Somatom sensation 64 row scanner

Non-contrast head CT was performed on a Siemens Somatom Sensation 64-row scanner (Siemens Healthineers, Erlangen, Germany) in 299 of the patients as a part of routine clinical assessment. In addition, brain MRI scans were acquired on a 3 Tesla Siemens Skyra System (32-channel head coil; Siemens Healthineers) within 72 h of injury for 198 patients with mTBI. The following sequences were included: three-dimensional T₁, T₂, susceptibility-weighted imaging, diffusion-weighted imaging (DWI), and fluid-attenuated inversion recovery. All CT and MRI scans were read by experienced radiologists,^{34 (link)} and patients with mTBI and intracranial traumatic findings on CT and/or MRI were considered to have complicated mTBI.

Non-contrast CT (n = 162) was performed on a Siemens Somatom Sensation 64 row scanner as part of the initial clinical assessment, according to the Scandinavian Guidelines for Head Injury Management.^{24 (link)}CT readings were first obtained from the radiology report. The intracranial traumatic findings on CT were classified into: (1) contusion, (2) epidural hematoma (EDH), (3) traumatic subarachnoid hemorrhage (tSAH), and (4) subdural hematoma (SDH). The CT scans from patients with intracranial traumatic findings on MRI were later reviewed by an experienced neuroradiologist (K.A.K.) and a consultant in physical medicine and rehabilitation (C.E.E.). Two additional findings were thereby identified, one tSAH and one SDH.