Catheter system and methods of medical uses of same, including diagnostic and treatment uses for the heart

A method of operating a catheter system, comprising:

• providing a catheter system comprising:
• a diagnostic catheter comprising:
• an elongate shaft comprising a distal end;
• an expandable assembly mounted to the elongate shaft, the expandable assembly comprising multiple splines and configured to transition from a compacted state to an expanded state;
• a plurality of electrodes coupled to the multiple splines of the expandable assembly, each electrode configured to emit electric signals and receive electric signals;
• and
• a plurality of ultrasound transducers coupled to the multiple splines of the expandable assembly;
• a distance measurement assembly;
• and
• a processing unit;
• driving the plurality of ultrasound transducers to produce anatomical geometry data, including data representing a distance between each ultrasound transducer of the plurality of ultrasound transducers and a tissue surface orthogonal to each ultrasound transducer with the distance measurement assembly;
• receiving electric signals from the plurality of electrodes;
• measuring a spacing between two or more of the electrodes based on the received electric signals with the processing unit;
• determining a geometric configuration of one or more of the multiple splines based on the measured electrode spacing with the processing unit;
• creating a three-dimensional anatomical map based on the produced anatomical geometry data with the processing unit;
• creating electrical information based on the received electric signals with the processing unit;
• and
• displaying the electrical information in relation to the three-dimensional anatomical map with the processing unit,
• wherein at least one of:
• the electrical information is further based on the determined geometric configuration of the one or more of the multiple splines;
• and
• the anatomical geometry data is based on the determined geometric configuration of the one or more of the multiple splines.