Fetal and ovarian radiation dose in patients undergoing gamma knife radiosurgery

Ioffe, Vladimir; Hudes, Richard; Shepard, David; Simard, J. Marc; Chin, Lawrence S.; Yu, C

doi:10.1016/s0090-3019(02)00742-5

Cited by 19 publications

(13 citation statements)

References 26 publications

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“…Studies on out-of-field doses from SRT have typically focused on either gamma knife (Ioffe et al 2002, Petti et al 2006, Hasanzadeh et al 2006 and/or CyberKnife (Petti et al 2006) delivery systems, but Linac-based treatments have also been considered (Maarouf et al 2005). Ioffe et al (2002) measured dose rates as a function of distance from the treatment isocenter from gamma knife treatments using the Rando phantom. The group took measurements for various collimator settings, and at different depths in the phantom.…”

Section: Stereotactic Radiation Therapy (Srt)-mentioning

confidence: 99%

A review of dosimetry studies on external-beam radiation treatment with respect to second cancer induction

2008

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It has been long known that patients treated with ionizing radiation carry a risk of developing a second cancer in their lifetimes. Factors contributing to the recently renewed concern about the second cancer include improved cancer survival rate, younger patient population as well as emerging treatment modalities such as intensity-modulated radiation treatment (IMRT) and proton therapy that can potentially elevate secondary exposures to healthy tissues distant from the target volume. In the past 30 years, external-beam treatment technologies have evolved significantly, and a large amount of data exist but appear to be difficult to comprehend and compare. This review article aims to provide readers with an understanding of the principles and methods related to scattered doses in radiation therapy by summarizing a large collection of dosimetry and clinical studies. Basic concepts and terminology are introduced at the beginning. That is followed by a comprehensive review of dosimetry studies for external-beam treatment modalities including classical radiation therapy, 3D-conformal x-ray therapy, intensity-modulated x-ray therapy (IMRT and tomotherapy) and proton therapy. Selected clinical data on second cancer induction among radiotherapy patients are also covered. Problems in past studies and controversial issues are discussed. The needs for future studies are presented at the end.

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Section: Stereotactic Radiation Therapy (Srt)-mentioning

confidence: 99%

A review of dosimetry studies on external-beam radiation treatment with respect to second cancer induction

2008

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“…We measured the entrance skin dose as the interventional reference point (i.e., the isocenter). We measured the fetal dose using a manufacturer-calibrated skin dose monitor (SDM 104-101 V4.0, McMahon Medical, San Diego, CA) at 13 cm from the isocenter; the fetus was assumed to lie at about the center of the phantom [ 5 ]. The 5 cm thick board was located 90 cm from the X-ray tube, and the source-image distance was 95 cm.…”

Section: Case Presentationmentioning

confidence: 99%

Estimating the Radiation Dose to the Fetus in Prophylactic Internal Iliac Artery Balloon Occlusion: Three Cases

Kai

Hamada

Yuge

et al. 2015

Case Reports in Obstetrics and Gynecology

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Background. Although radiation exposure is of great concern to expecting patients, little information is available on the fetal radiation dose associated with prophylactic internal iliac artery balloon occlusion (IIABO). Here we estimated the fetal radiation dose associated with prophylactic IIABO in Caesarean section (CS). Cases. We report our experience with the IIABO procedure in three consecutive patients with suspected placenta previa/accreta. Fetal radiation dose measurements were conducted prior to each CS by using an anthropomorphic phantom. Based on the simulated value, we calculated the fetal radiation dose as the absorbed dose. We found that the fetal radiation doses ranged from 12.88 to 31.6 mGy. The fetal radiation dose during the prophylactic IIABOs did not exceed 50 mGy. Conclusion. The IIABO procedure could result in a very small increase in the risk of harmful effects to the fetus.

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“…[44] quantified the dose rate as a function of distance from the isocenter in a RANDO phantom for Gamma-Knife treatments. Hasanzadeh et al .…”

Section: Measurement and Calculation Of Out-of-field Dosementioning

confidence: 99%

Consideration of the radiation dose delivered away from the treatment field to patients in radiotherapy

Taylor

Kron

2011

J Med Phys

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Radiation delivery to cancer patients for radiotherapy is invariably accompanied by unwanted radiation to other parts of the patient’s body. Traditionally, considerable effort has been made to calculate and measure the radiation dose to the target as well as to nearby critical structures. Only recently has attention been focused also on the relatively low doses that exist far from the primary radiation beams. In several clinical scenarios, such doses have been associated with cardiac toxicity as well as an increased risk of secondary cancer induction. Out-of-field dose is a result of leakage and scatter and generally difficult to predict accurately. The present review aims to present existing data, from measurements and calculations, and discuss its implications for radiotherapy.

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Fetal and ovarian radiation dose in patients undergoing gamma knife radiosurgery

Cited by 19 publications

References 26 publications

A review of dosimetry studies on external-beam radiation treatment with respect to second cancer induction

A review of dosimetry studies on external-beam radiation treatment with respect to second cancer induction

Estimating the Radiation Dose to the Fetus in Prophylactic Internal Iliac Artery Balloon Occlusion: Three Cases

Consideration of the radiation dose delivered away from the treatment field to patients in radiotherapy

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