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Titolo:
MAGNETIC-RESONANCE-IMAGING MEASUREMENTS AND CLINICAL CHANGES ACCOMPANYING TRANSTENTORIAL AND FORAMEN MAGNUM BRAIN HERNIATION
Autore:
REICH JB; SIERRA J; CAMP W; ZANZONICO P; DECK MDF; PLUM F;
Indirizzi:
CORNELL UNIV,MED CTR,NEW YORK HOSP,DEPT NEUROL,525 E 68TH ST NEW YORKNY 10021 CORNELL UNIV,MED CTR,NEW YORK HOSP,DEPT NEUROL,525 E 68TH ST NEW YORKNY 10021 CORNELL UNIV,MED CTR,NEW YORK HOSP,DEPT RADIOL,DIV NEURORADIOL NEW YORK NY 10021 GREENWICH HOSP,DEPT NEUROL GREENWICH CT 00000
Titolo Testata:
Annals of neurology
fascicolo: 2, volume: 33, anno: 1993,
pagine: 159 - 170
SICI:
0364-5134(1993)33:2<159:MMACCA>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRANIAL COMPUTED TOMOGRAPHY; CEREBELLAR INFARCTION; CONSCIOUSNESS; DIAGNOSIS; LEVEL; HYDROCEPHALUS; DISPLACEMENT; TUMORS; MRI;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
J.B. Reich et al., "MAGNETIC-RESONANCE-IMAGING MEASUREMENTS AND CLINICAL CHANGES ACCOMPANYING TRANSTENTORIAL AND FORAMEN MAGNUM BRAIN HERNIATION", Annals of neurology, 33(2), 1993, pp. 159-170

Abstract

Current concepts of brain herniation have depended largely on correlating clinical signs and symptoms with indirect radiographic studies and the results of postmortem neuropathology. This article describes measurements on midsagittal magnetic resonance imaging (MRI) scans that distinctly define normal and abnormal rostral-caudal relationships between the diencephalic-mesencephalic junction and the plane of the tentorial incisura, herein termed the incisural line. We similarly provide quantitative MRI scan measurements relating the cerebellum and the plane of the foramen magnum, termed the foramen magnum line. Measurementsfrom 156 midsagittal and 63 coronal MRI scans performed on 123 normaladults, placed the iter of the aqueduct 0.2 +/- 0.8 mm (mean +/- SD) below the incisural line and the cerebellar tonsils 0.1 +/- 2.1 mm below the foramen magnum line. Defining 2 SD from these norms as abnormal, 23 patients with intracranial mass or obstructive lesions showed 4 distinct patterns of brain herniation, i.e., upward or downward transtentorial shift with or without accompanying cerebellar tonsillar herniation. Five patients with posterior fossa masses demonstrated displacement of the iter above the incisura ranging from 1.6 to 6.3 mm. Eighteen patients with supratentorial masses demonstrated displacement of theiter ranging from 2.0 to 11.0 mm below the incisura. Two-thirds of patients with upward and one-half of those with downward transtentorial shift had concurrent tonsillar herniation. In acute illnesses, MRI scan changes anticipated or confirmed clinical signs of brain herniation. In chronic cases, clinical and MRI scans correlated less well, with MRI sometimes revealing major degrees of anatomical herniation well in advance of clinical abnormalities.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 14:19:37