Choose the correct slice thickness to create an isotropic voxel for the following: TR 2000, TE 90, Matrix 272 x 272, FOV 24cm.

To determine the correct slice thickness for creating an isotropic voxel, it is essential to evaluate the relationship between the field of view (FOV), the matrix size, and the desired voxel characteristics. Isotropic voxels have equal dimensions in all three dimensions (x, y, and z), which means the slice thickness must match the pixel dimensions in the plane.

First, the pixel size in the plane can be calculated using the FOV and matrix size. The formula for calculating pixel size is:

Pixel Size = FOV / Matrix Size

In this case, the FOV is 24 cm (which is 240 mm) and the matrix size is 272 x 272. This gives:

Pixel Size = 240 mm / 272 = approximately 0.882 mm.

An isotropic voxel means that the slice thickness must be equal to the pixel size. Therefore, to achieve isotropy, the slice thickness should also be approximately 0.88 mm, which corresponds closely to the calculated pixel size.

Thus, the choice with a slice thickness of 0.88 mm is the best option for creating an isotropic voxel in this scenario. This approach ensures that all dimensions of the voxel have the same measurement, fulfilling the requirement for isot