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Table 5 Proportion of reports with a brain imaging phenotype in NHS Tayside (110,695 reports). Small numbers suppressed due to data governance requirements

From: A validated natural language processing algorithm for brain imaging phenotypes from radiology reports in UK electronic health records

  Reports (N) Percentage of total number of scans (%)
Atrophy 28,757 26.0
Small vessel disease 15,015 13.6
Stroke
 Underspecified 1609 1.5
Haemorrhagic stroke
 Deep, old 168 0.2
 Deep, recent 397 0.4
 Lobar, old 288 0.3
 Lobar, recent 415 0.4
 Underspecified 5702 5.2
Ischaemic stroke
 Cortical, old 4385 4.0
 Cortical, recent 1860 1.7
 Deep, old 10,636 9.6
 Deep, recent 771 0.7
 Underspecified 9172 8.3
 Haemorrhagic transformation 279 0.3
 Subdural hematoma 2272 2.1
Subarachnoid haemorrhage
 Aneurysmal 55 0.1
 Other 1381 1.3
Microbleed
 Deep 15 0.0
 Lobar < 10 0.0
 Underspecified 19 < 0.1
Tumour
 Glioma 667 0.6
 Meningioma 1458 1.3
 Metastasis 2621 2.4
 Other 4191 3.8