OBJECTIVE: Traumatic brain injury is a major cause of disability and death. Most patients sustain a mild head injury with a subgroup that experiences disabling symptoms interfering with return to work. Brain imaging in the acute phase is not predictive of outcome, as 20% of noncontrast computed tomographic (CT) scans on admission is normal in patients with a suboptimal outcome. The aim of this study was to perform perfusion CT imaging in the acute phase of mild head injury in patients without intracranial abnormalities on the noncontrast CT, to assess whether these patients had cerebral perfusion abnormalities. Furthermore, the relation between perfusion CT parameters and severity of head injury and outcome was evaluated. METHODS: In patients with mild head injury and normal noncontrast CT, perfusion CT was performed directly after admission. The perfusion data were compared with data of 25 healthy control subjects. Outcome was determined 6 months after injury with the extended Glasgow Coma Outcome Scale score and return to work. RESULTS: Seventy-six patients were included. In patients with a decreased Glasgow Coma Scale score, a significant decrease of cerebral blood flow and cerebral blood volume was detected in the frontal and occipital gray matter. In logistic regression analyses, decreased cerebral blood flow and cerebral blood volume in the frontal lobes predicted worse outcome according to the extended Glasgow Coma Outcome Scale score. CT perfusion parameters did not predict return to work. INTERPRETATION: In the acute phase of mild head injury, disturbed cerebral perfusion is seen in patients with normal noncontrast CT correlating with severity of injury and outcome.
OBJECTIVE:Traumatic brain injury is a major cause of disability and death. Most patients sustain a mild head injury with a subgroup that experiences disabling symptoms interfering with return to work. Brain imaging in the acute phase is not predictive of outcome, as 20% of noncontrast computed tomographic (CT) scans on admission is normal in patients with a suboptimal outcome. The aim of this study was to perform perfusion CT imaging in the acute phase of mild head injury in patients without intracranial abnormalities on the noncontrast CT, to assess whether these patients had cerebral perfusion abnormalities. Furthermore, the relation between perfusion CT parameters and severity of head injury and outcome was evaluated. METHODS: In patients with mild head injury and normal noncontrast CT, perfusion CT was performed directly after admission. The perfusion data were compared with data of 25 healthy control subjects. Outcome was determined 6 months after injury with the extended Glasgow Coma Outcome Scale score and return to work. RESULTS: Seventy-six patients were included. In patients with a decreased Glasgow Coma Scale score, a significant decrease of cerebral blood flow and cerebral blood volume was detected in the frontal and occipital gray matter. In logistic regression analyses, decreased cerebral blood flow and cerebral blood volume in the frontal lobes predicted worse outcome according to the extended Glasgow Coma Outcome Scale score. CT perfusion parameters did not predict return to work. INTERPRETATION: In the acute phase of mild head injury, disturbed cerebral perfusion is seen in patients with normal noncontrast CT correlating with severity of injury and outcome.
Authors: Erin M Buckley; Benjamin F Miller; Julianne M Golinski; Homa Sadeghian; Lauren M McAllister; Mark Vangel; Cenk Ayata; William P Meehan; Maria Angela Franceschini; Michael J Whalen Journal: J Cereb Blood Flow Metab Date: 2015-07-08 Impact factor: 6.200
Authors: Ronald A Yeo; Charles Gasparovic; Flannery Merideth; David Ruhl; David Doezema; Andrew R Mayer Journal: J Neurotrauma Date: 2011-01 Impact factor: 5.269
Authors: Andrew R Mayer; Mayank Kaushal; Andrew B Dodd; Faith M Hanlon; Nicholas A Shaff; Rebekah Mannix; Christina L Master; John J Leddy; David Stephenson; Christopher J Wertz; Elizabeth M Suelzer; Kristy B Arbogast; Timothy B Meier Journal: Neurosci Biobehav Rev Date: 2018-08-09 Impact factor: 8.989
Authors: K L Triebel; R C Martin; T A Novack; L Dreer; C Turner; P R Pritchard; R Raman; D C Marson Journal: Neurology Date: 2012-04-11 Impact factor: 9.910
Authors: Marion Smits; Gavin C Houston; Diederik W J Dippel; Piotr A Wielopolski; Meike W Vernooij; Peter J Koudstaal; M G Myriam Hunink; Aad van der Lugt Journal: Neuroradiology Date: 2010-10-06 Impact factor: 2.804