Appearances of diffuse excessive high signal intensity (DEHSI) on MR imaging following preterm birth

Hart, Anthony R; Smith, Michael F.; Rigby, Alan S.; Wallis, L. I.; Whitby, Elspeth

doi:10.1007/s00247-010-1633-7

Cited by 38 publications

(39 citation statements)

References 43 publications

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“…The presence of high signal intensity within the regions of the "anterior caps" and "posterior arrowheads" has been previously believed to be normal in the immature cerebral white matter and consistent with regions of crossroads of immature fibers from different directions with a high content of hydrophilic extracellular matrix. 11,13 These periventricular crossroad regions become detectable from 20 weeks' gestation histologically 13 and 24 Note:-MRI ϭ MR imaging. weeks on fetal MR imaging 15 and remain visible at term gestation in many infants.…”

Section: Discussionmentioning

confidence: 99%

“…To add to this challenge, intra-and interobserver ratings of DEHSI lack reliability. 13 For this article, we conducted a large cohort study in preterm infants, first, to examine the correlation between the visually assessed DEHSI and ADC or FA values from diffusion analysis, and, second, to relate the presence and extent of DEHSI, diagnosed by a more formal grading, to short-term neurodevelopmental outcomes.…”

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confidence: 99%

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High Signal Intensity on T2-Weighted MR Imaging at Term-Equivalent Age in Preterm Infants Does Not Predict 2-Year Neurodevelopmental Outcomes

Kidokoro

Anderson

Doyle

et al. 2011

AJNR Am J Neuroradiol

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

High Signal Intensity on T2-Weighted MR Imaging at Term-Equivalent Age in Preterm Infants Does Not Predict 2-Year Neurodevelopmental Outcomes

Kidokoro

Anderson

Doyle

et al. 2011

AJNR Am J Neuroradiol

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“…Eighteen studies assessed the use of ultra-fast MRI techniques [6][7][8][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. These studies are listed in Table 2.…”

Section: Ultra-fast Mrimentioning

confidence: 99%

“…Six studies compared ultra-fast MRI techniques to conventional MRI techniques [13][14][15][16][17][18]; eight reviewed the clinical use of ultra-fast techniques [6][7][8][19][20][21][22][23]; one compared two ultrafast techniques [24]; one compared ultra-fast and standard MRI to CT [25]; and one compared ultra-fast MRI to CT [26]. Six studies compared techniques using oversampling of k-space to conventional MRI [9,[27][28][29][30][31]; and one compared an ultra-fast technique to a technique using oversampling of kspace [32].…”

Section: Study Characteristicsmentioning

confidence: 99%

Magnetic resonance imaging acquisition techniques intended to decrease movement artefact in paediatric brain imaging: a systematic review

Woodfield

Kealey

2015

Pediatr Radiol

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Attaining paediatric brain images of diagnostic quality can be difficult because of young age or neurological impairment. The use of anaesthesia to reduce movement in MRI increases clinical risk and cost, while CT, though faster, exposes children to potentially harmful ionising radiation. MRI acquisition techniques that aim to decrease movement artefact may allow diagnostic paediatric brain imaging without sedation or anaesthesia. We conducted a systematic review to establish the evidence base for ultra-fast sequences and sequences using oversampling of k-space in paediatric brain MR imaging. Techniques were assessed for imaging time, occurrence of movement artefact, the need for sedation, and either image quality or diagnostic accuracy. We identified 24 relevant studies. We found that ultra-fast techniques had shorter imaging acquisition times compared to standard MRI. Techniques using oversampling of k-space required equal or longer imaging times than standard MRI. Both ultra-fast sequences and those using oversampling of k-space reduced movement artefact compared with standard MRI in unsedated children. Assessment of overall diagnostic accuracy was difficult because of the heterogeneous patient populations, imaging indications, and reporting methods of the studies. In children with shunt-treated hydrocephalus there is evidence that ultra-fast MRI is sufficient for the assessment of ventricular size.

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“…Abbreviations: MRI, magnetic resonance imaging; DEHSI, diffuse excessive high signal intensity; PVHI, periventricular hemorrhagic infarct. 11,13,16,19,20,32) . …”

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confidence: 99%

Neurodevelopmental Outcomes of VLBW Infants with Diffuse Excessive High Signal Intensity (DEHSI) in the White Matter of the Brain MR Imaging around a Near Term-equivalent Age

Sung

Chang

2012

J Korean Soc Neonatol

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Purpose: The aim of this study was to investigate the relationship between diffuse excessive high signal intensity (DEHSI) in the white matter of the brain MRI and neurodevelopmental abnormalities in VLBW infants. Methods: The T1-and T2-weighted MR images of the brain around a near term-equivalent age in 167 VLBW infants were evaluated for the white matter lesions. The presence of DEHSI was determined and classified into four grades on the extent of DEHSI. The relationship between the grade of DEHSI and neurodevelopmental abnormalities was investigated in 94 infants who were assessed for neurodevelopmental outcomes by using a neurologic examination and neurodevelopmental assessment (BSID-II) at 18-24 months of corrected age. Results: DEHSI was the most commonly observed white matter lesion (68.3%) in the MR imaging of the brain around a near term-equivalent age. Gestational age and birth weight tended to increase with increasing grade of DEHSI (P=0.060, P=0.001, respectively). There was no significant relationship between the grade of DEHSI and neurodevelopmental outcomes at 18-24 months of corrected age (P >0.05). Periventricular cysts and ventriculomegaly in the brain MRI were significant risk factors for neurodevelopmental abnormalities (P<0.05). Conclusion: DEHSI, most commonly seen in the white matter of the brain MRI around a near term-equivalent age in VLBW infants, did not seem to be related to the neurodevelopmental abnormalities at 18-24 months of corrected age.

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Appearances of diffuse excessive high signal intensity (DEHSI) on MR imaging following preterm birth

Abstract: The visual appearances of DEHSI on conventional FSE and ultrafast SSFSE T2-W images are highly subjective, limiting its clinical application.

Cited by 38 publications

References 43 publications

High Signal Intensity on T2-Weighted MR Imaging at Term-Equivalent Age in Preterm Infants Does Not Predict 2-Year Neurodevelopmental Outcomes

High Signal Intensity on T2-Weighted MR Imaging at Term-Equivalent Age in Preterm Infants Does Not Predict 2-Year Neurodevelopmental Outcomes

Magnetic resonance imaging acquisition techniques intended to decrease movement artefact in paediatric brain imaging: a systematic review

Neurodevelopmental Outcomes of VLBW Infants with Diffuse Excessive High Signal Intensity (DEHSI) in the White Matter of the Brain MR Imaging around a Near Term-equivalent Age

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