High-speed laser photoacoustic imaging system combined with a digital ultrasonic imaging platform

Background: This study is carried out targeting the problem of slow response time and performance degradation of imaging system caused by large data of medical ultrasonic imaging. In view of the advantages of CS, it is applied to medical ultrasonic imaging to solve the above problems. Objective: Under the condition of satisfying the speed of ultrasound imaging, the quality of imaging can be further improved to provide the basis for accurate medical diagnosis. Methods: According to CS theory and the characteristics of the array ultrasonic imaging system, block compressed sensing ultrasonic imaging algorithm is proposed based on wavelet sparse representation. Results: Three kinds of observation matrices have been designed on the basis of the proposed algorithm, which can be selected to reduce the number of the linear array channels and the complexity of the ultrasonic imaging system to some extent. Conclusion: The corresponding simulation program is designed, and the result shows that this algorithm can greatly reduce the total data amount required by imaging and the number of data channels required for linear array transducer to receive data. The imaging effect has been greatly improved compared with that of the spatial frequency domain sparse algorithm.

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High speed coherent continuous wave terahertz imaging system based on photomixing

2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves ◽

10.1109/irmmw-thz.2012.6380133 ◽

2012 ◽

Cited By ~ 1

Author(s):

Dennis Stanze ◽

Thorsten Gobel ◽

Born Globisch ◽

Roman J.B. Dietz ◽

Bernd Sartorius ◽

...

Keyword(s):

High Speed ◽

Continuous Wave ◽

Imaging System ◽

Terahertz Imaging

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Ultrasonic imaging system based on two-dimensional array of ultra-wavelength transducers

2012 IEEE International Ultrasonics Symposium ◽

10.1109/ultsym.2012.0612 ◽

2012 ◽

Author(s):

S. A. Titov ◽

R. Gr. Maev ◽

A. N. Bogachenkov

Keyword(s):

Imaging System ◽

Ultrasonic Imaging ◽

Two Dimensional ◽

Dimensional Array

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Betadine has a ciliotoxic effect on ciliated human respiratory cells

The Journal of Laryngology & Otology ◽

10.1017/s0022215114002746 ◽

2014 ◽

Vol 129 (S1) ◽

pp. S45-S50 ◽

Cited By ~ 20

Author(s):

J H Kim ◽

J Rimmer ◽

N Mrad ◽

S Ahmadzada ◽

R J Harvey

Keyword(s):

Epithelial Cells ◽

High Speed ◽

Imaging System ◽

Beat Frequency ◽

Ciliary Beat Frequency ◽

Positive Control ◽

Clinical Dose ◽

Significant Difference ◽

Sinonasal Mucosa ◽

Ciliary Beat

AbstractObjective:This study investigated the effect of Betadine on ciliated human respiratory epithelial cells.Methods:Epithelial cells from human sinonasal mucosa were cultured at the air–liquid interface. The cultures were tested with Hanks' balanced salt solution containing 10 mM HEPES (control), 100 µM ATP (positive control), 5 per cent Betadine or 10 per cent Betadine (clinical dose). Ciliary beat frequency was analysed using a high-speed camera on a computer imaging system.Results:Undiluted 10 per cent Betadine (n = 6) decreased the proportion of actively beating cilia over 1 minute (p < 0.01). Ciliary beat frequency decreased from 11.15 ± 4.64 Hz to no detectable activity. The result was similar with 5 per cent Betadine (n = 7), with no significant difference compared with the 10 per cent solution findings.Conclusion:Betadine, at either 5 and 10 per cent, was ciliotoxic. Caution should be applied to the use of topical Betadine solution on the respiratory mucosal surface.

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