FIG. 1. (a) A schematic of a photothrombosis inducing system for precisely positioned magnetic resonance imaging. (b) A diagram of how a stereotaxic frame holding a rat moves to a knee coil in a magnetic resonance imaging system after a generation of brain damage by photothrombosis.
FIG. 2. A schematic of procedures in generation of brain damage by photothrombosis, transient and non-invasive MR imaging, and histological identification of brain damages by TTC staining.
FIG. 3. Transient T1- and T2-weighted magnetic resonance images of the brain in the rat acquired immediately (0), 24, 48, and 72 hours after the photothrombosis.
FIG. 4. (a) Estimated of regions of manually segmented measurements of average intensities in magnetic resonance images (①: a photothrombosis induced region, ②: a non-induced region of the rat brain, ③: a background region). Average intensities of (b) T2-and (c) T1-weighted magnetic resonance images on photothrombosis induced (black), non-induced (red), and background (blue) regions. Each average intensity was determined by manually segmented measurements with a size of 1.56 × 1.56 mm2. An error bar in each bar represents the standard deviation for the intensity in the measurement area established.
FIG. 5. Three-dimensional projected images of the rat brain after (a) 0 and (b) 24 hours of brain damage generation by the photothrombosis inducing system.
FIG. 6. An overall photograph of the rat brain that was removed 72 hours after brain damage generation by photothrombosis and a result of histological confirmation by TTC staining and brain slicing.
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