What are the dimensions of each pixel if an image is acquired into a 128 x 128 matrix on a scintillation camera with a 350mm diameter field of view?

To determine the dimensions of each pixel in an image acquired on a scintillation camera with a specified matrix size and field of view, we can use the following formula:

Pixel Size = (Field of View Diameter) / (Matrix Dimension)

In this case, the field of view (FOV) diameter is 350 mm, and the matrix size is 128 x 128. This means that the image is composed of 128 pixels both horizontally and vertically.

First, we calculate the size of each pixel in millimeters:

1. The pixel size can be calculated for one dimension (either width or height since it's a square matrix):

Pixel Size = 350 mm / 128 pixels

Now, performing the calculation:

Pixel Size = 350 mm / 128 ≈ 2.734375 mm

This value rounds to approximately 2.73 mm when considering typical significant figures in measurements.

As a result, since each pixel is square, the dimensions of each pixel are 2.73 mm x 2.73 mm. Thus, the correct answer, providing the pixel dimensions, would be the option identified.