scholarly journals Evaluation of calcaneal enthesophytes in insertional Achilles tendinopathy by radiography and magnetic resonance imaging: intra- and inter-observer reliability

2020 ◽  
Vol 14 (1) ◽  
pp. 46-51
Author(s):  
Dario Maciel Silveira Junior ◽  
Tiago Soares Baumfeld ◽  
Daniel Soares Baumfeld ◽  
Wilel Almeida Benevides ◽  
Thiago Alexandre Alves Silva
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Achilles Tendinopathy ◽  
Observer Agreement ◽  
Diagnostic Study ◽  
Resonance Imaging ◽  
K Value ◽  
X Ray ◽  
Diagnosis Accuracy ◽  
Insertional Achilles Tendinopathy

Objective: Evaluate intra- and inter-observer variation in the presence of enthesophytes in patients with insertional Achilles tendinopathy on radiographic (X-ray) and magnetic resonance imaging (MRI) images. Methods: We selected X-ray and MRI images of 20 patients diagnosed with an injury. We sent a questionnaire to five foot and ankle surgeons and five radiologists. We obtained answers about diagnosis accuracy and the presence of insertional enthesophytes (bone spurs). Results: Intra-observer agreement with regards to diagnosis accuracy in the MRI analysis was a K of 0.77 (0.62 to 1.00), while in the X-ray analysis, the K was 0.95 (0.77 to 1.00). Intra-observer agreement on the presence of enthesophytes in the MRI analysis had a K coefficient of 0.90 (0.68 to 1.00) and intra-observer agreement in the X-ray of 0.93 (0.86 to 1.00). The evaluation of inter-observer agreement on the diagnosis accuracy had a K coefficient between 0.09 and 0.20. Inter-observer agreement regarding the presence of enthesophytes was a K value between 0.59 and 0.63 for the MRI and a K between 0.81 and 0.82 for the X-ray results. Conclusion: Intra-observer values for diagnosis accuracy of the MRI and X-ray tests indicated strong to almost perfect agreement, similar to the intra-observer values for evaluation of the presence of enthesophytes, but the X-ray had better agreement. In both tests, intra-observer agreement on the presence of osteophytes was weak in comparison to inter-observer agreement, yet in the inter observer evaluation of the presence of enthesophytes, the X-ray agreement was greater than the MRI values. Level of Evidence III; Diagnostic Study.

scholarly journals Imaging and classification of osteochondritis dissecans of the capitellum: X-ray, magnetic resonance imaging or computed tomography?

2018 ◽  
Vol 11 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Kimberly I. M. van den Ende ◽  
Renée Keijsers ◽  
Michel P. J. van den Bekerom ◽  
Denise Eygendaal
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Osteochondritis Dissecans ◽  
Ct Scans ◽  
Diagnostic Study ◽  
X Rays ◽  
Resonance Imaging ◽  
Loose Bodies ◽  
X Ray

Background Diagnosing capitellar osteochondritis dissecans (OCD) can be difficult, causing delay in treating young athletes. The main aim of this retrospective diagnostic study was to determine which radiological technique is preferred to identify and classify elbow OCD. Methods We identified young patients who underwent elbow arthroscopy because of symptomatic OCD. We included all patients who had pre-operative radiographs, a computed tomography (CT) scan and magnetic resonance imaging (MRI) available. We assessed whether the osteochondral lesion could be identified using the various imaging modalities. All lesions were classified according to previous classifications for X-ray, CT and MRI, respectively. These results were compared with findings at arthroscopy. Results Twenty-five patients had pre-operative radiographs as well as CT scans and MRI. In six patients, the lesion was not visible on standard X-ray. In 20 patients, one or two loose bodies were found during surgery, consistent with an unstable lesion. Pre-operatively, this was seen on 11 X-rays, 13 MRIs and 18 CT scans. Conclusions Capitellar OCD lesions are not always visible on standard X-rays. A CT appears to be the preferred imaging technique to confirm diagnosis of OCD. Loose bodies are often missed, especially on standard X-rays and MRIs.

COMBINED X-RAY AND MAGNETIC RESONANCE IMAGING FACILITY

2007 ◽  
Vol 60 ◽  
pp. 352-361 ◽  
Author(s):  
Stefan Hunsche ◽  
Dieter Sauner ◽  
Mohammad Maarouf ◽  
Klaus Lackner ◽  
Volker Sturm ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
X Ray

X-ray CT and Magnetic Resonance Imaging to Study the Development of Core Breakdown in 'Conference' Pears

2001 ◽  
Author(s):  
J. Lammertyn ◽  
P. Jancsok ◽  
T. Dresselaers ◽  
P. Van Hecke ◽  
M. Wevers ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
X Ray

Is multidetector computed tomography comparable to magnetic resonance imaging for assessment of lumbar foraminal stenosis?

2016 ◽  
Vol 58 (2) ◽  
pp. 197-203
Author(s):  
Woo Young Kang ◽  
Joong Mo Ahn ◽  
Joon Woo Lee ◽  
Eugene Lee ◽  
Yun Jung Bae ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Multidetector Computed Tomography ◽  
Excellent Agreement ◽  
Observer Agreement ◽  
Kappa Statistics ◽  
Foraminal Stenosis ◽  
Resonance Imaging ◽  
Lumbar Foraminal Stenosis

Background Both multidetector computed tomography (MDCT) and magnetic resonance imaging (MRI) are used for assessment of lumbar foraminal stenosis (LFS). Therefore, it is relevant to assess agreement between these imaging modalities. Purpose To determine intermodality, inter-, and intra-observer agreement for assessment of LFS on MDCT and MRI. Material and Methods A total of 120 foramina in 20 patients who visited our institution in January and February 2014 were evaluated by six radiologists with different levels of experience. Radiologists evaluated presence and severity of LFS on sagittal CT and MR images according to a previously published LFS grading system. Intermodality agreement was analyzed by using weighted kappa statistics, while inter- and intra-observer agreement were analyzed by using intraclass correlation coefficients (ICCs) and kappa statistics. Results Overall intermodality agreement was moderate to good (kappa, 0.478–0.765). In particular, two professors and one fellow tended to overestimate the degree of LFS on CT compared with MRI. For inter-observer agreement of all six observers, ICCs indicated excellent agreement for both CT (0.774) and MRI (0.771), while Fleiss’ kappa values showed moderate agreement for CT (0.482) and MRI (0.575). There was better agreement between professors and fellows compared with residents. For intra-observer agreement, ICCs indicated excellent agreement, while kappa values showed good to excellent agreement for both CT and MRI. Conclusion MDCT was comparable to MRI for diagnosis and assessment of LFS, especially for experienced observers. However, there was a tendency to overestimate the degree of LFS on MDCT compared with MRI.

scholarly journals Comparison of Cervical Sagittal Parameters Between Radiographs and Magnetic Resonance Images in Patients With Cervical Spondylotic Myelopathy

2021 ◽  
pp. 219256822110624
Author(s):  
Chongqing Xu ◽  
Qixing Shen ◽  
Jinhai Xu ◽  
Junming Ma ◽  
Jie Ye ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cobb Angle ◽  
Cervical Spondylotic Myelopathy ◽  
Magnetic Resonance Images ◽  
Observer Agreement ◽  
Resonance Imaging ◽  
Thoracic Inlet ◽  
Sagittal Parameters ◽  
Inlet Angle

Study Design Observational study Objective As an important consideration of surgery, cervical sagittal balance is believed to be better assessed using standing radiograph than supine magnetic resonance imaging (MRI). However, few studies have researched this. Our study aimed to observe the correlations and differences in cervical sagittal parameters between radiograph and MRI in patients with cervical spondylotic myelopathy (CSM), and evaluate whether the change of position affects them. Methods We analyzed 84 patients, measuring Cobb angle (CA), T1 slope (T1S), neck tilt (NT), and thoracic inlet angle (TIA). Inter- and intra-parameter analyses were performed to identify any difference between standing radiograph and supine MRI. Statistical correlations and differences between the parameters were compared. Results There were excellent inter-observer agreement for each parameter (interclass correlation coefficient >.75), and significant differences were observed in each parameter between radiograph and magnetic resonance imaging ( P < .05). Strong correlations were noted between the same parameters in radiograph and MRI. Cobb angle, T1S, and neck tilt were significantly correlated with thoracic inlet angle on both radiograph and MRI, and CA was significantly correlated with T1S on both radiograph and MRI ( r: −1.0 to −.5 or .5 to 1.0). Conclusion Supine MRI obviously underestimated the value of CA, T1S, and TIA. Therefore, standing cervical radiographs should be obtained in CSM patients to assess and determine surgical strategy, not only supine MRI. Moreover, we observed that NT and TIA were not constant morphological parameters.

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