defaultalt Technical University of Denmark
CT image of lungs and heart 31655 Medical Imaging Systems
    Main page
DTU Teaching Center for Fast
Ultrasound Imaging
Field II JAJ


Menu Line

Teams 2022

Menu Line

Course material

Menu Line
Menu Line


Menu Line

Ultrasound Data

Menu Line
CT Data
Menu Line
   Circle phantom
   Assignment data
Menu Line


Menu Line


Menu Line


Menu Line
Learning objectives
Menu Line
Menu Line

About this site

Menu Line

The Shepp-Logan phantom

The development of reconstruction algorithms is greatly eased by using standard phantoms with know properties. A well known example is the Shepp-Logan phantom containing ellipsis with different absorption properties, that resembles the outline of a head. An image of the phantom is shown below (click on the image to see the full version).

Shepp-Logan phantom

A Matlab function has been made, that can generate projection data for this phantom. The file shepp_logan.m can be found at the ftp-server in the directory:

It is possible to generate images of different sizes and vary the number of projections generated. Instruction are found by writing help shepp_logan at the Matlab prompt.

The ideal Shepp-Logan phantom image can be generated using the command shepp_logan_image.m. Instruction are found by writing help shepp_logan_image at the Matlab prompt. An ideal Shepp-Logan phantom image can also be found at (Note: 2 Mbyte file):

Last updated: 8:32 on Thu, 22-Oct-2020