Contrast Medium Use in Computed Tomography for Patients Presenting with Headache: 4-year Retrospective Two-Center Study in Central and Western Regions of Ghana

Table 4

Sensitivity analysis of the contrast-enhanced CT group of patients with headache, 2017–2020.

Variables	Frequency	Necessity of contrast medium
		Necessary, n = 43 (%)	Unnecessary, n = 339 (%)
CT diagnosis
Abnormal	166	43 (25.9)	123 (74.1)
Normal	216	0 (0.0)	216 (100.0)
CT findings
Sinusitis	110	16 (14.5)	94 (85.5)
Hydrocephalus/edema	12	7 (58.3)	5 (41.7)
Hemorrhage	8	2 (25.0)	6 (75.0)
Meningitis	4	2 (50.0)	2 (50.0)
Tumor/metastasis/cyst	45	22 (48.9)	23 (51.1)
Infarct	6	1 (16.7)	5 (83.3)
Brain atrophy	8	2 (25.0)	6 (75.0)
Bone-related pathology	4	2 (50.0)	2 (50.0)
Ischemic small vessel	7	0 (0.0)	7 (100.0)
Calcifications	4	1 (25.0)	3 (75.0)