Abstract
Background/Aims: In this study, the different types of arterial diameter measurement methods were com-pared with each other on rat model. Methods: The study was planned in three phases. In phase 1, all subjects (n = 30) underwent high resolution B-mode ultrasound examination and external diameter of the right com-mon carotid artery (RCCA) was measured. In phase 2, RCCA was explored. In phase 3, rats were put into three groups. Group 1 was kept at -20oC, group 2 was embedded in 4% formaldehyde solution. In group 3, circulatory system was filled with %20 latex solution. In all groups, digital image of the RCCA was taken after the processes mentioned above. Images were assessed by Image – Pro Plus software. Results: The greatest average diameter was observed in the high resolution B-mode ultrasound (phase 1). In group 1 and 2, direct measurement of the RCCA on living animal (phase 2) gave significantly wider diameter than those obtained at phase 3 in the same groups. Direct (phase 2) and latex (phase 3) measurements were equal in group 3. Conclusion: High resolution B-mode ultrasound gives larger, probably actual diameter of the artery. Latex injection results might correspond those encountered during operation.
Highlights
When diameter of any artery is in concern, referring to textbooks and literature mostly reveals different values [1,2,3]
Digital image of the right common carotid artery (RCCA) was taken after the processes mentioned above
In group 1 and 2, direct measurement of the RCCA on living animal gave significantly wider diameter than those obtained at phase 3 in the same groups
Summary
When diameter of any artery is in concern, referring to textbooks and literature mostly reveals different values [1,2,3]. With keeping characteristics of the measured population (i.e. in this study rats’ weight, age, and sex) constant, invasive procedures in both living subject and cadaver were compared with non-invasive method, which was high resolution B-mode ultrasound. It is a common and practical method to evaluate arterial diameter in vivo [6]. In this study accuracy high resolution B-mode ultrasound was compared with invasive measurements in both living and dead form of the same subject. As far as we concern, there is no other study using this type of methodology
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