Radiation Exposure during Cardiac CT: Effective Doses at Multi–Detector Row CT and Electron-Beam CT

Hunold, Peter; Vogt, Florian; Schmermund, Axel; Debatin, Jörg F.; Kerkhoff, Gert; Budde, Thomas; Erbel, Raimund; Ewen, K.; Barkhausen, Jörg

doi:10.1148/radiol.2261011365

Cited by 373 publications

(210 citation statements)

References 48 publications

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“…48 This value is approximately two to three times the patient dose during a diagnostic coronary angiogram. 48,49 Techniques have been developed to reduce the radiation dose with newer generation scanners, such as limiting x-ray emission during certain phases of image acquisition. 48 …”

Section: Artifacts and Limitationsmentioning

confidence: 99%

Noninvasive Cardiac Imaging with Computed Tomography

Wilson¹,

Gopalakrishnan

Tak³

2007

Clinical Medicine & Research

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Despite major improvements in the treatment of heart disease, it remains a major source of morbidity and mortality on a global scale. Currently, invasive coronary angiography remains the gold standard for identification of obstructive coronary artery disease. However, recent advances in computerized tomographic (CT) techniques of the heart allow for accurate, non-invasive characterization of atherosclerotic coronary disease and other cardiac abnormalities. The calculation of coronary artery calcium scores with electron beam CT has largely been supplanted by high-resolution CT angiography using multi-slice detectors (MSCT) which can provide detailed multidimensional visualization of cardiac structures. Although evaluation of obstructive coronary disease is the primary use of MSCT, its use in identifying congenital defects, planning thoracic procedures and characterizing cardiac function continues to grow. Accordingly, appropriate incorporation of MSCT/CT angiography into clinical practice continues to be defined. Several limitations to MSCT remain which reduce its accuracy, such as in patients with arrhythmia and in patients with either coronary stents or heavily calcified coronaries. Despite its current limitations, MSCT remains a rapidly advancing field and an increasingly valuable tool for the non-invasive evaluation of cardiac pathology.

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Section: Artifacts and Limitationsmentioning

confidence: 99%

Noninvasive Cardiac Imaging with Computed Tomography

Wilson¹,

Gopalakrishnan

Tak³

2007

Clinical Medicine & Research

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“…of typical doses encountered with CTCA have been reported 5 , including two recent reports estimating radiation dose in populations of patients under clinical practice conditions 6, 7 , there is little data addressing organ dose 8,9 and no data on the relationship between radiation dose and cancer risk in actual patients undergoing clinical CTCA examinations.…”

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confidence: 99%

Radiation dose and cancer risk estimates in 16-slice computed tomography coronary angiography

Einstein

Sanz

Dellegrottaglie

et al. 2008

Journal of Nuclear Cardiology

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“…CTA is still associated with exposure to a considerable amount of radiation dose, and thus the indications for performing CTA have to be clearly defined. 19,20 The results of this study and other single-centre studies need to be confirmed by multi-centre trials.…”

Section: Study Limitationsmentioning

confidence: 61%

Diagnostic value of the 16‐detector row multislice spiral computed tomography for the detection of coronary artery stenosis in comparison to invasive coronary angiography

Deetjen

Conradi

Möllmann

et al. 2007

Clinical Cardiology

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SummaryObjectives: The aim of this study was to determine the diagnostic accuracy of 16-slice multislice spiral computed tomography (MSCT) of the coronaries and to provide data in a real clinical setting. Previous 16-slice MSCT studies presented data excluding patients with calcification, vessels of <1.5 or 2 mm, and segments with impaired image quality. By including these data for 16-slice MSCT, a direct comparison with new data from 64-slice MSCT is possible.Methods and results: Sixty two patients with suspected or known coronary artery disease (CAD) were prospectively enrolled and underwent computed tomography angiography (CTA) and invasive coronary angiography (ICA). All vessels were evaluated for the presence of a significant coronary artery stenosis (>50%) using the American Heart Association (AHA) 15-segment model. From the evaluation of 917 segments, sensitivity, specificity, and positive and negative predictive value (NPV) (positive predictive value [PPV] and NPV) for the presence of relevant coronary stenosis were 73, 98, and 71 and 98% per segment and 94, 90, and 91 and 93% per patient, respectively. The influence of age, gender, body surface area (BSA), heart rate (HR), stents, and Ca 2+ -score value was analyzed. High Ca 2+ -score values were the only statistically significant predictor for impaired diagnostic accuracy.Conclusions: In summary, CTA with evaluation of all vessel segments in a broad spectrum of patients allowed accurate and fast noninvasive coronary artery evaluation, including evaluation of stented segments. These data are very similar to those published recently for 64-slice scanners.

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Radiation Exposure during Cardiac CT: Effective Doses at Multi–Detector Row CT and Electron-Beam CT

Abstract: Higher radiation doses are delivered at multi-detector row cardiac CT compared with the doses delivered at electron-beam CT and catheter coronary angiography.

Cited by 373 publications

References 48 publications

Noninvasive Cardiac Imaging with Computed Tomography

Noninvasive Cardiac Imaging with Computed Tomography

Radiation dose and cancer risk estimates in 16-slice computed tomography coronary angiography

Diagnostic value of the 16‐detector row multislice spiral computed tomography for the detection of coronary artery stenosis in comparison to invasive coronary angiography

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