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Research Article
Erratum Notice
Important: There has been an erratum issued for this article. View Erratum Notice
Retraction Notice
The article Assisted Selection of Biomarkers by Linear Discriminant Analysis Effect Size (LEfSe) in Microbiome Data (10.3791/61715) has been retracted by the journal upon the authors' request due to a conflict regarding the data and methodology. View Retraction Notice
This video demonstrates phase contrast magnetic resonance imaging (PC-MRI) to measure blood flow in the common carotid artery of a rat. After securing an anesthetized rat on the MRI bed and ensuring stable physiological parameters, the common carotid artery is scanned to capture images at defined intervals. Blood flow is then computed from these images to evaluate changes throughout the cardiac cycle.
Toutes les procédures impliquant des modèles animaux ont été examinées par le comité institutionnel local de protection des animaux et le conseil d’examen vétérinaire JoVE.
1. Préparation et surveillance des animaux
2. Acquisition par IRM

Figure 1: Animal monitoring. (a) ECG electrodes are placed on the right forepaw and the left hind paw, and the respiratory pillow sensor is placed under the animal's torso. (b) The ECG and respiratory signals are clearly visible on the monitor.

Figure 2: Illustration of the position of PC-MRI scans and representative images. (a) Slice positioning on the reconstructed sagittal and coronal views from the TOF angiogram. The blue line indicates an image plane at the level of the midpoint of the CCA. (b) Magnitude and phase images from one timeframe of the cine-series images from a representative animal. Red arrows indicate CCA location.
| 7T small animal MRI system | Bruker | ||
| Isoflurane | Baxter | 1001936040 | Anesthetic |
| ECG lead | 3M | 2269T | |
| Monitoring and gating system | SA instruments, Inc | Model 1030 |