A Quantitative Analysis of Head Injury Using T2*-Weighted Gradient-Echo Imaging

Yanagawa, Youichi; Tsushima, Yoshito; Tokumaru, Aya M.; Unno, Yasushi; Sakamoto, Toshihisa; Okada, Yoshiaki; Nawashiro, Hiroshi; Shima, Katsuji

doi:10.1097/00005373-200008000-00013

Cited by 106 publications

(52 citation statements)

References 12 publications

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“…There are currently conflicting results on the relationship between outcome and the number of lesions on MRI, given the few comparison studies available. Some studies report that lesions on T2WI (Chastain et al, 2009;Gerber et al, 2004;Sigmund et al, 2007), FLAIR (Chastain et al, 2009;Sigmund et al, 2007), T2*-GRE (Gerber et al, 2004;Yanagawa et al, 2000), and SWI (Sigmund et al, 2007;Tong et al, 2004), can discriminate or correlate with outcomes. Other studies report that there is no correlation between outcomes and lesions on T2WI (Yanagawa et al, 2000), T2*-GRE (Scheid et al, 2003), and SWI (Chastain et al, 2009).…”

Section: Mrimentioning

confidence: 99%

Emerging Imaging Tools for Use with Traumatic Brain Injury Research

Hunter

Wilde

Tong

et al. 2012

Journal of Neurotrauma

114

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This article identifies emerging neuroimaging measures considered by the inter-agency Pediatric Traumatic Brain Injury (TBI) Neuroimaging Workgroup. This article attempts to address some of the potential uses of more advanced forms of imaging in TBI as well as highlight some of the current considerations and unresolved challenges of using them. We summarize emerging elements likely to gain more widespread use in the coming years, because of 1) their utility in diagnosis, prognosis, and understanding the natural course of degeneration or recovery following TBI, and potential for evaluating treatment strategies; 2) the ability of many centers to acquire these data with scanners and equipment that are readily available in existing clinical and research settings; and 3) advances in software that provide more automated, readily available, and cost-effective analysis methods for large scale data image analysis. These include multi-slice CT, volumetric MRI analysis, susceptibility-weighted imaging (SWI), diffusion tensor imaging (DTI), magnetization transfer imaging (MTI), arterial spin tag labeling (ASL), functional MRI (fMRI), including resting state and connectivity MRI, MR spectroscopy (MRS), and hyperpolarization scanning. However, we also include brief introductions to other specialized forms of advanced imaging that currently do require specialized equipment, for example, single photon emission computed tomography (SPECT), positron emission tomography (PET), encephalography (EEG), and magnetoencephalography (MEG)/magnetic source imaging (MSI). Finally, we identify some of the challenges that users of the emerging imaging CDEs may wish to consider, including quality control, performing multi-site and longitudinal imaging studies, and MR scanning in infants and children.

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Section: Mrimentioning

confidence: 99%

Emerging Imaging Tools for Use with Traumatic Brain Injury Research

Hunter

Wilde

Tong

et al. 2012

Journal of Neurotrauma

114

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“…4) The number of hemorrhages due to head injury was minimized by excluding patients with a past history of moderate and severe head injury because T 2 *-weighted MR imaging shows minute hemorrhages in patients with severe head trauma. 29) The present study showed that hypertensive patients with symptomatic hemorrhage tended to have asymptomatic minute hemorrhages, compared with patients with symptomatic cerebral infarction. Hypointense lesions in the globus pallidus were not counted, because globus pallidus in the elderly tends to contain calcification.…”

Section: Discussionmentioning

confidence: 47%

Relationship Between Stroke and Asymptomatic Minute Hemorrhages in Hypertensive Patients.

Yanagawa

Sakamoto

Okada

et al. 2001

Neurol. Med. Chir.(Tokyo)

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“…The ecoplanar gradient sequence at the T2* weighing contributed to demonstrate chronic and acute intra-axial hemorrhage 32 . The utility of FLAIR images in diagnosing swelling and subarachnoid hemorrhage was studied by many researchers 28,29,33 .…”

Section: Discussionmentioning

confidence: 99%

Clinical application of magnetic resonance in acute traumatic brain injury

Morais

Spotti

Tognola

et al. 2008

Arq. Neuro-Psiquiatr.

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-Purpose:To evaluate the clinical applications of magnetic resonance imaging (MRI) in patients with acute traumatic brain injury (TBI): to identify the type, quantity, severity; and improvement clinical-radiological correlation. Method: Assessment of 55 patients who were imaged using CT and MRI, 34 (61.8%) males and 21 (38.2%) females, with acute (0 to 5 days) and closed TBI. Results: Statistical significant differences (McNemar test): ocurred fractures were detected by CT in 29.1% and by MRI in 3.6% of the patients; subdural hematoma by CT in 10.9% and MRI in 36.4 %; diffuse axonal injury (DAI) by CT in 1.8% and MRI in 50.9%; cortical contusions by CT in 9.1% and MRI in 41.8%; subarachnoid hemorrhage by CT in 18.2% and MRI in 41.8%. Conclusion: MRI was superior to the CT in the identification of DAI, subarachnoid hemorrhage, cortical contusions, and acute subdural hematoma; however it was inferior in diagnosing fractures. The detection of DAI was associated with the severity of acute TBI.Key woRDS: magnetic resonance imaging, traumatic brain injury. Aplicação clínica da ressonância magnética em pacientes com traumatismo craniencefálico agudoResumo -Propósito: Avaliar a aplicação clínica da ressonância magnética (RM) em pacientes vítimas de traumatismo craniencefálico (TCe) agudo, na identificação do tipo, número, gravidade e correlação clínica-radiológica. Método: Foram estudados prospectivamente 55 pacientes vítimas de TCe agudo fechado (0-5 dias), por TC e RM, sendo 34 do sexo masculino e 21 do feminino. Resultados: Houve diferença estatisticamente significante (teste McNemar): fraturas de crânio foram detectadas em 29,1% pacientes na TC e 3,6% pela RM; hematoma subdural 10,9% na TC e 36,4% pela RM; lesão axonal difusa (LAD) 1,8% pela TC e 50,9% na RM; contusões corticais 9,1% na TC e 41,8% pela RM, hemorragia subaracnóidea 18,2% na TC e 41,8% pela RM. Conclusão: A RM foi superior à TC na identificação da LAD, hemorragia subaracnóidea, contusões corticais e hematoma subdural agudo, porém inferior no diagnóstico de fraturas. A detecção de LAD pela RM foi associada com maior gravidade do TCe agudo. PALAVRAS-CHAVe: ressonância magnética, traumatismo craniencefálico.

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A Quantitative Analysis of Head Injury Using T2*-Weighted Gradient-Echo Imaging

Abstract: T2*-GE was found to be useful for evaluating the clinical symptoms of head injury.

Cited by 106 publications

References 12 publications

Emerging Imaging Tools for Use with Traumatic Brain Injury Research

Emerging Imaging Tools for Use with Traumatic Brain Injury Research

Relationship Between Stroke and Asymptomatic Minute Hemorrhages in Hypertensive Patients.

Clinical application of magnetic resonance in acute traumatic brain injury

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