In-vivo X-Ray micro-imaging and micro-CT with the Medipix2 semiconductor detector at UniAndes
I. Caicedo 1*, B. Gomez 1, C. Avila 1, C. Bula 1, C. Roa 1, J. C. Sanabria 1
1 High Energy Physics Group. Department of Physics. Universidad de Los Andes, Bogotá, Colombia.
This poster contains the procedure to obtain micro-CTs and to image moving samples using the Medipix2 detector, with its corresponding results.
The high granularity of the detector makes it suitable for micro-CT. We used commercial software (Octopus) to do the 3D reconstruction of the samples in the first place, and we worked on our own free reconstruction software afterwards.
Medipix has a very fast response (~ hundreds of nanoseconds) and high sensibility. These features allow obtaining nearly in-vivo high resolution (55 µm * 55 µm) images. We used an exposure time of 0.1 s for each frame, and the resulting images were “animated”.
The High Energy Physics Group at UniAndes is a member of the Medipix3 collaboration. Its research activities are focused on developing set-ups for biomedical applications and particle tracking using the Medipix2 and Timepix detectors, and assessing the feasibility of the Medipix3 detector for future applications.
Key Words: Medipix; Pixel detectors; In vivo X-ray micro-Imaging; micro-CT.