Ultrasound Bladder Volume Measurement Using Cross-Section Line Segments
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Solution Overview
Problem
There is an increasing number of patients who do not feel the need to urinate despite their bladders being full, necessitating a more accurate method to measure bladder volume.
Innovation Solution
A bladder volume measuring device that calculates bladder volume using ultrasound transducers to generate cross-sectional images and employs straight lines and lookup tables to determine bladder volume based on the product of straight line lengths, considering shape and weight factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional bladder volume measurement methods are used, then the measurement process is simple, but the measurement precision is insufficient for patients who do not feel bladder fullness
Solution Approach 1:
The bladder measurement is divided into multiple linear segments (first straight line, second straight line, and additional straight lines) that cross the bladder region at different angles. Each segment's length is measured independently and then integrated through lookup tables to calculate the total bladder volume, enabling precise measurement without requiring complex 3D reconstruction
Solution Approach 2:
Lookup tables are pre-calculated and stored, containing the relationship between straight line lengths and bladder volumes for different bladder shapes. During measurement, the system only needs to measure the straight line lengths and query the pre-computed tables, avoiding real-time complex calculations while maintaining high precision
Solution Approach 3:
The system determines bladder shape by calculating ratios of straight line lengths (e.g., first straight line length to second straight line length). These shape parameters are then used to select appropriate lookup tables or calculation methods, adapting the measurement approach to the specific bladder geometry
2Measurement precision
If multiple straight lines and shape determination are used to improve measurement accuracy, then the measurement precision increases, but the calculation complexity increases
Solution Approach 1:
Complex volume calculation relationships are pre-computed and stored in lookup tables during system initialization. The runtime system only performs simple length measurements and table lookups, transferring the computational complexity from the measurement phase to the system setup phase
Solution Approach 2:
Complex geometric volume integration is replaced by querying pre-computed lookup tables based on measured straight line lengths. This substitutes complex mathematical computation with simple data retrieval operations
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
Accurately measures bladder volume by employing multiple straight lines and shape determination units to account for varying bladder shapes, enhancing urine measurement precision.
Implementation Method 1
an ultrasound transducer, configured to transmit an ultrasound transmission signal to a human bladder and receive an ultrasound reception signal reflected from the bladder
Data Source
AI summary
According to the bladder volume measuring device according to the present invention, it is possible to more accurately measure the amount of urine contained in the bladder by calculating the bladder volume according to the first straight line and the second straight line crossing the inside of the bladder region included in the cross-sectional image including the bladder.