The 4V1 features Hanafy Lens probe technology, which provides uniformly narrow image slice thickness for superb resolution in the elevation plane.
The 4V1 2.0-4.5 MHz High-Resolution Vector Array Probe for the Acuson Aspen / 128XP-10 / Sequoia
For Abdominal, Fetal Echo, Ob/Gyn, Pelvis and Renal Applications