Normal cerebral blood vessels under ultrasound in SD rats of different ages

The objective of this study was to examine whether ultrasound can the development cerebral vascular structure and blood flow in Sprague–Dawley (SD) rats by a noninvasive manner, which provides reference for research SD rats. Thirty-nine (7–16 days old) were divided into seven groups according age, number each group was, respectively, 7, 17, 1, 3, 2, 8, 1. Ultrasound used detect vessels, cerebrovascular velocity, heart rate sagittal coronal positions, images obtained B-mode ultrasound. 39 days) dynamically observed under B-ultrasound. We found that aged 7–10 clear detectable. Rats 11–16 structures became thinner undetectable. Quantitative analysis there no significant difference between 7 8 days. also be rat animal studies, is, different ages monitored real-time way.