High-resolution Compressed-sensing T1 Black-blood MRI

Guggenberger, Konstanze; Krafft, Axel J.; Ludwig, Ute; Vogel, Patrick; Elsheik, Samer; Raithel, Esther; Forman, Christoph; Dovi-Akué, Philippe; Urbach, Horst; Bley, Thorsten Alexander; Meckel, Stephan

doi:10.1007/s00062-019-00867-0

Cited by 23 publications

(16 citation statements)

References 38 publications

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“…Using black-blood VWI MRI, assessment of intracranial vessel wall structures with a mostly tortuous vessel course requires special technical features. Measurements were implemented on a dedicated sagittal 3D T1-weighted SPACE-sequence, optimized for intracranial VWI with ultra-high resolution due to the compressed-sensing technique as described previously [ 11 ]. In some cases, multiplanar reconstruction of high-resolution 3D VWI data is not sufficient to allow reliable measurement of the respective enhancing vessel segment.…”

Section: Discussionmentioning

confidence: 99%

“…MRI was performed on a 3-Tesla scanner (MAGNETOM Prisma, Siemens Healthineers). In addition to standard MRI sequences, a dedicated sagittal compressed-sensing (CS)-accelerated, high-resolution black-blood 3D T1-weighted sampling perfection with application-optimized contrasts using different flip angle evolution (SPACE-) sequence (T1 CS-SPACE prototype) optimized for intracranial VWI as described elsewhere [ 11 ] was acquired in all patients approximately 5 min after injection of a gadolinium-containing contrast agent (Dotagraf®, 0.5 mmol/ml). The sequence provides a whole-brain coverage with an isotropic resolution of 0.55 mm within a scan time of 5:50 min by applying a CS-sampling factor of 0.22.…”

Section: Methodsmentioning

confidence: 99%

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Vasa vasorum of proximal cerebral arteries after dural crossing — potential imaging confounder in diagnosing intracranial vasculitis in elderly subjects on black-blood MRI

et al. 2021

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Objectives Vessel wall enhancement (VWE) may be commonly seen on MRI images of asymptomatic subjects. This study aimed to characterize the VWE of the proximal internal carotid (ICA) and vertebral arteries (VA) in a non-vasculitic elderly patient cohort. Methods Cranial MRI scans at 3 Tesla were performed in 43 patients (aged ≥ 50 years) with known malignancy for exclusion of cerebral metastases. For vessel wall imaging (VWI), a high-resolution compressed-sensing black-blood 3D T1-weighted fast (turbo) spin echo sequence (T1 CS-SPACE prototype) was applied post gadolinium with an isotropic resolution of 0.55 mm. Bilateral proximal intradural ICA and VA segments were evaluated for presence, morphology, and longitudinal extension of VWE. Results Concentric VWE of the proximal intradural ICA was found in 13 (30%) patients, and of the proximal intradural VA in 39 (91%) patients. Mean longitudinal extension of VWE after dural entry was 13 mm in the VA and 2 mm in the ICA. In 14 of 39 patients (36%) with proximal intradural VWE, morphology of VWE was suggestive of the mere presence of vasa vasorum. In 25 patients (64 %), morphology indicated atherosclerotic lesions in addition to vasa vasorum. Conclusions Vasa vasorum may account for concentric VWE within the proximal 2 mm of the ICA and 13 mm of the VA after dural entry in elderly subjects. Concentric VWE in these locations should not be confused with large artery vasculitis. Distal to these segments, VWE may be more likely related to pathologic conditions such as vasculitis. Key Points • Vasa vasorum may account for concentric VWE within the proximal 2 mm of the ICA and 13 mm of the VA after dural entry in non-vasculitic elderly people. • Concentric enhancement within the proximal 2 mm of the intradural ICA and within the proximal 13 mm of the intradural VA portions should not be misinterpreted as vasculitis. • Distal of this, VWE is likely related to pathologic conditions, in case of concentric VWE suggestive of vasculitis.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Vasa vasorum of proximal cerebral arteries after dural crossing — potential imaging confounder in diagnosing intracranial vasculitis in elderly subjects on black-blood MRI

et al. 2021

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“…Our experience shows that basic settings do not always meet diagnostic requirements. Special attention should be paid to a resolution in the sub-millimeter range (if necessary with the aid of compressed sensing) 21 22 23 24 and sufficient suppression of flowing blood (if necessary with additional techniques such as a prepulse 25 and/or lowering of the refocusing angle 8 19 ). Further reading: 19 These T1-weighted sequences have a good contrast-to-noise ratio for barrier-disrupted lesions when imaging the brain parenchyma.…”

Section: Techniquesmentioning

confidence: 99%

Practical Aspects of novel MRI Techniques in Neuroradiology: Part 1–3D Acquisitions, Dixon Techniques and Artefact Reduction

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Billebaut

Bauer

et al. 2022

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Background Recently introduced MRI techniques offer improved image quality and facilitate examinations of patients even when artefacts are expected. They pave the way for novel diagnostic imaging strategies in neuroradiology. These methods include improved 3D imaging, movement and metal artefact reduction techniques as well as Dixon techniques. Methods Narrative review with an educational focus based on current literature research and practical experiences of different professions involved (physicians, MRI technologists/radiographers, physics/biomedical engineering). Different hardware manufacturers are considered. Results and Conclusions 3D FLAIR is an example of a versatile 3D Turbo Spin Echo sequence with broad applicability in routine brain protocols. It facilitates detection of smaller lesions and more precise measurements for follow-up imaging. It also offers high sensitivity for extracerebral lesions. 3D techniques are increasingly adopted for imaging arterial vessel walls, cerebrospinal fluid spaces and peripheral nerves. Improved hybrid-radial acquisitions are available for movement artefact reduction in a broad application spectrum. Novel susceptibility artefact reduction techniques for targeted application supplement previously established metal artefact reduction sequences. Most of these techniques can be further adapted to achieve the desired diagnostic performances. Dixon techniques allow for homogeneous fat suppression in transition areas and calculation of different image contrasts based on a single acquisition. Key points: Citation Format

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“…Similarly, Bassiouni et al [5] showed that only in 11 out of 51 patients with a completely encased ICA was the tumor adherent to the vessel adventitia. Increasingly sophisticated MRI techniques, such as "highresolution compressed-sensing T1 black-blood MRI," offers promising potential in the context of neurovascular vessel wall imaging [23,69,77]. This sequence has been proven to assess extent of tumor and vessel lumen or wall infiltration, mostly for venous structures, by replacing and combining the information that were previously derived from two separate sequences 2D TOF (Time of Flight) magnetic resonance angiography and post-contrast 3D MPRAGE (Magnetization Prepared RApid Gradient Echo) T1 MRI [23].…”

Section: Can Preoperative Imaging Differentiate Between Al Mefty Groups I and Ii?mentioning

confidence: 99%

“…Increasingly sophisticated MRI techniques, such as "highresolution compressed-sensing T1 black-blood MRI," offers promising potential in the context of neurovascular vessel wall imaging [23,69,77]. This sequence has been proven to assess extent of tumor and vessel lumen or wall infiltration, mostly for venous structures, by replacing and combining the information that were previously derived from two separate sequences 2D TOF (Time of Flight) magnetic resonance angiography and post-contrast 3D MPRAGE (Magnetization Prepared RApid Gradient Echo) T1 MRI [23]. Yin et al demonstrated the ability of slip interface imaging (SII), a recently developed magnetic resonance elastography-based technique, to predict the degree of meningioma-brain adhesion and pial invasion, allowing for improved prediction of surgical risk and tumor resectability [80].…”

Section: Can Preoperative Imaging Differentiate Between Al Mefty Groups I and Ii?mentioning

confidence: 99%

Surgical management of anterior clinoidal meningiomas: consensus statement on behalf of the EANS skull base section

et al. 2021

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Background The optimal management of clinoidal meningiomas (CMs) continues to be debated. Methods We constituted a task force comprising the members of the EANS skull base committee along with international experts to derive recommendations for the management of these tumors. The data from the literature along with contemporary practice patterns were discussed within the task force to generate consensual recommendations. Results and conclusion This article represents the consensus opinion of the task force regarding pre-operative evaluations, patient’s counselling, surgical classification, and optimal surgical strategy. Although this analysis yielded only Class B evidence and expert opinions, it should guide practitioners in the management of patients with clinoidal meningiomas and might form the basis for future clinical trials.

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High-resolution Compressed-sensing T1 Black-blood MRI

Cited by 23 publications

References 38 publications

Vasa vasorum of proximal cerebral arteries after dural crossing — potential imaging confounder in diagnosing intracranial vasculitis in elderly subjects on black-blood MRI

Vasa vasorum of proximal cerebral arteries after dural crossing — potential imaging confounder in diagnosing intracranial vasculitis in elderly subjects on black-blood MRI

Practical Aspects of novel MRI Techniques in Neuroradiology: Part 1–3D Acquisitions, Dixon Techniques and Artefact Reduction

Surgical management of anterior clinoidal meningiomas: consensus statement on behalf of the EANS skull base section

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