A Web interface to cloud-based Monte Carlo simulations for TrueBeam and C-linac
description
Transcript of A Web interface to cloud-based Monte Carlo simulations for TrueBeam and C-linac
A Web interface to cloud-based Monte Carlo simulations
for TrueBeam and C-linac
Jong In ParkM.S. student
http://radiotherapyresearchtools.com
Contents
What is the Virtual Linac
Application of Virtual Linac
How can we use (register) ?
Background
• Field-independent components were not open to the public - Target, ion chamber, carousel
Varian provides ‘just’ phase space file for TrueBeam simulation
Purpose of Virtual LinacVarian has developed a cloud based web application, called “Virtual Linac”
Linac Monte Carlo simulation as service - Enable the research community
- Validated geometry (by Varian)
- Fast computing is available w/o server
http://radiotherapyresearchtools.com
2013. 05. 06 version 84 (open to the public)
~ 2013. 11. 18 version 94
Now updating ..
Simulation Mechanics
Input file
Dose distribution
User
http://radiotherapyresearchtools.com
Run MC simulation
Amazon Web Service
Elastic compute cloud 2
Use Case 1 – General case
Dose distribution
http://radiotherapyresearchtools.com
DOSXYZnrc
Virtual Linac
Check a plan
http://radiotherapyresearchtools.com
Virtual Linac Graphic User Interface
Validation of Simulation ResultsPresented in ‘AAPM’ meeting
- Simulation results were well matched with measurement
http://radiotherapyresearchtools.com
Use Case 2 – What can we change ?
Investigate changes to the treatment head- Low energy, medium energy, high energy, imaging,- Custom is also available
http://radiotherapyresearchtools.com
Treatment head
Use Case 2 – What can we change ?Originally, in TrueBeam simulation
Can define “Target”
Virtual Linac
Using carbon target
Use Case 2 – Treatment head
http://radiotherapyresearchtools.com
Flattening filter
- Open port (FFF), 4X, 6X, 8X, 10X, 15X, 18X, 20X
Location of writing phase space file
- above the jaw - below the mylar - isocenter - 95 cm from source - 150 cm from source
Use Case 3 – TrueBeam Developer mode
• What exactly is Developer Mode?
- A method to control all motion axes and imaging through
customized XML scripts
Image by Varian
• Dose distributions from TrueBeam Developer Mode XML file - non-Monte Carlo expert
http://radiotherapyresearchtools.com
Use Case 3 – TrueBeam Developer mode
TrueBeam Developer mode ‘xml’
Still to come !
How can we use (register) ? Requirements
① Send an email to – Daren Sawkey (Varian Medical Systems) - expression of register
How can we use (register) ? Requirements
② IP address as seen by the outside world (google “what’s my ip”)
How can we use (register) ? Requirements
③ Amazon Web services account number
• You can sign up for the Amazon Web Services (AWS) at aws.amazon.com.
• The AWS documentation is great, and available at aws.amazon.com/documentation/ec2 for EC2.
• After the sign up, click my account
How can we use (register) ? Requirements④ A completed license agreement
Varian the opportunity to review a draft copy of the proposed publication or presentation for review and approval at least 45 days prior to..
He or she has the power and authority
How can we use (register) ? Once the register, you can get started- Log in to AWS
How much is it? Payment ! When ?
Between Amazon web service and users
- Running the instance (Table)- Data transfer
“Linux” is cheaper than “window”
Can save cost reduced to 1/10 by using ‘spot request’ (highly recommend)
On-demand instance
Unit: $
Summary
• More detail information http://radiotherapyresearchtools.com
• Varian validated geometry of component - Full TrueBeam simulation is available
• Fast parallel computing
• TrueBeam developer mode will be soon
• Reasonable cost with ‘spot request’
Thank you for your attention !