vivo 4dDecrease quantity for OS- Ai Vivo 4D + 2D Increase quantity for OS- Ai Vivo 4D + 2D. Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policyIn vivo 4D MIOCT imaging revealed sub-surface pathologic structures and instrument-induced lesions that were invisible through the operating microscope during standard surgical