Brain lesions revealed by internal auditory canal MRI in pediatric cochlear implant candidatesKim, J HMoon, J WJeon, T YYoo, S YEo, HLee, J H
On CT, they are hypodense to isodense, may calcify, and may enlarge the bony internal auditory canal. 在CT上表现为低或等密度,可见钙化,可见骨性内听道扩大。 On MRI, they are hypointense on T1, hyperintense on T2, and display avid contrast enhancement. 在MRI上表现为T1低信号,T2高信号,增强...
We retrospectively studied six patients with cerebellopontine angle (CPA) meningiomas who showed enhancement within the internal auditory canal (IAC) on gadolinium-DTPA-enhanced MRI at 1.5T. In three patients, intracanalicular enhancement took the form of fine linear enhancement, along the walls, wh...
extremely short repetition time (TR) between RF pulses such that high-resolution 3D volume images can be acquired rapidly. The 3D FIESTA technique is especially useful for the rapid acquisition of high spatial-resolution images of static structures such as cochlea, internal auditory canal, or ...
Results In 23 patients with acoustic neurinomas, 16 cases presented thickened acoustic nerve, extending toward internal auditory canal, which was characteristic for this tumor. Trigeminal neurinomas in 4 patients strode over middle and posterior brain fossa mimicking dumbbell. In 3 patients with ...
The arteries of encephalic destination emerging from the internal carotid arteries and vertebral arteries and forming the circle of Willis (arterial circle of the brain). It should be noted that this MRI is without gadolinium injection; the large arteries are visible by hyperintense flow phenomenon ...
Mondini malformation with lack of interscalar septum, short and wide internal auditory canal and enlarged vestibular aqueduct are particularly common CT features of CMV survivors with hearing loss7, 35, 50, 77. A small per cent of infants who have been infected in utero will be symptomatic with...
CtandMRidagnossofcongen als enossof hen ernalaud orycanalWANGLin-sheng , ZHANGLi-hong,LIxiao-yu,CHENYue-in,LIxian,SUNZhan-guo,WANG ie-huan,ZHANGGu-ing, LIUping. De artmentofCT,AffiliatedHos italof iningMedicalCollege, ining272029,China ...
Vestibular schwannomas (CN VIII) usually occur in the internal auditory canal or porus acusticus, and 90% of patients develop bilateral vestibular schwannomas. 听神经鞘瘤(VIII脑神经)通常发生于内听道或者耳孔,90%表现为双侧听神经鞘瘤。 On CT, they are hypodense to isodense, may calcify, and ...
The artifacts vary in size and shape depending on magnetic field strength, cMRI sequence, and position of the internal CI magnet16,17,18. At 3 T, artifacts caused by the CI have been shown to affect image quality of the nearby brain regions depending on the chosen sequence. Majdani et ...