湾边贸易进口代理magphan smr170 核磁共振模体
生产厂家：the phantom laboratorycylindrical【敏感词】spherical magphans
precise, comprehensive testing of mri scanners
magphan® phantoms are designed to perform a wide range of precision performance evaluations of magnetic resonance imaging (mri) scanners.
the design criteria for the magphan® phantoms are based on physicist, dr. david goodenough's extensive experience with mri system evaluation【敏感词】his well documented research into the quantification of image system performance tests. the test objects that make up the current magphan® models embody two decades of scientific evaluation【敏感词】field experience.
precise, comprehensive testing of mri scanners
magphan® phantoms are designed to perform a wide range of precision performance evaluations of magnetic resonance imaging (mri) scanners.
the design criteria for the magphan® phantoms are based on physicist, dr. david goodenough's extensive experience with mri system evaluation【敏感词】his well documented research into the quantification of image system performance tests. the test objects that make up the current magphan® models embody two decades of scientific evaluation【敏感词】field experience.
the magphan®'s patented spherical design combines precise alignment of spherical geometry with cubic geometry. as magnetic field characteristics are mapped according to spherical harmonics, natural magnetic fields extend to diagonally symmetric volumes (dsvs),【敏感词】spheres. this symmetry is the reason the aapm task group's report number 6a, titled "acceptance testing of magnetic resonance imaging systems," stated, "the sperical shape is recommended for reasons of symmetry." imaging performance is evaluated in the transaxial, coronal, sagittal【敏感词】oblique planes by rotating the sphere. the magphan® is also available with a conventional cylindrical housing for test groups【敏感词】manufacturers who prefer the conventional cylindrical shaped phantoms. spherical magphan® (smr100) is a urethane sphere composed of two hemispherical shells with an inner diameter of 20cm. |
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the shells are connected with a simple threaded flange connecting ring. the test cube assembly can be quickly removed without tools for greater imaging flexibility【敏感词】easy access for cleaning【敏感词】maintenance. cylindrical magphan® (smr170) has a removable end plate for internal access. the acrylic cylinder has an outer diameter of 20cm【敏感词】an inner diameter of 19cm. tests - summary spatial uniformity signal-to-noise ratio (snr) spherical geometry |
| in-vitro sample testing
geometric distortion (spatial linearity)
pixel (matrix) size verification
scan slice width【敏感词】contiguity
verification of patient alignment system
spatial resolution up to 11 line pairs per cm (0.45mm resolution)
low contrast sensitivity
t1【敏感词】t2 measurements
evaluation of 3-dimensional volume reconstruction
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