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VENTRICLES
AND CISTERNS
Sagittal MRI
Can
you identify the ventricles and cisterns that appear in this
image? |
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LARGE SUPRA SELLAR ADENOMA WITH HYDROCEPHALY
45 year old man with history of a mass seen in the region of the sella on outside CT scan. Clinical symptoms: headache, bitemporal hemianopsia and impotence.
On MRI very large supra sellar mass with hydrocephaly in relation with blockage of 3rd ventricle. Pathology : chromophobe adenoma.
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HYDROCEPHALUS:
HORIZONTAL, CT
This is a CT of a patient with
hydrocephalus similar to that observed in the gross coronal
section above. Notice the greatly enlarged lateral ventricles.
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LEFT
VENTRICLE HYDROCEPHALUS: HORIZONTAL MRI
Section through the forebrain from a frozen specimen.
The section is take at the level where connections can be
seen between the head of the caudate and the putamen.
(from the Laboratory of Neuro
Imaging) |
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HYDROCEPHALUS
Patient presenting a large astrocytoma of the cerebellum (A). There is a huge tonsillar herniation (B) in relation with the presence of this large tumor.There is also an important hydrocephalus (C). |
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UNCAL
HERNIATION IN CASE OF MALIGNANT TEMPORAL TUMOR
Pathology of an uncal herniation: in this pathologic specimen there is a contro lateral compression of the brain stem.
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MRI
AND MR ANGIOGRAPHY
This image contains an MR angiogram, which uses a pulse
sequence to enhance blood flowing through vessels, and the
corresponding T1 MRI.
Can you identify the vessels and corresponding neuroanatomy?
Labels are available. Figure legend available.
(Image from the Digital Anatomist site [J.S. Tsuruda] )
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ANGIOGRAM
This is a movie of an angiogram, lateral view through the
cranium. A radio-opaque dye is injected into a cerebral vessel
(in this case the left corotid) in order to visualize flow
(and look for pathology).
View
Movie >
Given
that this is a lateral view, what vessel is this? |
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OPTICAL
IMAGING
This is a movie of an optical intrinsic signal produced
by a sustained stimulation in rodent cortex. Large branches
seen are from the rodent middle cerebral artery. Note that
blood delivery to cortex is not static, rather it is dynamic,
increasing in response to cortical stimulation.
View
Movie>
View
OIS sequences (MPEG) > |
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SUPPLEMENT
Woods et al Woods, R.P., Iacoboni, M., Mazziota, J.C. (1994)
"Bilateral spreading cerebral hypoperfusion during spontaneous
migraine headache" NEJM 331:1689-1692.
This PET imaging study of a migraine headache in progress
indicates the pattern and alteration of cerebral blood flow
caused by the migraine. Notice that the spreading hypoperfusion
is not restricted to a single cerebral vascular zone, suggesting
a primiary cortical process.
Figure legend available > |
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