An Educational CT Scanner Prototype of a 3rd Generation CT Scanner

Abstract

This project aims to develop an affordable educational prototype of a
3rd generation CT scanner. The proposed prototype uses non-radiative
light sources and combines 3D printing, electronics components, and
filtered backprojection (FBP) algorithm to generate the cross-section
image of a transparent phantom. Key components include an LED light,
an Arduino Nano controller, and a camera. The prototype can capture
up to 200 images per scan cycle and successfully reconstruct the
internal structures of the phantom. However, there were some
limitations, including issues with the dataset, light source power, and
time efficiency. Results showed that the prototype could create a 3D
model of the lemon phantom, though it faced challenges due to the light
source and data limitations. Educational workshops were conducted
with 38 students and the prototype was well received by the students
as shown by the questionnaire results. Future improvements will focus
on increasing dataset resolution, using more powerful light sources like
laser diodes, and upgrading the camera system for better image quality
and faster processing.