An apparatus comprising (i) one or more electrodes capable of interrogating tissue, wherein each of the one or more electrodes emit and receive a radiofrequency signal to generate a bioimpedance signal, wherein the apparatus is configured to obtain a plurality of bioimpedance signals comprising: (a) a bioimpedance signal measured at a target location, and (b) at least two bioimpedance signals measured around the target location; (ii) a circuit electrically coupled to the electrodes and configured to convert each of the plurality of bioimpedance signals into a sub-epidermal moisture (SEM) value, resulting in a plurality of SEM values; (iii) a processor electronically coupled to the circuit and configured to receive the plurality of SEM values; and (iv) a non-transitory computer readable medium electronically coupled to the processor and comprising instructions stored thereon that when executed on the processor, perform the steps of: (a) receiving from the processor the plurality of SEM values and their relative measurement locations (b) determining an average SEM value for each group of SEM values measured at approximately equidistance from the target lo-cation, (c) determining a maximum average SEM value from the average SEM values, (d) determining a difference between the maximum average SEM value and each of the average SEM values measured at and around the target location, and (e) flagging the relative measurement locations associated with a difference greater than a predetermined value as damaged tissue. (i) one or more electrodes capable of interrogating tissue, wherein each of the one or more electrodes emit and receive a radiofrequency signal to generate a bioimpedance signal, wherein the apparatus is configured to obtain a plurality of bioimpedance signals comprising: (a) a bioimpedance signal measured at a target location, and (b) at least two bioimpedance signals measured around the target location; (a) a bioimpedance signal measured at a target location, and (b) at least two bioimpedance signals measured around the target location; (ii) a circuit electrically coupled to the electrodes and configured to convert each of the plurality of bioimpedance signals into a sub-epidermal moisture (SEM) value, resulting in a plurality of SEM values; (iii) a processor electronically coupled to the circuit and configured to receive the plurality of SEM values; and (iv) a non-transitory computer readable medium electronically coupled to the processor and comprising instructions stored thereon that when executed on the processor, perform the steps of: (a) receiving from the processor the plurality of SEM values and their relative measurement locations (b) determining an average SEM value for each group of SEM values measured at approximately equidistance from the target lo-cation, (c) determining a maximum average SEM value from the average SEM values, (d) determining a difference between the maximum average SEM value and each of the average SEM values measured at and around the target location, and (e) flagging the relative measurement locations associated with a difference greater than a predetermined value as damaged tissue. (a) receiving from the processor the plurality of SEM values and their relative measurement locations (b) determining an average SEM value for each group of SEM values measured at approximately equidistance from the target lo-cation, (c) determining a maximum average SEM value from the average SEM values, (d) determining a difference between the maximum average SEM value and each of the average SEM values measured at and around the target location, and (e) flagging the relative measurement locations associated with a difference greater than a predetermined value as damaged tissue. <EOS>