Case Study
Case Study: MRI Birdcage-Type Coil At 64 MHz
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•Case Study: MRI Birdcage-Type Coil At 64 MHz
A conventional birdcage coil that operates at 64 MHz (1.5 T) is simulated using XFdtd Release 7 and the ability to analyze the B1 field due to the loading of a human head is demonstrated. The coil geometry is taken from the paper "Effects of End-Ring/Shield Configuration on Homogeneity and Signal-to-Noise Ratio in a Birdcage-Type Coil Loaded With a Human Head" [1].
As described in the paper, the coil is a 16-rung, low-pass birdcage coil with a 27 cm diameter, 22 cm length, and a shield diameter of 34 cm, shown in Figure 1. This example will consider only the conventional configuration from the paper since the other configurations are readily constructed with slight modifications to this basic design. The model is meshed with a 2 mm base cell size and Remcom's XACT Accurate Cell Technology is enabled on all parts of the coil. Figure 2 shows the XACT representation of the FDTD mesh for a portion of the coil. A 2 mm cell size is chosen because a high resolution human body model will be loaded into the coil.
Click Here To Download:•Case Study: MRI Birdcage-Type Coil At 64 MHz
