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MRI brain plain. Arrows show hemiatrophy and reduction in the volume of brain parenchyma and thinning of grey matter
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Brain magnetic resonance imaging of the patient showing thinning of the superior cerebellar peduncle (arrow) bilaterally
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MRI brain showing hypoplastic pituitary with visible stalk and absent splenium of corpus callosum
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The scan was performed 7 months following ventriculoperitoneal shunting. Marked supratentorial hydrocephaly regression. Mildly distended occipital and temporal horns of the left lateral ventricle. Nonenhanced CT scan
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Normal cranial nerve IV. Axial magnetic resonance image at the level of the inferior colliculus shows the cisternal segments of cranial nerve IV (thin arrows) exiting from the posterior aspect of the brainstem and coursing in the anterolateral direction toward the tentorium (thick arrows).
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Brain MRI FLAIR Bilateral parieto-occipital hyperintese lesions.
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T1 W MRI of brain, axial images showing solid cystic lesion, solid component being iso to hyper intense
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Relationship between BDNF levels and brain macro- and microstructural indices. Scatterplots show the association between BDNF levels and the left amygdala normalized volume (NV) (green) and left hippocampus mean diffusivity (MD, red). Linear fit (dotted lines) is reported.
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Axial MRI of the brain showing diffuse lesions mimicking secondary tumours.
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MRI brain showing increased T2 FLAIR signal in brainstem.
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MRI brain FLAIR image axial view showing round shaped mass in the third ventricle, with enlarged both lateral ventricles shown by white arrows.
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TCS image (zoom) of butterfly shaped mesencephalic brainstem of healthy individual, left SN (arrow) with an area of 0.10 cm2.
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Noncontrast enhanced CT of brain at supraclinoid level shows left proptosis and periorbital edema. A posteriorly displaced bone fragment is just lateral to left supraclinoid internal carotid artery (arrow).
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CT scan of brain showing no abnormal calcification
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MRI of the brain with region of restricted diffusion consistent with infarct in the territory of the left middle cerebral artery.
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Axial plain T1-weighted image of the brain at the level of pons shows a well-defined extraaxial homogenous hyperintense lesion measuring 4.2 by 2.7 centimeters anterior to brain stem and involving bilateral cerebellopontine angle cisterns.
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Midsagittal vermis relative diameter (MVRD). Legend: Midsagittal vermis relative diameter (MVRD) was calculated using a midsagittal section and measuring total posterior cranial fossa diameter (a linear segment from the posterior commissura to the occipital bone at the foramen magnum) and the largest axial diameter of... | |
Flair axial image reveals large hyperintensity in genu and posterior limb of internal capsule, ventral thalamus and part of lentiform nucules
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T1-weighted MR images with gadolinium. Nonhomogeneously enhancing right parietal tumor
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Contrast-enhanced computed tomographic scan of the brain shows multiple ring enhancing lesions in the bilateral hemispheres, with the ventricular end of the shunt-catheter in situ
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Clinical illustration of an arterial air embolism in a patient with patent foramen ovale (PFO) can be seen in the following example in which a 57-year-old female underwent liver resection. At the end of the case, the patient became profoundly hypotensive, and an air embolism was suspected. Approximately 20 cc of air w... | |
Selective right external carotid artery angiogram (lateral projection) shows a dural arteriovenous (arrow) fistula fed by the branches of the occipital artery, and draining into the perimedullary veins (arrowheads) around the brainstem and cervical spinal cord.
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MRI brain, day 5 in ICU
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MR T2 sagittal image showing multiple cortico-subcortical frontal hemorrhagic contusions (arrow 1); a hemorrhagic contusion in the posterior part of the corpus callosum (arrow 2); and edema of the splenium and contusion of the dorsolateral part of the brainstem (arrow 3)
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CT scan of case 4 showing left temporoparietal infarct
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MR angiography of the brain (MRA): virgate imaging petrous segment and the proximal portion of the left internal carotid artery and occlusion of the distal vessel.
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Brain MRI of patient 2. FLAIR images of the brain of patient 2 showing multiple periventricular cystic lesions in addition to attenuated signal in the subcortical white matter
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MRI T2 flair image demonstrating findings of posterior reversible encephalopathy syndrome involving bilateral parietal-occipital lobes, left greater than right (arrows).
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The ROIs selection according FA map. (1-2) the knee and splenial of callosum; (3–6) the crossing fibers; (7-8) the thalamus; (9–12) the cerebral cortexes; 13 is CSF.
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The MRI of the brain showing a cortical-based mass lesion at the medial aspect of the right temporal lobe, involving the Amygdala and part of the head of the hippocampus
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Axial view, CT of the head, soft tissue window reveals compression of the frontal lobe by the meningioma.
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Postoperative X-ray demonstrating occipital-cervical fixation from occiput to C1
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Emergent head CT demonstrating the larger of two frontoparietal hemorrhages.
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T2 weighted image showing thalamus (ROI 1& 2) and dorsolateral frontal cortex (ROI 3 & 4)
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Coronal FLAIR image demonstrating hyperintensity in the posterior occipital white matter extending up to the vertex with mild local sulcal effacement consistent with posterior reversible encephalopathy syndrome (PRES).
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Enhanced magnetic resonance image (MRI) of the sagittal section of patient 1 showing the narrowing of the nodular lesions below the hypothalamus region following treatment.
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MRI of the cranium revealed infarct areas of posterior limb of capsula interna, right globus pallidus, left occipital lobe and bilateral thalamus.
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Real clinical brain projections with 128 bins and 128 angles that are acquired from a mPower scanner.
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Brain magnetic resonance imaging showing severe brain swelling with tonsillar and uncal herniation (asterisk).
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Ground-glass appearance.Coronal CT image demonstrates ground-glass appearance in right temporal bone (arrow). Patient had diagnosis of fibrous dysplasia.
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Computed tomography of the brain conducted at 5 weeks of age showing an intra cerebral hemorrhage.
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Left hemispheric malignant middle cerebral artery infarction after hemicraniectomy (magnetic resonance imaging). The swollen brain is allowed to expand outside.
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Axial CT section showing the involvement of the maxillary sinus of right side. Further the zygomatic arch, zygoma, base of the cranium, mastoid process, pterygoid plates and sphenoid of right side were also involved. There was evidence of involvement of occipital condyles of both the sides and clivus.
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Lateral plain radiograph of the skull shows subdural Intracranial pressure monitoring sensor (arrow), placed at the posterior temporal bone margin, after the initial decompressive craniectomy.
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Brain magnetic resonance images of fluid attenuation recovery in a 25-year-old female with eclampsia demonstrates moderate bilateral and symmetrical vasogenic edema in the subcortical white matter maintaining a predominant posterior pattern
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CT of head showing atrophy of brain and calcification of left parietal region.
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Image showing T2 relaxometry map with manually marked region of interest (ROI) in the hippocampus.
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Magnetic resonance imaging of the brain: Sagittal T2-weighted images of the patient demonstrating, thinning of the corpus callosum, and dilated perivascular spaces within the body of the corpus callosum (arrows), J-shaped sella turcica (arrows), and enlarged subarachnoid area
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Axial fluid attenuated inversion recovery weighted image of the magnetic resonance imaging brain showing the presence of the hyperintense lesions in the medial temporal lobes (white arrows)
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The definition of Regions of Inerest (ROIs).The brain is segmented into six lobes according to anatomy, including left frontal lobe, right frontal lobe, left temporal lobe, right temporal lobe, left occipital lobe and right occipital lobe. The six lobes are then classified into normal lobes and lesion lobe according t... | |
Sagittal T1-weighted magnetic resonance image shows hypoplastic brainstem (white arrow) with empty posterior fossa (black arrow)
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Contrast enhancing infarction in occipital lobe (arrow)
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Brain computed tomography shows high attenuated lesion (black arrow) in the left temporal lobe.
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CT Brain showing meningioma
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T1-weighted parasagittal magnetic resonance image demonstrating a hypointense lesion in the left temporal lobe (open arrowhead)
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MRI of the brain showing multiple lesions consistent with fat embolism.
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CT head with and without contrast showing an ill-defined hypodensity at the right medial temporal lobe causing mass effect and uncal herniation with surrounding vasogenic edema. Abbreviation: CT, computerized tomography.
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Brain MRI, Axial View with Contrast Enhancement
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Magnetic resonance imaging of the brain shows partial reduction of a metastatic mass in the bilateral internal auditory canals (arrows).
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CT brain (Bone window, coronal cut) showing lytic lesion and soft tissue swelling
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Magnetic resonance imaging of the brain showing acute ischemic infarcts in left cerebellar hemisphere, bilateral occipital lobe and left thalamus
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Computed tomography scan showing cerebrospinal fluid filled sac herniating through the calvarial defect along with part of cerebellum sac
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Preoperative Brain MRI contrast-enhanced T1-weighted image showing huge hemorrhagic tumor in left posterior fossa extending to the left upper neck though jugular foramen.
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Axial images of the right temporal bone show soft tissue mass lesion in the jugular fossa with irregular destruction of the jugular fossa (white arrow), jugular spine, adjacent bone, and extension of the mass into the middle ear cavity (black arrow) – glomus jugulotympanicum
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Magnetic resonance imaging (MRI) showing solitary metastasis in the left frontal lobe
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Bilateral cerebellar hemishpheric and brainstem infarction
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Magnetic resonance imaging post-gadolinium showing an extra-axial heterogenous mass compressing on the right temporal lobe.
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Pre-operative magnetic resonance imaging (MRI). MRI of brain showed heterogeneously hypo on T1-weighted and hyper on T2-weighted sequences and a lesion measuring 4×3.5×3.5 cm with solid cystic contents occupying the right cerebellopontine angle, compressing and distorting the brainstem, and extending superiorly upto t... | |
A 19-year-old male, following a high energy motor vehicle accident with hemorrhagic contusions in the temporal lobes bilaterally. Note pneumocephalus anterior to the right temporal lobe, small amount of subarachnoid blood along the right tentorial leaf and subarachnoid blood along the left temporal lobe. Additionally,... | |
T2W axial image of brain showing demyelination of pons and predominantly medial temporal lobe
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Contrast enhanced magnetic resonance images taken 2 weeks after the first surgery shows remnant mass lesion in the parietal region.
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Diffusion-weighted magnetic resonance imaging demonstrating an acute ischemic infarct within the mid left temporal lobe.
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Bone window of the scan showing a lytic lesion of right parietal bone of skull
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Follow up magnetic resonance imaging brain study after 3 months. Axial T2 weighted image showing reduced size (atrophy) of basal ganglia and progressive bilateral fronto-temporal atrophy.
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Classical asymmetrical temporal lobe T2 hyperintensity in a patient with Herpes Simplex Virus type-1 encephalitis.
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Coronal MR imaging showing diffuse dural enhancement and thickening, along with left parieto occipital edema
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Computed tomography image of the head; the axial section of the brain is shown. The image shows linear hyperdense areas in the ambient and suprasellar cisterns suggestive of subarachnoid bleeding
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Magnetic resonance image showing a mass in right external auditory canal and middle ear cavity involving high infratemporal fossa
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Fetal ultrasound image (sagittal view) at 11 + 4 weeks of gestation, showing an enlarged intracranial translucency (IT) in the posterior fossa, the brain stem (BS), and the cisterna magna (CM).
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Boundaries of thalamus used for volumetric estimation on coronal plane.
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MRI scan of the head show a large temporal mass secondary to the glioblastoma at the site of the previous intracerebral hematoma.
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TMS of brain cortex around a glioma of the primary motor cortex.
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Brain magnetic resonance image (MRI) showing the decrease in size of the left hippocampus with loss of gray-white differentiation. This observation is consistent with mesial temporal sclerosis.
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Cranial magnetic resonance image (axial T2) showing bilateral asymmetric temporal atrophy (greater to the left) also involving the hippocampus.
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Brain CT without contrast: left occipital cortico-subcortical hypodense area.
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Computed tomography of the head revealing a hyperdense focus measuring up to 6.5 mm in the right temporal lobe
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Mid-sagittal T2w image of the rabbit brain: the midline area of the caudal cranial fossa was defined as the area limited caudally by the foramen magnum and cranially by the rostral contour of the cerebellum and the dorsum sella turcica. The midline area of the cranial cranial fossa included the olfactory bulb, followi... | |
Six-millimeter maximum intensity projection in sagital plane of CTA images obtained 60 sec after contrast material injection. No enhancement of intracranial arteries is visible. Enhancement of a side branch of the external carotid artery (arrow) proves the correct injection and arrival of contrast material in the larg... | |
T1 MRI imaging showing clival lesion, osseous destruction and brain stem displacement
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Axial T2-WI MRI scan demonstrating congenital vascular malformation in the left temporal lobe.
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Preoperative axial computed tomographic image exhibiting characteristic ground-glass opacification of fibrous dysplasia involving the left frontal, temporal, and sphenoid bones.
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Axial fluid attenuation inversion recovery (FLAIR) MRI of the brain showing a bright signal from the medial temporal lobe on the left side (arrow) consistent with limbic encephalitis.
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Brain abscess due to Actinomyces meyeri in patient 28. Brain MRI T1 sequence showing a 3 cm tumefaction in the right posterior temporal region, with annular homogeneous contrast enhancement and peripheral edema. MRI = magnetic resonance imaging.
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Transverse postcontrast CT image of the brain of a 14-year-old male European shorthair cat with acromegaly, showing an enlarged pituitary gland (arrow)
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Computed tomography (CT) brain shows large hypodense area (arrow) at the left cerebellum representing infarction
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(patient 2) Sagittal reformatted multiplanar computed tomography of the craniocervical junction showed a hyperplastic odontoid process. The tip of the dens projected 4.8 mm above a line joining the back of the hard palate to the lowest point of the occipital squama (McGregor line). A mild basilar invagination was ther... | |
Axial T2-weighted brain MRI shows a large left-sided hyperintense occipital lesion.
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Axial MR image (fluid attenuated inversion recovery) showing confluent edema in subcortical and deep white matter (Grade 4) seen as hyperintensities in bilateral parieto-occipital lobes (patient 6)
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Contrast-enhanced head CT revealed a low-density lesion of the parietal lobe; a high-density area can be seen at the right cortical veins.
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Brain computerized tomography at 2 months showing bilateral thickening of the medial rectus muscles, associated with increased spontaneous density.
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