This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
"Time of Flight" technique is used in 
Select and explain. 
A. HRCT, B. MR imaging, C. Spiral CT, D. Conventional radiography
B: MR imaging
Answer: B: MR imaging 
Explanation: Time of Flight is used in MR imaging.