2nd posting- MRI/MRS question

[Guest guest]

Does anyone know what this means and is the mito doing this?

" Slight prominence of the perivascular spaces around the anterior

commissure "

Thanks for any help.

Geri-Anne and Wyatt, complex I

[Guest guest]

Geri-Anne,

My son also has dilated Virchow-Robin spaces (which is another name

for the perivascular space). Dilated Virchow-Robin spaces are

associated with developmental delay, headache, and neuropsychiatric

disorders in children.

Small perivascular spaces (less than 2 mm) are found in all age groups

and represent a normal finding. With advancing age they are found with

increasing frequency and size. On MRI it may be difficult to

distinguish a lacunar infarct from a prominent perivascular space. It

can be useful to remember that lacunar infarcts occur in the upper two

thirds of the putamina, are not isointense to CSF on all pulse

sequences unless they have undergone cystic changes and are usually

larger (5mm or more). Perivascular spaces are typically smaller,

bilateral and often symmetrical, and are in the inferior one third of

the putamen.

The article below states that on MRI dilated Virchow-Robin spaces can

look like lacunar infarcts (Lacunar infarction is a unique stroke type

which are often silent clinically.)

Virchow-Robin spaces

S. Babu, N.

Dept of Radiology, Alder Hey Childrens Hospital, Eton Road, L12 2AP

Liverpool

UNITED KINGDOM

Sureshb@...

Patient

Age: 13 year(s)

Sex: F

Clinical History and Imaging

The patient had a history of complex partial seizures was referred for

MR imaging of brain. The study was normal. But the study showed

Virchow-Robin spaces around centrum semiovale which are dilated

perivascular extensions of the subarachnoid space. These should not be

considered pathological. Virchow-Robin spaces may be seen normally in

MR of brain in patients less than 40 years of age. They are normally

seen in patients with advancing age and hypertension. Here we

illustrate a paediatric age group patient with dilated Virchow-Robin

spaces. Their morphology and signal characteristics on magnetic

resonance imaging parallel the features of lacunar infarcts. Magnetic

Resonance Imaging of Brain of this young patient shows low signal

dilated perivascular spaces on T1 sequences and high signal dots on T2

sequences.

Discussion

With Magnetic Resonance imaging predominating the neuroimaging,

Virchow-Robin spaces are frequently seen in axial slices of Magnetic

Resonance imaging Brain. These spaces represent dilated perivascular

subarachnoid spaces around the arterial arcades. They are frequently

seen as a normal finding and should not be mistaken for pathology like

lacunar infarcts. Their signal characteristics correspond to the

signal characteristics of cerebrospinal fluid, i.e. appear darker on

T1 weighted sequences and brighter on T2 weighted sequences. The

Virchow-Robin spaces which surround the lenticulostriate arteries,

measure less than 5mm. In conclusion, these focally dilated normal

Virchow-Robin spaces should not be labelled mistakenly as well

demarcated parenchymal defects.

Diagnosis

Virchow-Robin spaces

[Guest guest]

Thanks for your help!-

-- In Mito , " alliecat1113 " wrote:

> Geri-Anne,

>

> My son also has dilated Virchow-Robin spaces (which is another name

> for the perivascular space). Dilated Virchow-Robin spaces are

> associated with developmental delay, headache, and neuropsychiatric

> disorders in children.

>

> Small perivascular spaces (less than 2 mm) are found in all age

groups

> and represent a normal finding. With advancing age they are found

with

> increasing frequency and size. On MRI it may be difficult to

> distinguish a lacunar infarct from a prominent perivascular space.

It

> can be useful to remember that lacunar infarcts occur in the upper

two

> thirds of the putamina, are not isointense to CSF on all pulse

> sequences unless they have undergone cystic changes and are usually

> larger (5mm or more). Perivascular spaces are typically smaller,

> bilateral and often symmetrical, and are in the inferior one third

of

> the putamen.

>

> The article below states that on MRI dilated Virchow-Robin spaces

can

> look like lacunar infarcts (Lacunar infarction is a unique stroke

type

> which are often silent clinically.)

>

>

>

> Virchow-Robin spaces

> S. Babu, N.

> Dept of Radiology, Alder Hey Childrens Hospital, Eton Road, L12 2AP

> Liverpool

> UNITED KINGDOM

> Sureshb@b...

>

> Patient

> Age: 13 year(s)

> Sex: F

>

> Clinical History and Imaging

>

> The patient had a history of complex partial seizures was referred

for

> MR imaging of brain. The study was normal. But the study showed

> Virchow-Robin spaces around centrum semiovale which are dilated

> perivascular extensions of the subarachnoid space. These should

not be

> considered pathological. Virchow-Robin spaces may be seen normally

in

> MR of brain in patients less than 40 years of age. They are

normally

> seen in patients with advancing age and hypertension. Here we

> illustrate a paediatric age group patient with dilated Virchow-

Robin

> spaces. Their morphology and signal characteristics on magnetic

> resonance imaging parallel the features of lacunar infarcts.

Magnetic

> Resonance Imaging of Brain of this young patient shows low signal

> dilated perivascular spaces on T1 sequences and high signal dots

on T2

> sequences.

>

> Discussion

>

> With Magnetic Resonance imaging predominating the neuroimaging,

> Virchow-Robin spaces are frequently seen in axial slices of

Magnetic

> Resonance imaging Brain. These spaces represent dilated

perivascular

> subarachnoid spaces around the arterial arcades. They are

frequently

> seen as a normal finding and should not be mistaken for pathology

like

> lacunar infarcts. Their signal characteristics correspond to the

> signal characteristics of cerebrospinal fluid, i.e. appear darker

on

> T1 weighted sequences and brighter on T2 weighted sequences. The

> Virchow-Robin spaces which surround the lenticulostriate arteries,

> measure less than 5mm. In conclusion, these focally dilated normal

> Virchow-Robin spaces should not be labelled mistakenly as well

> demarcated parenchymal defects.

>

> Diagnosis

>

> Virchow-Robin spaces