What role does the acquisition matrix play in the accuracy of MRI signals?

The acquisition matrix is crucial in determining the spatial resolution of an MRI image. It represents the number of data points collected during an MRI scan in both the frequency and phase encoding directions. A larger acquisition matrix allows for more detailed sampling of the area being imaged, leading to finer details being represented in the resulting images. This increased number of pixels enhances the sharpness and clarity of the image, allowing for better visualization of anatomical structures and any potential pathologies.

In contrast, an acquisition matrix that is too small can lead to aliasing and a loss of detail, negatively impacting the overall quality of the image. Thus, the acquisition matrix directly influences how accurately the MRI signals can be interpreted in relation to the spatial relationships of the anatomy being imaged.