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Mohammadi M, Roohollahi F, Mahmoudi MM, Mohammadi A, Mohamadi M, Kankam SB, Ghamari Khameneh A, Baghdasaryan D, Farahbakhsh F, Martin AR, Harrop J, Rahimi-Movaghar V. Correlation Between Pre-Operative Diffusion Tensor Imaging Indices and Post-Operative Outcome in Degenerative Cervical Myelopathy: A Systematic Review and Meta-Analysis. Global Spine J 2024:21925682231225634. [PMID: 38168663 DOI: 10.1177/21925682231225634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2024] Open
Abstract
STUDY DESIGN Systematic review. OBJECTIVES The correlation between pre-operative diffusion tensor imaging (DTI) metrics and post-operative clinical outcomes in patients with degenerative cervical myelopathy (DCM) has been widely investigated with different studies reporting varied findings. We conducted a systematic review to determine the association between DTI metric and clinical outcomes after surgery. METHODS We identified relevant articles that investigated the relationship between pre-operative DTI indices and post-operative outcome in DCM patients by searching PubMed/MEDLINE, Web of Science, Scopus, and EMBASE from inception until October 2023. In addition, quantitative synthesis and meta-analyses were performed. RESULTS FA was significantly correlated with postoperative JOA or mJOA across all age and follow up subgroups, changes observed in JOA or mJOA from preoperative to postoperative stages (Δ JOA or Δ mJOA) in subgroups aged 65 and above and in those with a follow-up period of 6 months or more, as well as recovery rate in all studies pooled together and also in the under-65 age bracket. Additionally, a significant correlation was demonstrated between recovery rate and ADC across all age groups. No other significant correlations were discovered between DTI parameters (MD, AD, and ADC) and post-operative outcomes. CONCLUSION DTI is a quantitative noninvasive evaluation tool that correlates with severity of DCM. However, the current evidence is still elusive regarding whether DTI metric is a validated tool for predicting the degree of post-operative recovery, which could potentially be useful in patient selection for surgery.
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Affiliation(s)
| | - Faramarz Roohollahi
- Sports Medicine Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
- Yas Spine Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohamad Mahdi Mahmoudi
- Department of General Surgery, Shahid Mofateh Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Aynaz Mohammadi
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mobin Mohamadi
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Samuel Berchi Kankam
- Image guided Neurosurgery Lab, Department of Neurosurgery, Brigham and Women Hospital, Harvard Medical School, Boston, MA, USA
- Brain Trauma Lab, Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Afshar Ghamari Khameneh
- Department of Radiology, Advanced Diagnostic and Interventional Radiology (ADIR) Research Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Farzin Farahbakhsh
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Allan R Martin
- Department of Neurosurgery, University of California Davis, Davis, CA, USA
| | - James Harrop
- Department of Neurological and Orthopedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Vafa Rahimi-Movaghar
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
- Department of Neurosurgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Universal Scientific Education and Research Network (USERN), Tehran, Iran
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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Baghdasaryan D, Albrecht M, Shahnazaryan M, Rosahl S. Real-Time Ultrasound Doppler Enhances Precision in Image-Guided Approaches to the Cerebellopontine Angle. World Neurosurg 2017; 107:482-487. [PMID: 28804044 DOI: 10.1016/j.wneu.2017.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 07/30/2017] [Accepted: 08/01/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To evaluate efficacy and reliability of intraoperative Doppler sonography in localizing the transverse and sigmoid sinuses during lateral suboccipital craniotomy. METHODS A 16-Mhz intraoperative micro-Doppler ultrasound (16Mhz, Multi-Dop pro, Compumedics, Singen, Germany) was applied to detect the medial border of the sigmoid sinus and the inferior border of the transverse sinus in 25 patients. Micro-Doppler measurements were compared with magnetic resonance- and computed tomography-based image guidance (Kolibri, Brainlab, Munich, Germany). Visual detectability of the sinuses with the operating microscope was also documented. RESULTS Inadvertent incision of the transverse or sigmoid sinuses did not occur in any patient when the 2 localizing methods have been used in combination. The mean mismatch of image-guided system and micro-Doppler was 2.64 mm (range, 0-6 mm; standard deviation, 1.55 mm). With the microscope the transverse sinus was invisible in 7 patients, the sigmoid sinus was visually undetectable in 1 case. The micro-Doppler indicated blood flow outside the visible borders of the sinuses in 5 patients. CONCLUSIONS A combination of image-guidance and micro-Doppler enhances the accuracy in localizing the margins of the transverse and sigmoid sinuses using the retrosigmoid approach, thus preventing inadvertent injury. The method could potentially be applied during other craniotomies involving the exposure of a venous sinus.
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Affiliation(s)
- Davit Baghdasaryan
- Department of Neurosurgery, HELIOS Klinikum Erfurt, Erfurt, Germany; Department of Neurosurgery, Yerevan State Medical University, Yerevan, Armenia.
| | - Marcel Albrecht
- Department of Neurosurgery, HELIOS Klinikum Erfurt, Erfurt, Germany
| | | | - Steffen Rosahl
- Department of Neurosurgery, HELIOS Klinikum Erfurt, Erfurt, Germany
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