MR neurography in traumatic, non-obstetric paediatric brachial plexopathy

Upadhyaya, Vijai D.; Upadhyaya, Divya Narain; Mishra, Brijesh

doi:10.1007/s00330-017-5217-x

Cited by 10 publications

(8 citation statements)

References 24 publications

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“…High-resolution magnetic resonance neurography (MRN) has emerged to a useful diagnostic tool for various neuropathies and allows detecting minor damage of the peripheral nervous system (PNS) with high sensitivity [1][2][3][4][5][6]. In a clinical setting, MRN is typically based on visual assessment of nerve lesions using high-resolution T2-weighted sequences.…”

Section: Introductionmentioning

confidence: 99%

Reliability and reproducibility of sciatic nerve magnetization transfer imaging and T2 relaxometry

et al. 2021

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Objectives To assess the interreader and test-retest reliability of magnetization transfer imaging (MTI) and T2 relaxometry in sciatic nerve MR neurography (MRN). Materials and methods In this prospective study, 21 healthy volunteers were examined three times on separate days by a standardized MRN protocol at 3 Tesla, consisting of an MTI sequence, a multi-echo T2 relaxometry sequence, and a high-resolution T2-weighted sequence. Magnetization transfer ratio (MTR), T2 relaxation time, and proton spin density (PSD) of the sciatic nerve were assessed by two independent observers, and both interreader and test-retest reliability for all readout parameters were reported by intraclass correlation coefficients (ICCs) and standard error of measurement (SEM). Results For the sciatic nerve, overall mean ± standard deviation MTR was 26.75 ± 3.5%, T2 was 64.54 ± 8.2 ms, and PSD was 340.93 ± 78.8. ICCs ranged between 0.81 (MTR) and 0.94 (PSD) for interreader reliability and between 0.75 (MTR) and 0.94 (PSD) for test-retest reliability. SEM for interreader reliability was 1.7% for MTR, 2.67 ms for T2, and 21.3 for PSD. SEM for test-retest reliability was 1.7% for MTR, 2.66 ms for T2, and 20.1 for PSD. Conclusions MTI and T2 relaxometry of the sciatic nerve are reliable and reproducible. The values of measurement imprecision reported here may serve as a guide for correct interpretation of quantitative MRN biomarkers in future studies. Key Points • Magnetization transfer imaging (MTI) and T2 relaxometry of the sciatic nerve are reliable and reproducible. • The imprecision that is unavoidably associated with different scans or different readers can be estimated by the here presented SEM values for the biomarkers T2, PSD, and MTR. • These values may serve as a guide for correct interpretation of quantitative MRN biomarkers in future studies and possible clinical applications.

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Section: Introductionmentioning

confidence: 99%

Reliability and reproducibility of sciatic nerve magnetization transfer imaging and T2 relaxometry

et al. 2021

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“…Magnetic resonance neurography is increasingly being accepted as the investigation of choice in lesions affecting the brachial plexus and the peripheral nerves [23].…”

Section: Discussionmentioning

confidence: 99%

Role of MRI in the diagnosis of adult traumatic and obstetric brachial plexus injury compared to intraoperative findings

Gad

Hussein

Omar

et al. 2020

Egypt J Radiol Nucl Med

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Background Brachial plexus injury occurs following birth trauma or adult trauma as well, surgical repair is important to regain upper limb function, and preoperative evaluation with MRI is important and considered the accurate and safe imaging modality. Thirty-seven patients with clinically suspected obstetric (15 patients) or adult traumatic (22 patients) brachial plexus injury were included in our study; all of them underwent MRI examination including T1WI, T2WI, STIR, DWIBS, 3D STIR SPACE, and MR myelography sequences. Results In obstetric cases, MRI sensitivity, specificity, and accuracy for preganglionic injury were 63%, 89%, and 82%, respectively, while for postganglionic lesions, MRI sensitivity, specificity, and accuracy were 60%, 99%, and 95%, respectively. In adult cases, MRI sensitivity, specificity, and accuracy for preganglionic injury were 96%, 95%, and 95% respectively, while for postganglionic injury, MRI sensitivity, specificity, and accuracy were 60%, 100%, and 99%, respectively. Conclusion MRI represents a safe, non-invasive, diagnostic modality having the multiplanar capability and better soft tissue characterization.

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“…43 Nerve transection may also be seen in penetrating traumas with sharp objects, such as glass, knives, bullets, and metallic shrapnel. 44 45 46 Myositis ossificans may also be considered with an insidious onset of neuropathic symptoms if in close proximity to a nerve distribution ( Fig. 12 ).…”

Section: Traumatic Nerve Injurymentioning

confidence: 99%

Imaging of Nerve Disorders in the Elbow

Gunio

Babaa

Bencardino

2022

Semin Musculoskelet Radiol

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Neuropathies of the elbow represent a spectrum of disorders that involve more frequently the ulnar, radial, and median nerves. Reported multiple pathogenic factors include mechanical compression, trauma, inflammatory conditions, infections, as well as tumor-like and neoplastic processes. A thorough understanding of the anatomy of these peripheral nerves is crucial because clinical symptoms and imaging findings depend on which components of the affected nerve are involved. Correlating clinical history with the imaging manifestations of these disorders requires familiarity across all diagnostic modalities. This understanding allows for a targeted imaging work-up that can lead to a prompt and accurate diagnosis.

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MR neurography in traumatic, non-obstetric paediatric brachial plexopathy

Abstract: • Brachial plexus injury in paediatric age group is a devastating injury. • The most common cause of this is trauma sustained during birth. • Other causes include road traffic accidents and blunt injury. • MR neurography has revolutionised the diagnosis of brachial plexopathy.

Cited by 10 publications

References 24 publications

Reliability and reproducibility of sciatic nerve magnetization transfer imaging and T2 relaxometry

Reliability and reproducibility of sciatic nerve magnetization transfer imaging and T2 relaxometry

Role of MRI in the diagnosis of adult traumatic and obstetric brachial plexus injury compared to intraoperative findings

Imaging of Nerve Disorders in the Elbow

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