Aetna considers a single calcium scoring by means of low-dose multi-slice CT angiography, ultrafast [electron-beam] CT, or spiral [helical] CT medically necessary for screening the following: Asymptomatic persons age 40 years and older with diabetes; or Asymptomatic persons with an intermediate (1...
Currently, such measurements are only possible on contrast-enhanced CT scans, which require more radiation plus injection of an X-ray contrast agent that is burdensome20. In contrast, AI-CAC volumetry can be applied to any new or existing non-contrast CAC scan for automated cardiac chamber ...
remains the most common cause of mortality in the United States. Risk assessment is key for primary prevention of coronary events and coronary artery calcium (CAC) scoring using computed tomography (CT) is one such non-invasive tool. Despite the proven clinical value of CAC, the current clinical...
This systematic review and meta-analysis evaluates the incremental value of coronary artery calcium scans beyond traditional cardiovascular risk
Coronary artery disease after radiation therapy for Hodgkin's lymphoma: Coronary CT angiography findings and calcium scores in nine asymptomatic patients. Am. J. Roentgenol. 2008, 191, 32–37. [CrossRef] 9. Brosius, F.C.; Waller, B.F., 3rd; Roberts, W.C. Radiation heart disease. ...
(CAC) as function of average CAC score expressed in Agatston CAC score units; the curve shows 95% repeatability limits which include 98% of differences, n = 2217 (reprinted from ‘Serial electron beam CT measurements of coronary artery calcium: Has your patient’s calcium score actually changed...
CT uses x-rays typically equivalent to the dose needed for about 200 chest radiographs. A single routine CT study in a child increases the lifetime risk of cancer by 0.35% per scan. [20] For adults, the lifetime risk of cancer may be as high as 2% with annual CT screening. Because ...
However, its role in cardio-oncology is primarily restricted to assessment of coronary calcium and CAD [31]. A recent oncology study revealed that the present of CAC on the CT portion of FDG/PET-CT was associated with all-cause mortality and cardiac events on univariable and multivariable ...
Coronary artery calcification burden was assessed by CT scan with ECG gating and the intima-media thickness (IMT) of the carotid arteries by high-resolution ultrasound. Coronary artery calcifications were present in 92% of patients; calcium scores exceeded the 95th age- and sex-specific percentiles...
3D QCA provides only an approximation of the bifurcation carina, whereas coronary CTA is not widely applicable given its non-invasive nature, cardiac and lung motion and calcium blooming artifacts11. In principle, a hybrid (multi-modality) approach could potentially provide a more accurate ...