To increase the voxel volume, which parameters would be adjusted?

To increase the voxel volume, which parameters would be adjusted?

• A. FOV, slice gap and matrix
• B. FOV, slice thickness and matrix
• C. Matrix, slice thickness and slice gap
• D. Slice thickness and interslice gap

Answer: (B)

Increasing the voxel volume in MRI involves modifying parameters that directly influence the size of the volume represented by each voxel. The key factors that contribute to voxel volume are the field of view (FOV), slice thickness, and matrix array. Adjusting the field of view enlarges the area being imaged, which increases the total volume represented by each voxel since voxel dimensions are derived from the FOV. Specifically, a larger FOV means that each voxel encompasses more spatial area, contributing to a larger volume overall. Changing the slice thickness directly affects the third dimension of the voxel. Increasing the slice thickness adds height to the voxel, leading to a greater volume since the calculation for voxel volume is a function of all three dimensions (length × width × height). Although the role of the matrix is more related to image resolution than volume, lowering the matrix size (reducing the number of pixels in each dimension) indirectly affects the voxel volume by pairing it with a larger FOV. If the matrix is reduced while maintaining an increased FOV, the individual voxel size would consequently increase, leading to a larger volume. Given these relationships, adjusting the field of view, slice thickness, and matrix serves to effectively increase the voxel volume within the imaging sequence. This makes the selection

Increasing the voxel volume in MRI involves modifying parameters that directly influence the size of the volume represented by each voxel. The key factors that contribute to voxel volume are the field of view (FOV), slice thickness, and matrix array.

Adjusting the field of view enlarges the area being imaged, which increases the total volume represented by each voxel since voxel dimensions are derived from the FOV. Specifically, a larger FOV means that each voxel encompasses more spatial area, contributing to a larger volume overall.

Changing the slice thickness directly affects the third dimension of the voxel. Increasing the slice thickness adds height to the voxel, leading to a greater volume since the calculation for voxel volume is a function of all three dimensions (length × width × height).

Although the role of the matrix is more related to image resolution than volume, lowering the matrix size (reducing the number of pixels in each dimension) indirectly affects the voxel volume by pairing it with a larger FOV. If the matrix is reduced while maintaining an increased FOV, the individual voxel size would consequently increase, leading to a larger volume.

Given these relationships, adjusting the field of view, slice thickness, and matrix serves to effectively increase the voxel volume within the imaging sequence. This makes the selection