Results 251 to 260 of about 173,652 (295)
Some of the next articles are maybe not open access.
The Journal of the Acoustical Society of America, 2011
An ultrasonic image boundary extracting apparatus capable of accurately extracting outlines of tissues based on reception signals respectively output from ultrasonic transducers by receiving ultrasonic echoes. The ultrasonic image boundary extracting apparatus includes: an analysis unit for obtaining an interrelationship among plural reception signals ...
openaire +1 more source
An ultrasonic image boundary extracting apparatus capable of accurately extracting outlines of tissues based on reception signals respectively output from ultrasonic transducers by receiving ultrasonic echoes. The ultrasonic image boundary extracting apparatus includes: an analysis unit for obtaining an interrelationship among plural reception signals ...
openaire +1 more source
The Journal of the Acoustical Society of America, 2006
In order to capture an ultrasonic image of high quality using ultrasound having a low sound pressure that does not break a contrast agent, scanning is performed during a pause period of intermittent scanning, using ultrasound that has a sound pressure insufficient to break the contrast agent and has undergone predetermined modulation; pulse compression
openaire +1 more source
In order to capture an ultrasonic image of high quality using ultrasound having a low sound pressure that does not break a contrast agent, scanning is performed during a pause period of intermittent scanning, using ultrasound that has a sound pressure insufficient to break the contrast agent and has undergone predetermined modulation; pulse compression
openaire +1 more source
Ultrasonic image generating apparatus and ultrasonic image generating method
The Journal of the Acoustical Society of America, 2004The ultrasonic image generating system has an ultrasonic beam output device which outputs a beam to a predetermined subject area, a receiving device which receives the reflected wave from the area, an image generating device which generates an image from the reflected wave and a beam output direction controller which performs control of changing the ...
openaire +1 more source
The Journal of the Acoustical Society of America, 1981
A portable ultrasonic scanning module is disclosed which includes a fluid-tight enclosure having a window at about the front thereof and a reflective scanner at about the rear thereof and generally facing the window. A transducer is mounted in the enclosure frontwardly of the reflective scanner with the ultrasound-emitting face of the transducer ...
openaire +1 more source
A portable ultrasonic scanning module is disclosed which includes a fluid-tight enclosure having a window at about the front thereof and a reflective scanner at about the rear thereof and generally facing the window. A transducer is mounted in the enclosure frontwardly of the reflective scanner with the ultrasound-emitting face of the transducer ...
openaire +1 more source
The Journal of the Acoustical Society of America, 2011
Disclosed are a system and method of selecting one or more operational parameters of an ultrasonic imaging system. In particular, methods and means are disclosed for automatically or semi-automatically determining a best operating frequency, or for determining whether a system should operate in a fundamental imaging mode or a harmonic imaging mode.
openaire +1 more source
Disclosed are a system and method of selecting one or more operational parameters of an ultrasonic imaging system. In particular, methods and means are disclosed for automatically or semi-automatically determining a best operating frequency, or for determining whether a system should operate in a fundamental imaging mode or a harmonic imaging mode.
openaire +1 more source
The Journal of the Acoustical Society of America, 1989
An ultrasonic imaging device includes an ultrasonic probe with a plurality of vibrators arranged linearly for transmitting ultrasonic beams to an object and receiving the reflected ultrasonic beams from the object. A driving unit is constructed to control the plurality of vibrators using a time control which employs delay lines to transmit ultrasonic ...
openaire +1 more source
An ultrasonic imaging device includes an ultrasonic probe with a plurality of vibrators arranged linearly for transmitting ultrasonic beams to an object and receiving the reflected ultrasonic beams from the object. A driving unit is constructed to control the plurality of vibrators using a time control which employs delay lines to transmit ultrasonic ...
openaire +1 more source
The Journal of the Acoustical Society of America, 1989
Ultrasonic imaging apparatus including ultrasonic transducers for emitting acoustic wave beams of various apertures, apparatus for directing two acoustic wave beams of substantially different focusing distances on the same beam direction, circuitry for receiving the reflected waves corresponding to the beam directions, apparatus for modulating the ...
openaire +1 more source
Ultrasonic imaging apparatus including ultrasonic transducers for emitting acoustic wave beams of various apertures, apparatus for directing two acoustic wave beams of substantially different focusing distances on the same beam direction, circuitry for receiving the reflected waves corresponding to the beam directions, apparatus for modulating the ...
openaire +1 more source
The Journal of the Acoustical Society of America, 1994
A phased array sector scanning ultrasonic imaging system produces simultaneously, and samples, three receive beams for each transmitted ultrasonic pulse directed upon flowing reflectors. Flow velocity is measured in the cross range direction using a correlation technique while flow velocity in the range direction is simultaneously measured using a ...
openaire +1 more source
A phased array sector scanning ultrasonic imaging system produces simultaneously, and samples, three receive beams for each transmitted ultrasonic pulse directed upon flowing reflectors. Flow velocity is measured in the cross range direction using a correlation technique while flow velocity in the range direction is simultaneously measured using a ...
openaire +1 more source
The Journal of the Acoustical Society of America, 2003
An ultrasound imaging system provides for high density scanning (transmit/receive) of color flow signals. The ultrasound scan sequence of each transmitted and received color flow ultrasound beam is laterally spaced through the imaging field to calculate flow velocities.
openaire +1 more source
An ultrasound imaging system provides for high density scanning (transmit/receive) of color flow signals. The ultrasound scan sequence of each transmitted and received color flow ultrasound beam is laterally spaced through the imaging field to calculate flow velocities.
openaire +1 more source
The Journal of the Acoustical Society of America, 1990
An ultrasonic imaging apparatus comprising the main body containing a transmission system, a reception system composed of a plurality of receiving sections, a signal processing system, a display system, and a first connector, a probe unit containing a plurality of transducers, a second connector for connecting the probe unit to the first connector of ...
openaire +1 more source
An ultrasonic imaging apparatus comprising the main body containing a transmission system, a reception system composed of a plurality of receiving sections, a signal processing system, a display system, and a first connector, a probe unit containing a plurality of transducers, a second connector for connecting the probe unit to the first connector of ...
openaire +1 more source