A catheter device system may include a plurality of transducers positionable in a bodily cavity defined by at least a tissue wall, each transducer configured to sense a degree of contact between the transducer and the tissue wall. A data processing device system may be configured by a program to receive a plurality of degree-of-contact signals respectively from the plurality of transducers, the signals respectively indicating a degree of contact between the transducer and the tissue wall； identify a particular transducer as belonging to a first transducer set and as exhibiting an improper contact arrangement with the tissue wall as compared to a predetermined tissue-contact state, based at least on an interaction with data associated with at least one of the received degree-of-contact signals； and, consequently, provide an indication of a contact-improvement procedure to facilitate an improved contact arrangement between the particular transducer and the tissue wall.
