677 Poster In-vivo dosimetry in electron beam radiotherapy with silicon diodes; the impact of the build-up cap thickness

2002 ◽  
Vol 64 ◽  
pp. S205-S206
Keyword(s):  
Electron Beam ◽  
In Vivo Dosimetry ◽  
Electron Beam Radiotherapy ◽  
The Impact

SU-GG-T-310: Dose Perturbation Caused by MOSFET Dosimeter during in Vivo Dosimetry of Photon and Electron Beam Radiotherapy - a Film Dosimetry Study

2010 ◽  
Vol 37 (6Part20) ◽  
pp. 3257-3257
Author(s):  
D Manigandan ◽  
S Ganesan ◽  
P Aruna ◽  
G Bharandharani ◽  
V Subramani ◽  
...  
Keyword(s):  
Electron Beam ◽  
In Vivo Dosimetry ◽  
Film Dosimetry ◽  
Dose Perturbation ◽  
Electron Beam Radiotherapy

The Use of Incremental Technology to Produce 3D-Truss Ti6Al4V Implants which Improves the Spinal Treatment Effectiveness

2016 ◽  
Vol 687 ◽  
pp. 179-184
Author(s):  
Lechoslaw Ciupik ◽  
Agnieszka Kierzkowska ◽  
Jacek Cecek ◽  
Jerzy Pieniazek ◽  
Jacek Sterna ◽  
...  
Keyword(s):  
Electron Beam ◽  
Spatial Structure ◽  
Material Removal ◽  
Treatment Effectiveness ◽  
Manufacturing Technology ◽  
Truss Structures ◽  
Bone Surgery ◽  
The Impact

In the study the impact of manufacturing technology of alloy Ti6Al4V implants on the effectiveness of "fusion, treatment on the defined tissue biocompatibility and on the osseointegration with the bone” was analyzed. Models and samples made by material removal processing and electron beam technology EBT were tested in vitro biological and in vivo animals tests with histopathological assessment of tissues. The results confirmed the biocompatibility of the Ti6Al4V 3D-T alloy, and thus safety in bone surgery. On the basis of CTt examinations of preparates taken from animals after 3÷4M implantation it has been shown a very good osseointegration of truss structures with the bone. The introduction of EBT technology extends the capabilities of designing of a safe implant which is matched to the anatomy, exhibits complex spatial structure and surfaces that are conducive to the propagation of union/overgrowth of bone in accordance with the proposed hypothesis: Ivy-like mechanism.

Is Electron Beam Intraoperative Radiotherapy (ELIOT) Safe in Pregnant Women with Early Breast Cancer? In Vivo Dosimetry to Assess Fetal Dose

2009 ◽  
Vol 16 (1) ◽  
Author(s):  
Viviana Galimberti ◽  
Mario Ciocca ◽  
Maria Cristina Leonardi ◽  
Vanna Zanagnolo ◽  
Baratella Paola ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Electron Beam ◽  
Pregnant Women ◽  
Early Breast Cancer ◽  
Intraoperative Radiotherapy ◽  
In Vivo Dosimetry ◽  
Fetal Dose

scholarly journals Total skin electron beam therapy rationalization and utility of in vivo dosimetry in a high-volume centre

BJR|Open ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 20190008
Author(s):  
Sarah Misson-Yates ◽  
Marium Naeem ◽  
Isabel Palmer ◽  
Eleanor Holden ◽  
Owen Hedley ◽  
...  
Keyword(s):  
Electron Beam ◽  
Standard Deviation ◽  
High Volume ◽  
In Vivo Dosimetry ◽  
Thermoluminescent Dosimeter ◽  
Electron Beam Therapy ◽  
Point Reduction ◽  
Dosimetric Accuracy ◽  
Significant Change

Objective: This paper reports on the rationalization of a substantial pool of in vivo dosimetry (IVD) data from patients treated with total skin electron beam therapy (TSEBT) and the application of this to verify the accurate delivery of TSEBT when changing linac manufacturer. Methods: Thermoluminescent dosimeter IVD data from 149 patients were analyzed comparing the population mean and standard deviation for each site. The number of sites required to confirm the prescribed dose were reviewed considering both dosimetric and clinical relevance. The reduced sites were then used to assess the continued dosimetric accuracy on new equipment and the results were compared statistically using the Mann–Witney test. Results: The trunk dose measurement points were reduced from nine to six and five extra trunk sites were identified and reviewed clinically prior to removal. Following change in manufacturer the trunk dose points showed no statistically significant change and confirmed that patients had received within 1.3% of the intended mean trunk dose using both delivery methods. A statistically significant change in 4 out of the 13 extra trunk sites was seen following the move to the new centre. However, all but one site showed a change of less than 1 standard deviation. Conclusion: The total number of measurement points per patient were reduced from 27 to 19 which constituted a 25% saving in preparation and read out. Accurate delivery of prescribed dose was confirmed following measurement point reduction for treatments delivered on linacs from two different manufacturers. Advances in knowledge: Proven methodology for rationalization of IVD measurements for TSEBT

Real-time in vivo dosimetry using micro-MOSFET detectors during intraoperative electron beam radiation therapy in early-stage breast cancer

2006 ◽  
Vol 78 (2) ◽  
pp. 213-216 ◽  
Author(s):  
Mario Ciocca ◽  
Valeria Piazzi ◽  
Roberta Lazzari ◽  
Andrea Vavassori ◽  
Alberto Luini ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Radiation Therapy ◽  
Electron Beam ◽  
Real Time ◽  
Early Stage ◽  
Early Stage Breast Cancer ◽  
In Vivo Dosimetry ◽  
Beam Radiation ◽  
Electron Beam Radiation

In vivo dosimetry using radiochromic films during intraoperative electron beam radiation therapy in early-stage breast cancer

2003 ◽  
Vol 69 (3) ◽  
pp. 285-289 ◽  
Author(s):  
Mario Ciocca ◽  
Roberto Orecchia ◽  
Cristina Garibaldi ◽  
Elena Rondi ◽  
Alberto Luini ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Radiation Therapy ◽  
Electron Beam ◽  
Early Stage ◽  
Early Stage Breast Cancer ◽  
In Vivo Dosimetry ◽  
Beam Radiation ◽  
Radiochromic Films ◽  
Electron Beam Radiation

scholarly journals Electron Beam Intraoperative Radiotherapy (ELIOT) in Pregnant Women with Breast Cancer: From in Vivo Dosimetry to Clinical Practice

Breast Care ◽  
2017 ◽  
Vol 12 (6) ◽  
pp. 396-400 ◽  
Author(s):  
Maria Leonardi ◽  
Agnese Cecconi ◽  
Rosa Luraschi ◽  
Elena Rondi ◽  
Federica Cattani ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Electron Beam ◽  
Pregnant Women ◽  
Intraoperative Radiotherapy ◽  
Pregnant Patient ◽  
Breast Conserving Surgery ◽  
In Vivo Dosimetry ◽  
Breast Cancer Patients ◽  
Tumor Bed

Background: The aim of this study was to confirm our preliminary results with in vivo dosimetry in non-pregnant breast cancer patients receiving electron beam intraoperative radiotherapy (ELIOT) and to report on the first treatment in a pregnant woman. Patients and Methods: Following our previous experience, 5 non-pregnant patients receiving ELIOT to the tumor bed after breast-conserving surgery (BCS) were studied with thermoluminescent dosimeters positioned in the subdiaphragmatic region, within the uterus, and in the ovarian region. In December 2011, the first pregnant breast cancer patient underwent BCS and ELIOT (21 Gy at 90% isodose) during the 15th week of gestation. Results: The mean dose to the subdiaphragmatic external region in the 5 non-pregnant patients was 5.57 mGy, while pelvic measurements were below 1 mGy. The actual dosimetry of the pregnant patient showed a mean subdiaphragmatic dose of 4.34 mGy, a mean suprapubic dose of 1.64 mGy, and mean ovarian doses of 1.48 mGy (right-sided) and 1.44 mGy (left-sided). The expected dose to the fetus was estimated as 0.84 mGy (0.004% of the prescribed dose). Conclusion: ELIOT as an anticipated boost to the breast could be considered in pregnant women in the early second trimester, postponing whole-breast irradiation after delivery.

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