Comparison of CT, low-field-strength MR imaging, and high-field-strength MR imaging. Work in progress.

Abstract:

:To assess objectively the sensitivity and specificity of low-field-strength (0.064 T) magnetic resonance (MR) imaging, a prospective blind study of 280 examinations was performed to compare low-field-strength MR imaging with computed tomography (CT) and with high-field-strength (1.5-T) MR imaging of the cranium. The sensitivity (defined as the true-positive rate) with high-field MR imaging was superior to that with low-field MR imaging and CT in helping detect overall abnormalities. Sensitivities were generally similar over a broad range of specific cranial central nervous system diseases. Low-field and high-field MR imaging were equivalent in the blind diagnoses of neoplasms and white matter disease, whereas low-field MR and CT were equivalent in the blind diagnoses of contusion, subdural and epidural hematoma, sinus disease, normality, and abnormality. The specificities with low-field MR imaging and CT were substantially better than those with high-field MR imaging.

journal_name

Radiology

journal_title

Radiology

authors

Orrison WW Jr,Stimac GK,Stevens EA,LaMasters DL,Espinosa MC,Cobb L,Mettler FA Jr

doi

10.1148/radiology.181.1.1887020

subject

Has Abstract

pub_date

1991-10-01 00:00:00

pages

121-7

issue

1

eissn

0033-8419

issn

1527-1315

journal_volume

181

pub_type

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