Publication

Direct Detection of Small Motion from Computed Tomography Images

Jean-Philippe Thiran
2013
Working Papers

Abstract

In this paper we present a new methodology to extract the small error-prone motion recorded during a Computed Tomography (CT) imaging directly from the sinogram. In comparison to the use of the usual reconstructed images, this approach has the advantage to minimize the reconstruction errors and artifacts. Moreover, the B-spline modeling of the motion has brought about the required accuracy for the detection of such a small motion. The windowing used can act as a kind of time regularization, in case of volume motion detection.

Official source

https://infoscience.epfl.ch/entities/publication/28ebe64f-135c-4034-9dac-7807883c58e8

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Jean-Philippe Thiran
2013
Working Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/28ebe64f-135c-4034-9dac-7807883c58e8

About this result

Related concepts (31)

Motion

In physics, motion is the phenomenon by which an object changes its position with respect to time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and frame of reference to an observer, measuring the change in position of the body relative to that frame with a change in time. The branch of physics describing the motion of objects without reference to their cause is called kinematics, while the branch studying forces and their effect on motion is called dynamics.

Motion capture

Motion capture (sometimes referred as mo-cap or mocap, for short) is the process of recording the movement of objects or people. It is used in military, entertainment, sports, medical applications, and for validation of computer vision and robots. In filmmaking and video game development, it refers to recording actions of human actors and using that information to animate digital character models in 2D or 3D computer animation. When it includes face and fingers or captures subtle expressions, it is often referred to as performance capture.

CT scan

A computed tomography scan (usually abbreviated to CT scan; formerly called computed axial tomography scan or CAT scan) is a medical imaging technique used to obtain detailed internal images of the body. The personnel that perform CT scans are called radiographers or radiology technologists. CT scanners use a rotating X-ray tube and a row of detectors placed in a gantry to measure X-ray attenuations by different tissues inside the body.

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