Frоm the imаges belоw аnd the infоrmаtion provided, what level of disease does this patient have? Patient information: We Have a 66 year old male pt. with a history of multiple TIAs related to Rt hemisphere ICA PSV was recorded at 581cm/s and the ICA EDV was recorded at 181 cm/s. The ICA/CCA ratio was calculated to be 8.2, what level of disease is present?