Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Reexamination Certificate
2011-07-26
2011-07-26
Le, Long V (Department: 3768)
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
C600S458000
Reexamination Certificate
active
07985183
ABSTRACT:
The difference frequency component between a first fundamental wave of frequencyfand a second fundamental wave of frequency f2is caused to interact with a second harmonic wave, thereby to attain the enhancement of a second harmonic signal, etc., whereby a reflected wave component to be imaged is extracted at a high S/N ratio. By way of example, in a case where the difference frequency component is to appear on the lower frequency side of the second harmonic wave of the first fundamental wave so as to be superposed on this second harmonic wave, the frequencies are set at f2=2.8f or so. Besides, in a case where the difference frequency component is to appear on the higher frequency side of the second harmonic wave of the first fundamental wave so as to be superposed on this second harmonic wave, the frequencies are set at f2=3.2f or so.
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Imamura Tomohisa
Kamiyama Naohisa
Kawagishi Tetsuya
Evoy Nicholas L
Kabushiki Kaisha Toshiba
Le Long V
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Toshiba Medical Systems Corporation
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