What is the pixel size of a 1024 × 1024 matrix with a 35-cm field of view (FOV)?

To determine the pixel size of a matrix, you can use the formula that divides the field of view (FOV) by the dimensions of the matrix. In this case, the FOV is 35 cm, which is equivalent to 350 mm, and the matrix size is 1024 × 1024 pixels.

First, calculate the pixel size in one dimension (since the matrix is square, the size will be the same for both dimensions):

1. Convert the FOV from centimeters to millimeters:

[ 35 \text{ cm} = 350 \text{ mm} ]

2. Now, divide the FOV by the number of pixels along one dimension:

[ \text{Pixel size} = \frac{\text{FOV}}{\text{number of pixels}} ]

[ \text{Pixel size} = \frac{350 \text{ mm}}{1024 \text{ pixels}} ]

3. Performing the calculation gives:

[ \text{Pixel size} ≈ 0.342 \text{ mm} ]

This rounds to approximately 0.35 mm, making the calculation give an answer consistent with the correct choice.

Choosing the appropriate