Abstract: The medical diagnostic system comprises a deep neural network model trained with catheter hardness data, lesion hardness data, and operation time to complete catheter treatment; an irradiation energy emitting device to calculate irradiation energy of a patient; a control unit to identify a plurality of lesions from irradiation energy data; and a catheter to insert into an artery in the patient's arm, wherein the catheter tip is positioned to at least the patient's aortailiac bifurcation, wherein a therapeutic catheter is introduced into a catheter lumen and the therapeutic catheter tip is projected from the catheter tip thereby the harder lesion is initially treated, and the therapeutic catheter tip of the therapeutic catheter is projected from the catheter tip to treat the softer lesion.