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QADOS Theraview Demonstration
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Theraview's high resolution digital images allows oncologists to verify patient ... In all modes the high resolution image is automatically optimised, enhanced ... – PowerPoint PPT presentation
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Title: QADOS Theraview Demonstration
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QADOS Theraview Demonstration
- Radiation Therapy
- Smart? integration
- Real-Time Image Processing
- TheraView Technology
- by Cablon Medical BV
- portal_at_theraview.com
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An ISO related solution for any gantry
- Attachable to any accelerator
- Siemens
- Elekta
- Varian / GE
- Scanditronix
- Hitachi
- Mitsubishi
- Theratronics (MDS Nordion)
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Siemens
- Primus
- Mevatron
- BeamTheraView
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Elekta / Philips
- SL types 15,18,25
- Sli types
- SL 75
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Varian / GE
- GE OEM product Targetview
- Saturne I II , Saturne 41
- Saturne 42, Saturne 43
- Varian
- 600
- 2100, 2300
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Scanditronix
- MM22
- MM50
- Hitachi Version
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Clinical Value of Portal Imaging
- Reduces field placement errors in respect to ISO
centre - Checks Field shape / MLC and block errors
- Theraviews high resolution digital images allows
oncologists to verify patient positioning before
AND throughout the entire treatment procedure
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System Components
- Detector Assembly
- Scintillator Phosphor layer screen detects
high quality images at low dose (1-3 mu) - Instant image access after initial exposure as
treatment proceeds - Highly front-edge reflective mirror
- High resolution video camera
- Lowgtgt 10001 signal to noise ratio
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Detector Specifications
- Detector size up to 400 mm x 400 mm
- field of view 280 x 280 mm
- lt 0.8 LP/mm resolution
- Contrast detectability of 1
- Camera resolution of 1000 lines
- Image frames of 512 V x 512 H x gt14 bit
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Detector assembly
- Assembly can be retracted and lowered for minimum
interference during patient set-up - Remote control motorised positioning
- After extension into field,
- detector can be moved vertically to optimise
viewing distance from iso-centre v.o.f.. - gtV3.0 Data automatically transferred to input
module
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Workstation
- SUN SPARC station
- 21 Colour monitor
- Keyboard and mouse
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Reference Image
- Simulator image
- Film Digitizer
- Flat bed scanner
- Digital link
- DRR
- Dicom send/receive
- Field size
- Symmetric
- Asymmetric
- MLC
- Blocks
- Anatomical template
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Reference Input Screen
- Direct digital input and / or
- Dicom RT SC / DRR
- Scanner or Digitiser
- Powerful drawing tools for reference input of
- Field size and shape
- Blocks / MLC info
- Anatomical template
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Image Smart Acquisition
- Treatment -A sequence of images recorded and
displayed for ON-Line verification and movie loop
replay - Single exposure -Low dose (3 Mu or less) set-up
image - Double Exposure -Treatment field open field
image acquired in sequence and superimposed to
display a composite image - In all modes the high resolution image is
automatically optimised, enhanced and displayed
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Smart Integration ( 3 steps)
- Input Patient Field ID,
- Gantry Angle, Detector Height
- ( automated in late 2001 TheraView)
- Pre calibrated dose rate setting for
- Optimal beam start detection algorithm
- Optimal low MU imaging
- Push Begin
No patient related parameters are needed for
optimal imaging !!.
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Acquisition
- A Prostate field Lateral and AP
- Acquired with treatment mode
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Image verificationTargetCheck
- Automatic field size shape detection
- Position verification with use of anatomical
template - Saves the results of field placement detection
- Generates a graph with the patient position
displayed in time - Produces a screendump with a Codonics or network
printer
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Target Check
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Graph
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TargetCheck window
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Image Dose acquisition
- V3.0 brings these modules
- DISPLAY RELATED
- Smart Acquisition
- quasi 14bits frame acquisition by optimal AD
conversion and filtering - Segmented histogram
- Integration of N frames in 16bits
- scaling to 8-bit by autogamma
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Image Dose acquisition
- V3.0 brings these modules
- DOSE RELATED Minimal Sparc 5-170
- Smart Acquisition
- quasi 14bits frame acquisition by optimal AD
conversion and filtering - Segmented histogram
- Integration of N 16 bits frames in 32bits
accumulator - Output through special channel
- 16 bits weighted frames
- 32 bits accumulator
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Windows connectivity
- Makes it possible to access TheraView as a file
server, from a PC in a MS Windows Network
environment
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Windows connectivity
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Local web browser.
- Simple review functionality, password protected
from anywhere in the hospital intranet - On-line manual(s)
- Set-up of TheraView parameters and peripherals
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Local web browser.
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Postscript
- Thank you !!!
