Overview
The phantom is to be used to validate the capability of Viewray
®
system to track and deliver a gated treatment based on MRI real
time imaging. Dosimetry capabilities of the phantom enhance the
validation of the whole Viewray system from the planning phase
to the final stage of gated treatment delivery.
This phantom was
designed in collaboration with Viewray and complies with
Viewray Requirements Specification document RQ-0034 Rev C.
Refer to Viewray protocol FTP-06 Rev B “Functional Test
Procedure” for detailed instructions regarding how to use this
phantom with the MRIdian
system
.
*Viewray® is a registered trademark (Oakwood Village, OH)
Description of the Phantom
The phantom consists of the following
subassemblies/components:
-
Custom Linear actuator (modified CIRS model 008A Linear
actuator as required by input of project 796-01-00).
-
Cross bars (front and back) for Actuator indexing to Viewray
system treatment couch.
-
Custom Motion Controller box (modified CIRS model 008A
Motion Controller as required by input of project 796-01-00 –
modified firmware) – includes standard 008A communication
cables (USB over Ethernet communication Controller-PC).
-
MRI signal generating Body with static non-deformable targets
and rigid organs at risk. Ion chamber
(Exradin A28)**
dosimetry enabled for all
targets and OARs.
**
Other ion chambers
are available. Refer to CIRS cavity codes at www.cirsinc.com/support for
corresponding CV number.
-
MRI signal generating Moving Rod with one dosimetry non-
deformable target and non-dosimetry and non-deformable
targets.
-
Supports (front and back) to index MRI Body to Viewray
system treatment couch. Supports allows Viewray Torso Coils
placement around the MRI Body.
-
Connector shafts between Actuator – MRI Body
-
Shipping cases
2