Which imaging modality is effective in determining the size and number of vascular lesions?

• A. CT angiography
• B. MRI angiography
• C. X-ray angiography
• D. Ultrasound

Answer: (B)

MRI angiography is particularly effective in determining the size and number of vascular lesions due to its ability to provide high-resolution images of blood vessels without the use of ionizing radiation. This modality utilizes magnetic fields and radio waves to create detailed images of the vascular system, allowing healthcare providers to visualize both arteries and veins clearly. Additionally, MRI angiography can assess subtle differences in tissue characteristics, which can help in differentiating between different types of vascular lesions.

It is also advantageous for evaluating soft-tissue structures adjacent to vascular lesions, providing context that can be crucial for planning treatment options. The contrast agents used in MRI can enhance the visibility of lesions, further aiding in accurate measurement and characterization. Overall, the combination of these features makes MRI angiography a valuable tool in the assessment of vascular lesions.