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Lab 0: Introduction to DeskCAT™

In this lab exercise, students gain an understanding of fundamental concepts in Computed Tomography (CT). Students (or the demonstrator) scan a simple 3D object (i.e. a mouse phantom) to become familiar with data capture, image reconstruction and 3D image display. Interactive tools in the user interface allow students to view the reconstruction of CT images in real time. This exercise introduces students to the physics of CT scanners in general and more specifically to the operation of the DeskCAT™ scanner. In addition, it allows exploration of images using visualization tools that are similar to those used in medical CT scanners.

Labs 0-3 are included with the purchase of the DeskCAT Optical CT Scanner

Lab 1: Introduction to Medical Imaging – 3D Localization

Lab 1: Introduction to Medical Imaging – 3D Localization

In this lab exercise, students explore the geometry of medical imaging. Students make geometric measurements of the 3D position of fiducial markers embedded in a cylindrical phantom and gain experience with measurement, manipulation and display of 3D images. Measurements are made on 2 orthogonal radiographic projections, as well as on a 3D CT image. Students compare and contrast the two imaging modalities with calculations of coordinates using each method.

Lab 2: System Linearity

Lab 2: System Linearity

In this lab exercise, students learn how to measure the linearity of response of a CT scanner. Students evaluate the linearity of the DeskCAT™ scanner by acquiring a series of scans with increasing optical attenuation. Optical attenuation is adjusted by adding known amounts of black dye to a water filled jar. The linearity of the scanner is evaluated by plotting the measured attenuation coefficient against the concentration of dye.

Lab 3: Spatial Resolution and Modulation Transfer Function (MTF)

Lab 3: Spatial Resolution and Modulation Transfer Function (MTF)

In this lab exercise, students assess the spatial resolution of projection and 3D CT images using the DeskCAT™ scanner. Students acquire 2D and 3D images of a bar pattern phantom. The shape of the MTF is determined by plotting the contrast of the line pairs (modulation) vs. spatial frequency. This exercise introduces students to the concept of MTF, its practical implications and a commonly used method of measuring it.

RELATED PRODUCTS

DeskCAT™ Optical CT Scanner for Education
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DeskCAT™ Optical CT Scanner for Education

Is a state-of-the-art multi-slice optical CT scanner designed for educators requiring a safe and hands-on approach to teaching medical imaging in a classroom or laboratory setting.

Intermediate Lab Exercises
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Intermediate Lab Exercises

Available to purchase are 3 intermediate level lab exercises are for Commission on Accreditation of Medical Physics Educational Programs (CAMPEP).

Advanced  Lab Exercises
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Advanced Lab Exercises

For advanced level students, we offer 3 lab exercises to meet requirements set forth by the CAMPEP accredited programs in Medical Biophysics.

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