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6 Particles and medical physics
Quick questions on Medical imaging: X-rays, attenuation, PET and ultrasound - OCR A-Level Physics A
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
State the exponential attenuation law for X-rays and define each term. [2 marks]
What is q2?Show answer
An X-ray beam passes through tissue with . Find the half-value thickness. Take .
What is q3?Show answer
Explain why a coupling gel is used in ultrasound scanning. [2 marks]
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