Adaptive time-gain compensation method for use in ophthalmic ultrasonic measurement equipment

A technology of ultrasonic measurement and gain compensation, which is applied in the direction of eye testing equipment and eye examination, etc. It can solve the problems of increasing measurement error, amplitude difference of interface reflected wave, overcompensation, etc., so as to reduce delay time difference, improve measurement accuracy, The effect of accurate data
CN101999910AInactive Publication Date: 2011-04-06天津迈达医学科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
天津迈达医学科技股份有限公司
Publication Date
2011-04-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an adaptive time-gain compensation method for use in ophthalmic ultrasonic measurement equipment, which comprises: establishing standard time-gain compensation curves of the anterior chamber, lens and vitreous body which are required to be measured in axis oculi length measurement, and storing the standard time-gain compensation curves in a time gain control (TGC) storage; inputting patient information through a man-machine interaction interface in A-type ultrasonic measurement equipment according to clinic examination; performing pre-measurement; allowing the TGC storage to perform adaptive TGC curve fitting automatically according to acquired data to complete the time-gain compensation curves in accordance of the conditions of an individual receiving the examination; and performing official measurement: after the pre-measurement is accomplished, automatically starting to performing the official measurement by using the time-gain compensation curves adaptive to the specific conditions of the person receiving the examination upon the completion of the fitting of the adaptive TGC curves, obtaining the data on the length of the anterior chamber (AC), the thickness of the lens (LEN) and the length of the vitreous body (VITR) and displaying data. The method improves the measurement accuracy of the length (AL) of the axis oculi and provides more accurate data for diagnosis and artificial lens implantation.
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Description

technical field

[0001] The invention relates to an ultrasonic measurement technology of the A-type eye axis length in ophthalmology. In particular, it relates to an adaptive time-gain compensation method applied in an ophthalmic ultrasonic measurement device capable of improving the measurement accuracy of the axial length of the eye. Background technique

[0002] At present, the technology commonly used in medical ultrasonic diagnosis and measurement equipment is the "pulse-echo" detection method, that is, the ultrasonic transducer radiates ultrasonic waves into the human body under the excitation of electric pulses, and then receives the reflected waves of human tissue and converts them into electrical signals for display. , forming a "sonogram". Because different human tissues have different reflection characteristics of ultrasonic waves, and there are differences in the reflected waves between normal tissues and diseased tissues, doctors can provide a basis for clinical...

Claims

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