نتایج جستجو برای: orthogonal fields
تعداد نتایج: 291110 فیلتر نتایج به سال:
introduction: orthogonal radial fields are those in which the central axes are perpendicular to each other. an example of these orthogonal fields is the set of craniospinal orthogonal fields that are used for radiotherapy of medulloblastoma. craniospinal radial fields consist of two parallel-opposed fields for brain exposure and one or two posterior spinal fields for spinal cord exposure. the m...
Introduction: Orthogonal radial fields are those in which the central axes are perpendicular to each other. An example of these orthogonal fields is the set of craniospinal orthogonal fields that are used for radiotherapy of medulloblastoma. Craniospinal radial fields consist of two parallel-opposed fields for brain exposure and one or two posterior spinal fields for spinal cord exposure. The m...
Introduction: The PatLoc concept has been introduced to perform imaging using non-bijective, curvilinear encoding fields [1]. Simulations have shown that a pair of mutually rotated multipolar encoding fields with cylindrical symmetry combined with a linear gradient for slice-selection have very good imaging properties especially in the outer half of the enclosed cylinder [2]. The gradients of t...
If we consider the quotient space of each tangent plane with respect to this equivalence relation, and the related quotient tangent bundle TS/∼1, a field FD : S −→ TS/∼1 maps each point on the surface to a direction. It is customary to take unit-length vectors as representatives of their equivalence classes, so that a direction field can be regarded as a vector field where the length of all vec...
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