| Date | November 2017 | Marks available | 4 | Reference code | 17N.3.HL.TZ0.2 |
| Level | HL | Paper | 3 | Time zone | no time zone |
| Command term | Compare | Question number | 2 | Adapted from | N/A |
Question
Refer to the Paper 3 Case study: computer science in medicine, available under the "Your tests" tab > supplemental materials.
Compare ultrasound and a CT scan in the creation of a medical image.
Outline two compatibility issues that might be faced with the introduction of Electronic health records (EHRs) in a large country.
Markscheme
Award [1] for each comparison up to [4 max]. Note that the italicised descriptions below are from then case study and will not gain credit unless they are expanded on.
Award [1] for each issue and [1] for each associated outline, for two issues up to [4 max].
Hardware incompatibility;
Different machines making measurements with dedicated processors;
Software incompatibility;
e.g. different OS where not all function with the electronic records software;
Different format of records;
Not all centres taking the same measurements;
Different format of results;
For example temperature “> 40” or temperature “= 40.5”;
Analogue values may be rounded differently;
Note: Accept other reasonable issues which could occur.
