Increasing the time of repetition (TR) results in which of the following effects on scan time?

Increasing the time of repetition (TR) has a direct impact on the duration of the MRI scan. TR is the time interval between successive excitations of a given slice in the imaging sequence. When TR is prolonged, each slice takes longer to acquire its data, effectively leading to a longer overall scan time.

This relationship is important for understanding how imaging parameters affect the workflow and efficiency of an MRI exam. As TR increases, the time required to collect the necessary data for image reconstruction also increases, resulting in an extended scan time. This can influence both patient comfort and scheduling in a clinical setting.

Additionally, while increasing TR can enhance image quality by providing more relaxation time for tissues, that aspect is not the primary reason for the increase in scan time. The focus in this question is specifically on the impact of TR on the duration of the scanning process itself.