(a(i))[3]
Explain how X-rays are generated for use in medical diagnosis.
(a(ii))[1]
State why X-ray images are obtained from several sections of the body during computed tomography (CT) scanning.
(b)
An X-ray image is recorded of the structure shown in Fig. 9.1.
(b(i))[2]
Determine, in terms of $I_0$, the intensity of the detected X-rays from point $P$.
(b(ii))[2]
Determine, in terms of $I_0$, the intensity of the detected X-rays from point $Q$.
(c)[1]
Explain, with reference to your answers in (b), whether the X-ray image of the structure in Fig. 9.1 has good contrast.