Brain ventricular size in healthy elderly: comparison between evans index and volume measurement.

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Search: WFRF:(Ambarki Khalid) > Brain ventricular s...

Details
MARC

Ambarki, KhalidUmeå universitet,Radiofysik,Umeå universitet, Radiofysik, Sweden (author)

Brain ventricular size in healthy elderly: comparison between evans index and volume measurement.

Article/chapterEnglish2010

Publisher, publication year, extent ...

Lippincott Williams & Wilkins,2010
printrdacarrier

Numbers

LIBRIS-ID:oai:DiVA.org:umu-34864
https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-34864URI
https://doi.org/10.1227/01.NEU.0000370939.30003.D1DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-192717URI

Supplementary language notes

Language:English
Summary in:English

Part of subdatabase

SwePubSwePub

Classification

Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

BACKGROUND: A precise definition of ventricular enlargement is important in the diagnosis of hydrocephalus as well as in assessing central atrophy. The Evans index (EI), a linear ratio between the maximal frontal horn width and the cranium diameter, has been extensively used as an indirect marker of ventricular volume (VV). With modern imaging techniques, brain volume can be directly measured. OBJECTIVE: To determine reference values of intracranial volumes in healthy elderly individuals and to correlate volumes with the EI. METHODS: Magnetic resonance imaging (3 T) was performed in 46 healthy white elderly subjects (mean age +/- standard deviation, 71 +/- 6 years) and in 20 patients (74 +/- 7 years) with large ventricles according to visual inspection. VV, relative VV (RVV), and EI were assessed. Ventricular dilation was defined using VV and EI by a value above the 95th percentile range for healthy elderly individuals. RESULTS: In healthy elderly subjects, we found VV = 37 +/- 18 mL, RVV = 2.47 +/- 1.17%, and EI = 0.281 +/- 0.027. Including the patients, there was a strong correlation between EI and VV (R = 0.94) as well as between EI and RVV (R = 0.95). However, because of a wide 95% prediction interval (VV: +/-45 mL; RVV: +/- 2.54%), EI did not give a sufficiently good estimate of VV and RVV. CONCLUSION: VV (or RVV) and the EI reflect different properties. The exclusive use of EI in clinical studies as a marker of enlarged ventricles should be questioned. We suggest that the definition of dilated ventricles in white elderly individuals be defined as VV >77 mL or RVV >4.96 %. Future studies should compare intracranial volumes with clinical characteristics and prognosis.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Klinisk laboratoriemedicin hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Clinical Laboratory Medicine hsv//eng
Aged
brain ventricular volume and healthy elderly
cerebrospinal fluid
cerebral ventricles
hydrocephalus
volumetric magnetic resonance imaging
MEDICINE
MEDICIN

Added entries (persons, corporate bodies, meetings, titles ...)

Israelsson, HannaUmeå universitet,Neurologi,Umeå universitet, Neurologi, Sweden(Swepub:liu)hanis08 (author)
Wåhlin, AndersUmeå universitet,Radiofysik,Umeå universitet, Radiofysik, Sweden(Swepub:umu)arswan02 (author)
Birgander, RichardUmeå universitet,Diagnostisk radiologi,Umeå universitet, Diagnostisk radiologi, Sweden(Swepub:umu)ribi0006 (author)
Eklund, AndersUmeå universitet,Radiofysik,Umeå universitet, Radiofysik, Sweden(Swepub:umu)anek0025 (author)
Malm, JanUmeå universitet,Neurologi,Umeå universitet, Neurologi, Sweden(Swepub:umu)jama0002 (author)
Umeå universitetRadiofysik (creator_code:org_t)

Related titles

In:Neurosurgery: Lippincott Williams & Wilkins67:1, s. 94-990148-396X1524-4040

Internet link

Find in a library

Neurosurgery (Search for host publication in LIBRIS)

To the university's database

Find more in SwePub

By the author/editor: Ambarki, Khalid; Israelsson, Hann ...; Wåhlin, Anders; Birgander, Richa ...; Eklund, Anders; Malm, Jan

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Clinical Laborat ...

Articles in the publication: Neurosurgery

By the university: Umeå University; Linköping University

Search outside SwePub

Extend your search to:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se