Acute neuromedical and neurosurgical admissions: Standard and ultrafast MR imaging of the brain compared with cranial CT

Griffiths, Paul D.; Wilkinson, Iain D.; Patel, Maneesh C.; Romanowski, C.A.J.; Mitchell, Patrick; Graham, A.; Powell, T.; Hodgson, Timothy J.; Paley, Martyn N.J.

doi:10.1080/028418500127345640

Cited by 7 publications

(24 citation statements)

References 15 publications

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“…The acquisition time was longer with increased numbers of planes and sequences acquired and ranged from 8 s for one sequence in one plane [23] up to nearly 4 min for five sequences [25]. Average time in the scanner, including positioning, was reported by some authors, and this ranged from less than 3 min [22] to up to 22 min for two sequences in three planes [7].…”

Section: Ultra-fast Mrimentioning

confidence: 94%

“…In four studies a T1-weighted gradient echo (GRE) sequence was used in addition to the T2-weighted single-shot FSE sequence [7,16,17,24]. Three studies included echoplanar imaging (EPI) sequences along with a single-shot FSE sequence [14,16,25]. Only two studies did not assess a single-shot FSE sequence.…”

Section: Ultra-fast Mrimentioning

confidence: 99%

“…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%

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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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Section: Ultra-fast Mrimentioning

confidence: 94%

Section: Ultra-fast Mrimentioning

confidence: 99%

“…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%

Section: Study Characteristicsmentioning

confidence: 99%

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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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“…UfMRI has been most commonly used in pediatric neuroradiology for evaluation of intracranial shunts in children with hydrocephalus and majority of reported ufMRI brain protocols include only multiplanar T2-weighted HASTE sequences. [25][26][27][28][29][30][31][32][33][34] Consequently, although an ufMRI has been reported to demonstrate limitations for detection of intracranial hemorrhage, the described ufMRI protocol lacked blood-sensitive sequences. 35 Recently, an ufMRI protocol incorporating sequences in addition to T2 sequences have been reported in pediatric trauma patients.…”

Section: Introductionmentioning

confidence: 99%

Diagnostic Performance of Ultrafast Brain MRI for Evaluation of Abusive Head Trauma

Kralik¹,

Yasrebi²,

Supakul³

et al. 2017

AJNR Am J Neuroradiol

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BACKGROUND AND PURPOSE: MRI with sedation is commonly used to detect intracranial traumatic pathology in the pediatric population. Our purpose is to compare nonsedated ultrafast MRI (ufMRI), non-contrast head CT (nHCT), and standard MRI (stMRI) for detection of intracranial trauma in patients with potential abusive head trauma (AHT). MATERIALS AND METHODS:A prospective study was performed in 24 pediatric patients who were evaluated for potential AHT. All patients received nHCT, ufMRI brain without sedation, and stMRI with general anesthesia or papoose, sequentially. Two pediatric neuroradiologists independently reviewed each modality blinded to other modalities for intracranial trauma. Inter-reader agreement was performed, and consensus interpretation for stMRI as the gold standard. Diagnostic accuracy was calculated for ufMRI, nHCT, and combined ufMRI with nHCT. RESULTS:Inter-reader agreement was moderate for ufMRI (k=0.42), substantial for nHCT (k=0.63), and nearly perfect for stMRI (k=0.86). 42% of patients had discrepancies between ufMRI and stMRI which included detection of subarachnoid hemorrhage, and subdural hemorrhage. Sensitivity, specificity, positive and negative predictive values were obtained for any traumatic pathology for each exam: UfMRI (50%, 100%, 100%, 31%), nHCT (25%, 100%, 100%, 21%) and combination of ufMRI with nHCT (60%, 100%, 100%, 33%). UfMRI was more sensitive than nHCT for detection of intraparenchymal hemorrhage (p=0.03), and the combination of ufMRI with nHCT was more sensitive than nHCT alone for intracranial trauma (p=0.02). CONCLUSION:In AHT, ufMRI, even combined with nHCT, demonstrated low sensitivity compared to stMRI for intracranial traumatic pathology which may limit its utility in this patient population.Abbreviations: AHT: abusive head trauma; GRE: gradient recalled echo; nHCT: non contrast head CT

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Rapid MRI evaluation of acute intracranial hemorrhage in pediatric head trauma

et al. 2016

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Acute neuromedical and neurosurgical admissions: Standard and ultrafast MR imaging of the brain compared with cranial CT

Abstract: MR can be used to image acute neurological admissions with a high success rate, particularly using ultrafast methods. In many cases, MR provided extra information of direct clinical relevance not shown on CT.

Cited by 7 publications

References 15 publications

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

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

Diagnostic Performance of Ultrafast Brain MRI for Evaluation of Abusive Head Trauma

Rapid MRI evaluation of acute intracranial hemorrhage in pediatric head trauma

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