Referenceless MR thermometry for monitoring thermal ablation in the prostate.

Referenceless MR thermometry for monitoring thermal ablation in the prostate. Research Abstract Details 

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Referenceless MR thermometry for monitoring thermal ablation in the prostate. Abstract Text:

Viola Rieke,Adam M Kinsey,Anthony B Ross,William H Nau,Chris J Diederich,Graham Sommer,Kim Butts Pauly,

Referenceless proton resonance frequency (PRF) shift thermometry provides a means to measure temperature changes during minimally invasive thermotherapy that is inherently robust to motion and tissue displacement. However, if the referenceless method is used to determine temperature changes during prostate ablation, phase gaps between water and fat in image regions used to determine the background phase can confound the phase estimation. We demonstrate an extension to referenceless thermometry which eliminates this problem by allowing background phase estimation in the presence of phase discontinuities between aqueous and fatty tissue. In this method, images are acquired with a multiecho sequence and binary water and fat maps are generated from a Dixon reconstruction. For the background phase estimation, water and fat regions are treated separately and the phase offset between the two tissue types is determined. The method is demonstrated feasibile in phantoms and during in vivo thermal ablation of canine prostate.

Referenceless MR thermometry for monitoring thermal ablation in the prostate. Publishing Authors By Initials

V Rieke,AM Kinsey,AB Ross,WH Nau,CJ Diederich,G Sommer,KB Pauly,

For similar diagnosis: diagnostic techniques and procedures: diagnostic imaging: thermography research abstracts see: diagnosis: diagnostic techniques and procedures: diagnostic imaging: thermography research

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Referenceless MR thermometry for monitoring thermal ablation in the prostate. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: IEEE transactions on medical imaging

VOLUME: 26

Page Numbers: 813-21

Journal Abbreviation:

ISSN: 0278-0062

DAY: 3

MONTH: Jun

YEAR: 2007

Referenceless MR thermometry for monitoring thermal ablation in the prostate. Information

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LANGUAGE: eng

NlmUniqueID: 8310780

Referenceless MR thermometry for monitoring thermal ablation in the prostate. Keywords Mesh Terms:

KEYWORDS: Thermography

MESH TERMS: methods

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Grant and Affiliation Information for Referenceless MR thermometry for monitoring thermal ablation in the prostate.

AFFILIATION: Radiological Sciences Laboratory, Department of Radiology, Stanford University, Stanford, CA 94305, USA. vrieke@stanford.edu

Country: United States

AGENCY: United States NCI

GRANT: R01 CA111891

ACRONYM: CA

MEDLINETA: IEEE Trans Med Imaging

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