3D CT cerebral angiography technique using a 320-detector machine with a time-density curve and low contrast medium volume: comparison with fixed time delay technique

Clinical Radiology
K DasS Niven

Abstract

To describe a cerebral computed tomography angiography (CTA) technique using a 320-detector CT machine and a small contrast medium volume (35 ml, 15 ml for test bolus). Also, to compare the quality of these images with that of the images acquired using a larger contrast medium volume (90 or 120 ml) and a fixed time delay (FTD) of 18 s using a 16-detector CT machine. Cerebral CTA images were acquired using a 320-detector machine by synchronizing the scanning time with the time of peak enhancement as determined from the time-density curve (TDC) using a test bolus dose. The quality of CTA images acquired using this technique was compared with that obtained using a FTD of 18 s (by 16-detector CT), retrospectively. Average densities in four different intracranial arteries, overall opacification of arteries, and the degree of venous contamination were graded and compared. Thirty-eight patients were scanned using the TDC technique and 40 patients using the FTD technique. The arterial densities achieved by the TDC technique were higher (significant for supraclinoid and basilar arteries, p < 0.05). The proportion of images deemed as having "good" arterial opacification was 95% for TDC and 90% for FTD. The degree of venous contamination ...Continue Reading

References

Nov 18, 2004·AJR. American Journal of Roentgenology·Tadhg G Gleeson, Sudi Bulugahapitiya
Oct 20, 2006·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Michael M LellBernd F Tomandl
Feb 18, 2009·The British Journal of Radiology·E SiebertR Klingebiel
Feb 24, 2011·AJR. American Journal of Roentgenology·Markus WeiningerU Joseph Schoepf
Jan 10, 2012·European Journal of Radiology·E SorantinR Fotter

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