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Radiotherapy Questions and Answers
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03/24/19 22:43
Prof.Seegenschmiedt 
03/24/19 22:43
Prof.Seegenschmiedt 

Radiotherapy Questions and Answers

Radiation therapy is usually applied on orthovoltage machines (with 100 - 120 kV X-rays) or linear accelerators (with 4 - 6 MeV electrons). On both radiation machines the intention is to provide sufficient dose to the palmar side of the hand and avoid dose to the dorsal side of the hand.

With this in mind a recent publication from Ruby Meridith et al. regarding dose optimization is important. They show that the application of sufficient bolus material (5 - 10mm) is important to place on the treatment area to adapt the dose depth profile. The enclosed figure demonstrate the dose distribution within the hand in a cross section view:

Figure 1: Dupuytren_RT_3D-Planning

The different depth dose profiles of electrons (6 MeV and 18 MeV) and photons (6 MV) are demonstrated in the other figure.

Figure 2: Radiation-Dose-Depth-Profile of Electrons-and-Photons

The link to the publication is: http://nobleresearch.org/Content/PDF/5/2...8511.2017-1.pdf
Meredith R et al., J Clin Radiat Oncol. 2017, 2(1):1-3 / http://dx.doi.org/10.14312/2397-8511.2017-1
Title of Publication: Dosimetric comparison of radiation methods for palmar fibrosis

Attachment
Dupuytren_RT_3D-Planning.jpg Dupuytren_RT_3D-Planning.jpg (17x)

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Radiation-Dose-Depth-Profile of Electrons-and-Photons.jpg Radiation-Dose-Depth-Profile of Electrons-and-Photons.jpg (19x)

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03/26/19 11:04
wach 

Administrator

03/26/19 11:04
wach 

Administrator

Radiotherapy More Questions and Answers

Further answers by Prof. Seegenschmiedt to questions from patients regarding radiotherapy can be found at

Definition of Dupuytren's Disease progression https://www.dupuytren-online.info/Forum_...51176265.html#3

Clinical examination of Dupuytren's prior to RT https://www.dupuytren-online.info/Forum_...1551611955.html

Appropriate size of field https://www.dupuytren-online.info/Forum_...50943427.html#2

Typical reactions after RT https://www.dupuytren-online.info/Forum_...52841879.html#6

Aftercare following RT https://www.dupuytren-online.info/Forum_...1551517552.html

Treatment of DD after RT (re-radiation) https://www.dupuytren-online.info/Forum_...48247359.html#6

RT after surgery https://www.dupuytren-online.info/Forum_...41924404.html#7

MSK imaging by radiologist: https://www.dupuytren-online.info/Forum_...56416538.html#3

Acute Trauma and Induction of Dupuytren Disease: https://www.dupuytren-online.info/Forum_...55095603.html#1

Data set for first assessment of Ledderhose disease: https://www.dupuytren-online.info/Forum_...1555074640.html

Data form for first assessment of Dupuytren disease: https://www.dupuytren-online.info/Forum_...1555069849.html

Fibrosis and Fibromatosis: https://www.dupuytren-online.info/Forum_...53808308.html#3

Further Radiotherapy Questions and Answers: https://www.dupuytren-online.info/Forum_...1553463816.html

Form for Follow-Up Assessment of Dupuytren / Ledderhose Disease: https://www.dupuytren-online.info/Forum_...1558195801.html

Patient Related Outcome Measures (PROMs) - Quick-DASH: https://www.dupuytren-online.info/Forum_...1558198651.html

To treat or not to treat (early) that is the question: https://www.dupuytren-online.info/Forum_...1559373063.html

Patchwork radiotherapy, overlapping and edge of fields: https://www.dupuytren-online.info/Forum_...59783926.html#6

Miscellaneous

ALCOHOL as RISK FACTOR for DUPUYTREN & LEDDERHOSE DISEASE ?!https://www.dupuytren-online.info/Forum_...1564937697.html

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Radiation-Dose-Depth-Profile   Ledderhose   dupuytren-online   Miscellaneous   Fibromatosis   Radiotherapy   nobleresearch   Disease   Seegenschmiedt   Questions   orthovoltage   optimization   publication   accelerators   Dupuytren   Electrons-and-Photons   assessment   demonstrated   re-radiation   distribution