Patent · US Active

Temperature measurement near an ice ball using a proton resonance frequency method and recalculation of susceptibility artifacts

US8706190B2 · kind B2 · utility

2Cited by

5References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Patrick Gross · Langensendelbach, DE
Antje Kickhefel · Erlangen, DE
Joerg Roland · Hemhofen, DE
Rares Salomir · Bonneville, FR

Key dates

Filing date	Nov 10, 2010
Grant date	Apr 22, 2014
Priority date	—
Expiry date	Apr 27, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/56536
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a method or system for magnetic resonance imaging based temperature monitoring for real-time feedback to a physician for a cryoablation therapy of a lesion which creates an ice ball of the lesion to induce cell death, the magnetic resonance imaging system, using proton resonance frequency imaging, obtains a real-time temperature image of the ice ball of the lesion undergoing the cryoablation therapy and the adjacent surrounding tissue. By use of an algorithm, correcting temperature errors at a border of the ice ball are corrected in the real-time image, the temperature error correction correcting susceptibility contrast errors caused by a distortion of the local magnetic field at the border of the ice ball.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.