Magnetic susceptibility effects secondary to out-of-plane air in fast MR scanning

Areas of signal loss in brain overlying air-containing structures at the skull base are commonly observed on axial fast MR images. The nature of this effect, which can mimic the appearance of cerebral hemorrhage, is investigated in a phantom study and in a normal volunteer. The magnitude of the sign...

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Bibliographic Details
Published inAmerican journal of neuroradiology : AJNR Vol. 9; no. 3; pp. 439 - 442
Main Authors Schick, RM, Wismer, GL, Davis, KR
Format Journal Article
LanguageEnglish
Published Oak Brook, IL Am Soc Neuroradiology 01.05.1988
American Society of Neuroradiology
Subjects
Biological and medical sciences
Brain - pathology
Brain Neoplasms - pathology
Cerebral Hemorrhage - pathology
Humans
Intracranial Arteriovenous Malformations - pathology
Investigative techniques, diagnostic techniques (general aspects)
Magnetic Resonance Imaging - methods
Medical sciences
Models, Anatomic
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Summary:Areas of signal loss in brain overlying air-containing structures at the skull base are commonly observed on axial fast MR images. The nature of this effect, which can mimic the appearance of cerebral hemorrhage, is investigated in a phantom study and in a normal volunteer. The magnitude of the signal loss is found to be inversely related to the distance of the scanning plane from the air-containing structure and directly related to the echo time.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0195-6108
1936-959X