Micropos releases videos on real-time positioning and in-situ dosimetry

27 October 2012 – Micropos Medical has released five new videos on the RayPilot® system for increased precision in radiotherapy of cancer. The videos shows different research projects going on:

• MLC-tracking
• Real-time positioning and In-Situ dosimetry
• Surface tracking

All videos can be watched below or on: http://micropos.se/index.php/scientific

RayPilot® is CE-certified and is installed at European hospitals where it is used for real-time electromagnetic positioning of the prostate during radiotherapy.

RayPilot® has these features:

• ROI localization 30 times per second
• Automatic patient identification
• In-Situ dosimetry*

* Dosimetry feature to be released in 2013

MLC Tracking with Dosimetry

http://youtu.be/gQr323Vott8

RayPilot® electromagnetic tumor tracking system used for MLC Tracking on a Varian RapidArc®. Here used together with the Scandidos Delta4 dose QA system.

The RayPilot® system is placed directly on the carbon fibre couch top. A robotic phantom is moving a "target" consisting of a RayPilot® implantable transmitter and a Delta4 phantom. The motion is detected by the RayPilot® system and information is sent to the Varian RapidArc® collimator so it follows the target continuously. The work is led by Associate Professor Per Rugård Poulsen and PhD Student Thomas Ravkilde at the Aarhus University Hospital in Denmark.

The RayPilot® is CE-certified for prostate tracking and gives the position 30 times a second. It also has automatic patient identification. In-situ dosimetry is work in progress. This video shows a research set-up.

RayPilot® Dosimetry Demo

http://youtu.be/WesL80SLZmk

This video shows a demo of the Micropos RayPilot® System with integrated dosimetry feature to be released. In this example a light sensitive dosimeter is used and is included in the positioning device. The "beam" is in this case the lamp that you see turns on and off and you could also see the motion when we are moving the box where the RayPilot® transmitter is.

The position, dose rate and the accumulated dose is presented in real-time and could also be streamed to other systems in real-time. This video shows a research set-up.

RayPilot® System Response Video

http://youtu.be/uLKZrXgCIJk

This video shows the response of the Micropos RayPilot® System. You can see the transmitter in the middle of the red ball and the receiver is in the sensor plate on the couch. Normally the transmitter is implanted into the prostate for target tracking. The position is acquired 30 times per second with sub mm accuracy. All data could be streamed out (including the dose*) to other systems.

RayPilot® used for chest/surface tracking

http://youtu.be/spxZIFNVZPY

This video shows the Micropos RayPilot® System for surface tracking. The position is acquired 30 times per second with sub mm accuracy. All data could be streamed out (including the dose*) to other systems. This video shows a research set-up.

* Dosimetry to be released

RayPilot® used for MLC tracking at the Aarhus University Hospital

http://youtu.be/CzlFBdoJg6I

RayPilot® used for MLC tracking at the Aarhus University Hospital, Published as a poster and an article. Fastest system in the world when published. This video shows a research set-up. Geometric accuracy of dynamic MLC tracking with an implantable wired electromagnetic transponder THOMAS RAVKILDE [1], PAUL J. KEALL [2,3], KLAUS HØJBJERRE [1], WALTHER FLEDELIUS [1], ESBEN WORM [1] & PER R. POULSEN [1,4]

1. Department of Oncology, Aarhus University Hospital, Denmark
2. Central Clinical School, University of Sydney, Australia
3. Department of Radiation Oncology, Stanford University, CA, USA
4. Institute of Clinical Medicine, Aarhus University, Denmark

Article in Acta Oncologica, 2011; 50: 944–951

For further information contact:

Micropos Medical AB (publ), +46-31-772 80 99, info@micropos.se

About Micropos Medical AB (publ):

Micropos Medical AB (publ) (www.micropos.se) is a Swedish medical device start-up that was founded in 2003 as a result of four physicians’ long clinical experience in the therapeutic radiation oncology field (cancer treatment). The company has developed the RayPilot® system for increased precision in radiotherapy of prostate cancer. The RayPilot® system is an electromagnetic positioning system that initially enables real time position of the prostate for a fast and objective set-up and for continuous positioning during the treatment. A precise and safe localization of the tumor can dramatically improve the outcome of the treatment, particularly for hypofractionated protocols. The RayPilot® system consists mainly of three parts; a transmitter that is placed in the ROI, a receiving system that is placed directly on any existing treatment coach and software that continuously shows where the tumor is and where to beam. The transmitter is removed after the final treatment in order to enable MRI follow-up.

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