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Mri of the spine

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https://www.readbyqxmd.com/read/29332239/which-parameters-are-relevant-in-sagittal-balance-analysis-of-the-cervical-spine-a-literature-review
#1
REVIEW
Fong Poh Ling, T Chevillotte, A Leglise, W Thompson, C Bouthors, Jean-Charles Le Huec
INTRODUCTION: Cervical spine is part of the spine with the most mobility in the sagittal plane. It is important for surgeons to have reliable, simple and reproducible parameters to analyse the cervical. MATERIAL AND METHOD: This study is a systematic review and a critique of current parameters to help improve the study of cervical spinal balance. We conducted a systematic search of PUBMED/MEDLINE for literature published since January 2014. Only studies written in English and containing abstracts were considered for inclusion...
January 13, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29332032/value-of-conventional-mri-and-diffusion-tensor-imaging-parameters-in-predicting-surgical-outcome-in-patients-with-degenerative-cervical-myelopathy
#2
Canghai Shen, Haiwei Xu, Baoshan Xu, Xiaoguang Zhang, Xiaofeng Li, Qiang Yang, Xinlong Ma
BACKGROUND: In addition to conventional magnetic resonance imaging (cMRI), diffusion tensor imaging (DTI) has been investigated as a potential diagnostic and prognostic tool for patients with degenerative cervical myelopathy (DCM). OBJECTIVE: To assess the efficacy of cMRI and DTI parameters in prediction of surgical outcome in DCM patients. METHODS: One hundred and forty-two patients with DCM who underwent presurgical cMRI and DTI of the cervical spine were included...
December 29, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29328004/thoracolumbar-injury-classification-and-severity-score-in-children-a-reliability-study
#3
Ross L Dawkins, Joseph H Miller, Omar I Ramadan, Michael C Lysek, Elizabeth N Kuhn, Brandon G Rocque, Michael J Conklin, R Shane Tubbs, Beverly C Walters, Bonita S Agee, Curtis J Rozzelle
OBJECTIVE There are many classification systems for injuries of the thoracolumbar spine. The recent Thoracolumbar Injury Classification and Severity Score (TLICS) has been shown to be a reliable tool for adult patients. The aim of this study was to assess the reliability of the TLICS system in pediatric patients. The validity of the TLICS system is assessed in a companion paper. METHODS The medical records of pediatric patients with acute, traumatic thoracolumbar fractures at a single Level 1 trauma center were retrospectively reviewed...
January 12, 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29321098/spondylodiscitis-diagnosis-and-treatment-options
#4
Christian Herren, Norma Jung, Miguel Pishnamaz, Marianne Breuninger, Jan Siewe, Rolf Sobottke
BACKGROUND: A recent population-based study from Denmark showed that the incidence of spondylodiscitis rose from 2.2 to 5.8 per 100 000 persons per year over the period 1995-2008; the age-standardized incidence in Germany has been estimated at 30 per 250 000 per year on the basis of data from the Federal Statistical Office (2015). The early diagnosis and treatment of this condition are essential to give the patient the best chance of a good outcome, but these are often delayed because it tends to present with nonspecific manifestations, and fever is often absent...
December 25, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/29315127/tidemark-avulsions-are-a-predominant-form-of-endplate-irregularity
#5
Britta Berg-Johansen, Deeptee Jain, Ellen C Liebenberg, Aaron J Fields, Thomas M Link, Conor W O'Neill, Jeffrey C Lotz
STUDY DESIGN: Descriptive histologic and MRI study of human cadaveric spines. OBJECTIVE: To identify and characterize common endplate pathologies to form a histologic foundation for an etiology-based classification system. SUMMARY OF BACKGROUND DATA: Irregularities at the spinal disc-vertebra interface are associated with back pain and intervertebral disc herniation injuries. However, there is currently a lack of consensus regarding terminology for classification...
January 8, 2018: Spine
https://www.readbyqxmd.com/read/29315118/characteristics-of-cervical-spine-motion-in-different-types-of-cervical-alignment-kinematic-mri-study
#6
Kittipong Sessumpun, Permsak Paholpak, Kevork N Hindoyan, Koji Tamai, Thananit Sangkomkamhang, Zorica Buser, Jeffrey C Wang
STUDY DESIGN: Retrospective study. OBJECTIVE: To evaluate how each type of sagittal cervical alignment affects the motion of the upper and subaxial cervical spine using kinematic magnetic resonance imaging. SUMMARY OF BACKGROUND DATA: The sagittal malalignment of the cervical spine from degeneration in the subaxial cervical spine reflects a disruption in the kinematic properties of the cervical spine and affects the motion of adjacent segments...
January 8, 2018: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29313118/proton-density-fat-fraction-pdff-mri-for-differentiation-of-benign-and-malignant-vertebral-lesions
#7
Frederic Carsten Schmeel, Julian Alexander Luetkens, Peter Johannes Wagenhäuser, Michael Meier-Schroers, Daniel Lloyd Kuetting, Andreas Feißt, Jürgen Gieseke, Leonard Christopher Schmeel, Frank Träber, Hans Heinz Schild, Guido Matthias Kukuk
OBJECTIVES: To investigate whether proton density fat fraction (PDFF) measurements using a six-echo modified Dixon sequence can help to differentiate between benign and malignant vertebral bone marrow lesions. METHODS: Sixty-six patients were prospectively enrolled in our study. In addition to conventional MRI at 3.0-Tesla including at least sagittal T2-weighted/spectral attenuated inversion recovery and T1-weighted sequences, all patients underwent a sagittal six-echo modified Dixon sequence of the spine...
January 8, 2018: European Radiology
https://www.readbyqxmd.com/read/29312473/central-nervous-system-gadolinium-accumulation-in-patients-undergoing-periodical-contrast-mri-screening-for-hereditary-tumor-syndromes
#8
Evelynn Vergauwen, Anne-Marie Vanbinst, Carola Brussaard, Peter Janssens, Dieter De Clerck, Michel Van Lint, Anne C Houtman, Olaf Michel, Kathelijn Keymolen, Bieke Lefevere, Susanne Bohler, Dirk Michielsen, Anna C Jansen, Vera Van Velthoven, Sven Gläsker
Background: Patients with hereditary tumor syndromes undergo periodical magnetic resonance imaging (MRI) screening with Gadolinium contrast. Gadolinium accumulation has recently been described in the central nervous system after repeated administrations. The prevalence and rate of accumulation in different subgroups of patients are unknown. Neither are the mechanism nor clinical impact. This may cause uncertainty about the screening. To explore the prevalence and rate of Gadolinium accumulation in different subgroups, we retrospectively analyzed MRIs of patients with von Hippel-Lindau disease (VHL) and Tuberous Sclerosis Complex (TSC)...
2018: Hereditary Cancer in Clinical Practice
https://www.readbyqxmd.com/read/29302913/principles-and-applications-of-the-balanced-steady-state-free-precession-sequence-in-small-animal-low-field-mri
#9
Mario Ricciardi
Magnetic resonance imaging (MRI) in small animal practice is largely based on classic two-dimensional spin-echo, inversion recovery and gradient-echo sequences which are largely limited by low spatial resolution, especially in low-field (LF)-MRI scanners. Nowadays, however, the availability of volumetric sequences can open new perspectives and enhance the diagnostic potential of this imaging modality. Balanced steady-state free precession (bSSFP) is a three-dimensional gradient-echo sequence in which image contrast is given by the ratio of T2 and T1, resulting in low soft-tissue signal, poor cerebral grey/white matter distinction and a bright signal from free fluid and fat...
January 4, 2018: Veterinary Research Communications
https://www.readbyqxmd.com/read/29301172/myelography-in-the-assessment-of-degenerative-lumbar-scoliosis-and-its-influence-on-surgical-management
#10
George McKay, Peter Alexander Torrie, Wendy Bertram, Priyan Landham, Stephen Morris, John Hutchinson, Roland Watura, Ian Harding
OBJECTIVE: Myelography has been shown to highlight foraminal and lateral recess stenosis more readily than computed tomography (CT) or magnetic resonance imaging (MRI). It also has the advantage of providing dynamic assessment of stenosis in the loaded spine. The advent of weight-bearing MRI may go some way towards improving assessment of the loaded spine and is less invasive, however availability remains limited. This study evaluates the potential role of myelography and its impact upon surgical decision making...
December 2017: Korean Journal of Spine
https://www.readbyqxmd.com/read/29299101/rib-head-dislocation-causing-spinal-canal-stenosis-in-a-child-with-neurofibromatosis-type-1
#11
Alan M Chen, Jeffrey B Neustadt, Jennifer Neville Kucera
A 10-year-old female with neurofibromatosis type 1 and severe dystrophic scoliosis presented with a two-month history of difficulty ambulating due to low back pain. The patient did not have any neurological symptoms. MRI of the thoracolumbar spine demonstrated subluxation of the right posterior tenth and eleventh ribs through their respective neural foramina, with mild mass effect on the thecal sac without abnormal cord signal or cord compression. Groups of neurofibromas were present along the right ribs and paravertebral soft tissues around these levels...
August 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29290127/image-guidance-in-transdiscal-fixation-for-high-grade-spondylolisthesis-in-adults-with-correct-spinal-balance
#12
Juan Delgado-Fernández, Paloma Pulido, María Ángeles García-Pallero, Guillermo Blasco, Natalia Frade-Porto, Rafael G Sola
OBJECTIVE Spondylolisthesis is a prevalent spine disease that recent studies estimate could be detected in 9% of the population. High-grade spondylolisthesis (HGS), however, is much less frequent, which makes it difficult to develop a general recommendation for its treatment. Posterior transdiscal fixation was proposed in 1994 for HGS, and the use of spine navigation could make this technique more accessible and reduce the morbidity associated with the procedure. The purpose of this study was to present a case series involving adult patients with HGS and correct spinal alignment who were treated with transdiscal pedicle screw placement guided with neuronavigation and compare the results to those achieved previously without image guidance...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29288983/automatic-spinal-cord-localization-robust-to-mri-contrasts-using-global-curve-optimization
#13
Charley Gros, Benjamin De Leener, Sara M Dupont, Allan R Martin, Michael G Fehlings, Rohit Bakshi, Subhash Tummala, Vincent Auclair, Donald G McLaren, Virginie Callot, Julien Cohen-Adad, Michaël Sdika
During the last two decades, MRI has been increasingly used for providing valuable quantitative information about spinal cord morphometry, such as quantification of the spinal cord atrophy in various diseases. However, despite the significant improvement of MR sequences adapted to the spinal cord, automatic image processing tools for spinal cord MRI data are not yet as developed as for the brain. There is nonetheless great interest in fully automatic and fast processing methods to be able to propose quantitative analysis pipelines on large datasets without user bias...
December 6, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/29281728/vertebral-cross-sectional-growth-a-predictor-of-vertebral-wedging-in-the-immature-skeleton
#14
Ervin Poorghasamians, Patricia C Aggabao, Tishya A L Wren, Skorn Ponrartana, Vicente Gilsanz
The degree of vertebral wedging, a key structural characteristic of spinal curvatures, has recently been found to be negatively related to vertebral cross-sectional area (CSA). The purpose of this longitudinal study was to examine the relation between vertebral cross-sectional growth and vertebral wedging progression within the immature lumbar spine. Using magnetic resonance imaging (MRI), we analyzed the potential association between increases in lumbar vertebral CSA and changes in L5 vertebral wedging in 27 healthy adolescent girls (ages 9-13 years) twice within a two-year period...
2017: PloS One
https://www.readbyqxmd.com/read/29281150/to-distinguish-flexible-and-rigid-lumbar-curve-from-mri-texture-analysis-in-adolescent-idiopathic-scoliosis-a-feasibility-study
#15
Claudia Chevrefils, Delphine Périé, Stefan Parent, Farida Cheriet
BACKGROUND: Imaging in side bending, supine, traction, fulcrum, and push prone are examples of methods used to evaluate the curve reduction of scoliotic spine. However, being able to determine spine curve flexibility from MRI would eliminate the need of additional X-ray radiation related to radiograph acquisition in side-bending. PURPOSE/HYPOTHESIS: To find specific texture features of lumbar postural muscles on MRI that can distinguish flexible from rigid lumbar scoliotic curves...
December 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29280930/diagnostic-benefits-of-axial-loaded-mri-over-recumbent-mri-in-obese-lbp-patients
#16
Tomasz Lorenc, Piotr Palczewski, Damian Wójcik, Wojciech Glinkowski, Marek Gołębiowski
STUDY DESIGN: Single center before-after case series study. OBJECTIVES: To determine when and in which kind of lower back pathologies, axial-loaded MRI provides additional benefit over recumbent MRI SUMMARY AND BACKGROUND DATA.: Systems simulating physiological axial loading of the spine in patients examined in the supine position have recently been introduced in clinical practice. However, indications for examinations with axial loading have yet to be clearly specified...
December 26, 2017: Spine
https://www.readbyqxmd.com/read/29280455/a-detailed-dosimetric-analysis-of-spinal-cord-tolerance-in-high-dose-spine-radiosurgery
#17
Evangelia Katsoulakis, Andrew Jackson, Brett Cox, Michael Lovelock, Yoshiya Yamada
OBJECTIVE: Dose-volume tolerance of the spinal cord (SC) in spinal stereotactic radiosurgery (SRS) is difficult to define because radiation myelitis rates are low, and published reports document cases of myelopathy but do not account for the total number of patients treated at given dose-volume combinations who do not have myelitis. This study reports SC toxicity from single-fraction spinal SRS and presents a comprehensive atlas of the incidence of adverse events to examine dose-volume predictors...
November 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29279743/prevalence-of-lumbosacral-transitional-vertebra-in-individuals-with-low-back-pain-evaluation-using-plain-radiography-and-magnetic-resonance-imaging
#18
Asra Shaikh, Sohail Ahmed Khan, Munawar Hussain, Sadia Soomro, Hatem Adel, Syed Omair Adil, Farheen Huda, Usman Khanzada
Study Design: Descriptive cross-sectional study. Purpose: To determine the frequency of lumbosacral transitional vertebrae (LSTV) in patients with low back pain (LBP) and the role of iliolumbar ligament (ILL) origin from L5 in LSTV cases. Overview of Literature: Transitional vertebrae are developmental variants of the spine. LSTV is a common congenital abnormality, and failure to recognize this anomaly may result in serious consequences during surgery...
December 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/29279698/pazopanib-and-statin-induced-rhabdomyolysis
#19
Jennifer M Logue, Bahram Kiani, Rhonda L Bitting
Background: The VEGF inhibitor pazopanib is a widely used first-line therapy for the treatment of advanced renal cell carcinoma. Potential drug-drug interactions and toxicities may be underrecognized. Case Presentation: A 73-year-old woman with metastatic renal cell carcinoma on treatment with pazopanib presented with progressive inability to ambulate. The initial concern was for metastasis to the spine. However, MRI of the spine revealed diffuse muscle edema with no metastatic deposits or lytic lesions...
September 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/29279162/do-modic-changes-disc-degeneration-translation-and-angular-motion-affect-facet-osteoarthritis-of-the-lumbar-spine
#20
Permsak Paholpak, Emin Dedeogullari, Christopher Lee, Koji Tamai, Kaku Barkoh, Kittipong Sessumpun, Jeffrey C Wang, Zorica Buser
The objective of the study is to identified the correlation between Modic changes (MCs), disc degeneration, motions (translation and angulation) and facet osteoarthritis in lumbar spine. 425 patients who underwent multi-positional lumbar MRI were reviewed. A total of 2250 lumbar spinal segments in neutral position were evaluated for MCs, disc degeneration grading, translation and angulation motion, and facet osteoarthritis. The chi-square test, Kruskal-Wallis, Mann-Whitney U test, Pearson's correlation and linear regression were used to test for statistically significant difference between parameters...
January 2018: European Journal of Radiology
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