1. Kruger RA, Mistretta CA, Houk TL, et al (1979). Computerized tomography in real time for non-invasive visualization of the cardiovascular system. Radiology 130: 49–57.
2. Brennecke R, Brown TK, Bursch J et al (1977). Computerized video-image processing with application to cardioangiographic roentgen image series. (In) Digital Image Processing, (Nagel HH, ed), Springer, New York, p 244.
3. Strother CM, Sackett JF, Crummy AB, et al (1980). Clinical applications of computerized fluoroscopy. The extracranial carotid artery. Radiology 136: 781–783.
4. Ovitt TW, Christensen PC, Fisher HD, et al (1980). Intravenous angiography using digital video subtraction: X-ray imaging system. AJNR 1: 387–390.
5. Meaney TF, Weinstein MA, Buonocore E, et al (1980). Digital sub-traction angiography of the human cardiovascular system. SPIE 233: 272–278.