IGRTat UCSF
EPI & CBCT
by Michèle Aubin MSEE
IGRT Steps
Prescribe
Plan
Set up
Review
Physicians
Dosimetrists
Therapists
Physicians
• Create and
approve a
prescription
• Prepare the
reference
data
in Site Setup
for EPI and
CBCT
• Initialize and
schedule imaging
• Review each
images and
shifts
in Mosaiq
before
next treatment
• Send the
Plan,
DRRs, CT
and ISO to
Mosaiq
• Associate the
CBCT
• Place an order
for daily or
weekly
imaging
(EPI and/or
CBCT)
• Print out the
• Associate a protocol to MVCB
• Align the patient
• Archive & clean
the database
Place an Order in Mosaiq
Prescribe
Remind the dosimetrist
Work done in Pinnacle and Mosaiq
• Type of Imaging (2D or 3D)
• If 3D, inform of which contours to send for alignment
• Print out the CT and ISO
Plan
Assist the therapist
Syngo Station
• Verify that Isocenter on the patient’s CT match the
printout
• Guide the patient’s alignment on dry run
Set up
Acquire and Align
RTT Syngo Station
Set up
Prostate Patient
H&N Patient
Align the Patient
Syngo Station
• Prostate + Markers: always performed by RTT
• Head&Neck: < 2 mm  no move
2 mm ≤ shift ≤ 5 mm  Move by RTT
shift > 5 mm : call attending
Set up
Align the Patient
Syngo Station
Every moves (Lat, Long, Vert)
are typed in Mosaiq by RTT
Set up
Align the Patient
Set up
RTT Syngo Station
• Prostate
• H&N
• Lung
4 MU to 6 MU
3 or 4 MU
4 to 6 MU
Verify the Images and Shifts
Review
Mosaiq
• Can verify and approve images in any Mosaiq station.
• In order to charge and be legal, all IGRT have to be
approved before next treatment
•
Thank You!