Fluoroscopic imaging system
US5448614A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1994 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Mar 15, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an interventional radiography (IVR), for example in a percutaneous transluminal coronary angioplasty (PTCA), when the IVR includes a period in which the movement of the object is slow, a normal X-ray radiating mode (a continuous X-ray radiation or a normal rate pulse radiation of about 15-30 pulses per second) is changed to a very slow rate pulse X-ray radiation of about 1-5 pulses per second to decrease the X-ray dose of the patient. Since the movement is slow, the very slow rate pulse radiation can still trace the movement adequately. Further, the quality of the X-ray image is improved by increasing the tube current in the very slow rate pulse radiation because less heat is generated in the X-ray tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.