Air gap technique for digital subtraction angiography of the extracranial carotid arteries

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Invest. Radiol.; (United States)

DOI:https://doi.org/10.1097/00004424-198510000-00015· OSTI ID:5618620

Karoll, M P; Mintzer, R A; Lin, P J; Sider, L; Johnson, C S; Perlman, S J; Lubbat, T R

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.

• OSTI ID: 5618620
• Journal Information: Invest. Radiol.; (United States), Journal Name: Invest. Radiol.; (United States) Vol. 7; ISSN INVRA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
AIR
ARTERIES
BIOMEDICAL RADIOGRAPHY
BLOOD VESSELS
BODY
CARDIOVASCULAR SYSTEM
CAROTID ARTERIES
DIAGNOSTIC TECHNIQUES
FLUIDS
GASES
MEDICINE
NUCLEAR MEDICINE
ORGANS
PATIENTS
RADIATION PROTECTION
RADIATIONS
RADIOLOGY
STRAY RADIATION