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Anatomic MRI of the kidney might appear at first glance to be an easy task. However, it is challenged by the competing constraints of scan time, spatial resolution, and image quality. The selection of an appropriate MRI protocol for kidney size quantification is not so much a matter of contr...
This work was undertaken using resources on the Dementias Platform UK (DPUK) Data Portal; the Medical Research Council supports DPUK through grant MR/L023784/2.” The study was supported in part by the French National Agency for Research (“Investissements d’Avenir” no. ANR-11-LABX-0018...
This requires sufficient spectral separation, prior knowledge of the resonances of interest, and correct calibration of the center frequency when planning the scan; for [1-13C]pyruvate, these are relatively easily fulfilled. In this type of experiment, the resonances of pyruvate and metabolites are...
Exclusion criteria were fixed before data analysis as follows: scans with striking imaging artifacts (based on visual inspection) or with an average root mean squared relative displacement greater than 0.05 mm during the fMRI scan (as calculated by FSL) were subject to exclusion from all analyses....
Fig 1 A: Non-contrast computed tomography (CT) head scan revealing acute intracerebral haemorrhage within the right frontal lobe (white arrow) with surrounding oedema (white arrowhead). B: T2 weighted magnetic resonance imaging (MRI) of... D Wilson,ME Adams,F Robertson,... - Bmj 被引量: ...
Magnitude and phase images are reconstructed from the reference scan (top row) and also from the velocity-sensitive scan (bottom row). The phase images are subtracted to make the phase contrast image (velocity map) Full size image Velocity aliasing or wraparound If the velocity phase shift exce...
The participants could not see their hands during the scan and were asked to refrain from trying to look at their hands or the keyboard, limit unnecessary movements, and concentrate on the visual cues. The music score was not presented to the participants during the fMRI tasks. Before scanning...
MRI studies were performed using a Bruker 7.0 T ClinScan high-field small animal MRI system with a commercial rat coil (Bruker Biospin). In vitro R2 star was performed after coincubation of IONC with/without AA at room temperature for 4 h (The molar ratio of Fe to AA approximately...
a pretrained ResNet50 underwent three rounds of fine-tuning—once for each plane—to discern and classify slices based on their slab location. The outcome of this process yielded 3 Brain Scan Optimized Models (BSOM). The 3 models were then expanded to a total of 12 by passing the slices ...