Optical coherent imaging medical device
View Patent ↗An OCI medical device includes a coherent light source, a light sensor, a first processing unit adapted to calculate OCI Data from the light sensor, a control unit which allows taking or loading of at least one Reference OCI Value, a second processing unit adapted to calculate the Intra-Individual Relative Assessment of the OCI Data of an Imaging Zone and the at least one OCI Reference Value, and display means adapted to show at least one Relative OCI Value. Uses and a method for assessing the blood flow of a body region use OCI imaging and include an Intra-Individual Relative Assessment between OCI Data of the Imaging Zone and at least one Reference OCI Value.
1. An optical coherent imaging (OCI) medical device for imaging the tissue of a subject comprising:
a coherent light source configured to illuminate an imaging zone of the subject;
a light sensor with a two-dimensional array of pixels configured to capture an image from the imaging zone;
a first processing unit configured to process data received from the light sensor and calculate Absolute OCI Data corresponding to blood flow in the imaging zone;
a control unit which allows taking or loading of at least one Reference OCI Value associated with blood flow in a body part spaced from the imaging zone;
a second processing unit adapted to calculate Relative OCI Data, said Relative OCI Data being proportional to perfusion, velocity and/or concentration of the blood flow in the imaging zone, said Relative OCI data being calculated based on the calculated Absolute OCI Data from the imaging zone modified by the at least one Reference OCI Value and wherein the calculation is based on one of (a) a division of the Absolute OCI Data with the at least one Reference OCI value and (b) a difference between the at least one Reference OCI value and the Absolute OCI data; and
a display adapted to show the calculated Relative OCI Data.
2. The device according to claim 1 , wherein said two processing units are forming a single processing unit.
3. The device according to claim 1 , which is adapted for performing Laser Doppler Imaging (LDI).
4. The device according to claim 1 , which is adapted for performing a Laser Speckle Contrast Analysis (LASCA) or Laser Speckle Imaging (LSI).
5. The device according to claim 1 , further comprising a Body Mapping Factor Database including body mapping factor values for a population group, wherein each of the body mapping factor values represents a relationship of OCI values between two body areas for the population group.
6. The device according to claim 5 where the body mapping factor values are calculated based on the ratio of the OCI Values between two body areas.
7. A method for assessing the blood flow of a body region using optical coherent imaging (OCI) comprising;
illuminating an imaging zone in the body region with coherent light from a coherent light source;
capturing an image from the imaging zone with a light sensor having a two-dimensional array of pixels;
calculating in a processor Absolute OCI Data from the captured image data corresponding to blood flow;
capturing or loading at least one Reference OCI Value associated with blood flow in a body part spaced from the imaging zone;
calculating in the processor Relative OCI Data, said Relative OCI data being proportional to perfusion, velocity and/or concentration of the blood flow in the imaging zone, said Relative OCI data being calculated based on the calculated Absolute OCI Data from the imaging zone modified by the at least one Reference OCI Value and wherein the calculation is based on one of (a) a division of the Absolute OCI Data with the at least one Reference OCI value and (b) a difference between the at least one Reference OCI value and the Absolute OCI data; and
displaying the Relative OCI Data on a display.
8. The method according to claim 7 , further comprising using a Body Mapping Factor Database including body mapping factor values for a population group, wherein each of the body mapping factor values represents a relationship of OCI values between two body areas for the population group.
9. The method according to claims 7 , wherein the at least one Reference OCI Value is obtained or filtered such that pulsations of the heart beat are removed.
10. The device according to claim 1 , wherein the device is used to assess burn wounds or flap viability.
11. The device according to claim 1 , wherein the device is used to assess systemic vascular issues.
12. The device according to claim 1 wherein the device is used to assess ulcers or bedsores.
13. The device according to claim 5 , wherein the control unit is configured to select the body mapping factor value based on the locations of the imaging zone and the body part spaced from the imaging zone and modify the Relative OCI Data with the selected body mapping factor value.
14. The device according to claim 1 wherein the calculation of a Relative OCI Value is performed for each pixel in the Absolute OCI Data.
15. The method according to claim 8 further comprising:
selecting the body mapping factor value representing the relationship of the OCI values between two body areas for the population group based on the locations of the imaging zone and the body part spaced from the imaging zone and modifying the Relative OCI Data with the selected body mapping factor value.
16. An optical coherent imaging (OCI) medical device for imaging the tissue of a subject comprising:
a coherent light source configured to illuminate an imaging zone of the subject;
a light sensor with a two-dimensional array of pixels configured to capture an image from the imaging zone;
a first processing unit configured to process data received from the light sensor and calculate Absolute OCI Data corresponding to blood flow in the imaging zone;
a control unit which allows taking or loading of at least one Reference OCI Value associated with blood flow in a body part spaced from the imaging zone;
a second processing unit adapted to calculate Relative OCI Data, said Relative OCI Data being proportional to perfusion, velocity and/or concentration of the blood flow in the imaging zone, said Relative OCI data being calculated based on the calculated Absolute OCI Data from the imaging zone modified by the at least one Reference OCI Value;
a Body Mapping Factor Database including body mapping factor values for a population group, wherein each of the body mapping factor values represents a relationship of OCI values between two body areas for the population group and wherein the control unit is configured to select the body mapping factor value based on the locations of the imaging zone and the body part spaced from the imaging zone and modify the Relative OCI Data with the selected body mapping factor value; and
a display adapted to show the modified Relative OCI Data.
17. A method for assessing the blood flow of a body region using optical coherent imaging (OCI) imaging comprising;
illuminating an imaging zone in the body region with coherent light from a coherent light source;
capturing an image from the imaging zone with a light sensor having a two-dimensional array of pixels;
calculating in a processor Absolute OCI Data from the captured image data corresponding to blood flow;
capturing or loading at least one Reference OCI Value associated with blood flow in a body part spaced from the imaging zone;
calculating in the processor Relative OCI Data, said Relative OCI data being proportional to perfusion, velocity and/or concentration of the blood flow in the imaging zone, said Relative OCI data being calculated based on the calculated Absolute OCI Data from the imaging zone modified by the at least one Reference OCI Value;
using a Body Mapping Factor Database including body mapping factor values for a population group, wherein each of the body mapping factor values represents a relationship of OCI values between two body areas for the population group and selecting a body mapping factor value based on the locations of the imaging zone and the body part spaced from the imaging zone and modifying the Relative OCI Data with the selected body mapping factor value; and
displaying the modified Relative OCI Data on a display.