What instrument is used to check the whole body?

If an instrument can do a full-body examination, it doesn't exist. First of all, the whole body examination, you must first determine what you define, whether it is a whole body bone examination, a whole body muscle examination or a whole body blood examination. If it is a simple whole body bone examination, PETCT can meet the requirements. But if the whole body examination refers to all the examinations, including bones, muscles, blood, etc., it is impossible to achieve it completely through one instrument. Because they usually check color Doppler ultrasound, CT, MRI and so on, they can only check a certain part of the body, or a certain part. It is impossible for a machine to complete all the projects, so there is no instrument to do the so-called full-body examination at present.