Loading an image in den background queue, and assigning it to an image view in the main queue. Is this a good pattern?

gistfile1.m

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{
  UIImage* image = [UIImage imageWithContentsOfFile:...];
         
  dispatch_async(dispatch_get_main_queue(), ^{
    self.targetImageView.image = image;
  });
});