Digital imaging encompasses digital video with much crossover of technology and terms.
There are many types of VTR including...
An electrical signal which represents a picture; as opposed to television - a modulated radio signal which represents a picture.
A video standard describes the details of the basic electrical signal that passes along local cables. A television standard is an extended video standard containing details of a method by which video signals and accompanying sound can be transmitted by radio and other long-distance communication methods.