Final answer:
An MRI scan usually lasts for around 30 minutes, but can vary depending on the specific requirements and the patient's condition. Advancements in technology have made the procedure more comfortable with the development of "open" MRI scanning.
Step-by-step explanation:
The duration of an MRI scan can vary but typically lasts for around 30 minutes. However, it can sometimes take longer depending on the specific requirements of the scan and the patient's condition. Additionally, advancements in technology have led to the development of "open" MRI scanning, which does not require the patient to be entirely enclosed in the metal tube, making the procedure more comfortable and practical for patients.