Publication

Simultaneous Registration and Bias Correction of Brain Intra-operative MR Images

Jean-Philippe Thiran, Torsten Butz
2003
Conference Papers

Abstract

Intra-operative MR imaging is an emerging tool for image guided (neuro)surgery. Due to the small size of the magnets and the short acquisition time, the images produced by such devices are often subject to distortions. In this work, we show the particular case of images provided by an ODIN device (Odin Medical Technologies, Newton, MA 02458, USA). Such images suffer from geometric distortions and an important bias field in the luminance. In order to simultaneously correct these deformations, we propose to register a preoperative ODIN image with a diagnosis MR high resolution image while compensating the bias field.

Official source

https://infoscience.epfl.ch/entities/publication/e8cdb968-d991-4e1e-b0a3-98a2c5cabeb1

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Jean-Philippe Thiran, Torsten Butz
2003
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/e8cdb968-d991-4e1e-b0a3-98a2c5cabeb1

About this result

Related concepts (32)

Medical imaging

Medical imaging is the technique and process of imaging the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology). Medical imaging seeks to reveal internal structures hidden by the skin and bones, as well as to diagnose and treat disease. Medical imaging also establishes a database of normal anatomy and physiology to make it possible to identify abnormalities.

Bias

Bias is a disproportionate weight in favor of or against an idea or thing, usually in a way that is closed-minded, prejudicial, or unfair. Biases can be innate or learned. People may develop biases for or against an individual, a group, or a belief. In science and engineering, a bias is a systematic error. Statistical bias results from an unfair sampling of a population, or from an estimation process that does not give accurate results on average. The word appears to derive from Old Provençal into Old French biais, "sideways, askance, against the grain".

Image

An image is a visual representation of something. An image can be a two-dimensional (2D) representation, such as a drawing, painting, or photograph, or a three-dimensional (3D) object, such as a carving or sculpture. An image may be displayed through other media, including projection on a surface, activation of electronic signals, or digital displays. Two-dimensional images can be still or animated. Still images can usually be reproduced through mechanical means, such as photography, printmaking or photocopying.

Related publications (7)

Simultaneous Registration and Bias Correction of Brain Intra-operative MR Images

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Inverse Rendering for High Resolution PET Image Reconstruction with PSF and TOF Modeling

Research Proposal

Ongoing standardization efforts