Medical articles

Reduced PTV margins for prostate IMRT with daily online IGRT: a retrospective analysis

The addition of daily online IGRT for prostate IMRT patients enhances treatment accuracy and presents the possibility of a reduction in PTV margins.

A reduction in the PTV margin would lead to reduced bladder and rectal doses and, in turn, may allow for dose escalation.

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DIBH for left-sided breast radiotherapy: Does this equate to a reduction in OAR doses?

In response to evidence that cardiac doses received by patients undergoing left sided breast radiotherapy leads to an increased risk of long-term radiation induced cardio-vascular side-effects, this study seeks to determine whether it is possible to reduce cardiac dose by implementing deep inspiration breath-hold (DIBH) with forward planned IMRT.

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Dosimetric comparison of conventional wedge fields vs IMRT

The Royal College of Radiologists recently stated[1, 2] there is evidence in breast cancer that forward-planned tangential IMRT can be used to reduce the toxicity seen in conventional wedged breast radiotherapy. They referenced the clinical trial carried out by the Royal Marsden Hospital[3], published in 2007, which found a significant association of late adverse effects with the presence of regions receiving doses ≥ 105% of the prescribed dose.

Authors: H. Kerr, J. Pettingell, K. Walsh, M. Robb, P. Peters, N. McAndrew, B. Mzenda, A. Eve, S. Razaq, A. Penny

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How much lung is in the field?

A comparison of lung depth measured in the DRRs of breast tangential fields with the corresponding volume of lung receiving high doses in the DVHs of CT planned Ca Breast patients.

Authors: K. Walsh, J. Pettingell, H. Kerr, A. Eve, B. Mzenda, P. Peters, N. McAndrew, M. Robb, S. Razaq, A. Penny

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Comparison of doses to OARs

A comparison of doses to OARs in inverse planned IMRT and 3D conformal prostate treatments.

Authors: B. Mzenda, P. Peters, J. Pettingell, H. Kerr, K. Walsh, A. Eve, N. McAndrew, M. Robb, S. Razaq, A. Penny

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