Imaging method of structure defect, imaging device of structure defect, imaging method of bubble or lesion and imaging device of bubble or lesion

Scattered waves from the defect of burst ultrasonic waves radiated from an ultrasonic transmitter to a structure in two different arrangements of the ultrasonic transmitter and an array receiver are received by the array receiver so as to obtain a reception signal. The reception signal is subjected...

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Bibliographische Detailangaben
Hauptverfasser:	YAMANAKA KAZUSHI, OHARA YOSHIKAZU, SHINTAKU YOHEI
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CALCULATING COMPUTING COUNTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES DIAGNOSIS HANDLING RECORD CARRIERS HUMAN NECESSITIES HYGIENE IDENTIFICATION INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEDICAL OR VETERINARY SCIENCE PHYSICS PRESENTATION OF DATA RADIO DIRECTION-FINDING RADIO NAVIGATION RECOGNITION OF DATA RECORD CARRIERS SURGERY TESTING
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Beschreibung
Zusammenfassung:	Scattered waves from the defect of burst ultrasonic waves radiated from an ultrasonic transmitter to a structure in two different arrangements of the ultrasonic transmitter and an array receiver are received by the array receiver so as to obtain a reception signal. The reception signal is subjected to a band-pass filter that passes a specific frequency component, shifted by different time according to the position of each reception sensor element of the array receiver and then, added so as to obtain a processing signal. On the basis of the processing signal, an image of the defect is obtained, respectively. A common portion of the obtained two images is extracted.