Physics 9702: MEDICAL IMAGING Topical Past Paper Questions
Cambridge AS & A Level Physics (9702) past-paper questions on MEDICAL IMAGING, free. This topic is frequently examined across 23 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
(a) Explain how ultrasound waves are generated by a piezoelectric transducer. [3] (b) Ultrasound waves are used to obtain information about a structure that consists of two materials, as shown in Figure 9.1. Figure 9.1 The waves enter the structure at point P and travel through t…
Oxygen-15 ( $ ^{15}_{8}\text{O} $) is radioactive and has a half-life of 2.04 minutes. The decay of oxygen-15 produces positrons. For this reason, oxygen-15 is sometimes used as a tracer in positron emission tomography (PET scanning). (a) State what is meant by a tracer. [2] (b)…
Fluorine-18 ( $ ^{18}_{9}\text{F} $) decays by beta-plus ( $ \beta^{+} $) emission with a half-life of 110 minutes. (a) (i) State the name of the beta-plus particle. [1] (ii) Show that the decay constant of fluorine-18 is $ 1.05 \times 10^{-4} s^{-1} $. [1][2] (iii) Determine the…
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