The results are already available after the operation of the negative ultrasound is done, but clinically, it may take longer than that to get the textual results directly. After the patient comes out of the ultrasound room, it takes about half an hour or an hour for the paper results to be available. The main reason is that during the process of doing the ultrasound, the results are recorded on the machine when the doctor is operating, and the mechanical results need to be reviewed by human beings. In the process of review, there are many patients doing ultrasound, and after each person’s result comes out, the doctor needs to do a re-evaluation of the data and images, so the time will be relatively long. When there are more patients, this time accumulation will also increase significantly. The time for patients to wait for the results after the procedure may be about half an hour in some hospitals, or longer in others, up to an hour or so, before a paper result is finally available.