BIOPHOTONIC MEASUREMENT DEVICE, BIOPHOTONIC MEASUREMENT DEVICE OPERATING METHOD, AND BIOPHOTONIC MEASUREMENT DATA ANALYSIS AND DISPLAY METHOD

• US 20140206962A1
• Filed: 02/29/2012
• Published: 07/24/2014
• Est. Priority Date: 04/15/2011
• Status: Abandoned Application

• Current Assignee: Hitachi Medical Corporation (Hitachi, Ltd.)
• Original Assignee: Hitachi Medical Corporation (Hitachi, Ltd.)
• Inventors: Tanii, Michiyo
• Application Number:
  US14/009,209
• Publication Number:
  US 20140206962A1
• Time in Patent Office: Days
• US Class Current: 600/322
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/14553 specially adapted for cerebral tissue
• CPC Class Codes: A61B 5/6814 Head
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00
• CPC Class Codes: A61B 5/7271 Specific aspects of physiological measurement analysis A61B5/316, A61B5/349 and A61B5/374 take precedence
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems

Abstract

Result data indicating distribution of a biological metabolite concentration of a subject are generated by using biophotonic measurement data obtained with a biophotonic measurement device, whether the result data satisfy an arbitrary extraction condition concerning biophotonic measurement data set beforehand or not is judged, the result data are distinguishably displayed according to the results of the judgment, and thereby failure of extraction of measurement data of characteristic channels from result data obtained from as many as several tens of channels is prevented without depending on subjectivity of measurement operator.

Claims

1. A biophotonic measurement device comprising an irradiation and measurement part for irradiating near-infrared light on a measurement site of a subject, measuring transmitted light intensities of the near-infrared light at a plurality of measurement points of the subject, and outputting signals corresponding to the transmitted light intensities at the measurement points as biophotonic measurement data of the measurement points, and

a display controller for displaying result data indicating distribution of a biological metabolite concentration of the subject based on the biophotonic measurement data, wherein:

the display controller comprises a result data generation part for generating the result data by using the biophotonic measurement data,

an extraction condition setting part which sets an arbitrary extraction condition for the biophotonic measurement data,

an extraction processing part which judges whether the biophotonic measurement data satisfy the extraction condition or not and performing extraction of the biophotonic measurement data on the basis of results of the judgment, and

a distinguishable display processing part which distinguishably displays the result data on the basis of whether the biophotonic measurement data satisfy the extraction condition or not.

2. The biophotonic measurement device according to claim 1, wherein:

the extraction condition setting part sets at least one of a ratio relative to a standard value of the biological metabolite concentration or value of the biological metabolite concentration, time passed from a standard time corresponding to a time point at which the subject starts a task, and a time frame used for calculation of change of the biological metabolite concentration, as the extraction condition.

3. The biophotonic measurement device according to claim 2, wherein:

the extraction condition setting part sets a ratio relative to a standard value of the biological metabolite concentration or value of the biological metabolite concentration, and a time frame used for calculation of change of the biological metabolite concentration as the extraction condition,

the extraction processing part judges in which state the subject is among states of;

a maintenance reaction where, during the time frame, ratio relative to the standard value or value of the biological metabolite concentration of the subject is not lower than the ratio relative to the standard value or value of biological metabolite concentration defined as the extraction condition, and the ratio or value continues,

an increasing reaction where, during the time frame, ratio relative to the standard value or value of the biological metabolite concentration of the subject is not lower than the ratio relative to the standard value or value of biological metabolite concentration defined as the extraction condition, and the biological metabolite concentration increases,

a decreasing reaction where, during the time frame, ratio relative to a standard value or value of the biological metabolite concentration of the subject is not lower than the ratio relative to the standard value or value of the biological metabolite concentration defined as the extraction condition, and the biological metabolite concentration decreases, and

no reaction where, during the time frame, a state that ratio relative to the standard value or value of the biological metabolite concentration of the subject is lower than the ratio relative to the standard value or value of the biological metabolite concentration defined as the extraction condition continues, and

the distinguishable display processing part distinguishably displays the result data by using display modes corresponding to the aforementioned states.

4. The biophotonic measurement device according to claim 1, wherein:

the result data generation part generates an enlarged topography image in which geometric figures surrounding the measurement points of the biological metabolite concentration of the subject are displayed by using one display mode for displaying whether the extraction condition is satisfied or not.

5. The biophotonic measurement device according to claim 1, wherein:

the result data generation part generates waveform graphs indicating temporal change of the biological metabolite concentration for the measurement points, and

the distinguishable display processing part distinguishably displays waveform graphs satisfying the extraction condition and waveform graphs not satisfying the extraction condition.

6. The biophotonic measurement device according to claim 5, wherein:

the result data generation part generates a waveform map in which waveform graphs corresponding to the measurement points are arranged in accordance with arrangement of the measurement points,

the extraction processing part judges whether the extraction condition is satisfied or not for the waveform graphs, and

the distinguishable display processing part distinguishably displays the waveform graphs in the waveform map on the basis of whether the extraction condition is satisfied or not.

7. The biophotonic measurement device according to claim 5, wherein:

a time specification part for specifying an arbitrary time on the waveform graphs is further provided,

the extraction processing part judges whether the extraction condition is satisfied or not at the specified time, and

the distinguishable display processing part distinguishably displays the whole of the waveform graph.

8. The biophotonic measurement device according to claim 5, wherein:

the extraction processing part divides one of the waveform graphs into a plurality of regions, and judges whether the extraction condition is satisfied or not for each region, and

the distinguishable display processing part distinguishably displays the regions of the one waveform graph on the basis of whether the extraction condition is satisfied or not.

9. The biophotonic measurement device according to claim 1, wherein:

when the extraction processing part judges that the extraction condition is not satisfied, the distinguishable display processing part displays the result data by using a display mode corresponding to no satisfaction, and when the extraction processing part judges that the extraction condition is satisfied, the distinguishable display processing part displays the result data by using a display mode corresponding to the biological metabolite concentration.

10. The biophotonic measurement device according to claim 1, wherein:

a measurement result storage which stores biophotonic measurement data obtained by making different subjects perform the same task is further provided,

the result data generation part generates the result data for the same time based on the time when the same task is started for each subject as the standard,

the extraction processing part judges whether the extraction condition is satisfied or not at that same time, and

the distinguishable display processing part displays juxtapositionally the result data generated for the different subjects, and distinguishably displays the result data on the basis of whether the extraction condition is satisfied or not.

11. The biophotonic measurement device according to claim 1, which further comprises:

a first selection part for calculating integral value of the biological metabolite concentration of the subject during execution of the task, and selecting biophotonic measurement data giving such an integral value not lower than a predetermined value, and

an emphasized display processing part for displaying result data based on the selected biophotonic measurement data with emphasis.

12. The biophotonic measurement device according to claim 1, which further comprises:

a second selection part for selecting an arbitrary measurement point and selecting biophotonic measurement data of the measurement point, and

an emphasized display processing part for displaying result data based on the selected biophotonic measurement data with emphasis.

13. The biophotonic measurement device according to claim 1, which further comprises:

a result data storage which stores at least one or more of display screens displaying the result data at an arbitrary time point, and

a play back part which plays back a display screen stored in the result data storage part.

14. A method for operating a biophotonic measurement device comprising the step of generating result data indicating distribution of biological metabolite concentration in a subject by using biophotonic measurement data obtained with a biophotonic measurement device comprising an irradiation and measurement part for irradiating near-infrared light on a measurement site of a subject, measuring transmitted light intensities of the near-infrared light at a plurality of measurement points of the subject, and outputting signals corresponding to the transmitted light intensities at the measurement points as the biophotonic measurement data of the measurement points, which comprises:

the step of setting an arbitrary extraction condition for the biophotonic measurement data,

the step of judging whether the set extraction condition is satisfied or not, and performing extraction of the biophotonic measurement data on the basis of results of the judgment, and

the step of distinguishably displaying the result data on the basis of whether the extraction condition is satisfied or not.

15. A method for analyzing and displaying biophotonic measurement data, which comprises:

the step of reading biophotonic measurement data of a subject,

the step of generating result data indicating distribution of biological metabolite concentration in the subject by using the biophotonic measurement data,

the step of setting an arbitrary extraction condition for the biophotonic measurement data,

the step of judging whether the set extraction condition is satisfied or not, and performing extraction of the biophotonic measurement data on the basis of result of the judgment, and

the step of distinguishably displaying the result data on the basis of whether the extraction condition is satisfied or not.