Model 538NH Beam Profile & Slice Thickness Phantom
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Model 538N Beam Prole & Slice Thickness Phantom Description The phantom contains a thin plane of echogenic material embedded in an anechoic rubber-based tissue-mimicking matrix. Model 538N has two scan planes. The scattering plane is oriented at 45° to one scan plane and perpendicular to the other. The beam prole is easily displayed at varying depths using the Model 538N. The beam prole contains a great deal of information regarding the conguration of the sound beam as it propagates through the tissuemimicking media. The beam prole clearly displays the near eld, focal length, focal zone, beam width, side and grating lobes and beam divergence in the far eld. In addition, amplitude variations in the near eld are displayed as varying degrees of brightness versus the almost homogeneity of the amplitude in the far eld. The Model 538N provides a means of evaluating the slice thickness of an imaging system at varying depths. Slice thickness or elevational resolution, the third component of spatial resolution, displays reections produced by structures in front of or behind the beam’s main axis. The effect of changes in the slice thickness is identical to those seen with axial and lateral resolution. Thinner the slice thickness the better the resolution; as the slice thickness increases, the degree of spatial resolution decreases. Lifetime warranty. Tests Performed • Bean ProleSlice Thickness • Image Uniformity • Tissue Harmonic Imaging Compatibility Specications Overall Dimensions: Scan Surfaces: Weight: Tissue Mimicking Material: Freezing Point: Melting Point: Attenuation Coefcient: Speed of Sound: Targets Scattering plane oriented at 45° to the scan planes used to measure slice thickness, and 90° to the beam prole scan plane Size: 26 x 7 cm Depth: 0 to 22 cm