It is incredibly fast compared to conventional C.T. What would take 20 minutes to scan say a Chest and Abdomen takes approximately 20 milliseconds. What is so innovative about the Imatron apart from the time factor is its ability to make its scans virtual. From computer reconstructions you can be a point observer from anywhere within the body. This means that movement of the peristalsis and normal function of the body's systems can be captured and recorded on videotape or videodisc. Angiography and D.S.A. Is the imaging of the body's blood vessels.
Arteries become cloggedand distorted with age and disease.
D.S.A using computer technology subtracts bone and tissue information so that all you can see is the vessels themselves. Having the patient awake under only a local anaesthetic, surgical techniques combined with the aid of D.S.A. can diagnose and repair bad arteries so that interventional surgery is not required in most cases. Techniques such as balloon angioplasty can prevent the need for by-pass surgery and the need for a very interventional general anaesthetic and patients are able to go home in the same day.