Negotiated Procedure Pursuant To Art. 50 Of The Legislative Decree. N. 36/2023 For The Supply Of Accessories For The Canon Aplio I900 Ultrasound System Supplied To The U.O.C. Diagnostic Imaging And For The Arietta 750 Ultrasound System Supplied To The Minimally Invasive And Obesity Surgery Operating Complex Of The A.O.U. "Luigi Vanvitelli".