Abstract
The need for reproducible positioning of an intravascular ultrasound catheter tip before and after intervention in relation to the angiographic records, resulted in the development of a dedicated displacement sensing device that provides instantaneous information about the catheter tip position on the videoscreen. The relative distance information can be displayed together with the ultrasound image. The accuracy of this device was tested in vitro.
Intravascular ultrasound images were recorded in 16 pressurized arterial specimens (8 iliac and 8 coronaries) affected by atherosclerosis. From each specimen the free lumen area from 3 pull-back series was determined over a mean distance of 1.85 cm with increments of 0.05 cm. A total of 1,895 cross-sections were analyzed. The variations in free lumen area were very small: 1.7% in iliac and 3.0% in coronary arteries. The cross-correlation in 15 arteries showed no position mismatching. In only one pull-back obtained in a coronary artery was a position shift of 0.05 cm seen.
In conclusion, the displacement sensing device provides accurate reproducible images. Further application of this device in vitro and in vivo in humans before and after balloon angioplasty has shown that the device is a unique tool to accurately compare intravascular ultrasound images before and after intervention and to compare these images with its histologic or angiographic counterpart.
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© 1993 Springer Science+Business Media Dordrecht
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Gussenhoven, E.J. et al. (1993). Displacement Sensing Device Enabling Accurate Documentation of Catheter Tip Position. In: Roelandt, J., Gussenhoven, E.J., Bom, N. (eds) Intravascular Ultrasound. Developments in Cardiovascular Medicine, vol 143. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8210-0_11
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DOI: https://doi.org/10.1007/978-94-015-8210-0_11
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-4281-1
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