Systems and methods for calculating patient information

A patient information processing system, comprising:

• a recording assembly configured to record electric potentials via a first set of recording electrodes located at a first set of recording locations on and/or within a patient to create a first set of recorded signals;
• a processing unit configured to calculate patient information for a set of target locations within the patient by applying a transfer matrix to the first set of recorded signals, wherein the transfer matrix comprises a characterization of electrical properties of tissue between the first set of recording locations and the set of target locations,
• wherein the recording assembly is further configured to record voltages of the patient at a second set of recording locations and the processing unit is further configured to determine electrical information at the first set of recording locations, and
• wherein the calculated patient information is based on the output of an inverse solution, and the transfer matrix is applied to improve the quality of the calculated patient information;
• and
• a signal generator configured to emit a set of drive signals via a set of drive electrodes located at a set of drive locations,
• wherein the recording assembly is configured to record the emitted drive signals via a second set of recording electrodes located at a second set of recording locations to create a second set of recorded signals, and
• wherein the processing unit is configured to determine the transfer matrix by comparing the second set of recorded signals to the emitted set of drive signals, and
• wherein the drive signals comprise:
• a first drive signal from a first drive electrode at a first frequency;
• and
• a second drive signal from a second drive electrode at a second frequency,
• wherein the first frequency and the second frequency are different.

A patient information processing system, comprising:

• a recording assembly configured to record electric potentials via a first set of recording electrodes located at a first set of recording locations on and/or within a patient to create a first set of recorded signals;
• a processing unit configured to calculate patient information for a set of target locations within the patient by applying a transfer matrix to the first set of recorded signals, wherein the transfer matrix comprises a characterization of electrical properties of tissue between the first set of recording locations and the set of target locations,
• wherein the recording assembly is further configured to record voltages of the patient at a second set of recording locations and the processing unit is further configured to determine electrical information at the first set of recording locations, and
• wherein the calculated patient information is based on the output of an inverse solution, and the transfer matrix is applied to improve the quality of the calculated patient information;
• and
• a signal generator configured to emit a set of drive signals via a set of drive electrodes located at a set of drive locations,
• wherein the recording assembly is configured to record the emitted drive signals via a second set of recording electrodes located at a second set of recording locations to create a second set of recorded signals,
• wherein the processing unit is configured to determine the transfer matrix by comparing the second set of recorded signals to the emitted set of drive signals, and
• wherein the drive signals comprise:
• a first drive signal from a first drive electrode at a first frequency;
• and
• a second drive signal from a second drive electrode at a second frequency,
• wherein the first frequency and the second frequency are delivered sequentially.

A patient information processing system, comprising:

• a recording assembly configured to record electric potentials via a first set of recording electrodes located at a first set of recording locations on and/or within a patient to create a first set of recorded signals;
• a processing unit configured to calculate patient information for a set of target locations within the patient by applying a transfer matrix to the first set of recorded signals, wherein the transfer matrix comprises a characterization of electrical properties of tissue between the first set of recording locations and the set of target locations,
• wherein the recording assembly is further configured to record voltages of the patient at a second set of recording locations and the processing unit is further configured to determine electrical information at the first set of recording locations, and
• wherein the calculated patient information is based on the output of an inverse solution, and the transfer matrix is applied to improve the quality of the calculated patient information;
• and
• a signal generator configured to emit a set of drive signals via a set of drive electrodes located at a set of drive locations,
• wherein the recording assembly is further configured to record the emitted drive signals via a second set of recording electrodes located at a second set of recording locations to create a second set of recorded signals,
• wherein the processing unit is configured to determine the transfer matrix by comparing the second set of recorded signals to the emitted set of drive signals,
• wherein the determining of the transfer matrix comprises calculating and/or selecting a standardized transfer matrix based on a patient parameter, and
• wherein the patient parameter comprises a parameter selected from the group consisting of:
• gender;
• weight;
• height;
• body or body portion size;
• body mass index (BMI);
• thoracic cavity circumference;
• location of the esophagus;
• size of an atrium;
• filling of an atrial volume;
• atrial pressure;
• fat to water ratio;
• air to water to fat ratio;
• bone location;
• medications being taken;
• level of medication;
• electrolyte level;
• pH;
• pO2;
• pCO2;
• water weight;
• and combinations thereof.