Figure 2 shows scanned images of three different human heads - AQA - A-Level Physics - Question 2 - 2021 - Paper 5
Question 2
Figure 2 shows scanned images of three different human heads. Each image used one of the following scanning techniques:
• magnetic resonance (MR)
• CT
• ultrasound
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Worked Solution & Example Answer:Figure 2 shows scanned images of three different human heads - AQA - A-Level Physics - Question 2 - 2021 - Paper 5
Step 1
A: Scanning technique
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Answer
CT scanner
The image shows distinct outlines of bony structures, which are typical for a CT scan. CT scans are particularly useful for visualizing bone detail.
Step 2
B: Scanning technique
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Answer
MR scanner
This image provides a high-resolution, detailed view of soft tissues, especially the brain and eyes. MR imaging excels in highlighting soft tissue contrast.
Step 3
C: Scanning technique
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Ultrasound scanner
The image appears low resolution and shows external boundaries, typical of ultrasound. It lacks the detailed internal structures, particularly of hard tissues like bone.
