Answer:
non invasive and tomographic imaging.
Step-by-step explanation:
MRI and ultrasound have common as diagnostic imaging and techniques are non invasive and tomographic imaging.
non invasive means when there is no break is created in the skin for the treatment where MRI and Ultrasound both uses non invasive technique.
tomographic imaging is imaging of section by penetrating some waves inside the body and get the imaging of the patient body and this type of diagnosis is used in both MRI and Ultrasound.