Intravascular ultrasound palpography is a new imaging technique that allows visualization of the deformation of atherosclerotic plaques. The technique is based on principle of elastography that the strain as response of tissue to a mechanical force is dependent on its mechanical properties. Several techniques had been investigated (van der Steen 1998) to strain the vessel wall. Leaving the mechanical deformation to the intravascular pressure, which is reproducible, is occurring about sixty times per minute and is for free, seemed to be a reasonable idea.