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Quantitative estimation of ultrasound beam intensities using infrared thermography—Experimental validation
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10.1121/1.4711006
/content/asa/journal/jasa/131/6/10.1121/1.4711006
http://aip.metastore.ingenta.com/content/asa/journal/jasa/131/6/10.1121/1.4711006

Figures

Image of FIG. 1.
FIG. 1.

Geometry for characterization of HIFU transducer using temperature measurements acquired by infrared camera.

Image of FIG. 2.
FIG. 2.

Experimental apparatus used to perform sonication and IR temperature measurement procedures.

Image of FIG. 3.
FIG. 3.

(a) Intensity as a function of radial coordinate in the focal plane for transducer T_30, determined from the IR technique and hydrophone measurements. Uncertainties for hydrophone measurements are not shown but are provided in Tables I and II. (b) Intensity as a function of radial coordinate in a pre-focal plane for transducer T_30, determined from the IR technique and hydrophone measurements. Uncertainties for hydrophone measurements are not shown but are provided in Tables I and II. (c) Intensity as a function of radial coordinate in a post-focal plane for transducer T_30, determined from the IR technique and hydrophone measurements. Uncertainties for hydrophone measurements are not shown but are provided in Tables I and II.

Image of FIG. 4.
FIG. 4.

(a) Intensity as a function of radial coordinate in the focal plane for transducer T_60, determined from the IR technique and hydrophone measurements. Uncertainties for hydrophone measurements are not shown but are provided in Tables III and IV. (b) Intensity as a function of radial coordinate in a pre-focal plane for transducer T_60, determined from the IR technique and hydrophone measurements. Uncertainties for hydrophone measurements are not shown but are provided in Tables III and IV. (c) Intensity as a function of radial coordinate in a post-focal plane for transducer T_60, determined from the IR technique and hydrophone measurements. Uncertainties for hydrophone measurements are not shown but are provided in Tables III and IV.

Tables

Generic image for table
TABLE I.

On-axis intensities for transducer T_30, at focal, pre-focal, and post-focal locations, for all powers used. Intensities were determined from both the IR method and hydrophone measurements. For the IR technique, uncertainties represent the standard deviation for 9 separate measurements. For the hydrophone measurements, uncertainties represent the standard deviation for 3 separate measurements.

Generic image for table
TABLE II.

Beam widths for transducer T_30, at focal, pre-focal, and post-focal locations, for all powers used. Beam widths were determined from both the IR method and hydrophone measurements. For the IR technique, uncertainties represent the standard deviation for 36 separate measurements: 4 different directions (+x, −x, +y, −y) for 9 trials. For the hydrophone measurements, uncertainties represent the standard deviation for the 4 different directions on a single trial.

Generic image for table
TABLE III.

On-axis intensities for transducer T_60, at focal, pre-focal, and post-focal locations, for all powers used. Intensities were determined from both the IR method and hydrophone measurements. For the IR technique, uncertainties represent the standard deviation for 9 separate measurements. For the hydrophone measurements, uncertainties represent the standard deviation for 3 separate measurements.

Generic image for table
TABLE IV.

Beam widths for transducer T_60, at focal, pre-focal, and post-focal locations, for all powers used. Beam widths were determined from both the IR method and hydrophone measurements. For the IR technique, uncertainties represent the standard deviation for 36 separate measurements: 4 different directions (+x, −x, +y, −y) for 9 trials. For the hydrophone measurements, uncertainties represent the standard deviation for the 4 different directions on a single trial.

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/content/asa/journal/jasa/131/6/10.1121/1.4711006
2012-06-14
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quantitative estimation of ultrasound beam intensities using infrared thermography—Experimental validation
http://aip.metastore.ingenta.com/content/asa/journal/jasa/131/6/10.1121/1.4711006
10.1121/1.4711006
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