Diffusion-Weighted MR Imaging of Cholesteatoma in Pediatric and Adult Patients Who Have Undergone Middle Ear Surgery

Aikele, Peter; Kittner, T.; Offergeld, Christian; Kaftan, H. Asuman; Hüttenbrink, Karl-Bernd; Laniado, Michael

doi:10.2214/ajr.181.1.1810261

Cited by 149 publications

(143 citation statements)

References 16 publications

Supporting

Mentioning

126

Contrasting

Unclassified

Order By: Relevance

“…Surgical treatment of the cholesteatoma is more functional and convenient when it is diagnosed earlier [1][2][3]. The surgery is less successful when the diagnosis is not clear and/or the size/location of the lesion is not exactly known [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The surgery is less successful when the diagnosis is not clear and/or the size/location of the lesion is not exactly known [1][2][3][4][5]. Otoscopy, oto-endoscopy and microscopy are some of the clinical procedures used for the diagnosis of cholesteatoma [1]. High-resolution computed tomography (HRCT) and diffusion-weighted imaging (DWI) are the most commonly used imaging techniques for the diagnosis of the cholesteatoma [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Detection of cholesteatoma: High-resolution DWI using RS-EPI and parallel imaging at 3 tesla

Algın

Aydın

Özmen

et al. 2017

Journal of Neuroradiology

View full text Add to dashboard Cite

a b s t r a c tThe purpose of this study is to evaluate the impact of RS-EPI-DWI in the detection of cholesteatoma and to compare with single-shot echo-planar DWI (SS-EPI-DWI). Diffusion-weighted and apparent diffusioncoefficient (ADC) images were obtained using RS-EPI and SS-EPI techniques in 30 patients. Presence of cholesteatoma (3 point scale), amount of artefacts (4 point scale), visibility (4 point scale), and ADC values of the lesions were assessed. The results of both techniques were compared with each other and gold-standard (GS) test results. Lesion visibility and presence of artefact scores of RS-EPI-DWI group were significantly different from those of the SS-EPI group. RS-EPI-DWI images had fewer artefacts and higher visibility scores. The sensitivity, specificity, negative/positive-predictive, and overall-agreement values of RS-EPI-DWI technique were 100%, 78%, 100%, 74%, and 87%; respectively. These values for SS-EPI-DWI technique were 91%, 60%, 88%, 67%, and 75%; respectively. Also, these values were higher on axial plane than coronal plane images for ADC measurements. Based on gold-standard test findings, agreement values were good ( = 0.74) for RS-EPI-DWI and moderate for SS-EP-DWI ( = 0.50) techniques (P < 0.001 for both). The RS-EPI-DWI technique allows a higher spatial-resolution and this technique is less susceptible to artefacts when compared with SS-EPI technique.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Detection of cholesteatoma: High-resolution DWI using RS-EPI and parallel imaging at 3 tesla

Algın

Aydın

Özmen

et al. 2017

Journal of Neuroradiology

View full text Add to dashboard Cite

show abstract

“…Other studies using diffusion MRI reported high specificity levels in diagnosing cholesteatomas larger than 0.5cm (Table 1) 11,12,15,16 . Vercruysse 16 reported lower sensitivity levels due to increased prevalence of residual cholesteatomas smaller than 0.5cm in size.…”

Section: Discussionmentioning

confidence: 90%

Aplicação da ressonância magnética no acompanhamento da cirurgia do colesteatoma

Toyama¹,

Leite²,

Filho³

et al. 2008

Rev. Bras. Otorrinolaringol.

View full text Add to dashboard Cite

Convent ional CT and MRI scans have low specificity when it comes to differentiating granulation tissue from relapsing cholesteatoma. Aim: this paper aims to analyze the use of DWI and delayed post-contrast T1-weighed imaging in the detection of recurring cholesteatomas. Materials and method: this is a cross-sectional prospective study that looked at 17 cholesteatoma patients postoperatively. All patients underwent diffusion magnetic resonance imaging at 1.5T, T1, T2, and delayed post-contrast T1 and images were produced from both coronal and axial planes. Two radiologists assessed the images and decided consensually that the presence of hyperintensive signal in DWI on T2, iso/ hypointensive signal on T1, and absence of contrast uptake were indicative of relapsing cholesteatoma. Surgical review findings were compared to DWI scans. Results: eleven of the twelve cases of recurring cholesteatoma presented hyperintensive signal in the DWI scans. None of the patients with granulation tissue in the surgical wound presented hyperintensive signal in the DWI scans. A patient with an abscess in the internal acoustic meatus also presented a hyperintensive signal in the DWI scans. Sensibility, specificity, positive predictive value and negative predictive value were 91.6%, 60.0%, 84.6%, and 75.0%, respectively. Conclusion: DWI combined with delayed post-contrast T1 SE sequence proved to be useful in the differential diagnosis of granulation tissue and recurring cholesteatoma.

show abstract

“…Granulation tissue, fibrous tissue, cholesterol granuloma or serous fluid has a low signal intensity on DWI (at a b-factor of 800 sec/mm 2 ). Visual comparison of DWI images obtained with a b-factor of 800 sec/ mm 2 without calculation of the apparent diffusion coefficient is sufficient for diagnostic analysis [58,59]. The reason for the high signal intensity is assumed to be a T2 shine-through effect or the restricted molecular diffusion of cholesteatoma.…”

Section: Diffusion-weighted Imaging (Epi-dwi Non-epi-dwi Resolve)mentioning

confidence: 99%

MRI Sequences in Head & Neck Radiology – State of the Art

Widmann¹,

Henninger²,

Kremser³

et al. 2017

Fortschr Röntgenstr

View full text Add to dashboard Cite

ZUSAMMENFASSUNGHintergrund Magnetic resonance imaging (MRI) ist ein essentielles bildgebendes Verfahren für die Beurteilung von Kopf-Hals Erkrankungen. Die diagnostische Aussagekraft der MRI ist jedoch stark von der entsprechenden Auswahl und Interpretation der Protokolle und Sequenzen abhängig. Das Ziel dieses Beitrags ist es, State-of-the-art-Sequenzen für die klinische Routine der Kopf-Hals-MRI zusammenzufassen und die Evidenz zu beschreiben, für welche medizinische Fragestellungen diese Sequenzen nützlich sind.Methode Literaturübersicht von State-of-the-art-Sequences in der Kopf-Hals-MRI.

show abstract

Diffusion-Weighted MR Imaging of Cholesteatoma in Pediatric and Adult Patients Who Have Undergone Middle Ear Surgery

Cited by 149 publications

References 16 publications

Detection of cholesteatoma: High-resolution DWI using RS-EPI and parallel imaging at 3 tesla

Detection of cholesteatoma: High-resolution DWI using RS-EPI and parallel imaging at 3 tesla

Aplicação da ressonância magnética no acompanhamento da cirurgia do colesteatoma

MRI Sequences in Head & Neck Radiology – State of the Art

Contact Info

Product

Resources

About