I don't think radiologists can examine and report on thousands of images. Have you seen a radiology report? It's a detailed 1-2 page writeup of findings. I am sure they have software that may autocomplete some stuff, or they dictate the findings to someone else. Still, the math doesn't check out.
Radiologist here. A chest abdomen pelvis cat scan I routinely read as about 500 axial images at 2.5 mm slices. Then there is a comparison or two or more. Then there are different phases of contrast for the liver, kidneys. Then there are coronal and Sagittal reconstructions. I easily look at an average of 2000 images per patient.
Voice recognition software autocomplete is about as good as your phone's autocorrect...
