Bladder volume measurement and calculation method under abdominal two-dimensional ultrasound

Abstract

The invention relates to a bladder volume measurement and calculation method under abdominal two-dimensional ultrasound. The method comprises the following steps that 1, the bladder is subjected to abdominal scanning, and a bladder two-dimensional image, namely, the median sagittal plane D1 is obtained through the ultrasound; 2, a probe is counterclockwise rotated by 90 degrees, and the maximum section, namely, the cross section D2 of the bladder median sagittal plane is obtained; 3, the probe is clockwise rotated by 45 degrees on the basis of the first median sagittal plane D1, and the maximum section, namely, the left slope D3 of the bladder median sagittal plane is obtained; 4, the probe is clockwise rotated by 45 degrees on the basis of the D2, and the maximum section, namely, the right slope D4 of the bladder median sagittal plane is obtained; 5, the center point Q of the median sagittal plane is positioned; 6, the median sagittal plane D1, the left slope D3 and the right slope D4 are measured; 7, the cross section D2 is measured; 8, the actual volume of the bladder is calculated according to a formula.

Description

technical field [0001] The invention relates to the field of bladder volume calculation methods, in particular to a bladder volume measurement and calculation method under transabdominal two-dimensional ultrasound. Background technique [0002] There are many methods for measuring and calculating bladder volume, such as CT, MRI, 131 I-OIH, ultrasound, catheterization, etc. Among them, catheterization is more accurate, and transabdominal ultrasound measurement is widely used in clinical practice due to its advantages of simple operation, low cost, non-invasiveness, and no damage. [0003] However, the shape of the bladder at different levels of filling is different. From very little residual volume to excessive filling volume, the shape of the sagittal plane changes greatly, and there is no obvious rule to follow. The shapes mainly include irregular narrow strips, irregular approximately small squares, irregular ovals, irregular trapezoids, approximately regular rounded squa...

AI Technical Summary

Problems solved by technology

Although this technology converts two-dimensional space images into three-dimensional space data and enhances computing power, its shortcomings are also obvious. It requires high hardware equipment and requires three-dimensional volume probes and related software support, and usually has three-dimensional volume functions. The ultrasonic instrument is large in size, not easy to carry and move, and the inspection cost is high; the operator must be proficient in the relevant operating techniques of three-dimensional volume imaging; the entire operation and calculation cycle is time-consuming and time-sensitive

[0006] At present, there are portable ultrasonic bladder volume measuring instruments on the market. The principle is that after two-dimensional or three-dimensional imaging, the software automatically calculates the boundary of the inner wall of the bladder to obtain the corresponding image perimeter and area data, and then inserts the data into the existing mathematical formula. , and finally the bladder capacity is obtained by combining the data of each area. This method has high requirements for hardware equipment, and the corresponding ultrasound equipment needs to be purchased separately, and there are related conditions in the process of use, such as those with surgical scars on the abdomen and those who are too obese. etc., and it is useless for objects beyond its scanning area

[0007] To find the volume of an irregular object from the perspective of calculus, it is necessary to subdivide the object into n small units for calculation. This method not only requires the relevant mathematical operation ability and foundation, but also has very high requirements for hardware equipment. Sampling the bladder with fine three-dimensional heavy-dimensional data, the decomposition is complicated, the calculation time is too long, the timeliness is extremely poor, and the clinical application is unrealistic

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