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Sri Lanka WS
Advanced Technology
(42:23)
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by tcc, 2011-04-19 20:37, 人氣(5870)
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標題
1.
Advanced Technology
2.
Topics
3.
Why Respiratory Gating?
4.
GTV motion inhale vs. exhale
5.
GTV motion with time
6.
Ideally what we want to do (IGRT)
7.
Until then …Solutions to manage organ motion…..
8.
4DCT Scanners with RPMTM Respiratory Gating
9.
Brilliance 4D CT & Varian RPM Respiratory Gating System
10.
Gate Selection-Phase or Amplitude
11.
Retrospective 4D CT Image Acquisition
12.
4D CT Image Definitions
13.
CT software to perform motion study
14.
Planning Phases (If motion > 5 mm)
15.
Gated Radiation Delivery
16.
Gated Treatment
17.
Treatment Phase
18.
Planning Phases (If motion > 5 mm)
19.
Pre treatment verification of tumor position with gating window
20.
Portal Imager Set-up
21.
Re-acquire CT at mid fractionation
22.
Deep Inspiratory Breath Hold
23.
Studies show the importance of minimizing heart dose….
24.
Techniques that are available to reduce heart toxicity while not compromising the PTV irradiation:
25.
Slide 25
26.
CT and planning stage
27.
Comparison of contours
28.
Dose comparison between free breathing and DIBH plans
29.
Pre treatment imaging
30.
Overlap of extracted RPM data for multiple days of Tx @Trilogy
31.
KV images at treatment table
32.
Bony anatomy contours
33.
Bony anatomy contours
34.
Image Guided Radiation Therapy
35.
IGRT technologies
36.
Application of Images
37.
MV CBCT Lung Registration
38.
MV CBCT Pelvis Registration
39.
kV CBCT Lung
40.
kV CBCT Pelvis
41.
Efficacy of Image Guidance Radiotherapy Procedure for SBRT
42.
IGRT technique used for SBRT lung treatments
43.
IGRT technique used for conventional lung treatments
44.
Reduction in normal tissue dose volume parameters Grills et al. IJROBP Vol 70, (4) 1045-1056 (2008)
45.
Reduction in normal tissue dose volume parameters
46.
Remember These Reductions are with …
47.
Previous investigators have shown…
48.
Series of stereotactic lung radiotherapy outcomes, with and without IGRT
49.
Thank You!
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