Combine contrast-enhanced 3D T2-weighted short inversion time inversion recovery MR neurography with MR angiography at 1.5 T in the assessment of brachial plexopathy

Xu, Zhengdao; Zhang, Tonghua; Chen, Jianxin; Liu, Zong-bao; Wang, Tao; Hu, Yijiang; Zhang, Jiahui; Xue, Feifei

doi:10.1007/s10334-020-00867-z

Cited by 9 publications

(5 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 21 , 22 Recently, the application of ceMRN to visualize the peripheral nerves, especially the small branches, has attracted the attention of clinicians. 23 , 24 Robust signal suppression of soft tissues such as vessels and fat facilitates the imaging of anatomy and neuropathies. 14 – 16 In this study, we evaluated the feasibility and advantages of ceMRN in visualizing nerves and lesions in this region from both qualitative and quantitative perspectives and found that the median nerve, ulnar nerve, and small branches and nerve-associated lesions obtained excellent visualization and identification by ceMRN.…”

Section: Discussionmentioning

confidence: 99%

Improved visualization of median, ulnar nerves, and small branches in the wrist and palm using contrast-enhanced magnetic resonance neurography

Kang,

Wu,

Kong

et al. 2024

Ther Adv Neurol Disord

View full text Add to dashboard Cite

Background: Magnetic resonance imaging of peripheral nerves in the wrist and palm is challenging due to the small size, tortuous course, complex surrounding tissues, and accompanying blood vessels. The occurrence of carpal palmar lesions leads to edema, swelling, and mass effect, which may further interfere with the display and identification of nerves. Objective: To evaluate whether contrast-enhanced magnetic resonance neurography (ceMRN) improves the visualization of the morphology and pathology of the median, ulnar nerves, and their small branches in the wrist and palm. Design: An observational study. Methods: In total 57 subjects, including 36 volunteers and 21 patients with carpal palmar lesions, were enrolled and underwent ceMRN and non-contrast MRN (ncMRN) examination at 3.0 Tesla. The degree of vascular suppression, nerve visualization, diagnostic confidence, and lesion conspicuity was qualitatively assessed by two radiologists. Kappa statistics were obtained for inter-reader agreement. The signal-to-noise ratio, contrast ratio (CR), and contrast-to-noise ratio (CNR) of the median nerve were measured. The subjective ratings and quantitative measurements were compared between ncMRN and ceMRN. Results: The inter-reader agreement was excellent ( k > 0.8) for all qualitative assessments and visualization assessment of each nerve segment. Compared with ncMRN, ceMRN significantly improved vascular suppression in volunteers and patients (both p < 0.001). The ceMRN significantly enhanced nerve visualization of each segment (all p < 0.05) and diagnostic confidence in volunteers and patients (both p < 0.05). The ceMRN improved lesion conspicuity ( p = 0.003) in patients. Quantitatively, ceMRN had significantly higher CRs of nerve versus subcutaneous fat, bone marrow, and vessels and CNR of nerve versus vessel than ncMRN (all p < 0.05). Conclusion: The ceMRN significantly improves the visualization of peripheral nerves and pathology in the wrist and palm by robustly suppressing the signals of fat, bone marrow, and especially vessels in volunteers and patients.

show abstract

Section: Discussionmentioning

confidence: 99%

Improved visualization of median, ulnar nerves, and small branches in the wrist and palm using contrast-enhanced magnetic resonance neurography

Kang,

Wu,

Kong

et al. 2024

Ther Adv Neurol Disord

View full text Add to dashboard Cite

show abstract

“…27 A few recent studies have evaluated the utility of contrast-enhanced 3D MR neurography and showed improved signal-to-noise ratio due to better background signal suppression and increased conspicuity of smaller branches. 28,29 Unfortunately, this did not lead to an overall improvement in lesion detection or accuracy. 30,31 Diffusion-tensor imaging (DTI) is another newer MRI technique based on diffusion-weighted imaging techniques.…”

Section: Imaging Of the Ulnar Nervementioning

confidence: 99%

Multimodality imaging review of ulnar nerve pathologies

et al. 2023

View full text Add to dashboard Cite

The ulnar nerve is the second most commonly entrapped nerve after the median nerve. Although clinical evaluation and electrodiagnostic studies remain widely used for the evaluation of ulnar neuropathy, advancements in imaging have led to increased utilization of these newer / better imaging techniques in the overall management of ulnar neuropathy. Specifically, high-resolution ultrasonography of peripheral nerves as well as MRI has become quite useful in evaluating the ulnar nerve in order to better guide treatment. The caliber and fascicular pattern identified in the normal ulnar nerves are important distinguishing features from ulnar nerve pathology. The cubital tunnel within the elbow and Guyon’s canal within the wrist are important sites to evaluate with respect to ulnar nerve compression. Both acute and chronic conditions resulting in deformity, trauma as well as inflammatory conditions may predispose certain patients to ulnar neuropathy. Granulomatous diseases as well as both neurogenic and non-neurogenic tumors can also potentially result in ulnar neuropathy. Tumors around the ulnar nerve can also lead to mass effect on the nerve, particularly in tight spaces like the aforementioned canals. Although high-resolution ultrasonography is a useful modality initially, particularly as it can be helpful for dynamic evaluation, MRI remains most reliable due to its higher resolution. Newer imaging techniques like sonoelastography and microneurography, as well as nerve-specific contrast agents, are currently being investigated for their usefulness and are not routinely being used currently.

show abstract

“…Isovolumetric 3D sequences enabling reconstruction in different planes or multiplanar reformation (MPR) are essential techniques, especially in newborns [12]. MR neurography allows high-quality visualization of the BP and its branches [9,11,13,14]. It may be used in routine protocols in combination with other sequences (Fig.…”

Section: Bp Imaging Strategiesmentioning

confidence: 99%

“…Sequences with intravenous (i.v.) gadolinium injection are often used when tumor or infection is suspected, in postoperative cases, and for post-radiation injuries [7,9,14]. The entire BP examination often requires the use of an 8-or 16-channel neurovascular coil.…”

Section: Bp Imaging Strategiesmentioning

confidence: 99%

Magnetic resonance imaging of the brachial plexus. Part 1: Anatomical considerations, magnetic resonance techniques, and non-traumatic lesions

Szaro

McGrath

Ciszek

et al. 2022

European Journal of Radiology Open

View full text Add to dashboard Cite

MRI allows narrowing the list of differential diagnoses of brachial plexus lesions.• MRI helps to distinguish neoplastic infiltration from radiation neuropathy in T2-weighted images.• Differentiation between tumors, infection, postoperative conditions and post-radiation changes is possible with contrast.• MRI helps to determine the extent of the infection.• Diffusion tensor MRI is a promising method for brachial plexus assessment.

show abstract

Combine contrast-enhanced 3D T2-weighted short inversion time inversion recovery MR neurography with MR angiography at 1.5 T in the assessment of brachial plexopathy

Cited by 9 publications

References 32 publications

Improved visualization of median, ulnar nerves, and small branches in the wrist and palm using contrast-enhanced magnetic resonance neurography

Improved visualization of median, ulnar nerves, and small branches in the wrist and palm using contrast-enhanced magnetic resonance neurography

Multimodality imaging review of ulnar nerve pathologies

Magnetic resonance imaging of the brachial plexus. Part 1: Anatomical considerations, magnetic resonance techniques, and non-traumatic lesions

Contact Info

Product

Resources

About