Grey-level ultrasonic imaging
First Claim
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1. A grey-level ultrasonic imaging system comprising:
- ultrasonic test means for generating an ultrasonic wave, impinging said ultrasonic wave upon a test specimen, receiving acoustical waves from said test specimen and converting said acoustical waves into electrical signals,amplifier means for amplifying said electrical signals,linear receiver means for receiving said amplified signals and emitting positive voltage signals proportional to said amplified signals,gating means controlling the operating times of said linear receiver,signal converting means for converting said positive voltage signals into non-linear function signals,dot-packing module means for receiving said non-linear function signals from said signal converting means,tone-burst generator means for delivering tone-burst generator signals to said dot-packing module means,said dot-packing module means producing modulated dot width output terminals with spacing between the dots being controlled by said tone-burst generator signals and the width of said modulated dots controlled by said non-linear function signals with said dot widths being generally proportional to the amplitude of said non-linear function signals, anddata receiving means for receiving said modulated dot width output signals, whereby said data receiving means may record or display said modulated dot width output signals.
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Abstract
Apparatus and method for grey-level ultrasonic imaging employing a storage oscilloscope. In medical diagnostic uses, a patient originated ultrasonically reflected wave is converted into an electrical signal which is so modulated as to result in grey-level type display on a bistable type storage oscilloscope or otherwise recorded or displayed. This display may be directly produced and immediately viewed.
25 Citations
48 Claims
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1. A grey-level ultrasonic imaging system comprising:
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ultrasonic test means for generating an ultrasonic wave, impinging said ultrasonic wave upon a test specimen, receiving acoustical waves from said test specimen and converting said acoustical waves into electrical signals, amplifier means for amplifying said electrical signals, linear receiver means for receiving said amplified signals and emitting positive voltage signals proportional to said amplified signals, gating means controlling the operating times of said linear receiver, signal converting means for converting said positive voltage signals into non-linear function signals, dot-packing module means for receiving said non-linear function signals from said signal converting means, tone-burst generator means for delivering tone-burst generator signals to said dot-packing module means, said dot-packing module means producing modulated dot width output terminals with spacing between the dots being controlled by said tone-burst generator signals and the width of said modulated dots controlled by said non-linear function signals with said dot widths being generally proportional to the amplitude of said non-linear function signals, and data receiving means for receiving said modulated dot width output signals, whereby said data receiving means may record or display said modulated dot width output signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A grey-level ultrasonic imaging apparatus comprising:
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amplifier means for amplifying electrical signals which are related to acoustical waves received by an ultrasonoscope from a test specimen, linear receiver means for receiving said amplified signals and emitting positive voltage signals proportional to said amplified signals, gating means controlling the operating times of said linear receiver, - View Dependent Claims (24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 44, 46, 48)
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23. signal converting means for converting said positive voltage signals into non-linear function signals,
dot-packing module means for receiving said non-linear function signals from said signal converting means, tone-burst generator means for delivering tone-burst generator signals to said dot-packing module means, and said dot-packing module means producing modulated dot width output signals with spacing between said dots being controlled by said tone-burst generator signals and the width of said modulated dots controlled by said non-linear function signals with said dot widths being generally proportional to the amplitude of said non-linear function signals, whereby delivery of said modulated dot width output signals to data receiving means will permit display or recording of said modulated dot width output signals.
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41. A method of ultrasonic grey-level imaging comprising:
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amplifying electrical signals which are related to acoustical waves received by an ultrasonoscope from a test specimen, converting said amplified electrical signals to positive voltage signals monotonically related to said amplified electrical signals, converting said positive voltage signals to non-linear function signals, producing modulated dot width output signals having dot widths generally proportional to the amplitude of said non-linear function signals, controlling the spacing between said dots by tone-burst generator signals, and displaying said modulated dot width output signals. - View Dependent Claims (43, 45, 47)
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Specification