Evaluation of an algorithm for arterial lumen diameter measurements by means of ultrasound.

Summary, in English

We have developed an algorithm for arterial luminal diameter measurement by means of ultrasound and evaluated the algorithm on agar vessel phantoms and in vivo. The algorithm utilises relative threshold detection on the inner slopes of the arterial walls before the resolution is improved by solving the equation of a straight line between the samples around the threshold value. Further, correction distances added to compensate for the underestimation when using the inner slopes were found to be 304 mum for the near wall and 415 mum for the far wall. The measured mean diameters of ten consecutive images of 3-, 6- and 9-mm phantoms were 3,006 mum (SD 4), 5,918 mum (SD 1) and 8,936 mum (SD 2), respectively. The mean differences between the images were 0.19, 0.04 and 0.37 mum, respectively. In vivo, the intra- and inter-observer variabilities were -64 mum (2SD 358) and -57 mum (2SD 366), respectively.

• Author: Magnus Cinthio; Tomas Jansson; Anders Eriksson; Åsa Rydén Ahlgren; Hans W Persson; Kjell Lindström
• Department/s: Department of Biomedical Engineering; Clinical Physiology and Nuclear Medicine, Malmö
• Publishing year: 2010
• Language: English
• Pages: 1133-1140
• Publication/Series: Medical & Biological Engineering & Computing
• Volume: 48
• Links: http://www.ncbi.nlm.nih.gov/pubmed/20635222?dopt=Abstract; http://dx.doi.org/10.1007/s11517-010-0660-8
• Document type: Journal article
• Publisher: Springer
• Topic: Other Medical Engineering
• Status: Published
• Research group: Clinical Physiology, Malmö
• ISBN/ISSN/Other: ISSN: 0140-0118