Title
MRI of the Internal Auditory Canals Without and With Intravenous Contrast
Clinical History
Patient-specific — populated from user input at report time. Shows "None" if not provided.
Comparison
No prior studies available for comparison.
Technique
Multiplanar MRI of the internal auditory canals was performed. Precontrast sequences included high-resolution axial and coronal T1-weighted images and axial and coronal 3-D Drive T2-weighted images. Following intravenous gadolinium administration, matching high-resolution axial and coronal T1-weighted images were obtained. Additional sequences included whole brain axial T2-weighted, sagittal T1-weighted, diffusion-weighted imaging, and postcontrast axial T1-weighted sequences.
Findings
Overview of findings will be detailed in the anatomical sections below.
Cerebellopontine Angle Cisterns:
No evidence of mass or abnormal enhancement within the cerebellopontine angle cisterns bilaterally.
Internal Auditory Canals:
No evidence of mass or abnormal enhancement within the internal auditory canals bilaterally.
Middle Ear Structures:
No abnormal enhancement of the middle ear structures bilaterally. The middle ear cavities appear unopacified.
Inner Ear Structures:
No abnormal enhancement of the inner ear structures bilaterally.
Mastoid Air Cells:
The mastoid air cells appear clear bilaterally.
Brain Parenchyma:
There are no abnormal areas of enhancement throughout the brain. No restricted diffusion to suggest acute ischemia. No abnormal areas of susceptibility effect. No intracranial hemorrhage identified.
Ventricles and Sulci:
The ventricles and sulci are age-appropriate. No hydrocephalus, midline shift, or herniation pattern identified.
Brainstem and Posterior Fossa:
The brainstem, posterior fossa, and cervicomedullary junction are normal.
Sellar Region:
The sella turcica and pituitary gland are unremarkable.
Pineal Region:
The pineal recess region is unremarkable.
Cerebral Vasculature:
The vascular flow voids at the base of the brain are maintained.
Calvarium and Skull Base:
No suspicious expansile or destructive calvarial lesions identified.
Paranasal Sinuses:
The visualized paranasal sinuses are clear.
Impression
No evidence of mass or abnormal enhancement within the cerebellopontine angles or internal auditory canals bilaterally.