Title
MRI of the Brain and 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
Two separate MRI examinations were obtained with combined reporting. Brain MRI included multiplanar imaging with axial T1, T2, FLAIR, DWI, and ADC maps without contrast, followed by axial T1-weighted images after gadolinium administration. IAC MRI included high-resolution precontrast axial and coronal T1-weighted images and coronal 3D Drive T2-weighted images, followed by matching high-resolution postcontrast axial and coronal T1-weighted images.
Findings
Detailed findings organized by anatomical region and imaging component.
Ventricles and Sulci:
The ventricles and sulci are normal for the patient's stated age.
Diffusion-Weighted Imaging and ADC Maps:
The diffusion-weighted images and ADC maps show no evidence of acute infarction or restricted diffusion.
Gradient Recall Echo/T2* Sequences:
The GRE/T2* images show no evidence of parenchymal hemorrhage.
Extra-axial Spaces and Mass Effect:
There is no evidence of extra-axial collections, space-occupying mass lesion, mass effect, or midline shift.
Corpus Callosum:
The sagittal images demonstrate a well-formed intact corpus callosum.
Cerebellar Tonsils:
The cerebellar tonsils appear to terminate above the level of the foramen magnum.
Sellar and Suprasellar Region:
The sella turcica, pituitary gland, optic chiasm, and suprasellar region appear within normal limits.
Brainstem and Posterior Fossa:
The brainstem, posterior fossa, and cervicomedullary junction appear preserved.
Orbital Soft Tissues:
The orbital soft tissues appear normal.
Nasopharynx:
The visualized nasopharynx appears normal.
Paranasal Sinuses and Mastoid Air Cells:
There are no fluid levels seen within the paranasal sinuses and mastoid air cells.
Skull Base, Calvarium, and Upper Cervical Spine Bone Marrow:
There is no abnormal bone marrow signal within the skull base, calvarium, and visualized upper cervical spine.
Intracranial Vessels and Dural Venous Sinuses:
Expected flow-voids are present within the visualized intracranial vessels at the skull base level and dural venous sinuses.
Cerebellopontine Angle:
There is no evidence of mass lesion or abnormal enhancement within the cerebellopontine angle bilaterally.
Internal Auditory Canals:
There is no evidence of mass lesion or abnormal enhancement within the internal auditory canals bilaterally.
Middle and Inner Ear Structures:
There is no abnormal enhancement of the middle or inner ear structures bilaterally.
Mastoid Air Cells and Middle Ear Cavities:
The mastoid air cells and middle ear cavities appear unopacified bilaterally.
Impression
1. No evidence of mass lesion or abnormal enhancement within the cerebellopontine angle or internal auditory canals bilaterally.
2. No acute intracranial abnormality identified on brain MRI.