A doctor must select one of two procedures to produce a medical image before deciding how to care for a patient. Records from previous patients are shown in the table.
| Procedure | Mean radiation dose received by one patient | Images that provided the information needed, per 100 procedures |
|---|---|---|
| X-ray imaging | 0.007 Sv | 98 |
| Gamma-ray imaging | 5 mSv | 91 |
Give the medical use of gamma rays that does not involve producing an image.
Explain which procedure presents the greater radiation risk to the patient.
Suggest which procedure the doctor should choose. Use the data in the table.
93 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.