ArticleRadiological physics and technology2026
Differences in blood flow velocity measurements between 4D-flow MRI and doppler US in rat carotid arteries.
Article in Radiological physics and technology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
Abstract
The purpose of this study was to compare flow velocity parameters in rat carotid arteries between 7-T 4D-flow magnetic resonance imaging (MRI) and Doppler US. We evaluated differences in six parameters: peak and mean velocities during systole and diastole, pulsatility index (PI), and resistance index (RI). Images of rat carotid arteries were acquired using 7-T MRI and a 7–18 MHz linear array scanner Doppler US. Measurements were obtained 1 cm from the bifurcations of the common, internal, and external carotid arteries. Data were averaged and compared between modalities using unpaired t-tests. MRI tended to measure lower peak and mean flow velocities than Doppler US, with larger differences at higher velocities. No significant differences in the PI or RI were found between MRI and Doppler US (p < 0.05), except for the RI of the external carotid artery. The bias between modalities was smaller for the mean velocities than for the peak velocities. Across all vessels, systolic velocity showed greater variability than diastolic velocity, and peak velocities varied more than mean velocities. This study provides pre-clinical validation data for 7-T 4D-flow MRI compared with Doppler US, highlighting its potential for translational hemodynamic research.
Indexed as
Identifiers
41729421What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.