Ultrasonograph PSF meter
The ultrasound scanners manufactured or refurbished must be checked for imaging quality before their expedition to customers. A measurement system to evaluate a comprehensive group of qualitative parameters with high objectivity and accuracy for the whole imaging system quality assessment is needed.
The Point Spread Function (PSF) tester is based on imaging a spherical high reflective target of specified diameter by an evaluated scanner. The scanning is performed in a tank filled with water. The target position in the scanned plane is computer controlled during the scanning. The PSF tester analyses an output video – signal (composite PAL, DVDI-D, HDMI or VGA) of the scanner – the sonogram for nine different qualitative parameters of the picture.
Prototype. Studies on reproducibility and validation in practice have been successfully completed.
The PSF tester accesses complete imaging system from transducer to the imaging display. The system is computer assisted, independent of the type of the scanner measured. All the types of transducers can be evaluated including the matrix one. An input of the tester allows measurements of any scanner system commercially available. The tester measures and numerically expresses 9 important qualitative parameters with good reproducibility in any specified region of the imaged area by singlemeasurement process. The parameters are: received signal amplitude uniformity, lateral resolution, transverse resolution, axial resolution, transverse scan slice profile of the scanned plane, number and position of the foci of the dynamic focussing in the both lateral and transverse planes, ultrasound scan line density and distribution in the scan plane, Time Gain Compensation profile in the scan plane and sonogram geometric accuracy.
Exclusive/non-exclusive license to the know-how and data.
Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Faculty of Science, Palacky University, Olomouc
More information is available upon signing a CDA/NDA. Please contact IMTM´s director (email@example.com) or the technology transfer office (firstname.lastname@example.org).