Final answer:
Increasing the sector size in ultrasound imaging typically leads to a decrease in the frame rate, as more pulses are required to scan a larger area. This affects how quickly images can be generated and updated.
Step-by-step explanation:
The subject of this question seems to be related to ultrasound imaging, a topic typically covered in medical or biomedical engineering courses. Increasing the sector size in an ultrasound generally leads to a decrease in the frame rate (B). This is because a larger sector size means the ultrasound machine needs to scan a larger area, which requires more pulses per image. Consequently, this leads to a decrease in the number of times an image can be refreshed or produced per second (frame rate).
Temporal resolution is related to the time required to acquire a single image and is also typically reduced with a larger sector size. However, the elevational resolution, which is the resolution in the slice thickness direction, is not generally affected by the sector size. Altering the target or increasing the intensity and frequency are commonly used to improve image contrast or penetration but do not directly relate to the sector size.