2018 BFY III Abstract Detail Page

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Abstract Title: W39: Medical Imaging hands on Computed Tomography with DeskCATTM-interactive lab & classroom demonstration without irradiating the students
Abstract: "Computed Tomography (CT) is one of the most widely used 3D diagnostic imaging tools in medicine. The traditional method of teaching the principles of CT involves classroom lectures, followed by demonstrations on a clinical system, generally inaccessible for educational purposes. The x-ray hazard and 'black-box' nature of clinical scanners severely limits hands-on experimentation. A scaled-down portable CT imaging system has been developed as a commercial product (DeskCATTM) specifically for interactive teaching in a classroom or laboratory setting. The system is portable and uses light rays in lieu of x-rays thus sidestepping radiation protection issues while making the physics much more intuitive. The learning package includes 20 hours of ready-to-go written lab modules which have been implemented and tested at the university level in Physics, Biophysics, and Biomedical Engineering Departments, as well as in Medical Schools with residency training programs in Medical Imaging.

During this workshop, the basic steps of computed tomography will be demonstrated. We will show how images are acquired and reconstructed into a 3D model of the object being scanned. This includes the "live" projection of radiographic views, acquisition of projection images, interpretation of sinogram raw data, CT reconstruction using Feldkamp filtered back projection plus the display of 2D and 3D images using common techniques including multi-planar reformatting and several volume rendering techniques.  This session is intended to be fully interactive with opportunity for on-demand questions and active participation.  At the end of the session, attendees will understand how a full-scale x-ray CT scanner really works.

There are 9 quantitative labs plus Lab 0 which is a qualitative lab suitable for use as an introductory student lab or for classroom demonstration by an instructor.  With this comprehensive interactive approach students quickly progress from understanding the physics of simple projection radiographs through the quantitative understanding of CT performance parameters to the physics of dual energy CT and emission CT.

Labs (Students require 2 hours of laboratory time to complete each lab):
0) Introduction to DeskCATTM (suitable for classroom demonstration or lab study)
1) Introduction to Medical Imaging – 3D Localization
2) System Linearity
3) Spatial Resolution and Modulation Transfer Function
4) Edge Response, Point Spread Function and MTF
5) Contrast to Noise Ratio
6) Image Artifacts due to Faulty Detectors and Missing Projections
7) Fan Beam vs Cone Beam
8) Dual energy CT
9) Emission CT"
Abstract Type: Workshop

Author/Organizer Information

Primary Contact: John Miller
Modus Medical Devices Inc.