A fluid injector for use with at least one syringe has at least one injector head with a front end configured to releasably receive the at least one syringe. The fluid injector further includes at least one pressure jacket releasably associated with the front end of the at least one injector head for securing the at least one syringe during an injection procedure. A connection mechanism releasably connects the at least one pressure jacket to the front end of the at least one injector head. The connection mechanism includes at least one magnet. The at least one injector head has the at least one magnet while the at least one pressure jacket has a ferromagnetic material configured for magnetically interacting with the at least one magnet.
