Medical examination installation with improved image contrast
First Claim
1. A medical examination installation for examining a patient comprising:
- means for generating an examination field during an exposure time in which at least a portion of said patient is disposed;
means adapted for mechanically vibrating at least said portion of said patient during said exposure time;
means for detecting said field attenuated by said portion of said patient; and
means connected to said means for detecting for generating a visual image of said portion of said patient including means for generating differential images from chronologically successive signals supplied from said means for detecting;
wherein said visual image is enhanced as a result of said mechanical vibration.
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Accused Products
Abstract
A medical examination installation for generating images of a patient for visual display has a mechanical oscillator which vibrates at least a portion of the patient, of which an image is to be obtained, during the exposure time. The image is obtained with a pick-up device at an image frequency, and the mechanical vibration may be matched to, or differ from, the image frequency. The image is then subjected to image subtraction techniques, or selective filtering, which permits body parts which differ in terms of mechanical vibration properties from the surrounding tissue, for example calculi, to be clearly imaged, particularly the borders of those body parts.
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Citations
8 Claims
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1. A medical examination installation for examining a patient comprising:
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means for generating an examination field during an exposure time in which at least a portion of said patient is disposed; means adapted for mechanically vibrating at least said portion of said patient during said exposure time; means for detecting said field attenuated by said portion of said patient; and means connected to said means for detecting for generating a visual image of said portion of said patient including means for generating differential images from chronologically successive signals supplied from said means for detecting;
wherein said visual image is enhanced as a result of said mechanical vibration. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for examining a patient comprising the steps of:
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placing at least a portion of said patient in an examination field for an exposure time; detecting said examination field attenuated by said patient; mechanically vibrating at least said portion of said patient in said examination field during said exposure time; generating differential images of said portion of said patient during said exposure time from chronologically successive signals obtained from said means for detecting; and forming a visual image using said differential images, said visual image being enhanced as a result of the step of mechanically vibrating.
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Specification