An evaluation of dosimetric characteristics of MAGIC gel modified by adding formaldehyde (MAGIC-f)

Pavoni, Juliana Fernandes; Baffa, Oswaldo

doi:10.1016/j.radmeas.2012.10.004

Cited by 42 publications

(25 citation statements)

References 30 publications

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“…The MAGICf gel calibration curve shows a linear behavior as previously found in other works [5,14]. Figure 5 shows the treatment plan.…”

Section: Resultssupporting

confidence: 72%

“…Then the solution was cooled to C, and ascorbic acid, copper sulfate, and formaldehyde were added. After 5 minutes, the methacrylic acid was added and the solution was stirred for more than 5 minutes [5].…”

Section: Gel Manufacturingmentioning

confidence: 99%

“…Some institutions solve this problem by changing the orientation of the beam to minimize irradiation of the implants. Other institutions, due to its increased availability and accuracy, use Intensity-Modulated Radiation Therapy (IMRT) for this kind of treatment [5]. IMRT is an advanced radiotherapy technique able to deliver a high dose of radiation to the target volume, while preserving the surrounding tissues.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the complexity of the dose distribution (DD), appropriate quality assurance (QA) of these treatment is mandatory [6,7]. Currently available dosimeters, such as Ionization Cameras (IC), diodes arrays, thermoluminescent dosimeters (TLDs) and Radiographic Films provide dose distributions at one point or in two dimensions [5]. In a recent work, Electron Spin Resonance dosimetry with alanine, which has a flat response above energy of 100kV, was also used to measure dose in the prostate region [8].…”

Section: Introductionmentioning

confidence: 99%

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A phantom to study the effects of metallic prostheses in radiotherapy by gel dosimetry

Cuevas

Pavoni

Baffa

2016

AIP Conference Proceedings

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“…The MAGICf gel calibration curve shows a linear behavior as previously found in other works [5,14]. Figure 5 shows the treatment plan.…”

Section: Resultssupporting

confidence: 72%

Section: Gel Manufacturingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A phantom to study the effects of metallic prostheses in radiotherapy by gel dosimetry

Cuevas

Pavoni

Baffa

2016

AIP Conference Proceedings

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“…The dosimeter was prepared in a fume hood under normal levels of oxygen according to the work of Fernandes et al 2008 . The dosimeter was applied in the same way as described in papers …”

Section: Methodsmentioning

confidence: 99%

Evaluation of a composite Gel‐Alanine phantom on an end‐to‐end test to treat multiple brain metastases by a single isocenter VMAT technique

et al. 2017

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Gel and thermoluminescence dosimetry for dose verifications of a real anatomy simulated prostate conformal radiation treatment in the presence of metallic femoral prosthesis

Rojas

Pavoni

Arruda

et al. 2021

J Applied Clin Med Phys

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This study aims to verify the dose delivery of prostate radiotherapy treatments in an adult pelvic phantom with two metallic hip and femur prosthesis using a four‐field box technique. The prostate planned target volume (PTV) tridimensional (3D) dose distribution was evaluated using gel dosimetry, and thermoluminescent dosimeters (TLD) were used for point‐dose measurements outside it. Both results were compared to the treatment planning system (TPS) dose calculation without using heterogeneity corrections to evaluate the influence of the metal in the dose distribution. MAGIC‐f gel dosimeter (Methacrylic and Ascorbic acid in Gelatin Initiated by Copper with Formaldehyde) associated with magnetic resonance imaging was used. TLD were positioned at several points at the bone metal interface and the sacrum region. The comparison of the gel measured and the TPS calculated dose distributions were done using gamma analysis (3%/3 mm), and a pass rate of 93% was achieved. The TLD dose values at the bone‐metal interface showed variations from the planned dose. However, at the sacrum region, where the beams did not intercept the prosthesis, there was a good agreement between TPS planning and TLD measurements. Our results show how the combination of 3D dosimetry and measurements at specific points in the phantom allowed a comprehensive view of the dose distribution and identified that care must also be paid to regions outside the PTV.

show abstract

An evaluation of dosimetric characteristics of MAGIC gel modified by adding formaldehyde (MAGIC-f)

Cited by 42 publications

References 30 publications

A phantom to study the effects of metallic prostheses in radiotherapy by gel dosimetry

A phantom to study the effects of metallic prostheses in radiotherapy by gel dosimetry

Evaluation of a composite Gel‐Alanine phantom on an end‐to‐end test to treat multiple brain metastases by a single isocenter VMAT technique

Gel and thermoluminescence dosimetry for dose verifications of a real anatomy simulated prostate conformal radiation treatment in the presence of metallic femoral prosthesis

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