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Since the geometric length of the eye or its segments cannot be measured directly (such as using a ruler or caliper), technologies had to be developed to measure themindirectly. Two of them which provide adequate resolution for ophthalmic purposes are US and optical biometry. Ultrasound (US) Bi...
DepthSpatialResolution Field DerivationCodeSequence Field DerivationDescription Field DerivationImageSequence Field DerivationImplantAssemblyTemplateSequence Field DerivationImplantTemplateSequence Field DestinationAE Field DetailsOfCoefficients Field DetectorActivationOffsetFromExposure Field DetectorActiveAreaOrien...
converted ultrasound method is shown in Figure11. It has been observed that this method provides sufficient resolution to estimate an axial stress less than 10% of the yield stress of the material with a maximum error of 5%. Figure 10 Ultrasonic mode conversion in a bounded solid [6] Full s...
Its precision in axial eye length measurement has been shown to be greater than older standard techniques, such as ultrasound A-scan.4,5 The IOL Master measures the axial eye length from the anterior corneal surface to the retinal pigment epithelium with high resolution and pre- cision, and ...
a global branch which works on the original resolution of the image, and a local branch which operates on patches of the image. In the global branch, we reduce the number of gated axial transformer layers as we observe that the first few blocks of the proposed transformer model is suffi...
Closer probe spacing may provide a better resolution but may also increase the risk of signal interference, while greater probe spacing may have a lower resolution but may also reduce the risk of interference. Coils’ pileups: The number of coils being used in a single probe has an impact ...
The stress-dependent scattering effect is based on the change in the attenuation of acoustic energy when ultrasound waves propagate through materials subjected to different uniaxial stresses. The relationship between stress and attenuation coefficient can be modeled with the help of the attenuation coeffici...