A kind of ultrasonic probe calibration method

Abstract

An ultrasound probe configuration method, comprising: a dead zone of an ultrasound probe at a preset detecting depth is obtained (S11); the ultrasound probe is placed in a three-dimensional magnetic field, and a first image obtained when the ultrasound probe scans air and a second image obtained when an acoustic lens of the ultrasound probe is in contact with a top end of a free transducer coated in a couplant are acquired (S12); on the basis of color difference ratios, a first region and a second region having the longest continuous color differences on corresponding arcs are respectively selected, and median coordinates of the first region and the second region are calculated (S15); on the basis of the median coordinates of the first region and the second region and the dead zone, two-dimensional coordinates of the top end of the free transducer in the second image are calculated and converted to three-dimensional coordinates to be measured, and on the basis of the three-dimensional coordinates to be measured and actual three-dimensional coordinates of the free transducer receiving the magnetic field, a ternary equation system is established, and a correction value for the ultrasound probe in the magnetic field is calculated. By means of the present method, measurement error is effectively reduced, and three-dimensional localization accuracy is improved.

Description

technical field [0001] The invention relates to the field of ultrasonic technology, in particular to an ultrasonic probe calibration method. Background technique [0002] At present, ultrasonic diagnosis is an image diagnostic technology that uses ultrasonic waves to detect human tissue. It has the advantages of high resolution, good real-time performance, safety and non-invasiveness, and has been widely used in clinical image diagnosis. Ultrasound imaging has gradually become an important medical diagnostic technology. Ultrasound data of human tissues and organs are obtained through probes, and these data are processed to obtain more realistic three-dimensional ultrasound images of tissues and organs. Three-dimensional ultrasound has intuitive display and multi-angle observation. And other new features, superior to the traditional two-dimensional ultrasound, has important application value. [0003] Three-dimensional ultrasound imaging is obtained by three-dimensional reco...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method for calibrating an ultrasonic probe to solve the technical problem of relatively large calibration errors of the existing ultrasonic probe. This method can effectively reduce the measurement error, thereby helping to improve the three-dimensional positioning accuracy

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