Product characteristics
1. The phantom material has thermal stability;
2. There is no significant chemical shift in the phantom material;
3. There is no significant difference in magnetic susceptibility between the phantom material and the filler;
4. The T1, T2, and proton density of the phantom material can meet the requirements;
5. The phantom is divided into four layers and can perform imaging of cross-sectional, coronal, sagittal, and oblique planes;
6. The phantom can test parameters such as signal-to-noise ratio, uniformity, geometric distortion (spatial line), scanning layer thickness and continuity, spatial resolution, low contrast resolution, artifacts, T1 and T2 measurements (sensitivity detection), etc;
Technical Parameter
1.10cm cube test plugin;
2. Cylindrical and spherical molds made of acrylic material, with an inner diameter of 20cm, filled with copper sulfate solution inside the mold;
3. Measure magnetic field uniformity, signal-to-noise ratio, T1, T2 values, spatial resolution (high resolution), density resolution (low contrast), geometric linearity, etc;
4. Spatial resolution and imaging linearity testing: including 11 sets of high-resolution test cards, with test cards of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 lp/cm, respectively. The test card contains test scales with nominal distances of 2mm, 4mm, and 8mm;
5. Low contrast sensitivity test: Contains low contrast sensitivity test blocks, including four sets of cylindrical test materials of the same type at different depths, with depths of 0.5mm, 0.75mm, 1mm, and 2mm respectively; There are three different diameters in each group of substances, namely 4mm, 6mm, and 10mm;
6. Head/body composite performance measurement phantom, measuring water equivalent value, uniformity, noise, and image consistency. The diameter of the body water phantom part is 300mm, thickness is 80mm, and the diameter of the head water phantom part is 200mm, thickness is 80mm.
7. Test conditions: Using spin echo (SE) sequence, TR=500ms, TE=30ms, acquisition frequency (NSA)=2, and scanning matrix of 256 × 256 or 512 × 512, reconstruction matrix is 256 × 256, with a field of view of 250mm2 and a layer thickness of 5.0mm, the phantom was scanned using a head/abdomen coil.
