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HomeElectronicsReasonably priced CAT scan machine constructed with an Arduino

Reasonably priced CAT scan machine constructed with an Arduino


Reasonably priced CAT scan machine constructed with an Arduino

Arduino CrewAugust ninth, 2022

A CT (computed tomography), or CAT (computed axial tomography), scan is a kind of medical imaging approach wherein a number of X-ray “slices” come collectively to kind a pseudo-3D mannequin. CT scanners are the sorts of medical gear which can be so costly that producers don’t even trouble itemizing costs on their web sites. Suffice it to say that new CT scanners can value a number of million {dollars} — not precisely throughout the funds of many hobbyists. So Pyrotechnical used an Arduino to construct his personal CT scanner.

Disclaimer: X-ray emitters are probably harmful. Don’t play with them if you happen to don’t know what you’re doing!

Pyrotechnical’s CT scanner design depends on taking X-ray “slice” pictures rotationally, versus a stack of slices like a resin 3D printer. The reason being that X-ray pictures penetrate a complete object and there isn’t any approach to seize a real cross-sectional slice. However by snapping X-ray images of an object from many alternative angles, it’s doable to create what seems like a 3D view. It’s even doable to make use of these to assemble a 3D mannequin.

The X-ray emitter and display for this mission got here from an previous mammography machine. After the X-rays cross by the imaged object, they collide with the particular display that emits gentle. That display makes it straightforward to take photos of the X-ray projection. The Arduino Uno board performs three features. First, it spins a stepper motor to rotate a turntable on which the scanned object rests. Second, it prompts the X-ray emitter’s energy provide through a relay. Third, it prompts a Bluetooth distant by one other relay and that Bluetooth distant tells Pyrotechnical’s smartphone to snap a photograph.

Capturing an X-ray picture each eight levels of rotation yields 45 images. By changing these into frames of a video, one finally ends up with a fairly cool clip that offers viewers a “3D” X-ray look into the thing. With a nifty program akin to photogrammetry software program, one may even create a real 3D mannequin from the pictures — although it is vitally low-resolution.

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