Radiation Dose Optimisation of Cardiac and Vascular MDCT in Adults and Paediatric Patients

Paul, Jean François; Keyzer, Caroline; Williams, Michelle C.; Tack, Denis

doi:10.1007/174_2011_509

Cited by 1 publication

(1 citation statement)

References 93 publications

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“…The potential drawback of thick-section reconstruction is reduction in contrast-to-noise ratio due to volume averaging along the z-axis. In practice, CT angiography requires thin (usually 1-1.5-mm) sections to achieve satisfactory z-axis resolution (10).…”

Section: Ct Radiation Dose Metricsmentioning

confidence: 99%

Dose Reduction in Cardiothoracic CT: Review of Currently Available Methods

Litmanovich¹,

Tack²,

Shahrzad³

et al. 2014

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Radiation exposure from computed tomography (CT) has received much attention lately in the medical literature and the media, given the relatively high radiation dose that characterizes a CT examination. Although there are a variety of possible strategies for reducing radiation exposure from CT in an individual patient, optimal CT image acquisition requires that the radiologist understand new scanner technology and how to implement the most effective means of dose reduction while maintaining image quality. The authors describe a practical approach to dose reduction in cardiothoracic radiology, discussing CT radiation dose metrics (eg, CT dose index, dose-length product, effective diameter, and size-specific dose estimate) as well as CT scanner parameters that directly or indirectly influence radiation dose (eg, scan length, x-ray tube output, tube current modulation, pitch, image reconstruction techniques [including iterative reconstruction], and noise reduction). These variables are discussed in terms of their relative importance to image quality and the implications of parametric changes for image quality and diagnostic content, and practical recommendations are made for their immediate implementation in the clinical setting. Taken together, the principles of physics and key parameters involved in reducing radiation dose while maintaining image quality can serve as a "survival guide" for a diagnostic radiology practice.

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Section: Ct Radiation Dose Metricsmentioning

confidence: 99%