OBJECTIVE: To investigate a modified angioplasty balloon catheter, which uses a novel balloon polymer to produce luminal moulds. DESIGN: The catheter was tested in polyurethane phantoms of diameter 1.5 to 4.0 mm. Inflations were to 1.4 atmospheres for 20 seconds at 37 degrees C. The moulds were viewed by reinflating the balloon to 0. 34 atmospheres and quantified using macrophotography and caliper measurement. RESULTS: Evidence of systematic error was found with lumen diameters </= 2.0 mm, accuracy being 0.32 to 0.80 mm and precision 0.23 to 0.24 mm. However, between 2.5 and 4.0 mm the accuracy of measuring luminal diameters was 0.01 mm, the precision 0. 06 mm, and the absolute mean error 0.05 mm. The results for percentage diameter stenosis were -1.15%, 0.86%, and 1.21%, and for lesion length they were 0.20, 0.60, and 0.41 mm, respectively. CONCLUSIONS: The prototype catheter shows a high degree of accuracy and precision in phantoms of diameter 2.5 to 4.0 mm-the range within which most interventional work is performed. Further work on this technique as a method of direct three dimensional moulding of the coronary artery lumen is warranted.
OBJECTIVE: To investigate a modified angioplasty balloon catheter, which uses a novel balloon polymer to produce luminal moulds. DESIGN: The catheter was tested in polyurethane phantoms of diameter 1.5 to 4.0 mm. Inflations were to 1.4 atmospheres for 20 seconds at 37 degrees C. The moulds were viewed by reinflating the balloon to 0. 34 atmospheres and quantified using macrophotography and caliper measurement. RESULTS: Evidence of systematic error was found with lumen diameters </= 2.0 mm, accuracy being 0.32 to 0.80 mm and precision 0.23 to 0.24 mm. However, between 2.5 and 4.0 mm the accuracy of measuring luminal diameters was 0.01 mm, the precision 0. 06 mm, and the absolute mean error 0.05 mm. The results for percentage diameter stenosis were -1.15%, 0.86%, and 1.21%, and for lesion length they were 0.20, 0.60, and 0.41 mm, respectively. CONCLUSIONS: The prototype catheter shows a high degree of accuracy and precision in phantoms of diameter 2.5 to 4.0 mm-the range within which most interventional work is performed. Further work on this technique as a method of direct three dimensional moulding of the coronary artery lumen is warranted.
Authors: L Wenguang; W J Gussenhoven; Y Zhong; S H The; C Di Mario; S Madretsma; F van Egmond; P de Feyter; H Pieterman; H van Urk Journal: Int J Card Imaging Date: 1991
Authors: R A Nishimura; W D Edwards; C A Warnes; G S Reeder; D R Holmes; A J Tajik; P G Yock Journal: J Am Coll Cardiol Date: 1990-07 Impact factor: 24.094
Authors: J H Reiber; P W Serruys; C J Kooijman; W Wijns; C J Slager; J J Gerbrands; J C Schuurbiers; A den Boer; P G Hugenholtz Journal: Circulation Date: 1985-02 Impact factor: 29.690
Authors: C Di Mario; C von Birgelen; F Prati; B Soni; W Li; N Bruining; P P de Jaegere; P J de Feyter; P W Serruys; J R Roelandt Journal: Br Heart J Date: 1995-05