Final answer:
A pitch greater than 1 is not ideal for a CT examination due to the potential for increased radiation exposure and lower quality images, as it could result in gaps between slices and insufficient overlap.
Step-by-step explanation:
A pitch greater than 1 is not ideal for a computed tomography (CT) examination primarily because it can lead to a release of increased amounts of radiation and result in poor quality images. The pitch in CT imaging refers to the ratio of the table feed per rotation to the slice thickness. When the pitch is greater than 1, there is a possibility that there might be gaps between slices or insufficient overlap, which can lead to image artifacts and lower resolution scans. Additionally, increasing the pitch can result in a higher radiation dose to the patient which is not ideal as it increases the risk of radiation-induced health issues. Therefore, maintaining an optimal pitch is crucial for balancing image quality against radiation exposure.