Method for predicting a blood glucose level of a person
Method for predicting a blood glucose level of a person
 CN 101,193,592 A
 Filed: 05/04/2006
 Published: 06/04/2008
 Est. Priority Date: 05/05/2005
 Status: Active Grant
First Claim
1. one kind is utilized the partial near infrared spectrum of the person to scan the method for glucose level of predicting described people, and this method comprises:
 Under first group of wavelength and under second group of wavelength the people is being carried out the near infrared spectrum scanning of body part,Determine corresponding to first group of near infrared absorption value of described first group of wavelength with corresponding to second group of near infrared absorption value of described second group of wavelength,Determine corresponding to the firstorder difference of described first group of near infrared absorption value and corresponding to the second differnce of described second group of near infrared absorption value andUtilize described firstorder difference and second differnce to calculate described people'"'"'s blood sugar level.
Chinese PRB Reexamination
Abstract
A method for predicting blood glucose level of a person includes performing on the person a nearinfrared spectral scan of a body part at a first group of wavelengths and at a second group of wavelengths, determining a first group of nearinfrared absorbance values for the first group of wavelengths and a second group of nearinfrared absorbance values for the second group of wavelengths, determining a first difference for the first group of nearinfrared absorbance values and a second difference for the second group of nearinfrared absorbance values, and (4) calculating a blood glucose level for the person using the first and second differences.
14 Claims

1. one kind is utilized the partial near infrared spectrum of the person to scan the method for glucose level of predicting described people, and this method comprises:

Under first group of wavelength and under second group of wavelength the people is being carried out the near infrared spectrum scanning of body part, Determine corresponding to first group of near infrared absorption value of described first group of wavelength with corresponding to second group of near infrared absorption value of described second group of wavelength, Determine corresponding to the firstorder difference of described first group of near infrared absorption value and corresponding to the second differnce of described second group of near infrared absorption value and Utilize described firstorder difference and second differnce to calculate described people'"'"'s blood sugar level.


2. the process of claim 1 wherein that described first group of wavelength is included in first, second and threewavelength in 750nm to the 1700nm scope, and described second group of wavelength is included in the 4th, the 5th and the 6th wavelength in 750nm to the 1700nm scope.

3. the method for claim 2, wherein said first, second and threewavelength are in 750nm to 1125nm scope, and described the 4th, the 5th and the 6th wavelength is in 905nm to 1701nm scope.

4. the process of claim 1 wherein that described single order and second differnce are to utilize the equation of following form determined:

d＝
A·
w1+B·
w2+C·
w3Wherein d is described second differnce;
W1, w2 and w3 are the near infrared absorption values, A, and B and C are constants.


5. the method for claim 2, wherein said first to the 6th wavelength are to utilize based on the recursion method of tested object colony to determine.

6. the process of claim 1 wherein that described blood sugar level is to utilize the equation of following form to calculate:

c＝
D+(Ex(d1/d2))Wherein c is described blood sugar level, and d1 and d2 are described single order and second differnce, and D and E are the constants of rule of thumb determining.


7. the method for claim 6, wherein said constant D and E utilize based on the linear regression of tested object colony to determine.

8. one kind is utilized the partial near infrared spectrum of the person to scan the method for glucose level of predicting described people, and this method comprises:

Appraising model based on tested object colony is provided, described appraising model with the blood vessel of described tested object body part under first and second groups of wavelength near infrared absorption and the glucose level of described blood vessel connect, Under first group of wavelength and under second group of wavelength the people is being carried out the near infrared spectrum scanning of body part, Determine corresponding to first group of near infrared absorption value of described first group of wavelength and corresponding to second group of near infrared absorption value of described second group of wavelength and Utilize described appraising model to determine described people'"'"'s blood sugar level, described appraising model comprises; Determine corresponding to the firstorder difference of described first group of near infrared absorption value with corresponding to the second differnce of described second group of near infrared absorption value, With described firstorder difference divided by described second differnce, thereby obtain first result, Thereby with described first result multiply by first empirical obtain second result and Utilize described second result of the second empirical correction.


9. the method for claim 8, wherein said first, second and threewavelength are in the 750nm1125nm scope, and described the 4th, the 5th and the 6th wavelength is in the 905nm1701nn scope.

10. the method for claim 9, wherein said first, second and threewavelength are in the 750nm1125nm scope, and described the 4th, the 5th and the 6th wavelength is in the 905nm1701nm scope.

11. the method for claim 8, wherein said single order and second differnce are to utilize the equation of following form determined:

d＝
A·
w1+B·
w2+C·
w3Wherein d is described single order or second differnce;
W1, w2 and w3 are the near infrared absorption values, A, and B and C are constants.


12. the method for claim 11, wherein said wavelength are to utilize based on the recursion method of the blood sugar level of described tested object colony to determine.

13. the method for claim 8, wherein said first and second empiricals are to utilize based on the linear regression of the blood sugar level of described tested object colony to determine.

14. determine that by nearinfrared (NIR) absorption value the method for blood glucose level in humans, described nearinfrared (NIR) absorption value are that near infrared spectrum scanning by described people'"'"'s body part obtains for one kind, described method comprises:

Described NIR absorption value is divided into first and second groups, Determine corresponding to the firstorder difference of described first group of NIR absorption value with corresponding to the second differnce of described second group of NIR absorption value, With described firstorder difference divided by described second differnce, thereby obtain first result, Thereby with described first result multiply by first empirical obtain second result and Utilize described second result of the second empirical correction.

Specification(s)