Computer imaging is about improving communication between the patient and their surgeon as to goals and expectations. The type of imaging is not important, whether it is achieving these goals is. If you would feel more comfortable with 3D imaging than by all means you should do it. But remember that imaging does not mean that is how the surgery will turn out. It is a goal but not a guaranteed result.
No imaging before a rhinoplasty will guarantee what your result will be. The way your actual nose and tissue is manipulated is very different than manipulating a photo. Does your surgeon guarantee your nose will be like the photo created? Make sure to have an open and honest discussion with your surgeon. It is helpful to have a discussion and review photos of the result you desire, however you and your surgeon still need to deal with and discuss your unique characteristics. Best wishes,Dr. Peterson