1.
AJNR Am J Neuroradiol
; 34(6): E65-8, 2013.
Artigo
em Inglês
| MEDLINE
| ID: mdl-22837312
RESUMO
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.
Assuntos
Imagem Ecoplanar/métodos , Aumento da Imagem/métodos , Interpretação de Imagem Assistida por Computador/métodos , Modelos Teóricos , Doença de Parkinson/patologia , Artefatos , Humanos
2.
Transfusion
; 11(2): 110-6, 1971.
Artigo
em Inglês
| MEDLINE
| ID: mdl-5550712
3.
J Lab Clin Med
; 73(5): 722-33, 1969 May.
Artigo
em Inglês
| MEDLINE
| ID: mdl-5779258