IBAC System Features -IRIS Aperture and X-ray Beam Width Metrology -Output Factor Beam Intensity Measurements -3D Beam Profile Viewing and Measurements -Beam width accuracy to .05 mm. -Dose duration accuracy to 50 ms. -Point and Click or Automated Measurements -Flexible Script Driven Environment -Quick Data Export to Spreadsheets and Graphing Software -Network and Discrete Input/Output Interfaces -Laptop or desktop PC configuration includes 19 meter USB cable system. -Integration Services and Training 3D Beam Spot Viewing

IBAC Camera Module The IRIS Beam Aperture Caliper (IBAC) is the newest member of the XRV family of X-ray beam metrology systems. Combining precision metrology with high-energy radiation detection, the IBAC is a completely electronic alternative to film-based measurement. The IBAC mounts directly to the CyberKnife robot and performs a variety of measurements at the exit point of the X-ray beam from the IRIS collimator. Beam profiles and aperture widths can be obtained with a single mouse click, and automation scripts can be used to record changes in the beam shape and intensity. Beam and aperture images are archived for later review and measurements are easily integrated into spreadsheet programs for further analysis and report generation. The IRIS aperture and beam measurements are accurate to .05 mm and repeatability is typically .02 mm. The camera module comes with a 19 meter (54 feet) USB cable system so that the system PC and operator can be located safely away from any secondary radiation.

IBAC Operation The XRV IBAC system uses a plug-in scintillator to turn invisible X-ray beam fluence into visible light that can be measured with the highly sensitive CCD camera and sophisticated metrology software. The scintillator can also be removed for direct viewing of the IRIS aperture as it is illuminated by LEDs built into the IRIS adapter portion of the IBAC. The camera is protected from secondary radiation by a lead-lined enclosure. The WinLVS software application is used to acquire, analyze, and archive IBAC images. Image processing and pattern recognition algorithms separate the beam spot from the secondary radiation noise on the images. Precision metrology routines measure the beam spot and aperture widths multiple times voting on the best answer. Data is displayed on the captured image as well as sent to disk in a Comma Separated Value format compatible with spreadsheet applications. Beam and aperture measurements can be automated with an easy-to-use scripting environment. Shown below is the beam caliper mode of the IBAC. X-ray fluence (blue) illuminates the scintillator and the visible representation of the beam (yellow) proceeds to the camera for measurement. The aperture gauge mode of the IBAC illuminates the lower collimator of the IRIS with LED light (blue) and measures the aperture with .05 mm resolution. Thank you for viewing our website. You are visitor #1518

IBAC Specifications: Accuracy:1 Beam Width: +-.05 mm Repeatability: +-.02 mm (typical) Aperture Width: +-.05 mm Repeatability: +-.02 mm (typical) Optical System:1 Resolution: 1280 x 960 pixels binned to 640x480 pixels Capture Rate: 20 frames/sec (typical) Lens MTF: Megapixel resolution Camera Interface: USB Camera Shielding:2 Camera Top: 12.7 mm lead alloy Camera Sides: 12.7 mm lead alloy CCD Lifetime: ~1,500 beam hours Camera Module Physical: H x W x D: 31.75 x 15.25 x 64.75 cm Weight: 9.1 kg (20 lbs) Enclosure Material: Aluminum and stainless steel Interface: Capture Trigger: GUI, Script, I/O, or Network watch-file Computer Components: Computer: HP Pavilion laptop or MicroATX case desktop Misc: Three 5.0 meter USB Repeater cables USB minihub and adapter Windows 7 USB Dongle License General: Electrical Power: 110V, 2 or 4A 9V battery Environment: 5 to 30 degrees C 90% humidity, no condensation Minimal vibration NOTES 1. Contact us for higher camera resolutions. 2. Contact us for custom shielding requirements. The camera may be replaced for a service fee when the number of weak pixels begins to impact measurement accuracy. This time duration varies on use but is estimated to be approximately 3 years. CyberKnife and IRIS are registered trademarks of Accuray Incorporated.