetry Standard (HDS).…”

Section: Introductionmentioning

confidence: 99%

Using TLD in determining the absorbed dose in the area outside the irradiation region after mastectomy

Ali¹

2023

GHOA

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Introduction: The most common cancer in women worldwide is breast cancer and radiotherapy is the best treatment choice after mastectomy.1,2 In the radiation therapy after mastectomy, depending on the type of tumor, the area of the breast removed goes under radiotherapy. Methods: TLD (Thermoluminescence Dosimetry) chips were used in this project. Typically, each patient under an irradiation of 200 cGy during 25 sessions received a total of 5000 cGy. Radiation therapies were performed in such a way that the patient was subjected to 10 MV photovoltaic radiations in a 10×10 Cm2 area in the mastectomy region. Meanwhile, according to the depth of the tumor inside the chest, the radiation of gamma rays of cobalt 60 was used in surrounding regions. The absorption dose coefficients were the same in the TLD obtained from the photovoltaic radiation 10MV and the gamma beam of cobalt 60. Results: Then the absorbed dose as calculated by hospital dosimeters standard was compared with the absorbed dose measured by TLD. The areas determined as zero absorption doses by Hospital dosimeters standard were calculated as non-zero absorbed dose by TLD. There were also areas where the doses calculated by TLD were different from the hospital dosimeters standard. Conclusion: To reduce the possibility of side effects of additional radiation, it is suggested that in the final absorption, which is determined for the patient during radiotherapy, doses be calculated for the area outside the treated area, too.

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Section: Introductionmentioning

confidence: 99%

Using TLD in determining the absorbed dose in the area outside the irradiation region after mastectomy

Ali¹

2023

GHOA

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Comparison of dosimeter response of TLD-100 and ionization chamber for high energy photon beams at KIRAN Karachi in Pakistan

Waqar

Ul-Haq

Bilal

et al. 2017

The Egyptian Journal of Radiology and Nuclear Medicine

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Radiation exposure to patients undergoing percutaneous transhepatic cholangiography and endoscopic retrograde cholangiography: an advanced phantom study

Tunçman,

Özgür,

Nayci

et al. 2024

Radiation Protection Dosimetry

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Fluoroscopic examinations like Endoscopic Retrograde Cholangiopancreatography (ERCP) and Percutaneous Transhepatic Cholangiography (PTC) are fundamental in diagnosing and treating hepatobiliary diseases. However, these procedures expose patients to significant radiation, highlighting the need for a detailed assessment of the radiation doses received by critical organs. The study’s primary objective is to determine the experimental doses received by critical organs in patients undergoing these procedures. This study utilized an Alderson RANDO phantom outfitted with Thermoluminescent Dosemeters (TLDs) to experimentally measure the radiation doses received by various organs during ERCP and PTC procedures. This method provided direct and accurate data on organ-specific radiation exposure, contrasting with the traditional approach of relying on theoretical simulations. The analysis revealed that PTC generally results in higher radiation doses to organs compared to ERCP. Critical organs, such as the thyroid, spleen, liver, pancreas, ovaries, and uterus, were exposed to varying levels of radiation, with the thyroid and spleen receiving particularly high doses in PTC. The study also demonstrated that the per-minute radiation exposure was consistently higher in PTC across all examined organs. The study’s findings underscore the significant radiation exposure associated with ERCP and PTC, with PTC posing a greater risk. Understanding these exposure levels is crucial for clinical decision-making, particularly when considering patients’ pre-existing conditions and sensitivity to radiation. The study highlights the need for clinicians to carefully weigh the benefits of ERCP and PTC against the potential radiological risks. It suggests a preference for ERCP in situations where radiation exposure needs to be minimized. Furthermore, the findings advocate for ongoing advancements in medical imaging techniques to reduce radiation exposure, emphasizing the importance of patient safety in fluoroscopic examinations. This research contributes significantly to informed clinical decision-making, ensuring that the selection of diagnostic and therapeutic procedures aligns with the best interest of patient health and safety.

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Dosimetric Evaluation and Verification of External Beam 3-D Treatment Plans in Humanoid Phantom Using Thermoluminescent Dosimeters (TLDs)

Cited by 3 publications

References 11 publications

Using TLD in determining the absorbed dose in the area outside the irradiation region after mastectomy

Using TLD in determining the absorbed dose in the area outside the irradiation region after mastectomy

Comparison of dosimeter response of TLD-100 and ionization chamber for high energy photon beams at KIRAN Karachi in Pakistan

Radiation exposure to patients undergoing percutaneous transhepatic cholangiography and endoscopic retrograde cholangiography: an advanced phantom study

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