JPS648955A - Ultrasonic endoscopic apparatus - Google Patents

Ultrasonic endoscopic apparatus

Info

Publication number
JPS648955A
JPS648955A JP62204453A JP20445387A JPS648955A JP S648955 A JPS648955 A JP S648955A JP 62204453 A JP62204453 A JP 62204453A JP 20445387 A JP20445387 A JP 20445387A JP S648955 A JPS648955 A JP S648955A
Authority
JP
Japan
Prior art keywords
frequency
signal
receiving
echo
transducer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62204453A
Other languages
Japanese (ja)
Inventor
Tatsuo Nagasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP62204453A priority Critical patent/JPS648955A/en
Publication of JPS648955A publication Critical patent/JPS648955A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

PURPOSE:To enhance diagnostic capacity, by applying frequency conversion to the receiving echo signal reflected from an object to be examined on the basis of an oscillation signal having predetermined frequency and covering the converted frequency band of the receiving echo signal with the frequency band possessed by the amplifier in a display apparatus. CONSTITUTION:An exciting pulse is generated from a transmission unit 20 by the transmission control signal from a display apparatus 50 and a transducer 10 vibrates at predetermined high frequency to emit an ultrasonic wave to an object to be examined. The ultrasonic wave is reflected from the object to be examined to become an ultrasonic echo which is, in turn, converted to an echo receiving signal by the transducer 10 to be supplied to the mixer 44 of a receiving unit 40. The oscillation frequency of the local oscillator 42 connected to said mixer 44 is set to (f0+f0') on the basis of the correlation between the center frequency f0 of the transducer 10 and the center frequency f0' of the band 52 of the amplifier in a display apparatus. Therefore, the local oscillation signal is mixed with the receiving signal to perform frequency heterodyne conversion (f0-f0')-f0=f0'.
JP62204453A 1986-10-16 1987-08-18 Ultrasonic endoscopic apparatus Pending JPS648955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62204453A JPS648955A (en) 1986-10-16 1987-08-18 Ultrasonic endoscopic apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24577886 1986-10-16
JP62204453A JPS648955A (en) 1986-10-16 1987-08-18 Ultrasonic endoscopic apparatus

Publications (1)

Publication Number Publication Date
JPS648955A true JPS648955A (en) 1989-01-12

Family

ID=26514477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62204453A Pending JPS648955A (en) 1986-10-16 1987-08-18 Ultrasonic endoscopic apparatus

Country Status (1)

Country Link
JP (1) JPS648955A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0475507U (en) * 1990-11-13 1992-07-01
US10894261B2 (en) 2015-12-02 2021-01-19 Kiwa Machinery Co., Ltd. Washing nozzle for machine tool and machine tool therein
JP2021113726A (en) * 2020-01-17 2021-08-05 Ｊｆｅスチール株式会社 Diagnosis method and device of rotary bearing
KR20230059454A (en) * 2021-10-26 2023-05-03 이화여자대학교 산학협력단 Deep learning based vascular invasion classification method for pancreatic cancer using endoscopic ultrasound image and analysis apparatus
JPWO2024143112A1 (en) * 2022-12-28 2024-07-04

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0475507U (en) * 1990-11-13 1992-07-01
US10894261B2 (en) 2015-12-02 2021-01-19 Kiwa Machinery Co., Ltd. Washing nozzle for machine tool and machine tool therein
JP2021113726A (en) * 2020-01-17 2021-08-05 Ｊｆｅスチール株式会社 Diagnosis method and device of rotary bearing
KR20230059454A (en) * 2021-10-26 2023-05-03 이화여자대학교 산학협력단 Deep learning based vascular invasion classification method for pancreatic cancer using endoscopic ultrasound image and analysis apparatus
JPWO2024143112A1 (en) * 2022-12-28 2024-07-04
WO2024143112A1 (en) * 2022-12-28 2024-07-04 日本電気株式会社 Correction model generation device, simulated waveform generation device, correction model generation method, and recording medium

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