1.
AJNR Am J Neuroradiol
; 34(6): E65-8, 2013.
Article
in English
| MEDLINE
| ID: mdl-22837312
ABSTRACT
SUMMARY: Background gradients induced by magnetic susceptibility variations near air-filled cavities in the brain cause signal-intensity loss in gradient-echo images and shorten T2* considerably. With a correction method in which the exponential decay is restored with section-profile-dependent correction factors, parts of the signal intensity can be recovered. While uncorrected T2* values drop by 20% at a gradient strength of 75 µT/m, with correction and exponential excitation pulses, this boundary is pushed to 220 µT/m.
Subject(s)
Echo-Planar Imaging/methods , Image Enhancement/methods , Image Interpretation, Computer-Assisted/methods , Models, Theoretical , Parkinson Disease/pathology , Artifacts , Humans
2.
Transfusion
; 11(2): 110-6, 1971.
Article
in English
| MEDLINE
| ID: mdl-5550712
Subject(s)
Automation , Coombs Test/instrumentation , Blood Group Antigens , Erythrocytes/immunology , Humans , Methods
3.
J Lab Clin Med
; 73(5): 722-33, 1969 May.
Article
in English
| MEDLINE
| ID: mdl-5779258