Detection of coronary artery anomalies by dual-source CT coronary angiography

Cheng, Zhaoping; Wang, X.; Duan, Yi‐Shi; Wu, Lijian; Wu, Dawei; Liang, Changhu; Liu, C.; Xu, Zuowei

doi:10.1016/j.crad.2010.06.003

Cited by 29 publications

(22 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It has been shown that CTA is superior to catheter angiography for the assessment of coronary artery anomalies allowing for a specific diagnosis of coronary anomalies in almost twice as many cases [3,22]. Nevertheless, cardiac catheterization is still frequently performed for the evaluation of coronary anatomy in children.…”

Section: Discussionmentioning

confidence: 99%

ECG-Synchronized CT Angiography in 324 Consecutive Pediatric Patients: Spectrum of Indications and Trends in Radiation Dose

et al. 2014

View full text Add to dashboard Cite

The aim of the study is to describe the spectrum of indications for pediatric ECG-synchronized CT angiography (CTA), the main determinants of radiation exposure, and trends in radiation dose over time at a single, tertiary referral center. The study was IRB approved and HIPAA compliant with informed consent waived. Between 2005 and 2013, 324 pediatric patients underwent ECG-synchronized CTA to evaluate known or suspected cardiovascular abnormalities (109 female, median age 8.1 years). The effective dose (ED) was calculated using age-specific correction factors. Univariate and multivariate regression analyses were performed to identify predictors of radiation dose. The most common primary indications for the CTA examinations included known or suspected coronary pathologies (n = 166), complex congenital heart disease (n = 73), and aortic pathologies (n = 41). Median radiation exposure decreased from 12 mSv for patients examined in the years 2005-2007 to 1.2 mSv for patients examined in the years 2011-2013 (p < 0.001). Patients scanned using a tube potential of 80 kV (n = 259) had a significantly lower median radiation dose (1.4 mSv) compared to patients who were scanned at 100 kV (n = 46, median 6.3 mSv) or 120 kV (n = 19, median 19 mSv, p < 0.001). Tube voltage, followed by tube current and the method of ECG-synchronization were the strongest independent predictors of radiation dose. Growing experience with dose-saving techniques and CTA protocols tailored to the pediatric population have led to a tenfold reduction in radiation dose over recent years and now allow routinely performing ECG-synchronized CTA in children with a radiation dose on the order of 1 mSv.

show abstract

Section: Discussionmentioning

confidence: 99%

ECG-Synchronized CT Angiography in 324 Consecutive Pediatric Patients: Spectrum of Indications and Trends in Radiation Dose

et al. 2014

View full text Add to dashboard Cite

show abstract

“…14 One of the currently accepted ''gold standards'' for diagnosing CAA is the coronary CT angiography (coronary CTA). 15 However, this method depends on the administration of intravascular contrast, which is associated with a ,2% and up to 25% risk (in general population and high-risk patients, respectively) of contrast-induced acute kidney injury 16 and allergic reactions, including anaphylaxis.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis of anomalous origin and course of coronary arteries using non-contrast cardiac CT scan and detection features

Jappar

Chua

Htoo

et al. 2012

Journal of Cardiovascular Computed Tomography

View full text Add to dashboard Cite

“…Contrast-enhanced CT is recommended for coronary artery visualisation [61,62]. The origin and proximal course of the coronary arteries can, in most cases, be visualised by MRI.…”

Section: Coronary Artery Anomaliesmentioning

confidence: 99%

Imaging congenital heart disease in adults

Kilner¹

2011

BJR

View full text Add to dashboard Cite

ABSTRACT. Transthoracic echocardiography is the first-line modality for cardiovascular imaging in adults with congenital heart disease (ACHD). The windows of access that are possible with transthoracic echocardiography are, however, rarely adequate for all regions of interest. The choice of further imaging depends on the clinical questions that remain to be addressed. The strengths of MRI include comprehensive access and coverage, providing imaging of all parts of the right ventricle, the pulmonary arteries, pulmonary veins and aorta. Cine images and velocity maps are acquired in specifically aligned planes, with stacks of cines or dynamic contrast angiography providing more comprehensive coverage. Tissues can be characterised if necessary, and MRI provides relatively accurate measurements of biventricular function and volume flow. These parameters are important in the assessment and follow-up of adults after repairs for tetralogy of Fallot or transposition of the great arteries and after Fontan operations. The superior spatial resolution and rapid acquisition of CT are invaluable in selected situations, including the visualisation of anomalous coronary or aortopulmonary collateral arteries, the assessment of luminal patency after stenting and imaging in patients with pacemakers. Ionising radiation is, however, a concern in younger patients who may need repeated investigation. Adults with relatively complex conditions should ideally be imaged in a specialist ACHD centre, where dedicated echocardiographic and cardiovascular MRI services are a necessary facility. General radiologists should be aware of the nature and pathophysiology of congenital heart disease, and should be alert for previously undiagnosed cases presenting in adulthood, including cases of atrial septal defect, aortic coarctation, patent ductus arteriosus, double-chambered right ventricle and congenitally corrected transposition.

show abstract

Detection of coronary artery anomalies by dual-source CT coronary angiography

Cited by 29 publications

References 30 publications

ECG-Synchronized CT Angiography in 324 Consecutive Pediatric Patients: Spectrum of Indications and Trends in Radiation Dose

ECG-Synchronized CT Angiography in 324 Consecutive Pediatric Patients: Spectrum of Indications and Trends in Radiation Dose

Diagnosis of anomalous origin and course of coronary arteries using non-contrast cardiac CT scan and detection features

Imaging congenital heart disease in adults

Contact Info

Product

Resources

About