Mudabbir Tufail Bhatti, PhD

Name: Mudabbir Tufail Bhatti
Project Title: Coded Ultrasound Imaging
Group: Center for Fast Ultrasound Imaging
Supervisors: Jørgen Arendt Jensen

Project Description: 

Coded excitation signals are a great way to improve the penetration depth of an ultrasound system. It increases the signal's energy by increasing its duration to achieve greater penetration depths.

Perspective:

Coded excitation imaging has so far been limited due to the probe's heating. A longer excitation signal means that the transmitters are powered for a longer duration, resulting in more heat generation and less time for cooling. The other safety limits, such as the amount of energy transferred into the body and the peak pressure of the sound wave, are way below the limits. Hence, the probe's heating is the primary concern when using coded excitations. A relatively new ultrasound transducer technology known as CMUT ( capacitive Micromachined Ultrasonic Transducers) has shown promise in reducing probe heating. A study was performed in our department comparing a commercial piezoelectric probe with an in-house-built CMUT probe, and the results were fascinating. The CMUT probe emits the same signal as the commercial piezoelectric probe while reducing the generated heat by a factor of 10. This means that if the trend is consistent for all the CMUT probes, a significant increase in penetration depth is possible without violating any safety limits. This could be great news for researchers working in ultrasound imaging, especially those working on the CMUT technology.

About Mudabbir:

Mudabbir received an M.Sc. degree in biomedical engineering from the Aachen University of Applied Sciences, Aachen, Germany, in 2019. He is currently pursuing a Ph.D. degree with the Center for Fast Ultrasound Imaging, Department of Health Technology, Technical University of Denmark. His research interests include signal processing ultrasound imaging.”