Academic radiology · 1997
Measurement of a cross-sectional area of normal and stenotic arteries with videodensitometric quantitative arteriography and intravascular ultrasound.
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Molloi S, Zhang W, Leung C, Hiro T, Hicks J
Аннотация
RATIONALE AND OBJECTIVES: A videodensitometric technique that allows measurement of absolute cross-sectional area of any complex lesion was compared with an intravascular ultrasound (US) technique.
METHODS: Stenotic devices (10-15 mm long) with cross sections of different shapes were placed in the distal aortas of five anesthetized pigs (weight, 40-50 kg). The stenotic devices were imaged by using an intravascular US probe after power injection of contrast material.
RESULTS: A comparison of actual areas and measured cross-sectional areas of the stenotic devices showed that videodensitometry and intravascular US produced better results than edge-detection techniques for both unsubtracted and temporal subtraction images.
CONCLUSION: These data suggest that the videodensitometric technique can be used to measure absolute cross-sectional areas of arteries with different shapes.
METHODS: Stenotic devices (10-15 mm long) with cross sections of different shapes were placed in the distal aortas of five anesthetized pigs (weight, 40-50 kg). The stenotic devices were imaged by using an intravascular US probe after power injection of contrast material.
RESULTS: A comparison of actual areas and measured cross-sectional areas of the stenotic devices showed that videodensitometry and intravascular US produced better results than edge-detection techniques for both unsubtracted and temporal subtraction images.
CONCLUSION: These data suggest that the videodensitometric technique can be used to measure absolute cross-sectional areas of arteries with different shapes.