A method for treating a target tissue in a patient in need thereof is provided. The method includes the steps of identifying one or more characteristics of one or more cells of a target tissue calculating a threshold electric field for inducing IRE in the target tissue based on the one or more characteristics constructing a treatment protocol of one or more pulse parameters, wherein the treatment protocol is capable of inducing IRE in the target tissue and delivering the treatment protocol to the target tissue. Systems for treatment planning for medical therapies involving administering electrical treatment energy are also provided.