Air gap technique for digital subtraction angiography of the extracranial carotid arteries
| Autor: | Richard A. Mintzer, Carolyn S. Johnson, Lee Sider, Tatyana R. Lubbat, Steven J. Perlman, Monty P. Karoll, Pei-Jan Paul Lin |
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| Rok vydání: | 1985 |
| Předmět: |
Male
medicine.diagnostic_test business.industry Image quality Carotid arteries Detector General Medicine Stray radiation Digital subtraction angiography Middle Aged Radiation Dosage Cerebral Angiography Carotid Arteries Subtraction Technique medicine Humans Scattering Radiation Radiology Nuclear Medicine and imaging Air gap (plumbing) Nuclear medicine business Image resolution Antiscatter grid |
| Zdroj: | Investigative radiology. 20(7) |
| ISSN: | 0020-9996 |
| Popis: | The technique of applying an air gap between the patient and the x-ray detector reduces scattered radiation from the patient's neck sufficiently to allow performance of DSA of the extracranial carotid arteries with the antiscatter grid removed. When compared with the conventional grid technique, air gap allows 25 to 88% reduction of mA without increasing the kVp or exposure time and without loss of spatial resolution or diagnostic image quality. These considerable patient radiation-exposure savings can be implemented on DSA systems that use ordinary under-table x-ray tube fluoroscopic equipment without the purchase of additional hardware. |
| Databáze: | OpenAIRE |
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