Coronary aorto-ostial stenosis analysed by multislice computed tomography: a new tool for percutaneous coronary intervention?

Abstract

This study shows that CT associated with an angiogram allows a better identification of aorto-ostial plaques morphology and ideal stent position in aorto-ostial coronary stenosis before angioplasty.

Coronary CT Angiography in Takayasu Arteritis

“…The patients were sent to MDCT coronary angiography to rule out coronary involvement as a cause of symptoms, because coronary involvement in TA is mainly ostial and MDCT has been demonstrated to be useful in the diagnosis of this kind of lesion (22,23). Among a cohort of 80 patients with TA, we included 18 consecutive patients who presented with dyspnea or angina (typical or atypical) between March 2006 and April 2009.…”

“…Accuracy for stenoses detection is high if image quality is good (12)(13)(14)(15), and because of its high negative predictive value, coronary computed tomographic (CT) angiography is most frequently used to exclude significant coronary stenoses (10,11). Furthermore, MDCT is a reliable tool for the diagnosis and severity assessment of aorto-ostial lesions (22,23). Furthermore, MDCT is a reliable tool for the diagnosis and severity assessment of aorto-ostial lesions (22,23).…”

Controlling the Radiation Dose Received By Patients Undergoing Cardiac Imaging

“…Great improvements in dose reduction have also been achieved for CTCA. With the first 64-slice ECG-gated coronary CT scanners, the effective radiation dose averaged approximately 20 mSv [8,15]. Several techniques to reduce the radiation exposure have been evaluated [3] and include ECG-based tube-current modulation, tube-voltage reduction and attenuation-based tube-current modulation.…”

Optimal fluoroscopic viewing angles for stenting of the coronary aorto-ostial lesions

“…This diagnostic modality offers a unique view into the spatial relationships of different cardiac structures and has been proved to be critical in procedure planning and device selection in structural heart interventions [11][12][13][14]. However, three-dimensional (3D) data provided by MSCT are still rarely used to facilitate percutaneous coronary interventions (PCI) [15,16].…”