Imaging findings of brain death on 3-tesla MRI

To demonstrate the usefulness of 3-tesla (3T) magnetic resonance imaging (MRI) including T2-weighted imaging (T2WI), diffusion weighted imaging (DWI), time-of-flight (TOF) magnetic resonance angiography (MRA), T2*-weighted gradient recalled echo (GRE), and susceptibility weighted imaging (SWI) in di...

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Bibliographic Details
Published in:Korean journal of radiology 2012, 13(5), , pp.541-549
Main Authors: Sohn, Chul-Ho, Lee, Hwa-Pyung, Park, Jun Beom, Chang, Hyuk Won, Kim, Ealmaan, Kim, Eunhee, Park, Ui Jun, Kim, Hyoung-Tae, Ku, Jeonghun
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Brain death
Brain Death - pathology
Cytotoxicity
Diffusion Magnetic Resonance Imaging
Edema
Electroencephalography
False Positive Reactions
Female
Hemorrhage
Humans
Hypothermia
Image Interpretation, Computer-Assisted
Magnetic Resonance Angiography
Magnetic resonance imaging
Magnetic Resonance Imaging - methods
Male
Medical imaging
Middle Aged
Original
Patients
Retrospective Studies
Sensitivity and Specificity
Statistical analysis
Veins & arteries
Visualization
Work stations
방사선과학
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Summary:To demonstrate the usefulness of 3-tesla (3T) magnetic resonance imaging (MRI) including T2-weighted imaging (T2WI), diffusion weighted imaging (DWI), time-of-flight (TOF) magnetic resonance angiography (MRA), T2*-weighted gradient recalled echo (GRE), and susceptibility weighted imaging (SWI) in diagnosing brain death. Magnetic resonance imaging findings for 10 patients with clinically verified brain death (group I) and seven patients with comatose or stuporous mentality who did not meet the clinical criteria of brain death (group II) were retrospectively reviewed. Tonsilar herniation and loss of intraarterial flow signal voids (LIFSV) on T2WI were highly sensitive and specific findings for the diagnosis of brain death (p < 0.001 and < 0.001, respectively). DWI, TOF-MRA, and GRE findings were statistically different between the two groups (p = 0.015, 0.029, and 0.003, respectively). However, cortical high signal intensities in T2WI and SWI findings were not statistically different between the two group (p = 0.412 and 1.0, respectively). T2-weighted imaging, DWI, and MRA using 3T MRI may be useful for diagnosing brain death. However, SWI findings are not specific due to high false positive findings.
ISSN:1229-6929
2005-8330
DOI:10.3348/kjr.2012.13.5.541