不同3T核磁共振機(jī)內(nèi)耳內(nèi)淋巴影像學(xué)測(cè)定比較研究
[Abstract]:Objective: to introduce the contrast agent meglumine gadolpate into the eustachian tube tympanum and restore magnetic resonance imaging (three dimensional fluid attenuated inversion recovery magnetic resonance imaging,3D-FLAIR MRI) technique with 3D fast fluid attenuation inversion in the inner ear. On the basis of endolymphatic imaging of normal inner ear, an objective and unified method of nuclear magnetic resonance (NMR) measurement of endolymphatic space was used to investigate whether this method could be widely used to evaluate the scientificalness of clinical controlled study. Accuracy and feasibility. Methods: 12 normal subjects were randomly divided into two groups: group A (n = 6) and group B (n = 6). 24 hours after administration, 6 patients in group A were treated with 3T magnetic resonance machine (GE, HDX, USA) in Tongren Hospital. Group B (6 cases) were examined by 3D-FLAIR MRI in 3 T magnetic resonance machine (PHILIPS, ACHIEVA, Netherlands) of Beijing Hospital. The cochlear space and total lymphoid space were measured by oblique sagittal axis of cochlea. The long vestibular axis of the vestibular vestibule was used to measure the total lymphatic space (the sum of the area of the elliptical sac and balloon) and the total lymphatic space. Pure tone audiometry and acoustic impedance test were performed 1 week and 1 month after administration. Results: (1) there were transient stinging pain in eustachian tube placement in 12 normal subjects, transient rotational vertigo in 4 normal subjects, ear distention in 12 normal subjects, hearing loss in 3 normal subjects. In 6 cases of normal subjects, fluid-like tinnitus and cough occurred in 1 case of normal subjects. The above symptoms disappeared within 5 minutes after administration. 2The inner ear 3D-FLAIR MRI, of 6 subjects in group A and 6 normal subjects in group B could show the cochlea of the inner ear, and the contrast agent gadolinium enhancement area could be widely seen in the vestibular and / or semicircular perilymphatic space, which could be distinguished from the inner ear. The boundary of the perilymphatic space and clear imaging of the endolymphes. 3 in group A, the assessment values of endolymphatic space in cochlea and vestibule of 6 normal subjects were 0.19 鹵0.04 and 0.15 鹵0.03, respectively. In group B, the assessment values of endolymphatic space in cochlea and vestibule of 6 normal subjects were 0.31 鹵0.06 and 0.32 鹵0.05, respectively. There was no significant difference in the assessment value of endolymphatic space between group A (6 normal subjects) and group B (6 normal subjects) (P0.05), but there was no significant difference between vestibule and vestibule (P0.05). 4. One month after administration, 12 normal subjects were examined in the normal range of pure tone audiometry and acoustic impedance test, and there was no significant difference between pure tone audiometry and acoustic impedance test. Conclusion: through the introduction of gadolinium into the eustachian tube tympanum, the inner ear 3D-FLAIR MRI, adopts objective and unified method of collecting and measuring endolymphatic space nuclear magnetic resonance image. The evaluated value of endolymphatic space is scientific, accurate and comparable. It is a method which can be widely used in clinical controlled study. This study laid a foundation for the objective diagnosis of endolymphatic hydronephrosis, which is the main pathological feature of endolymphatic hydrops, and provided guidance for the treatment and prognosis of endolymphatic hydronephrosis. The imaging determination of the objective assessment value of endolymphatic space in the normal inner ear provides a reference basis for the study of the correlation between the degree of endolymphatic hydrops and the severity of clinical symptoms.
【學(xué)位授予單位】:昆明醫(yī)學(xué)院
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2011
【分類號(hào)】:R764.04
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