[Gate-users] Percent depth dose anomaly

[Mahdjoub Hamdi]

Hi James,

I'm not the expert on that, but as an intuitive suggestion, since the two codes give the same results, it seems that there is a mismatch between the simulated and the experimental X-ray spectra. Did you check your X-ray spectrum against the experimental one?

...

Mahdjoub Hamdi
Wustl, MO, USA

From: Gate-users <gate-users-bounces at lists.opengatecollaboration.org> On Behalf Of MURPHY, James (ROYAL CORNWALL HOSPITALS NHS TRUST)
Sent: Thursday, September 05, 2019 10:03 AM
To: gate-users at lists.opengatecollaboration.org
Subject: [Gate-users] Percent depth dose anomaly

Hi
I have found something strange and hope you may be able to help. I have a phase space for a position below the linac head and I have used this as the source for a phantom dose measurement in PRIMO (PENELOPE variant) to get a depth dose which matches our water tank data. But when I use this in Gate (simple geometry, 1m air and 40 cm water) I get a much larger depth dose, dmax is the same though. I even get the same results using penEasy (another PENELOPE variant).I would be very grateful for any ideas.

[cid:image004.png at 01D563CE.94066EC0]
Regards.


James Murphy
Trainee Medical Physicist
Radiotherapy Physics
Sunrise Centre
Royal Cornwall Hospitals Trust
Truro
Cornwall
TR1 3LJ

' 01872 25 8321/8320
          Ext 8321/8320
*    james.murphy18 at nhs.net<mailto:james.murphy18 at nhs.net>

[cid:image002.jpg at 01D563E1.10F523B0]



********************************************************************************************************************

This message may contain confidential information. If you are not the intended recipient please inform the
sender that you have received the message in error before deleting it.
Please do not disclose, copy or distribute information in this e-mail or take any action in relation to its contents. To do so is strictly prohibited and may be unlawful. Thank you for your co-operation.

NHSmail is the secure email and directory service available for all NHS staff in England and Scotland. NHSmail is approved for exchanging patient data and other sensitive information with NHSmail and other accredited email services.

For more information and to find out how you can switch, https://portal.nhs.net/help/joiningnhsmail
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20190905/6b389932/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 45192 bytes
Desc: image001.png
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20190905/6b389932/attachment-0001.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 3429 bytes
Desc: image002.jpg
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20190905/6b389932/attachment-0001.jpg>