Temperature measurement using backscattered ultrasonic power for non-invasive thermometry during HIFU ablation

AbstractAccurate and responsive non-invasive temperature measurements are enablers for process monitoring and plant optimization use cases in the context of Industry 4.0. If their performance is proven for large classes of applications, such measurement principles can replace traditional invasive measurements. In this paper we describe a two-step model to estimate the process temperature from a pipe surface temperature measurement. This static case model is compared to and enhanced by computational fluid dynamic (CFD) calculations to predict transient situations. The predictions of the approach are validated by means of controlled experiments in a laboratory environment. The experimental results demonstrate the efficacy of the model, the responsiveness of the pipe surface temperature, and that state of the art industrial non-invasive sensors can achieve the performance of invasive thermowells. The non-invasive sensors are then used to demonstrate the performance of the model in industrial applications for cooling fluids and steam.

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Emergency Nursing Resource: Non-Invasive Temperature Measurement in the Emergency Department

Journal of Emergency Nursing ◽

10.1016/j.jen.2012.05.012 ◽

2012 ◽

Vol 38 (6) ◽

pp. 523-530 ◽

Cited By ~ 14

Author(s):

Susan Barnason ◽

Jennifer Williams ◽

Jean Proehl ◽

Carla Brim ◽

Melanie Crowley ◽

...

Keyword(s):

Emergency Department ◽

Temperature Measurement ◽

Emergency Nursing ◽

Non Invasive

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Peter Neil Temple Wells CBE. 19 May 1936—22 April 2017

Biographical Memoirs of Fellows of the Royal Society ◽

10.1098/rsbm.2018.0022 ◽

2019 ◽

Vol 66 ◽

pp. 463-477

Author(s):

Hywel R. Thomas

Keyword(s):

Imaging Techniques ◽

Water Immersion ◽

Malignant Tumour ◽

General Purpose ◽

Power Measurement ◽

Ultrasonic Power ◽

Non Invasive ◽

Surgical Tool ◽

The 1960S ◽

Safety Guidelines

Peter Wells will be remembered internationally for his many outstanding contributions in the field of medical ultrasound. He pioneered the development of non-invasive imaging techniques in the development of ultrasonics as a diagnostic and surgical tool. He was the originator and developer of instruments for ultrasonic surgery and ultrasonic power measurement, as well as the two-dimensional, articulated-arm ultrasonic general purpose scanner and the water-immersion ultrasonic breast scanner. He demonstrated ultrasonic-pulsed Doppler range-gating, and was the discoverer of the ultrasonic Doppler signal characteristic of malignant tumour neovascularization. He investigated ultrasonic bioeffects and formulated ultrasonic safety guidelines and conditions for prudent use of ultrasonic diagnosis. His outstanding and sustained achievements in the medical applications of ultrasound extend continuously from the 1960s until a few days before his death at the age of 80. Anyone who has ever benefited from an ultrasound procedure owes a debt of gratitude to Peter Wells.

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