Kinematic magnetic resonance imaging study of the brain stem and cervical cord by dynamic neck motion

Mališ, Miloš; Georgievski, B; Milić, I; Mijatović, A; Kovačević, V; Lazić, Dragoslav; Kapor, Slobodan; Marinković, Slobodan

doi:10.5603/fm.a2016.0016

Cited by 3 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, MRI examination in dynamic position showed cervical flexion, widening of spinal canal, shorter distance between slope and odontoid process, and narrowing of spinal canal in cervical extension position. The slope is far from the odontoid process [13,14], which adversely affects the measurement of CPA or CXA. Malformation or morphological variation of the odontoid process is quite common, and the integrity of the odontoid process is essential for the stability and proper function of the atlantoaxial joint [15,16].…”

Section: Conversationmentioning

confidence: 99%

“…Second, we measured the range values of CXA, CDA and CPA in cervical MRI dynamic position of volunteers. The measurement of CXA and CDA can be affected by the upward movement of odontoid process in patients with common basilar indentation, the backward movement of odontoid process in patients with atlantoaxial dislocation, and other congenital malformations, alveolar fracture or dislocation, and posterior axis osteosclerosis [13]. Third, Magnetic Resonance Imaging (MRI) for assessing maxillary gap and the subluxation and occipital -cervical spine in the C2 region with CT tomography as well as a variety of subluxation, in evaluating slope -dentate clearance, the erosion of spines and atlas occipital aspects, MR than CT tomography [20] effectively, this measuring Angle may be produced for us check technical error.…”

Section: Conversationmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Dynamic MRI Examination of Cervical Spine on Stability of Three Angles (CPA, CXA, CDA)

S¹

2021

COS

View full text Add to dashboard Cite

Objective:To investigate the influence of cervical dynamic MRI on the stability of CPA Angle, and whether it has more clinical diagnostic value compared with CXA and CDA Angle.1.2. Methods: 15 healthy clinical subjects underwent MRI examination in neutral position, hyperextension position and hyperflexion position at the same time. The value of three angles (CPA, CXA and CDA) were measured, and the t test was used to compare the changes of different positions. Results:The paired T-test showed that CPA had no significant difference in Angle measurement from neutral cervical vertebra to hyperextension cervical vertebra, and was significantly stable to CXA and CDA. Secondly, CPA changed the least from neutral position to overflexion position, followed by CXA, and CDA changed the most. Conclusion:CPA is the least sensitive and most stable to cervical curvature. Especially, the difference between neutral position and overextension position is the least, and the stability is obviously better than CXA and CDA.

show abstract

Section: Conversationmentioning

confidence: 99%

Section: Conversationmentioning

confidence: 99%

Effect of Dynamic MRI Examination of Cervical Spine on Stability of Three Angles (CPA, CXA, CDA)

S¹

2021

COS

View full text Add to dashboard Cite

show abstract

“…During head and neck flexion and extension, it has been noted that the pons normally deviates by 2 mm from the midline, as the clivo-vertebral angle changes from 9° to 22° [13], [14]. However, there are also reports that during flexion and extension the clivo-pontine distance did not statistically differ significantly at a group level in normal participants, despite a range of changes from 0.1–1.6 mm being reported [15].…”

Section: Introductionmentioning

confidence: 99%

The Design of Brainstem Interfaces: Characterisation of Physiological Artefacts and Implications for Closed-loop Algorithms

Deli

Toth

Zamora

et al. 2023

Preprint

View full text Add to dashboard Cite

Surgical neuromodulation through implantable devices allows for stimulation delivery to subcortical regions, crucial for symptom control in many debilitating neurological conditions. Novel closed-loop algorithms deliver therapy tailor-made to endogenous physiological activity, however rely on precise sensing of signals such as subcortical oscillations. The frequency of such intrinsic activity can vary depending on subcortical target nucleus, while factors such as regional anatomy may also contribute to variability in sensing signals. While artefact parameters have been explored in more standard and commonly used targets (such as the basal ganglia, which are implanted in movement disorders), characterisation in novel candidate nuclei is still under investigation. One such important area is the brainstem, which contains nuclei crucial for arousal and autonomic regulation. The brainstem provides additional implantation targets for treatment indications in disorders of consciousness and sleep, yet poses distinct anatomical challenges compared to central subcortical targets. Here we investigate the region-specific artefacts encountered during activity and rest while streaming data from brainstem implants with a cranially mounted device in two patients. Such artefacts result from this complex anatomical environment and its interactions with physiological parameters such as head movement and cardiac functions. The implications of the micromotion-induced artefacts, and potential mitigation, are then considered for future closed-loop stimulation methods.

show abstract

The Design of Brainstem Interfaces: Characterisation of Physiological Artefacts and Implications for Closed-loop Algorithms

Deli

Toth

Zamora

et al. 2023

2023 11th International IEEE/EMBS Conference on Neural Engineering (NER)

View full text Add to dashboard Cite

Kinematic magnetic resonance imaging study of the brain stem and cervical cord by dynamic neck motion

Abstract: Background: The aim was to examine the position of the brain stem and cervical (Folia Morphol 2016; 75, 4: 439-447)

Cited by 3 publications

References 34 publications

Effect of Dynamic MRI Examination of Cervical Spine on Stability of Three Angles (CPA, CXA, CDA)

Effect of Dynamic MRI Examination of Cervical Spine on Stability of Three Angles (CPA, CXA, CDA)

The Design of Brainstem Interfaces: Characterisation of Physiological Artefacts and Implications for Closed-loop Algorithms

The Design of Brainstem Interfaces: Characterisation of Physiological Artefacts and Implications for Closed-loop Algorithms

Contact Info

Product

Resources

About