Assessment of Segmental Spinal Instability Using Magnetic Resonance Imaging

1993 ◽  
pp. 35-44 ◽  
Author(s):  
Tomoaki Toyone ◽  
Hideshige Moriya ◽  
Hiroshi Kitahara ◽  
Kazuhisa Takahashi ◽  
Masatsune Yamagata ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spinal Instability ◽  
Resonance Imaging

scholarly journals Spinal epidural abscess: appearance on magnetic resonance imaging as a guide to surgical management

2004 ◽  
Vol 17 (6) ◽  
pp. 1-6 ◽  
Author(s):  
Jonathon F. Parkinson ◽  
Lali H. S. Sekhon
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Epidural Abscess ◽  
Surgical Approaches ◽  
Spinal Instability ◽  
Spinal Epidural Abscess ◽  
Resonance Imaging ◽  
Decompressive Laminectomy ◽  
Spinal Epidural ◽  
Invasive Techniques

Spinal epidural abscess is associated with considerable rates of morbidity and mortality despite its infrequent occurrence. Advances in magnetic resonance (MR) imaging technology have allowed easier diagnosis of this potentially devastating condition. It is also possible to predict the intraoperative appearance of each case of spinal epidural abscess prior to the procedure, based on the MR findings. Surgical treatment of this condition usually involves extensive decompressive laminectomy, which predisposes patients to spinal instability and deformity. Recent advances in surgical approaches to spinal epidural abscess have included the institution of less invasive techniques to manage this condition, including saline washes of the epidural space through catheters introduced via limited laminotomy. The cases reported here illustrate the ability to predict the intraoperative findings in patients with spinal epidural abscess, and to adjust the surgical approach accordingly to minimize the extent of potentially destabilizing procedures without impinging on the effectiveness of treatment.

Dynamic Magnetic Resonance Imaging Assisted Diagnosis of Occult Spinal Instability—A New Useful Approach

2020 ◽  
Vol 10 (11) ◽  
pp. 2649-2653
Author(s):  
Alena Kobesova ◽  
Pavel Kolar ◽  
Ross Andel ◽  
Martin Kyncl ◽  
Jan Stulik ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Muscle Activation ◽  
Lumbar Disc ◽  
Imaging Study ◽  
Dynamic Mri ◽  
Spinal Instability ◽  
Final Decision ◽  
Resonance Imaging ◽  
Mri Scans

Magnetic resonance imaging (MRI) has become a global standard for confirming lumbar disc pathology, providing exceptionally detailed anatomical images. However, standard MRI taken in the typical relaxed supine position does not allow for visualization and measurement of the effects of muscle activation and movement on spinal structures. This paper describes modified dynamic MRI assessment to exploit muscular dyssynergy causing lumbar disc lesion and lumbosacral degeneration in a 30-year old man experiencing low back pain (LBP) for five years. Dynamic MRI performed during dynamic muscle activity revealed pathology that was not seen on MRI scans taken with the patient relaxed—sacral tilting and occult nerve root impingement by the L4–L5 disc. This modified imaging study was critical for a final decision to perform a surgery but also to set up appropriate rehabilitation strategy after the surgery. The paper discusses the importance of using dynamic MRI in identifying spinal movements, which may contribute to symptom presentation, and role of integrated structural and functional assessment in its treatment approach.

Functional information from magnetic resonance imaging

1995 ◽  
Vol 53 ◽  
pp. 84-85
Author(s):  
Alan P. Koretsky ◽  
Afonso Costa e Silva ◽  
Yi-Jen Lin
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Cancer Biology ◽  
Imaging Modality ◽  
Magnetic Resonance Images ◽  
Great Success ◽  
Functional Information ◽  
Resonance Imaging ◽  
High Resolution Mri

Magnetic resonance imaging (MRI) has become established as an important imaging modality for the clinical management of disease. This is primarily due to the great tissue contrast inherent in magnetic resonance images of normal and diseased organs. Due to the wide availability of high field magnets and the ability to generate large and rapidly switched magnetic field gradients there is growing interest in applying high resolution MRI to obtain microscopic information. This symposium on MRI microscopy highlights new developments that are leading to increased resolution. The application of high resolution MRI to significant problems in developmental biology and cancer biology will illustrate the potential of these techniques.In combination with a growing interest in obtaining high resolution MRI there is also a growing interest in obtaining functional information from MRI. The great success of MRI in clinical applications is due to the inherent contrast obtained from different tissues leading to anatomical information.

Functional Magnetic Resonance Imaging Measures of Blood Flow Patterns in the Human Auditory Cortex in Response to Sound

1998 ◽  
Vol 41 (3) ◽  
pp. 538-548 ◽  
Author(s):  
Sean C. Huckins ◽  
Christopher W. Turner ◽  
Karen A. Doherty ◽  
Michael M. Fonte ◽  
Nikolaus M. Szeverenyi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Speech Stimuli ◽  
Complex Stimuli ◽  
Scanning Session ◽  
Auditory Research

Functional Magnetic Resonance Imaging (fMRI) holds exciting potential as a research and clinical tool for exploring the human auditory system. This noninvasive technique allows the measurement of discrete changes in cerebral cortical blood flow in response to sensory stimuli, allowing determination of precise neuroanatomical locations of the underlying brain parenchymal activity. Application of fMRI in auditory research, however, has been limited. One problem is that fMRI utilizing echo-planar imaging technology (EPI) generates intense noise that could potentially affect the results of auditory experiments. Also, issues relating to the reliability of fMRI for listeners with normal hearing need to be resolved before this technique can be used to study listeners with hearing loss. This preliminary study examines the feasibility of using fMRI in auditory research by performing a simple set of experiments to test the reliability of scanning parameters that use a high resolution and high signal-to-noise ratio unlike that presently reported in the literature. We used consonant-vowel (CV) speech stimuli to investigate whether or not we could observe reproducible and consistent changes in cortical blood flow in listeners during a single scanning session, across more than one scanning session, and in more than one listener. In addition, we wanted to determine if there were differences between CV speech and nonspeech complex stimuli across listeners. Our study shows reproducibility within and across listeners for CV speech stimuli. Results were reproducible for CV speech stimuli within fMRI scanning sessions for 5 out of 9 listeners and were reproducible for 6 out of 8 listeners across fMRI scanning sessions. Results of nonspeech complex stimuli across listeners showed activity in 4 out of 9 individuals tested.

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