Middle ear cholesteatoma: Compared diagnostic performances of two incremental MRI protocols including non-echo planar diffusion-weighted imaging acquired on 3T and 1.5T scanners
| Autor: | F. Veillon, N. Meyer, B. Dallaudière, J. Lincot, J.-F. Matern, N. Babay, B. Rock, Sophie Riehm |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent medicine.medical_treatment Contrast Media Gadolinium Multimodal Imaging Sensitivity and Specificity Pattern Recognition Automated Young Adult Temporal bone medicine Humans Middle Ear Cholesteatoma Radiology Nuclear Medicine and imaging Aged Aged 80 and over Cholesteatoma Middle Ear Radiological and Ultrasound Technology Echo-Planar Imaging business.industry Reproducibility of Results Cholesteatoma Middle Aged Tympanoplasty Image Enhancement medicine.disease Predictive value Diffusion Magnetic Resonance Imaging medicine.anatomical_structure Middle ear Female Neurology (clinical) Radiology business Nuclear medicine Echo planar Diffusion MRI |
| Zdroj: | Journal of Neuroradiology. 42:193-201 |
| ISSN: | 0150-9861 |
| Popis: | Summary Background and purpose To compare diagnostic performances for cholesteatoma diagnosis of incremental MRI protocols including non-echo planar diffusion-weighted imaging (DWI) performed on 3T and 1.5T scanners. Materials and methods Thirty-nine patients with suspected cholesteatoma underwent 3T and 1.5T non-echo planar DWI and additional unenhanced T1-, delayed gadolinium-enhanced T1- and high-resolution T2-weighted standard acquisitions. Patients either underwent surgical tympanoplasty (n = 21) or close clinicoradiological follow-up (n = 18). Four radiologists independently and prospectively interpreted two incremental MRI protocols, differing in the magnetic field strength of the diffusion-weighted acquisition and comprising the three standard sequences. At each step, diagnostic performances were expressed as sensitivity, specificity, positive predictive value, negative predictive value and accuracy. Results Forty middle ear lesions including 21 cholesteatomas were identified. Univariate and multivariate analysis did not demonstrate significant reader, sequence addition or DWI magnetic field effect on diagnostic performances. Concerning non-echo planar DWI alone, sensitivity, specificity, positive predictive value, negative predictive value and accuracy ranged between 90.5–100%, 68.4–100%, 76.9–100%, 90.0–100% and 82.5–95.0, respectively. Conclusion Non-echo planar DWI for cholesteatoma diagnosis can be performed on 1.5T or 3T scanners indifferently. High sensitivity and negative predictive value and relatively lower specificity and positive predictive value are achieved by a single non-echo planar DWI protocol. |
| Databáze: | OpenAIRE |
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