The Impact of Novel X-Ray Systems and X-Ray System Optimization on Patient Radiation Dose Administered During Cardiac Catheterization.
J Invasive Cardiol
; 32(6): 218-221, 2020 Jun.
Article
em En
| MEDLINE
| ID: mdl-32385193
ABSTRACT
INTRODUCTION:
The effect of x-ray system optimization on patient radiation dose has received limited study.METHODS:
We analyzed patient radiation dose in 1786 cardiac catheterization procedures (diagnostic coronary angiography and/or percutaneous coronary intervention [PCI]) performed at a single tertiary-care center before and after x-ray system optimization.RESULTS:
After optimization, cineangiography dose-area product (DAP) dose was lower in the overall group of patients who underwent diagnostic angiography and/or PCI (1347 µGyâ¢m² [IQR, 645-2345 µGyâ¢m²] vs 1658 µGyâ¢m² [IQR, 640- 2757 µGyâ¢m²]; P=.03), as well as in the diagnostic angiography group (1795 µGyâ¢m² [IQR, 1140-2994 µGyâ¢m²] vs 2356 µGyâ¢m² [IQR, 311-3576 µGyâ¢m²]; P<.01) and PCI group (2152 µGyâ¢m² [IQR, 1338-3477 µGyâ¢m²] vs 2562 µGyâ¢m² [IQR, 1681-3859 µGyâ¢m²]; P=.02). Cineangiography DAP per exposure was also lower in the overall group (143 µGyâ¢m² [IQR, 91-212 µGyâ¢m²] vs 164 µGyâ¢m² [IQR, 106-233 µGyâ¢m²] per exposure; P<.01) and in the diagnostic angiography group (158 µGyâ¢m² [IQR, 102-225 µGyâ¢m²] vs 184 µGyâ¢m² [IQR, 125-271 µGyâ¢m²] per exposure; P<.01). After optimization, cineangiography air kerma (AK) dose (319 mGy [IQR, 197-531 mGy] vs 421 mGy [IQR, 241-600 mGy]; P=.01) and cineangiography AK per exposure (20.7 mGy [IQR, 12.9-29.0 mGy] vs 23.6 mGy [IQR, 14.1-32.9 mGy] per exposure; P=.03) were also lower in the PCI group. There was no significant change in fluoroscopy AK dose after optimization (20.7 mGy [IQR, 12.7-30.1 mGy] vs 20.4 mGy [IQR, 12.8-31.3 mGy] per minute; P=.71) and fluoroscopy DAP dose (156 µGyâ¢m² [IQR, 101-242 µGyâ¢m²] vs 156 µGyâ¢m² [IQR, 102-236 µGyâ¢m²] per minute; P=.91).CONCLUSION:
X-ray system optimization was associated with lower cineangiography DAP, but similar fluoroscopy radiation dose.Palavras-chave
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Exposição à Radiação
/
Intervenção Coronária Percutânea
Limite:
Humans
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article