Preoperative patient selection with magnetic resonance imaging, computed tomography, and electroencephalography: does the test predict outcome after cervical surgery?

2009 ◽  
Vol 11 (2) ◽  
pp. 119-129 ◽  
Author(s):  
Praveen V. Mummaneni ◽  
Michael G. Kaiser ◽  
Paul G. Matz ◽  
Paul A. Anderson ◽  
Michael Groff ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Preoperative Imaging ◽  
Class Iii ◽  
Resonance Imaging ◽  
Level Of Evidence ◽  
Spinal Cord Atrophy ◽  
Ct Myelography ◽  
Cervical Surgery ◽  
T2 Hyperintensity

Object The objective of this systematic review was to use evidence-based medicine to assess whether preoperative imaging or electromyography (EMG) predicts surgical outcomes in patients undergoing cervical surgery. Methods The National Library of Medicine and Cochrane Database were queried using MeSH headings and keywords relevant to the preoperative imaging and EMG. Abstracts were reviewed after which studies meeting inclusion criteria were selected. The guidelines group assembled an evidentiary table summarizing the quality of evidence (Classes I–III). Disagreements regarding the level of evidence were resolved through an expert consensus conference. The group formulated recommendations that contained the degree of strength based on the Scottish Intercollegiate Guidelines network. Validation was done through peer review by the Joint Guidelines Committee of the American Association of Neurological Surgeons/Congress of Neurological Surgeons. Results Preoperative MR imaging and CT myelography are successful in confirming clinical radiculopathy (Class II). Multilevel T2 hyperintensity, T1 focal hypointensity combined with T2 focal hyperintensity, and spinal cord atrophy each convey a poor prognosis (Class III). There is conflicting data concerning whether focal T2 hyperintensity or cervical stenosis are associated with a worse outcome. Electromyography has mixed utility in predicting outcome (Class III). Conclusions Magnetic resonance imaging or CT myelography are important for preoperative assessment. Magnetic resonance imaging may be helpful in assessing prognosis, whereas EMG has mixed utility in assessing outcome.

One-year experience of government-funded magnetic resonance imaging prior to prostate biopsy: A case for omitting biopsy in men with a negative magnetic resonance imaging

2021 ◽  
pp. 205141582110043
Author(s):  
Hanna J El-Khoury ◽  
Niranjan J Sathianathen ◽  
Yuxin Jiao ◽  
Reza Farzan ◽  
Dennis Gyomber ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Prostate Cancer ◽  
Magnetic Resonance ◽  
Prostate Biopsy ◽  
Multivariable Analysis ◽  
Transrectal Ultrasound ◽  
Resonance Imaging ◽  
Retrospective Case ◽  
Level Of Evidence ◽  
Clinically Significant

Objectives: This study aimed to characterise the accuracy of multiparametric magnetic resonance imaging (mpMRI) as an adjunct to prostate biopsy, and to assess the effect of the new Australian Medicare rebate on practice at a metropolitan public hospital. Patients and methods: We identified patients who underwent transrectal ultrasound (TRUS)-guided prostate biopsy at a single institution over a two-year period. Patients were placed into two groups, depending upon whether their consent was obtained before or after the introduction of the Australian Medicare rebate for mpMRI. We extracted data on mpMRI results and TRUS-guided biopsy histopathology. Descriptive statistics were used to demonstrate baseline patient characteristics as well as MRI and histopathology results. Results: A total of 252 patients were included for analysis, of whom 128 underwent biopsy following the introduction of the Medicare rebate for mpMRI. There was a significant association between Prostate Imaging Reporting and Data System v2 (PI-RADS) classification and the diagnosis of clinically significant prostate cancer ( p<0.01). Only one man with PI-RADS ⩽2 was found to have clinically significant prostate cancer. Four men with a PI-RADS 3 lesion were found to have clinically significant cancer. A PI-RADS 4 or 5 lesion was significantly associated with the diagnosis of clinically significant cancer on multivariable analysis. Conclusion: mpMRI is an important adjunct to biopsy in the diagnosis of clinically significant prostate cancer. Our findings support the safety of omitting/delaying prostate biopsy in men with negative mpMRI. Level of evidence: Level 3 retrospective case-control study.

Radiographic Staging of Colorectal Cancer

2019 ◽  
Author(s):  
Maurits P. Engbersen ◽  
Max J. Lahaye ◽  
Regina G.H. Beets-Tan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Colorectal Cancer ◽  
Computed Tomography ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
Tumor Staging ◽  
Tnm Staging ◽  
Preoperative Imaging ◽  
Resonance Imaging ◽  
Colon And Rectal Cancer

Imaging increasingly plays an important role in selecting the most optimal treatment for patients with colon and rectal cancer. While in colon cancer, computed tomography (CT) remains the modality of choice for local and distant staging, in patients with rectal cancer magnetic resonance imaging (MRI) is the main modality and mandatory for local staging. Endoluminal rectal ultrasound (ERUS) is the preferred staging method for superficial rectal tumors. This chapter addresses the current role of various imaging modalities in colorectal tumor staging. This review contains 4 figures and 50 references. Key words: Preoperative imaging, Colorectal cancer, Magnetic resonance imaging, Diffusion weighted MRI, Computed tomography, Mesorectal fascia, TNM staging, Treatment stratification

Radiographic Staging of Colorectal Cancer

2019 ◽  
Author(s):  
Maurits P. Engbersen ◽  
Max J. Lahaye ◽  
Regina G.H. Beets-Tan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Colorectal Cancer ◽  
Computed Tomography ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
Tumor Staging ◽  
Tnm Staging ◽  
Preoperative Imaging ◽  
Resonance Imaging ◽  
Colon And Rectal Cancer

Imaging increasingly plays an important role in selecting the most optimal treatment for patients with colon and rectal cancer. While in colon cancer, computed tomography (CT) remains the modality of choice for local and distant staging, in patients with rectal cancer magnetic resonance imaging (MRI) is the main modality and mandatory for local staging. Endoluminal rectal ultrasound (ERUS) is the preferred staging method for superficial rectal tumors. This chapter addresses the current role of various imaging modalities in colorectal tumor staging. This review contains 4 figures and 50 references. Key words: Preoperative imaging, Colorectal cancer, Magnetic resonance imaging, Diffusion weighted MRI, Computed tomography, Mesorectal fascia, TNM staging, Treatment stratification

scholarly journals Morphometric relationships between dimensions the anterior talofibular ligament and calcaneofibular ligament in routine magnetic resonance imaging

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Pawel Szaro ◽  
Khaldun Ghali Gataa ◽  
Nektarios Solidakis ◽  
Przemysław Pękala
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Negative Correlation ◽  
Biomechanical Model ◽  
Anterior Talofibular Ligament ◽  
Resonance Imaging ◽  
Calcaneofibular Ligament ◽  
Level Of Evidence ◽  
Human Foot ◽  
Routine Magnetic Resonance Imaging

Abstract Purpose This study aimed to test the hypothesis that routine MRI ankle can be used to evaluate dimensions and correlations between dimensions of single and double fascicular variants of the ATFL and the CFL. Methods We reviewed ankle MRIs for 251 patients. Differences between the length, thickness, width, and length of the bony attachments were evaluated twice. P < .05 was considered as significant. Results For the ATFL, we observed a negative correlation between thickness and width, with a positive correlation between thickness and length (p < 0.001). The average values for the ATFL were thickness, 2.2 ± 0.05 mm; length, 21.5 ± 0.5 mm; and width, 7.6 ± 0.6 mm. The average values for the CFL were thickness, 2.1 ± 0.04 mm; length, 27.5 ± 0.5 mm; and width, 5.6 ± 0.3 mm. A negative correlation was found between length and width for the CFL (p < 0.001). Conclusions Routine MRI showed that most dimensions of the ATFL and CFL correlate with each other, which should be considered when planning new reconstruction techniques and developing a virtual biomechanical model of the human foot. Level of evidence III

The performance of magnetic resonance imaging in the detection of triangular fibrocartilage complex injury: a meta-analysis

2015 ◽  
Vol 40 (5) ◽  
pp. 477-484 ◽  
Author(s):  
Z. X. Wang ◽  
S. L. Chen ◽  
Q. Q. Wang ◽  
B. Liu ◽  
J. Zhu ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Sensitivity And Specificity ◽  
Meta Analysis ◽  
Triangular Fibrocartilage Complex ◽  
Resonance Imaging ◽  
Level Of Evidence ◽  
Complex Injury ◽  
Imaging Results ◽  
Triangular Fibrocartilage

The aim of this study was to evaluate the accuracy of magnetic resonance imaging in the detection of triangular fibrocartilage complex injury through a meta-analysis. A comprehensive literature search was conducted before 1 April 2014. All studies comparing magnetic resonance imaging results with arthroscopy or open surgery findings were reviewed, and 25 studies that satisfied the eligibility criteria were included. Data were pooled to yield pooled sensitivity and specificity, which were respectively 0.83 and 0.82. In detection of central and peripheral tears, magnetic resonance imaging had respectively a pooled sensitivity of 0.90 and 0.88 and a pooled specificity of 0.97 and 0.97. Six high-quality studies using Ringler’s recommended magnetic resonance imaging parameters were selected for analysis to determine whether optimal imaging protocols yielded better results. The pooled sensitivity and specificity of these six studies were 0.92 and 0.82, respectively. The overall accuracy of magnetic resonance imaging was acceptable. For peripheral tears, the pooled data showed a relatively high accuracy. Magnetic resonance imaging with appropriate parameters are an ideal method for diagnosing different types of triangular fibrocartilage complex tears. Level of Evidence: Diagnostic Level III

Autologous Osteochondral Mosaicplasty for Centrally and Laterally Located, Advanced Capitellar Osteochondritis Dissecans in Teenage Athletes: Clinical Outcomes, Radiography, and Magnetic Resonance Imaging Findings

2018 ◽  
Vol 46 (8) ◽  
pp. 1943-1951 ◽  
Author(s):  
Tadanao Funakoshi ◽  
Daisuke Momma ◽  
Yuki Matsui ◽  
Tamotsu Kamishima ◽  
Yuichiro Matsui ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Outcomes ◽  
Osteochondritis Dissecans ◽  
Case Series ◽  
Return To Play ◽  
Joint Surface ◽  
Resonance Imaging ◽  
Level Of Evidence

Background: Autologous osteochondral mosaicplasty (ie, mosaicplasty) results in satisfactory clinical outcomes and reliable return to play for patients with large or unstable lesions due to osteochondritis dissecans (OCD) of the humeral capitellum. However, the association between the healing of the reconstructed cartilage and clinical outcomes remains unclear. Purpose: To evaluate the efficacy of mosaicplasty in teenage athletes through use of clinical scores and imaging. The secondary purpose was to compare the clinical outcomes with images of centrally and laterally located lesions. Study Design: Case series; Level of evidence, 4. Methods: This study analyzed 22 elbows (all male patients; mean age, 13.5 ± 1.2 years) with capitellar OCD managed with mosaicplasty. Patients were divided into 2 groups according to the location of the lesions: central (10 patients) and lateral (12 patients). Evaluation was performed through use of the clinical rating system of Timmerman and Andrews, plain radiographs, and magnetic resonance imaging (MRI; the cartilage repair monitoring system of Roberts). The mean follow-up period was 27.5 months (range, 24-48 months). Results: Lateral lesions were significantly larger than central lesions (147.1 ± 51.9 mm2 vs 95.5 ± 27.4 mm2, P = .01). No other significant differences were found between central and lateral lesions. Timmerman and Andrews scores for both central and lateral lesions improved significantly from 125.0 ± 30.1 points and 138.3 ± 34.5 points preoperatively to 193.5 ± 11.3 points and 186.7 ± 18.1 points, respectively, at final follow-up ( P < .0001, P < .0001). Radiography identified complete graft incorporation in all cases and the absence of severe osteoarthritic changes or displaced osteochondral fragments. In the lateral group, the radial head ratio at final follow-up (1.83 ± 0.23) was significantly larger than the preoperative findings (1.75 ± 0.14, P = .049). The quality of joint surface reconstruction was found to be acceptable for central and lateral lesions on MRI evaluation. Conclusion: Mosaicplasty resulted in satisfactory clinical outcomes and smooth cartilage surface integrity in teenage athletes with OCD on their return to competition-level sports activities irrespective of lesion location.

Clinical Application of 7T Magnetic Resonance Imaging in Patients with Focal Cortical Dysplasia IIa and Epilepsy

2020 ◽  
pp. 1-9
Author(s):  
Tinghong Liu ◽  
Huilou Liang ◽  
Jianfei Cui ◽  
Kaibao Sun ◽  
Shaohui Zhang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
White Matter ◽  
Magnetic Resonance ◽  
Focal Cortical Dysplasia ◽  
Cortical Dysplasia ◽  
Preoperative Imaging ◽  
Seizure Freedom ◽  
Resonance Imaging ◽  
3T Mri ◽  
Strength Grade

<b><i>Background:</i></b> Focal cortical dysplasia (FCD) is one of the most important pathogenic findings in patients with extratemporal lobe epilepsy. Magnetic resonance imaging (MRI)-negative is the most important negative factor to predict postoperative seizure freedom; however, FCD-I and part of FCD-IIa are MRI-negative on routine MRI. <b><i>Objectives:</i></b> To explore the diagnostic values of 7T MRI and its new scan sequences in epilepsy patients with FCD-IIa. <b><i>Methods:</i></b> To include patients with focal seizure and suspicious focal abnormal imaging on 3T MRI during preoperative evaluation and perform a 7T MRI scan with white matter-suppressed (WMS) and gray-white matter tissue border enhancement (GWBE) sequences, resective epilepsy surgery, and postoperative pathological finding of FCD-IIa. The preoperative qualitative and localization significance of 7T MRI and 3T MRI in lesions with FCD-IIa was compared, and then, the imaging characteristics of lesions with FCD-IIa on 7T MRI were analyzed. <b><i>Results:</i></b> Ten cases were enrolled in this study. Seven tesla MRI presented high spatial resolutions and a high signal-to-noise ratio. WMS and GWBE could selectively suppress the signal of special tissue and improved the possibility of FCD findings. FCD-IIa showed abnormal thickness of gray matter and a blurring border and was hypointense on 7T MRI compared with 3T MRI. Seven patients showed improvement in the qualitative diagnosis strength grade of FCD, and 6 subjects showed improvement in the localization strength grade of the lesion border after careful reading of the 7T MR images. Significant differences were found in the qualitative diagnosis of FCD (<i>p</i> &#x3c; 0.05) and localization of the lesion border (<i>p</i> &#x3c; 0.05) between the neuroimaging diagnoses based on 3T MRI and the findings based on 7T MRI. <b><i>Conclusion:</i></b> 7T MRI with WMS and GWBE sequences shows application value in the preoperative imaging diagnosis of lesions with FCD-IIa in epilepsy patients.

scholarly journals Diagnostic value of four-dimensional computed tomography and four-dimensional magnetic resonance imaging in primary hyperparathyroidism when first-line imaging was inadequate

2020 ◽  
Vol 102 (4) ◽  
pp. 294-299
Author(s):  
N Acar ◽  
M Haciyanli ◽  
M Coskun ◽  
NK Erdogan ◽  
SC Celik ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Primary Hyperparathyroidism ◽  
Dynamic Imaging ◽  
Successful Outcome ◽  
Preoperative Imaging ◽  
Resonance Imaging ◽  
First Line ◽  
Line Imaging

Introduction Accurate localisation of the abnormal hyperfunctioning gland with preoperative imaging has a critical role in parathyroid surgery to obtain a successful outcome. This study aimed to evaluate the diagnostic performance of second-line imaging and their contribution to the treatment success in primary hyperparathyroidism when the first-line methods were negative or discordant. Methods Among the patients who underwent parathyroidectomy due to primary hyperparathyroidism, 33 who underwent four-dimensional computed tomography and/or four-dimensional magnetic resonance imaging because of negative or discordant first-line imaging results were included. Persistent and recurrent cases were excluded. Results The majority of the patients were female (84.8%) and the mean age was 59.2 years. Seventeen patients had four-dimensional computed tomography and 25 had four-dimensional magnetic resonance imaging, respectively. Four-dimensional computed tomography and four-dimensional magnetic resonance imaging localised the culprit gland successfully in 52.9% and 84%, respectively. Twenty-five patients in whom single adenoma was detected underwent focused parathyroidectomy. The culprit gland was solitary in 32 cases and one patient had double adenoma. Normocalcaemia was achieved in all cases. Among the 29 patients who completed their postoperative sixth month success rate was 100%. Conclusion Four-dimensional magnetic resonance imaging had high accuracy with fast dynamic imaging in detecting parathyroid adenomas. When the first-line imaging methods were negative or inconclusive, four-dimensional magnetic resonance imaging should be considered primarily since it is cost effective in Turkey and emits no radiation.

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