Publication
Title
X-ray stereo imaging for micro 3D motions within non-transparent objects
Author
Abstract
We propose a new technique to measure the 3D motion of marker points along a straight path within an object using x-ray stereo projections. From recordings of two x-ray projections with 90o separation angle, the 3D coordinates of marker points can be determined. By synchronizing the x-ray exposure time to the motion event, a moving marker leaves a trace in the image of which the gray scale is linearly proportional to the marker velocity. From the gray scale along the motion path, the 3D motion (velocity) is obtained. The path of motion was reconstructed and compared with the applied waveform. The results showed that the accuracy is in order of 5%. The difference of displacement amplitude between the new method and laser vibrometry was less than 5μm. We demonstrated the method on the malleus ossicle motion in the gerbil middle ear as a function of pressure applied on the eardrum. The new method has the advantage over existing methods such as laser vibrometry that the structures under study do not need to be visually exposed. Due to the short measurement time and the high resolution, the method can be useful in the field of biomechanics for a variety of applications.
Language
English
Source (book)
Three-dimensional image processing (3DIP) and applications : 2 / Baskurt, Atilla M. [edit.]; et al. [edit.]
Publication
S.l. : SPIE, 2012
ISBN
9780819489371
Volume/pages
8290(2012), p. 82900T,1-82900T,13
Article Reference
82900T
ISI
000304302300028
Medium
E-only publicatie
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 17.02.2012
Last edited 20.07.2017
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