Guidance of invasive medical devices by high resolution three dimensional ultrasonic imaging
First Claim
1. An ultrasonic surgical guidance imaging system which acts to guide the placement or observe the operation of an invasive medical device comprising:
- an ultrasonic probe including an array transducer which steers ultrasonic beams over a volumetric surgical region (120) for image guidance of the placement or operation of an invasive medical device;
a detector responsive to the placement of an invasive medical device which acts to detect the location of the device in an image region;
a transmit beamformer coupled to the array transducer and responsive to the detected location of an invasive medical device which acts to control the array transducer to transmit a greater beam density in the sub-volumetric region in the vicinity of the location of the invasive medical device than the beam density in the volumetric region surrounding the sub-volumetric region;
a receive beamformer coupled to the array transducer and responsive to echo signals from array elements for the formation of beams of coherent echo signals;
an image processor responsive to the coherent echo signals for producing a three dimensional ultrasonic image of the volumetric surgical region and the sub-volumetric region in the vicinity of the invasive medical device; and
a display coupled to the image processor which displays the three dimensional ultrasonic image of the volumetric surgical region and the sub-volumetric region in the vicinity of the invasive medical device.
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Accused Products
Abstract
A three dimensional ultrasonic diagnostic imaging system is operated to guide or observe the operation of an invasive medical device (30) in three dimensions. The appearance of the invasive device (30) in the three dimensional ultrasonic image is enhanced to be more readily observable by a clinician. The enhancement is produced by transmitting a greater ultrasonic beam density in a subvolumetric region including the invasive device (30) than in the surrounding portion of the volumetric region (120). The beam density may be uniformly high in the subvolumetric region and uniformly low in the surrounding region, or may taper from a relatively high beam density around the invasive device (30) to a minimum beam density at distances removed from the invasive device (30).
116 Citations
20 Claims
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1. An ultrasonic surgical guidance imaging system which acts to guide the placement or observe the operation of an invasive medical device comprising:
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an ultrasonic probe including an array transducer which steers ultrasonic beams over a volumetric surgical region (120) for image guidance of the placement or operation of an invasive medical device; a detector responsive to the placement of an invasive medical device which acts to detect the location of the device in an image region; a transmit beamformer coupled to the array transducer and responsive to the detected location of an invasive medical device which acts to control the array transducer to transmit a greater beam density in the sub-volumetric region in the vicinity of the location of the invasive medical device than the beam density in the volumetric region surrounding the sub-volumetric region; a receive beamformer coupled to the array transducer and responsive to echo signals from array elements for the formation of beams of coherent echo signals; an image processor responsive to the coherent echo signals for producing a three dimensional ultrasonic image of the volumetric surgical region and the sub-volumetric region in the vicinity of the invasive medical device; and a display coupled to the image processor which displays the three dimensional ultrasonic image of the volumetric surgical region and the sub-volumetric region in the vicinity of the invasive medical device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of ultrasonically guiding the placement or observing the operation of an invasive medical device comprising:
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transmitting ultrasonic beams over a volumetric region which includes the location of an invasive medical device in a sub-volume of the volumetric region; detecting the location of the sub-volume; controlling the beam density of the ultrasonic beams transmitted in the volumetric region in response to the detecting to be relatively high in the sub-volume in the vicinity of the invasive medical device, and to be relatively low at distances of the volumetric region removed from the sub-volume; receiving echo signals from the volumetric region and the sub-volume in response to the transmitted beams; processing the received echoes to produce a three dimensional ultrasonic image of the volumetric region and the invasive medical device; and displaying the three dimensional ultrasonic image of the volumetric surgical region and the subvolume including the invasive medical device. - View Dependent Claims (8, 9, 10)
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11. A method of ultrasonically guiding the placement or observing the operation of an invasive medical device comprising:
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transmitting ultrasonic beams over a volumetric region which includes the location of an invasive medical device; identifying the location of the invasive medical device in the volumetric region; controlling the beam density of the ultrasonic beams transmitted in the volumetric region in response to the identification of the location to be relatively high in the vicinity of the identified location of the invasive medical device, and to be relatively low at distances of the volumetric region removed from the invasive medical device; receiving echo signals from the volumetric region in response to the transmitted beams; processing the received echoes to produce a three dimensional ultrasonic image of the volumetric region and the invasive medical device; displaying the three dimensional ultrasonic image of the volumetric surgical region and the invasive medical device. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An ultrasonic surgical guidance imaging system which acts to guide the placement or observe the operation of an invasive medical device comprising:
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an ultrasonic probe including an array transducer which steers ultrasonic beams over a volumetric surgical region for image guidance of the placement or operation of an invasive medical device; a transmit beamformer coupled to the array transducer which acts to control the spatial beam density of the beams transmitted by the array transducer in the volumetric region; a detector responsive to echo signals from the array transducer which acts to detect the location of the invasive medical device in the volumetric region; a multiline receive beamformer coupled to the array transducer and responsive to the detection of the location of the invasive medical device and to echo signals from array elements for the production of different orders of received multilines in the vicinity of the invasive medical device and in the volumetric region at locations removed from the invasive medical device location; an image processor responsive to the received multilines for producing a three dimensional ultrasonic image of the volumetric surgical region and the invasive medical device; and a display coupled to the image processor which displays the three dimensional ultrasonic image of the volumetric surgical region and the invasive medical device. - View Dependent Claims (18, 19, 20)
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Specification