Abstract: Provided in the present application is a method for identifying an interventional object, including acquiring volumetric data regarding a subject to be scanned, and generating a first volumetric image on the basis of the volumetric data, acquiring position information of the interventional object relative to the subject to be scanned, determining a second volumetric image on the basis of the position information, the second volumetric image having a range smaller than the first volumetric image, and identifying the interventional object in the second volumetric image. Further provided in the present application are an imaging system and a non-transitory computer-readable medium.