The aim of this study was to compare the radiation dose to patients during coronary
angiography (CA) and coronary intervention [percutaneous transluminal coronary angioplasty
(PTCA)] by the femoral or radial artery access routes. A plane-parallel ionisation
chamber, mounted on an undercouch X-ray tube (Siemens Coroskop TOP with an optional
dose reduction system), recorded the dose–area product (DAP) to the patient from 40
coronary angiographies and 42 coronary interventions by the femoral route. The corresponding
numbers for radial access were 36 and 24, respectively. Using a human-shaped phantom,
conversion factors between maximum entrance surface dose and DAP were derived for
CA and CA plus PTCA, respectively. The dose to the staff was measured with TL dosimeters
for 22 examinations. Fluoroscopy time and DAP were significantly (P=.003) larger using the radial access route for CA (7.5 min, 51 Gy cm2) than the corresponding values obtained from femoral access route (4.6 min, 38 Gy
cm2). For CA plus PTCA, the fluoroscopy time and DAP were larger for radial access (18.4
min, 75 Gy cm2) than for femoral access (12.5 min, 41 Gy cm2; P=.013). In our experience, radial access did significantly prolong the fluoroscopy
time and increase the patient doses.
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Publication history
Published online: August 19, 2004
Eur Radiol 2004;14:653–658Identification
Copyright
© 2004 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
