Balac S, Caloz G, Cathelineau G, Chauvel B, de Certaines J D
Institut de Recherche Mathématique de Rennes, Université de Rennes 1, Rennes, France.
Magn Reson Med. 2001 Apr;45(4):724-7. doi: 10.1002/mrm.1098.
Numerical simulation is a valuable tool for the study of magnetic susceptibility artifacts from metallic implants. A major difficulty in the simulation lies in the computation of the magnetic field induced by the metallic implant. A new method has been designed and implemented to compute the magnetic field induced by metallic objects of arbitrary shape. The magnetic field is expressed pointwise in terms of a surface integral. Efficient quadrature schemes are proposed to evaluate this integral. Finally, the method is linked to an artifact reconstruction model to simulate the images. Magn Reson Med 45:724-727, 2001.
数值模拟是研究金属植入物引起的磁化率伪影的一种有价值的工具。模拟中的一个主要困难在于计算金属植入物感应的磁场。已设计并实现了一种新方法来计算任意形状金属物体感应的磁场。磁场通过表面积分逐点表示。提出了有效的求积方案来计算该积分。最后，该方法与伪影重建模型相连接以模拟图像。《磁共振医学》45:724 - 727, 2001年。
