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Tomography Through An Infinite Grid Of Resistors | Hackaday
One of the vast untapped potentials of medicine is the access to imaging equipment. A billion people have difficulty getting access to an x-ray, and that says nothing about access to MRIs or CAT scans. Over the past few years, [Jean Rintoul] has been working on a low-cost way to image the inside of a human body using nothing more than a few electrodes. It can be done cheaply and easily, and it’s one of the most innovative ways of bringing medical imaging to the masses. Now, this is a crowdfunding project, aiming to provide safe, accessible medical imaging to everyone.

It’s called Spectra, and uses electrical impedance tomography to image the inside of a chest cavity, the dielectric spectrum of a bone, or the interior of a strawberry. Spectra does this by wrapping an electrode around a part of the body and sending out small AC currents. These small currents are reconstructed using tomographic techniques, imaging a cross-section of a body.
sumi  tomography  spectra  opensourcd  hackaday  mri  medical  biomedical  imaging 
5 weeks ago by cyberchucktx
Pouchography, CT, and MRI Features of Ileal J Pouch-Anal Anastomosis : American Journal of Roentgenology : Vol. 187, No. 6 (AJR)
Small Bowel Obstruction - CT Scan See Figure 5 a and b.
Small-bowel obstruction is the most frequent complication of pouch-anal anastomosis, with the obstruction point classically on the ileostomy closure site and in the small bowel distal to it. Small-bowel obstructions are reported to occur in 33% of patients, with most of these obstructions occurring more than 30 days after ileostomy closure [2]. Most of these obstructions are caused by postoperative adhesions, strictures, and small-bowel volvulus. Surgical intervention is usually necessary, and CT examination can help identify the small-bowel obstruction site (Figs. 5A and 5B)
CT-scan  MRI  J-Pouch  Anal-Anastomosis  SBO  bowel-obstruction 
9 weeks ago by negril
Stradwin was developed as a tool for freehand 3D ultrasound calibration, acquisition, measurement and visualisation. To use it for freehand 3D ultrasound you need a PC running either Microsoft Windows or Linux, a position sensing device to track the trajectory of the ultrasound probe and a conventional two-dimensional ultrasound machine.

Stradwin is a useful tool for visualisation from 3D medical data of any sort. It can load most types of DICOM data or image sequences, and produce very high quality surface models which can also be turned into movies using scripts. It can also be used for cortical bone mapping from DICOM CT data.
mri  ct  visualisation  3d  tool 
11 weeks ago by jottevanger

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