Automates and Organises Quality Assurance in Radiation Therapy and Medical Imaging
MOD CTP
QUALIMAGIQ module for automatic analysis of quality control of the image of a low-energy (kV) portal imager used for IGRT in tomographic mode (CBCT)
Connected to the QUALIMAGIQ platform, it takes the CTP module only 2 mouse clicks to analyse all of the dicom tomographic slices originating from the image quality controls of the on-board imager of an IGRT device used in CBCT mode.
These automated analyses cover:
- Sensitometry ;
- Slice thickness and sensitivity profile;
- Pixel size;
- Geometric distortions;
- Low level contrast;
- Spatial resolution (Droege & Morin and PSF methods);
- Noise power spectrum;
- Noise;
- Signal uniformity and homogeneity.
Specifications
Less than 10 minutes is all the time you need to perform the entire control: installation of the test object, image acquisition and analysis, editing of 6 different PDF analysis reports and a trend curve for each tested parameter.
This module enables you to totally fulfil all requirements of the French National Agency for the Safety of Medicines (ANSM) decision dated 28/02/23 regulating the procedures for quality control of external radiation therapy and radiosurgery devices: points 4C.1.1, 4C.1.2, 4C.1.3, 4C.1.4, 4C.1.5, 4C.1.6, and 8.1 of the annex.
Associated test objects:
- Either CATPHAN 500, 503, 504, 600, 604 or 700 from Phantom Laboratory.
Related products
Resources
You need a user manual? please contact us.
FAQ
IS IT ESSENTIAL TO ALIGN PERFECTLY THE CATPHAN PHANTOM IN THE CT-SCANNER BEFORE TO MAKE ACQUISITION?
No for 2 reasons:
1- QUALIMAGIQ detects automatically phantom edges and its orientation before to extract the signal in the different inserts. Therefore QUALIMAGIQ compensates an eventual transversal (Up/Dowm and Left/right) misalignment.
2- The longitudinal alignment of the phantom is also not essential because with one click in the QUALIMAGIQ welcome screen you can redefine the 0 slice location of the complete set of images.
In the CATPHAN phantom, there is two methods to measure the spatial resolution of the CT-scanner. Which is the best method and which method QUALIMAGIQ supports?
Yes CATPHAN offers you to test the spatial resolution with a bar pattern phantom containing 21 different frequencies. Initialy the method was a visual method but DROEGE & MORIN have proposed to quantify the MTF by measuring the standard deviation in each bar pattern. This method is only an approach of the MTF and she is not really accurate for low frequencies.
You have also the possibility to evaluate the MTF directly by calculating the the Fourier transform of the Point Spread Function simulated by a 0.25 mm diameter aluminium ball. This method is also not perfect because she is sensitive to the noise and the MTF estimated with this method is limited by Nyquist frequency.
Nevertheless QUALIMAGIQ supports the two methods.
Your brochure request has been added to your Download Cart.
At the end of your visit:
- Please click the "YOUR DOWNLOADS" button at the top right,
- Complete the form and SEND it.
You will get the documents shortly by email.