Methods, systems, and treatment probes for delivering heating energy such as acoustic waves to a target tissue volume inside of a patient for medically treating the target tissue volume are disclosed. A method includes inserting a treatment probe into the patient through an exposed skin of the patient, the treatment probe including heating energy dispensing element. The method further includes applying heating energy to the target tissue volume via the dispensing element, the heating energy being applied so as to medically treat the target tissue volume. The method also includes monitoring an amount of energy absorbed by the target tissue as a result of applying the energy, and adjusting the heating energy being applied to the target tissue based on the amount of energy absorbed by the target tissue.
