Detection of encephalopathy
First Claim
1. A method for detecting a case of encephalopathy, the method comprising the steps of:
- obtaining EEG signal data from a patient;
deriving a first signal component from the EEG signal data, wherein the first signal component represents a first frequency band of the EEG signal data, the first frequency band including low frequencies of the EEG signal data;
computing a first parameter indicative of disorder in the first signal component and a second parameter indicative of disorder in signal data representing a second frequency band of the EEG signal data, the second frequency band including higher frequencies than the first frequency band; and
determining an indicator of encephalopathy based on the first parameter and the second parameter, the indicator of encephalopathy being indicative of encephalopathy.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to detection of encephalopathy based on EEG signal data obtained from a patient. A first signal component is derived from the EEG signal data, the first signal component representing low frequencies of the EEG signal data. A first parameter indicative of disorder in the first signal component and a second parameter indicative of disorder in EEG signal data representing a first frequency band are then computed, wherein the first frequency band includes higher frequencies than said low frequencies. An indicator of encephalopathy is then determined based on the first parameter and the second parameter, the indicator of encephalopathy being indicative of encephalopathy.
13 Citations
42 Claims
-
1. A method for detecting a case of encephalopathy, the method comprising the steps of:
-
obtaining EEG signal data from a patient; deriving a first signal component from the EEG signal data, wherein the first signal component represents a first frequency band of the EEG signal data, the first frequency band including low frequencies of the EEG signal data; computing a first parameter indicative of disorder in the first signal component and a second parameter indicative of disorder in signal data representing a second frequency band of the EEG signal data, the second frequency band including higher frequencies than the first frequency band; and determining an indicator of encephalopathy based on the first parameter and the second parameter, the indicator of encephalopathy being indicative of encephalopathy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. An arrangement for detecting a case of encephalopathy, the arrangement comprising:
-
measurement means for obtaining EEG signal data from a patient; first means for deriving a first signal component from the EEG signal data, wherein the first signal component represents a first frequency band of the EEG signal data, the first frequency band including low frequencies of the EEG signal data; computing means for computing a first parameter indicative of disorder in the first signal component and a second parameter indicative of disorder in signal data representing a second frequency band of the EEG signal data, the second frequency band including higher frequencies than the first frequency band; and determination means for determining an indicator of encephalopathy based on the first parameter and the second parameter, the indicator of encephalopathy being indicative of encephalopathy. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
-
39. A method for assisting a physician, the method comprising the steps of:
-
obtaining EEG signal data from a patient; deriving a first signal component from the EEG signal data, wherein the first signal component represents a first frequency band of the EEG signal data, the first frequency band including low frequencies of the EEG signal data; computing a first parameter indicative of disorder in the first signal component and a second parameter indicative of disorder in signal data representing a second frequency band of the EEG signal data, the second frequency band including higher frequencies than the first frequency band; determining an indicator of encephalopathy based on the first parameter and the second parameter, the indicator of encephalopathy being indicative of encephalopathy; and in response to the determining step, compiling a treatment recommendation for a physician. - View Dependent Claims (40)
-
-
41. An arrangement for detecting a case of encephalopathy, the arrangement comprising:
-
a measurement device configured to obtain EEG signal data from the patient; a first calculator configured to derive a first signal component from the EEG signal data, wherein the first signal component represents a first frequency band of the EEG signal data, the first frequency band including low frequencies of the EEG signal data; a second calculator configured to calculate a first parameter indicative of disorder in the first signal component and a second parameter indicative of disorder in signal data representing a second frequency band of the EEG signal data, the second frequency band including higher frequencies than the first frequency band; and a third calculator configured to determine an indicator of encephalopathy based on the first parameter and the second parameter, the indicator of encephalopathy being indicative of encephalopathy.
-
-
42. A computer program embodied on a computer-readable medium for detecting a case of encephalopathy, the computer program executing the steps of:
-
deriving a first signal component from EEG signal data measured from a patient, wherein the first signal component represents a first frequency band of the EEG signal data, the first frequency band including low frequencies of the EEG signal data; computing a first parameter indicative of disorder in the first signal component and a second parameter indicative of disorder in signal data representing a second frequency band of the EEG signal data, the second frequency band including higher frequencies than the first frequency band; and determining an indicator of encephalopathy based on the first parameter and the second parameter, the indicator of encephalopathy being indicative of encephalopathy.
-
Specification