CN109820526B - Method for measuring urinary line F value - Google Patents
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- CN109820526B CN109820526B CN201910146155.9A CN201910146155A CN109820526B CN 109820526 B CN109820526 B CN 109820526B CN 201910146155 A CN201910146155 A CN 201910146155A CN 109820526 B CN109820526 B CN 109820526B
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Abstract
The invention belongs to the technical field of urination dynamics, and relates to a method for measuring a urine line F value, which comprises the steps of firstly dynamically capturing a urine line when a human body urinates, dynamically recording urine line data in the whole urination process, and simultaneously placing a urine line F value reference object beside the urine line when the human body urinates; then obtaining the corresponding F value of the urine line when the human body urinates in the urine line F value reference object through the comparison between the urine line when the human body urinates and the urine line F value reference object; and finally, calculating and obtaining the urine line F value of the human body when urinating. The invention adopts a direct measurement mode to obtain the urine line F value, and solves the technical problem that the urine line F value can not be directly measured in the prior art.
Description
Technical Field
The invention belongs to the technical field of urodynamics, and relates to a method for measuring a urinary line F value.
Background
Urethral F-number refers to the F-number of the urethra distended by the urine flow during urination and is typically displayed by voiding urethrography. The urethra F value is 10d pi 20r pi, and the urethra F value differs for each urethra segment. The actual unit of the F value is expressed in millimeters of the perimeter of the cross section of the urethral lumen at the time of urination, while the unit of the diameter d and the radius r of the cross section of the urethral lumen at the time of urination is centimeters cm. Then, the formula of the unified unit is: the value of F is 10d pi 20r pi. When in urination, the posterior urethra and the membrane part can be relaxed actively, and the posterior urethra and the membrane part are firstly inflated passively to open the urethra cavity, so that the F value of the posterior urethra cavity is truly reflected. The remaining anterior urethra is a passively distended urethral cavity, with an unrealistic anterior urethra F-number. When the urethral resistance R is calculated, the front and rear urethral resistances are respectively calculated and then superposed together to be connected in series to form the total urethral resistance R. However, the F value of the urinary line is the comprehensive expression of the F value of each urinary tract segment during urination, and is a comprehensive objective index for the superposition of the resistance of each segment of the F value of each segment of the urinary tract, and the F value of the urinary line is one of parameters in urination kinetics, is one of the external manifestations of various diseases of urination dysfunction of the lower urinary tract, comprehensively reflects whether urination is smooth or not, and is greatly related to the resistance of the urinary tract.
In modern medicine, the urinary line F value is four or two poking jacks which poke the urethral resistance R, various pressures and the urinary flow rate Q, so that the accurate acquisition of the urinary line F value is very important. However, in the prior art, the urinary line F value cannot be directly measured, and only by calculating the known values of the measured bladder pressure Pves, the urethral outlet pressure Po, the pressure difference Pdif between the bladder pressure Pves and the urethral outlet pressure Po during urination, the urinary flow rate Q and other parameters, the obtained urinary line F value lacks certain accuracy, and meanwhile, the acquisition of some parameters of the relevant parameters has invasiveness and unnaturalness.
Disclosure of Invention
The invention aims to provide a method for measuring a urinary line F value, which adopts a direct measurement mode to obtain the urinary line F value and solves the technical problem that the urinary line F value can not be directly measured in the prior art.
In order to achieve the above purpose, the present invention adopts the following design structure and design scheme.
A method for measuring the F value of urine line includes dynamically capturing the urine line of human body during urination, recording the data of urine line during the whole urination process, and placing a reference object of F value of urine line beside the urine line during urination; then obtaining the corresponding F value of the urine line when the human body urinates in the urine line F value reference object through the comparison between the urine line when the human body urinates and the urine line F value reference object; and finally, calculating and obtaining the urine line F value of the human body when urinating.
Further, the reference object of the urinary line F value is a urinary line F value ruler which is composed of a plurality of columns with different thicknesses, the columns with different thicknesses represent different sizes of the urinary line F value and comprise 3F, 4F, 5F, 6F, 8F, 10F, 12F, 14F, 16F and 18F, and F is the circumference millimeter mm value of the section of the column.
Further, the assay method comprises the steps of: firstly, a urinary line F value ruler is arranged beside a urinary line when a human body urinates, the urinary line of the human body is dynamically captured when the human body urinates, and the urinary line data of the whole urination process are recorded; step two, comparing the urine line when the human body urinates with the urine line F value ruler to obtain the corresponding F value of the urine line when the human body urinates in the urine line F value ruler; and step three, calculating and obtaining the urine line F value when the human body urinates, wherein the urine line F value X is k D. F/D, wherein k is a coefficient, F is a corresponding value in the urine line F value ruler, D is a diameter dynamic capture numerical value of the corresponding value in the urine line F value ruler, and D is a urine line diameter dynamic capture numerical value when the human body urinates.
Furthermore, the urine line when the human body urinates is a columnar urine line part when the human body urinates.
Further, the method for determining the columnar urinary line part comprises the following steps: according to the three-dimensional observation of the urine flow ejected from the external urethral opening, immediately after the urine flow exits from the external urethral opening, the urine flow has a flat shape on the vertical plane, and then the urine flow rotates to a flat shape on the horizontal plane, and a point 1/3 outside the urine flow distance between the flat shape on the vertical plane and the flat shape on the horizontal plane corresponds to a columnar urine flow portion.
Furthermore, the columnar urinary line part of the human body during urination is dynamically captured by a digital video camera or a camera.
Furthermore, when the columnar urinary line part of the human body during urination is dynamically captured by the camera, a continuous photographing mode is adopted at intervals of 0.5 seconds.
Further, different gauges of dilation tubes or different gauge ureteral catheters may be used as the columns.
The invention utilizes digital camera shooting technology, dynamically captures the urine line of a human body in the urination process by adopting a camera shooting or continuous shooting mode, and calculates and obtains the urine line F value by taking a urine line F value ruler arranged beside the urine line as a reference. When the human body urinates, the value of the urine line F is the perimeter millimeter value of the section circle of the urine line. The section of the urine ray F value at the external orifice of the urethra is circular or elliptical or scattered irregular, and the urine ray F value can be calculated according to specific conditions.
The key point of the method is to accurately find out the acquisition part of the urinary line F value, namely to accurately capture the columnar urinary line part of the human body in the urination process, and the columnar urinary line part is observed in three dimensions according to the urinary line of the urine flow sprayed out of the external orifice of the urethra. According to the observation, when a human body urinates and urine flows out of the external urethra, the urine line is in a flat shape of a longitudinal surface, then the urine line rotates to be in a flat shape of a transverse surface, and the flat shape of the longitudinal surface and the flat shape of the transverse surface are intersected to form a columnar urine line.
By the method, a columnar urinary line part at a certain position at a certain moment is captured, and the urinary line F value at the position at the moment can be calculated, so that the urinary line F value in the whole urination process can be calculated; meanwhile, the columnar urinary line part of the whole urinary line at a certain moment can be captured simultaneously, so that all the urinary line F values of the urinary line at the moment can be calculated, and a dynamic urinary line F value curve can be drawn by using computer software, wherein the Fmax meaning is the maximum.
Because the urine flow line of human body urination is in a turbulent state, every urination is thrown in a spiral direction of right hand or in a spiral direction of left hand. In the northern hemisphere where people live, the urinary stream line is most commonly used for rotationally discharging urine in the right-hand spiral direction, and the urine is like that the floor drain water in the northern hemisphere always flows out in a way that the right-hand spiral rotates downwards; in the southern hemisphere, the stream of urine is usually discharged by rotating the left hand in a spiral direction. When male urinates in a standing position or female urinates in a sitting position, the bladder bottom and the bladder neck rotate in the spiral direction of the right hand under the action of normal low bladder pressure Pves to discharge urine flow along the urethra, and the urine volume discharged in unit time under the condition of low urethra resistance expresses normal urination under the normal urine flow rate Q. Thereby presenting a flattened, right-handed, spiral-wise rotating urinary stream at the external urethral meatus.
Why do you have a left and right handed spiral urine flow line? It may be the case that the full-course urethra favors left and right handed helical anatomical and pathological anatomical structures, such as high bladder pressure Pes, benign prostatic hyperplasia BPH herniation urination, the direction of internal sphincter contraction, the relative narrowing of the urethra favors left or right handed helical rotation, urethritis favors left or right handed helical rotation, and the like. If the urinary stream line rotating in the left-hand or right-hand spiral direction is not influenced by the above urinary tract factors, most of the urinary stream lines for urination conform to the rule of the south-north hemisphere due to the influence of the earth magnetic field.
Compared with the prior art, the method can directly measure and calculate the urinary line F value when the human body urinates without calculating by measuring the values of the bladder pressure Pves, the urethral outlet pressure Po, the pressure difference Pdif between the bladder pressure Pves and the urethral outlet pressure Po during urination, the urine flow rate Q and other parameters, avoids the influence of invasive measurement and measurement of other parameters on the real urinary line F value, has higher precision of the obtained urinary line F value, and has reference value for reflecting the smoothness of urination. Meanwhile, the method for measuring the urinary line F value can measure the urinary line F value when a human body urinates only by referring and comparing the urinary line during the process of urinating with the urinary line F value ruler, has the advantages of non-invasiveness, convenience in operation and the like, and is convenient to popularize and use.
Drawings
FIG. 1 is a schematic view showing the structure of a urinary F-value ruler according to the method of the present invention.
FIG. 2 is a state diagram of the measurement of urinary F values using the method of the present invention.
Wherein, the labels in the figure are: 1-urinary tract; 2-a digital video camera; 3-urinary F-value ruler.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in FIG. 1, the urinary line F value ruler according to the method of the present invention is composed of a plurality of different thickness columns, wherein the different thickness columns represent different urinary line F values, including 3F, 4F, 5F, 6F, 8F, 10F, 12F, 14F, 16F and 18F, wherein F is the perimeter mm value of the section of the column.
The state of measuring the urine line F value by using the method of the invention is shown in figure 2, a urine line 1 is formed by human body urination, urine line F value rulers 3 are arranged beside the urine line 1 at intervals of 3cm, and a digital camera 2 is simultaneously arranged for dynamically capturing the urine line 1 and the urine line F value rulers 3 formed in the human body urination process.
The urinary line F value X is kD.F/D, wherein k is a coefficient, F is a corresponding value in the urinary line F value ruler, D is a diameter dynamic capture value of the corresponding value in the urinary line F value ruler, and D is a urinary line diameter dynamic capture value when a human body urinates.
Since the image of the urinary line F captured by the camera is different from that of the urinary line F ruler 3, that is, the difference value exists between the far and near, the coefficient adjustment is needed. In this embodiment, the distance between the digital camera 2 and the ruler surface of the urine line F value ruler 3 is about 25cm, and the distance between the urine line 1 and the urine line F value ruler 3 is 3cm, that is, the distance between the urine line 1 and the urine line F value ruler 3 is 3cm closer to the digital camera 2 than the distance between the urine line F value ruler 3, so that the difference between the near size and the far size is caused, and the urine line F value is increased to cause distortion. Therefore, one correction coefficient k is used for correction.
Wherein k value is calculated by using two urinary F value rulersPlacing at a distance of 3cm, taking pictures under the condition of the above-mentioned shooting distance of 25cm of digital video camera 2, respectively taking diameter d of 18F of front and rear two urinary line F-value rulers1And D2，k＝d1/D2. Different k values can be calculated according to different shooting distances of the video camera or the camera.
Generally, when the human body is urinated in a state of a drop, the urine line F is regarded as 3F, and when the human body is urinated in a state of a thin line, the urine line F is regarded as 4F. At a human urine output of 150-400 ml and at a maximum urine flow rate Q, the typical obstruction threshold urinary line F is 7.7F, i.e., about 8F, corresponding to a Qmax of about 10-12 ml/s. By calculation and comparison, the urinary F value obtained by the method of the present invention corresponds to the above empirical value.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (6)
1. A method for measuring the F value of urine line is characterized in that the method comprises the steps of dynamically capturing the urine line of a human body during urination, recording the urine line data of the whole urination process, and simultaneously placing a reference object of the F value of urine line beside the urine line of the human body during urination; then obtaining the corresponding F value of the urine line when the human body urinates in the urine line F value reference object through the comparison between the urine line when the human body urinates and the urine line F value reference object; finally, calculating and obtaining the urine line F value when the human body urinates;
the urine line when the human body urinates is a columnar urine line part when the human body urinates;
the method for determining the columnar urinary line part comprises the following steps: according to the three-dimensional observation of the urine flow ejected from the external urethral opening, immediately after the urine flow exits from the external urethral opening, the urine flow has a flat shape on the vertical plane, and then the urine flow rotates to a flat shape on the horizontal plane, and a point 1/3 outside the urine flow distance between the flat shape on the vertical plane and the flat shape on the horizontal plane corresponds to a columnar urine flow portion.
2. The method for measuring the F value of the urine line according to claim 1, wherein the reference substance of the F value of the urine line is a F value ruler of the urine line, the F value ruler of the urine line is composed of a plurality of columns with different thicknesses, the columns with different thicknesses represent different F value sizes of the urine line, and the F value comprises 3F, 4F, 5F, 6F, 8F, 10F, 12F, 14F, 16F and 18F, and the F value is the value of the millimeter of the perimeter of the section of the column.
3. A method for determining the F-number of a urinary ray according to claim 1 or 2, characterized in that it comprises the following steps:
firstly, a urinary line F value ruler is arranged beside a urinary line when a human body urinates, the urinary line of the human body is dynamically captured when the human body urinates, and the urinary line data of the whole urination process are recorded;
step two, comparing the urine line when the human body urinates with the urine line F value ruler to obtain the corresponding F value of the urine line when the human body urinates in the urine line F value ruler;
and step three, calculating and obtaining the urine line F value when the human body urinates, wherein the urine line F value X is k D. F/D, wherein k is a coefficient, F is a corresponding value in the urine line F value ruler, D is a diameter dynamic capture numerical value of the corresponding value in the urine line F value ruler, and D is a urine line diameter dynamic capture numerical value when the human body urinates.
4. The method for measuring a urinary F-number according to claim 1, wherein the columnar urinary line portion of the human body at the time of urination is dynamically captured by a digital video camera or a photographic camera.
5. The method for measuring the F-value of urinary cord as claimed in claim 4, wherein the columnar urinary cord portion of human body at the time of urination is captured dynamically by a camera, and pictures are taken continuously at intervals of 0.5 seconds.
6. The method of claim 2, wherein different sizes of dilating tubes or different numbers of ureteral catheters are used as the column.
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