[IGSTK-Developers] Does IGSTK need any calibration components?

[Hui Zhang]

Hi, all,

Does IGSTK need any calibration components, like track tool calibration and 
ultrasound probe calibration?

One important part of current IGSTK is the tracker component. When we use 
tracker tools, those tools must be calibrated using pivot method to 
calculate the transform from sensor/marker to the hot point (tip or 
something else). Normally this step is done by using the software from the 
company like NDI ... But sometime it is important to have the ability to do 
the on-site calibration. As I know, one of Philips software integrates this 
function in their navigation system. We have developed one class here to 
calculate the transform through those pivot samples. If IGSTK needs this 
component, I can try to contribute this part and make it state 
machine -able.

Another component we have here is the point-based ultrasound probe 
calibration class, which can handle the freehand ultrasound calibration by 
using the pointer or some phantoms like cross-wire phantom. This calibration 
component is essential to integrate ultrasound ability to image guided 
system. It can be extented to calibrate the general imaging device to 
trackers.

Regards,

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Hui (James) Zhang, Ph.D.

Imaging Science and Information Systems (ISIS) Center
Department of Radiology
Georgetown University Medical Center
2115 Wisconsin Avenue, Suite 603
Washington, DC, 20007

Work phone: 202-687-2902
Work fax: 202-784-3479
Cell phone: 240-476-9361
MSN: zh_skyfox at hotmail.com
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