Reduced radiation dose and volume of contrast medium in heart rate-based, one-stop computed tomography angiography of coronary, carotid and cerebrovascular arteries.
Acta Radiol
; 65(1): 84-90, 2024 Jan.
Article
em En
| MEDLINE
| ID: mdl-37743551
ABSTRACT
BACKGROUND:
Computed tomography angiography (CTA) is a reliable, non-invasive screening method for diagnosing panvascular disease. By using low contrast agent volume, CTA imaging enables one-stop multi-organ scanning, thereby minimizing the potential risk of contrast-induced nephropathy in patients with impaired renal function.PURPOSE:
To evaluate the feasibility of one-stop CTA following a heart rate (HR)-based protocol using a low volume of contrast medium (CM) for examination of the coronary, carotid and cerebrovascular arteries. MATERIAL ANDMETHODS:
Sixty patients undergoing coronary carotid, and cerebrovascular CTA after a single injection of CM were recruited and randomly divided into two groups. Group A (n = 30) underwent CTA following a traditional protocol. The timing of the scans in Group B (n = 30) was determined according to the patient's HR.RESULTS:
The CT values for the thoracic aorta (432.2 ± 104.28â HU), anterior cerebral artery (303.96 ± 99.29â HU), and right coronary artery (366.70 ± 85.10â HU) in Group A did not differ significantly from those in Group B (445.80 ± 106.13, 293.73 ± 75.25 and 344.13 ± 111.04â HU, respectively). The qualities of most of the scanned images for both groups were scored as 3 or 4 (on a five-point scale). The radiation dose and the volume of CM were significantly higher in Group A (303.05 ± 110.95â mGy) (100â mL) than in Group B (239.46 ± 101.12â mGy) (50â mL).CONCLUSION:
The radiation dose and volume of CM were significantly reduced in CTA following the HR-based protocol. The personalized administration of CM also simplified the scanning process.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Meios de Contraste
/
Angiografia por Tomografia Computadorizada
Tipo de estudo:
Guideline
Limite:
Humans
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article