Medical apparatus and instruments, namely, medical syringes; medical fluid injectors; medical fluid injectors sold empty; medical tubes, namely, extension tubes for injecting contrast fluids for magnetic resonance imaging (MRI) procedures, positron emission tomography (PET) procedures, computed tomography (CT) procedures, angiographic procedures and x-rays; [ medical needles; ] displays, monitors and controllers for medical fluid injectors, namely, computer displays and computer monitors and control panels therefor used for monitoring and controlling injections of contrast fluids during magnetic resonance imaging (MRI) procedures, positron emission tomography (PET) procedures, computed tomography (CT) procedures, angiographic procedures and x-rays; computer displays and computer monitors and controllers therefor used in direct association with medical diagnosis apparatus during the process of diagnosis of a condition in an individual; displays, monitors and controllers for medical fluid injectors, namely, computer displays and computer monitors and controllers therefor used in direct association with medical fluid injectors