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Integrated treatment head for HIFU therapy in MRI Disclosure Number: IPCOM000018018D
Original Publication Date: 2001-Dec-01
Included in the Prior Art Database: 2003-Jul-23
Document File: 1 page(s) / 140K

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Related People

Colette Charbonnier: AUTHOR [+7]


High Intensity Focussed Ultrasound (HIFU) is a therapy that enables to perform cancer surgery by localised heating of the tumour. The tumour tissues are burnt by focussed ultrasound waves. A transducer emits these ultrasound waves.

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Integrated treatment head forHIFU therapy in MRI

Idee: Colette Charbonnier, F-Villeurbanne;

Robert Nemeth, A-Gross St. Florian;Jianmin Wang, Erlangen;Jürgen Jenne, Mannheim;Robert Zachmann, Forchheim;Frank Supplieth, Fürth;Andreas Speck, Möhrendorf

High Intensity Focussed  Ultrasound  (HIFU)  is  atherapy  that  enables  to  perform  cancer surgery bylocalised heating of the tumour. The tumour tissuesare burnt by focussed ultrasound waves. A transduceremits these ultrasound waves.

On  the  other  hand Magnetic Resonance Imaging(MRI) is a diagnostic  tool  to  visualise  cancer  tu-mours. MRI employs large  magnets  for  creating  ahomogeneous magnetic field and gradients coils forcreating magnetic field gradients. These adjustmentsof the fields enable to select which tissue slices willbe imaged.

MR imaging also employs radiofrequency (RF) coilsin order to apply an RF field causing the tissue toresonate and create an MR response signal. The MRresponse signal is captured by a receiver coil, whichtransmits it to a processing unit and so generates animage.

MRI is useful in planning HIFU procedures. Moreo-ver, a view of the region heated by HIFU is providedwith the use of MR temperature sensitive pulse se-quences. Finally, MRI distinguishes between viableand treated tissue.

The idea presented here provides a system that en-ables to perform surgery by HIFU under MRI moni-toring. Especially, it is an integrated treatment unitfor breast cancer HIFU therapy in MRI.

This unit, that can fit in any MR magnet having asliding table to hold the subject, includes all the ele-ments which are necessary for the treatment like atransducer that delivers the ultrasound waves, a me-chanical system to move the transducer in order toscan a tumour with the focal point and to treat a vol-ume of tumour, and an MRI receiver coil in order toaquire images of the treated area with the best signal-to-noise ratio (SNR...