Ultrasonic Diagnostic Apparatus Dynamic Acoustic Power Adjustment
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Solution Overview
Problem
Ultrasonic diagnostic apparatuses lack the ability to increase acoustic power in display modes while maintaining safety parameters within their upper limits, limiting user control over image sensitivity.
Innovation Solution
The apparatus includes an upper limit storage unit, acoustic power determination unit, increase/decrease instruction unit, parameter specifying unit, and acoustic power redetermination unit, allowing for dynamic adjustment of acoustic power ratios between modes to maintain safety parameters and enhance sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If acoustic power is increased to improve image sensitivity, then image quality is improved, but safety parameters (Ispta, MI, TI, TempRise) may exceed upper limits
Solution Approach 1:
The patent implements dynamic acoustic power adjustment by allowing real-time modification of acoustic power ratios between different display modes (e.g., B-mode, Color Doppler) through user input via adjustment knobs. The control unit dynamically recalculates acoustic power分配 based on current mode combinations and safety parameter constraints, enabling flexible optimization of image sensitivity while maintaining safety compliance.
Solution Approach 2:
The patent changes the acoustic power parameters by introducing a ratio adjustment mechanism that modifies the acoustic power distribution across different display modes. The control unit calculates new acoustic power values based on predetermined ratios and safety parameter limits, allowing parameter optimization without exceeding harmful factor thresholds.
2Object-affected harmful factors
If acoustic power is decreased to maintain safety parameters within upper limits, then safety is ensured, but image sensitivity deteriorates
Solution Approach 1:
The system dynamically adjusts acoustic power ratios in response to user input, allowing real-time optimization of the balance between safety compliance and image quality. The control unit continuously monitors safety parameters and adapts acoustic power分配 to maximize sensitivity within safe operating limits.
Solution Approach 2:
The patent incorporates preliminary calculation of acoustic power ratios based on predetermined tables or models that estimate safety parameter values before actual transmission. This allows the system to pre-determine safe acoustic power levels and plan optimal power distribution in advance, avoiding excessive safety margins that would reduce sensitivity.
3Object-affected harmful factors
If default acoustic power output ratios are used, then safety parameters are controlled, but user cannot freely adjust acoustic power for specific display modes
Solution Approach 1:
The patent transforms the static default acoustic power ratios into a dynamic adjustable system. Users can interact with adjustment knobs to modify acoustic power ratios in real-time, and the control unit processes these inputs to calculate new power distributions that maintain safety compliance while satisfying user needs for specific display mode optimization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to adjust acoustic power ratios, improving image sensitivity while ensuring safety parameters are not exceeded, preventing image degradation or loss when reducing power.
Implementation Method 1
an ultrasonic probe 2, a transmission/reception unit 4... which drives an ultrasonic probe 2 with acoustic powers corresponding to a plurality of display modes for a predetermined time width at a time so as to transmit and receive ultrasonic waves
Data Source
AI summary
An ultrasonic diagnostic apparatus includes an memory, an determination unit, an instruction unit, a specifying unit, and an redetermination unit. The memory stores upper limit values of parameters for restricting the powers in display modes. The determination unit determines the powers in the modes so as not to exceed upper limit values of the parameters. The instruction unit inputs an instruction to increase/decrease the power of a specific mode. The specifying unit specifies the parameter value in the specific mode. The redetermination unit determines an upper limit value of the parameter in a mode different from the specific mode based on the upper limit value of the parameter in the specific mode and the parameter value specified by the specifying unit.