Table 4.
The numbers (n) and indications of unjustified CT examinations and possibility of using other modalities
| CT examination | Possibility of other modalities to replace CT and indications of unjustified cases | |||
| Unjustified (n) | MRI | Ultrasound | Nothing | |
| Lumbar spine | 5 | 4 | 1 | |
| Symptoms of disk herniation | Leukaemia patient's back pain for a couple of days (at first follow-up) | |||
| Head | 8 | 8 | ||
| Postoperative dizziness | ||||
| Control of trauma patients (ventricular size, haemorrhagia) | ||||
| Control of hydrocephalus or shunt | ||||
| Migraine patient's transient aphasia | ||||
| Prolonged headache/suspicion of tumour | ||||
| Abdomen or upper abdomen | 6 | 5 | 1 | |
| Prolonged pain in lower abdomen | Abdominal pain in a few days | |||
| Lesions of liver or spleen | ||||
| Evaluation of pancreatic pseudocyst | ||||
| Nasal sinuses | 3 | 2 | 1 | |
| Control of sinusitis | Control of incidental finding in head CT without any symptoms | |||
| Cervical spine | 1 | 1 | ||
| Trauma patient with aphasia (head CT was also performed) | ||||
| Trauma | 0 | |||
| Total | 23 | 19 | 1 | 3 |