© 2020 Rikki Nezich, Medical Physics Perth

CT Quality Inspector (CTQI) software

Computed Tomography Quality Inspector (CTQI) is a program that measures several parameters of CT scanner performance by the automatic analysis of Catphan 500 phantom images. CTQI has applications in CT scanner quality assurance, scan protocol optimisation, and imaging research.

Capabilities

CTQI is capable of analysing images from the Catphan 500 phantom to evaluate and assess the following parameters:

  • Uniformity, Mean CT Number, Noise

  • CT Number Linearity

  • Geometric Accuracy

  • Slice Thickness

  • Slice/Table Incrementation

  • High Contrast Resolution

Development

CTQI is currently under development by the Department of Medical Technology & Physics, Sir Charles Gairdner Hospital, Western Australia. Please report any bugs, errors, suggestions or feature requests using the form below.

 

Download the latest beta version on the download page here.

Getting started

Note: The program may take up to 1 minute to start the first time it is launched.

  1. On the DICOM library page, load DICOM images or a directory of DICOM images using the 'Load Files...' button or with the 'File' dropdown menu.

  2. Move relevant test images into the lists on the right hand side of the page by using the '+' and '-' buttons or with the right mouse button. These lists correspond to the different modules of the Catphan and contain the relevant images that will be analysed. Images of a generic water phantom can also be used in the 'Uniformity, Mean CT Number, Noise' list.

  3. Select a test by pressing the 'Analyses...' button or with the 'Analyses' drop down menu.

Conditions of Use

By downloading this software you acknowledge that CTQI has not been validated for clinical use and the developers accept no responsibility or liability for the accuracy of results obtained with the program.

Copyright (c) 2019, Medical Technology & Physics, Sir Charles Gairdner Hospital, All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution * Neither the name of Department of Medical Technology & Physics, Sir Charles Gairdner Hospital nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Feedback

CTQI is under development and we value your feedback. Please report any bugs, errors, suggestions or feature requests using the contact form.