Replies: 3 comments 3 replies
-
|
I'm not really sure what you're asking, can you clarify? If you're asking about how to define a material, there are some defaults in the 700icru.pegs4dat and 521icru.pegs4dat material pegs4 files. To create your own material, you can use egs_gui, or you can follow https://github.com/nrc-cnrc/EGSnrc/wiki/Generating-density-effect-correction-files-with-ESTAR and then define all of your materials using density correction files ("pegsless"). For viewing dose in VICTORIA and getting profiles from it, you don't need to use In terms of "what are the most appropriate dose values to take at a specific depth", are you asking how to interpret the table of dose values? It's just giving the list of dose in the voxels at the positions specified by the x,y,z boundaries, and the errors on each dose. |
Beta Was this translation helpful? Give feedback.
-
|
Thank you for your reply. To clarify the first question, I want to build a
phantom of water and put a material similar to the properties of
radiochromic film at a depth of 10 cm. As for the second question, I want
to find the dose value at a depth of 10 cm to use it when calculating the
Output factor. Can you explain to me the steps that must be followed after
running in DOSXZYnrc?
…On Tue, Sep 10, 2024, 5:59 PM Reid Townson ***@***.***> wrote:
I'm not really sure what you're asking, can you clarify? If you're asking
about how to define a material, there are some defaults in the
700icru.pegs4dat and 521icru.pegs4dat material pegs4 files. To create your
own material, you can use egs_gui, or you can follow
https://github.com/nrc-cnrc/EGSnrc/wiki/Generating-density-effect-correction-files-with-ESTAR
and then define all of your materials using density correction files
("pegsless").
For viewing dose in VICTORIA and getting profiles from it, you don't need
to use dosxyz dose outputs. Instead, take the 3ddose file that DOSXYZnrc
produces, and load that in VICTORIA. Then it can extract profiles and depth
dose curves from the 3ddose data. This would be equivalent to what you're
already doing using dosxyz dose outputs.
In terms of "what are the most appropriate dose values to take at a
specific depth", are you asking how to interpret the table of dose values?
It's just giving the list of dose in the voxels at the positions specified
by the x,y,z boundaries, and the errors on each dose.
—
Reply to this email directly, view it on GitHub
<#1184 (comment)>,
or unsubscribe
<https://github.com/notifications/unsubscribe-auth/BLFPBIFL4FJBWNCWJ2IYHQTZV4CMZAVCNFSM6AAAAABN6FMKY2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTANRQGM4TAOA>
.
You are receiving this because you authored the thread.Message ID:
***@***.***>
|
Beta Was this translation helpful? Give feedback.
-
|
To get the dose at 10cm on the central axis, import the 3ddose file into VICTORIA. Turn on the dose profile option, and click your cursor on the appropriate location (it displays the coordinates). You can get the dose directly in VICTORIA, or you can export the profile to csv. Make sure that you understand if there is one central voxel, or if you need to average the two voxels on either side of the central axis. |
Beta Was this translation helpful? Give feedback.
-
|
Yes I know these steps but my question is in the egslst file there is
DOSXZYnrc output dose as shown in the image above my question is where do I
use these values? Note that when using Victoria and using the 3ddose file
the dose values are very similar to those in the egslst file but the
difference is that in Victoria the values start from -14.5 while in the
egslst file they start from -15 note that my minimum boundary in
voxel=-15cm
…On Tue, Sep 10, 2024, 6:24 PM Reid Townson ***@***.***> wrote:
To get the dose at 10cm on the central axis, import the 3ddose file into
VICTORIA. Turn on the dose profile option, and click your cursor on the
appropriate location (it displays the coordinates). You can get the dose
directly in VICTORIA, or you can export the profile to csv. Make sure that
you understand if there is one central voxel, or if you need to average the
two voxels on either side of the central axis.
—
Reply to this email directly, view it on GitHub
<#1184 (reply in thread)>,
or unsubscribe
<https://github.com/notifications/unsubscribe-auth/BLFPBICMG4HBWF2JA34YJOLZV4FJ3AVCNFSM6AAAAABN6FMKY2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTANRQGQZTGMY>
.
You are receiving this because you authored the thread.Message ID:
***@***.***>
|
Beta Was this translation helpful? Give feedback.
-
|
I imagine that VICTORIA is reporting the center of the voxel as the position. |
Beta Was this translation helpful? Give feedback.
-
|
yes.in VICTORIA give value in bins for example -14.5 cm represent the center of the first bin, which collects all value from -15cm to -14cm |
Beta Was this translation helpful? Give feedback.
-
I have some questions:
the first question is if I need to define water phantom 30cm30cm30cm and determine material similar below code by DOSXYZnrc GUI how can I determine PEGS4?
Phantom description in cm
Water phantom (up to depth 10 cm)
Region 1:
Material: Water
Z-boundary: 0.0 to 10.0 cm
Top polyester layer (125 µm)
Region 2:
Material: Polyester
Z-boundary: 10.0 cm to 10.0125 cm
Active layer (28 µm)
Region 3:
Material: Active Layer
Z-boundary: 10.0125 cm to 10.0153 cm
Bottom polyester layer (125 µm)
Region 4:
Material: Polyester
Z-boundary: 10.0153 cm to 10.0278 cm
Water phantom (after the film)
Region 5:
Material: Water
Z-boundary: 10.0278 cm to the end
the second question is When selecting the voxel to know the dose values on the z-axis and then viewing the results using the Victoria program and then importing dose profiles to CSV, what are the most appropriate dose values to take at a specific depth, The dose values are in the CSV file or the egslst file. For more clarification, see the images below
can anyone help me, please
Beta Was this translation helpful? Give feedback.
All reactions