Methods, systems, and apparatus for evaluating test data of pelvic floor muscle

A system for evaluating test data of pelvic floor muscle, comprising:

• an input module, configured to obtain the test data of the pelvic floor muscle within a test period, wherein the test data includes an evaluation metric with temporal information, the evaluation metric includes an electromyography (EMG) value V and/or pressure value P of vagina, and the test data includes a test segment for type I muscle fibers and a test segment for type II muscle fibers;
• a curve construction, configured to preset a threshold value Bou_val, obtain a first baseline image for type I pelvic floor muscle fibers and a second baseline image for type II pelvic floor muscle fibers, construct a test curve for type I muscle and a test curve for type II muscle, respectively, based on the test segment for the type I muscle fibers and the test segment for the type II muscle fibers;
• wherein a planar Cartesian coordinate system is constructed with a test time as an X-axis and a percentage obtained by dividing an evaluation metric in the test segment for the type I muscle fibers by a maximum value of an evaluation metric in the first baseline image as a Y-axis, and a line formed in the system is the test curve corresponding to the type I pelvic floor muscle fibers;
• a planar Cartesian coordinate system is constructed with the test time as an X-axis and a percentage obtained by dividing an evaluation metric in the test segment for the type II muscle fibers by a maximum value of an evaluation metric in the second baseline image as a Y-axis, and a line formed in the system is the test curve corresponding to the type II pelvic floor muscle fibers;
• a calculation module, configured to determine a muscle strength grade and/or a fatigue degree for the type I muscle by combining the first baseline image and the test curve corresponding to the type I pelvic floor muscle fibers;
• and determine a muscle strength grade and/or a fatigue degree for the type II muscle by combining the second baseline image and the test curve corresponding to the type II pelvic floor muscle fibers;
• wherein
• the muscle strength grade for the type I muscle includes:
• designating a contraction area of the test curve corresponding to the type I pelvic floor muscle fibers as a first test area SA1, designating an area of the first baseline image that does not exceed the threshold value Bouval as a first reference area SB1, and obtaining the muscle strength grade of the test curve corresponding to the type I pelvic floor muscle fibers based on a first ratio F1 of the first test area SA1 to the first reference area SB1;
• the muscle strength grade for the type II muscle includes:
• designating a contraction area of the test curve corresponding to the type II pelvic floor muscle fibers as a first test area SA2, designating an area of the second baseline image that does not exceed the threshold value Bouval as a second reference area SB2, and obtaining the muscle strength grade of the test curve corresponding to the type II pelvic floor muscle fibers based on a second ratio F2 of the second test area SA2 to the second reference area SB2;
• discretizing the test curve corresponding to the type I pelvic floor muscle fibers into n1 consecutive data points in the muscle strength grade for the type I muscle, converting the first baseline image as a trapezoid-approximated image, and determining the first ratio F1 of the first test area SA1 to the first reference area SB1 by following equation (1):
• F
• 1
• =
• S
• A
• ⁢
• 1
• S
• B
• ⁢
• 1
• =
• ∑
• k
• =
• 1
• n
• 1
• ⁢
• point
• k
• 1
• 2
• *
• (
• 1
• t
• *
• (
• D
• 1
• +
• D
• 2
• )
• *
• n
• *
• h
• 1
• )
• *
• 1
• ⁢
• 0
• ⁢
• 0
• ⁢
• %
• (
• 1
• )
• wherein k denotes an ordinal number of a data point, k∈[1, n1], pointk denotes a Y-axis corresponding to a k-th data point, t denotes a test duration of the test curve corresponding to the type I pelvic floor muscle fibers, D1 and D2 denote an upper base and lower base of a trapezoidal image, respectively, h1 denotes a height of the trapezoidal image, and h1 is equal to the threshold value Bou_val;
• in the muscle strength grade for the type I muscle:
• in response to the first ratio F1∈[0%, 10%], outputting a result of the muscle strength grade for the type I muscle as a grade 0;
• in response to the first ratio F1∈(10%, 28%], outputting a result of the muscle strength grade for the type I muscle as a grade 1;
• in response to the first ratio F1∈(28%, 46%], outputting a result of the muscle strength grade for the type I muscle as a grade 2;
• in response to the first ratio F1∈(46%, 64%], outputting a result of the muscle strength grade for the type I muscle as a grade 3;
• in response to the first ratio F1∈(64%, 82%], outputting a result of the muscle strength grade for the type I muscle as a grade 4;
• and
• in response to the first ratio F1∈(82%, 100%], outputting a result of the muscle strength grade for the type I muscle as a grade 5.