[MRI of the pituitary adenomas with reference to the hormonal activity].
No To Shinkei
; 47(12): 1165-9, 1995 Dec.
Article
em Ja
| MEDLINE
| ID: mdl-8534553
ABSTRACT
Many studies in Magnetic Resonance Imaging (MRI) of pituitary adenomas are already performed. However, few reports exist about MRI findings of pituitary adenomas with reference to the hormonal activity, therefore, we evaluated this problem on the viewpoint of the signal intensity in MRI and pathological features. Fifteen patients with growth hormone producing adenoma (GH-group), 6 patients with prolactin producing adenoma (PRL-group), 15 patients with endocrinologically non-functioning adenoma (Null-group) and 9 cases with normal pituitary gland (normal control group) were examined. Signal intensity values in adenoma (or anterior lobe in normal control group) and in pons as standard value were measured in each cases, then their rates were calculated as signal intensity ratio (SIR). In 24 cases (14 in GH-group, 3 in PRL-group, 7 in Null-group), cellular density were examined with surgically resected specimens. In the T1-weighted images (T1 WIs), PRL-group and Null-group presented more hypointense tendency than normal control group. In the T2-weighted images (T2 WIs), only Null-group presented more hyperintense tendency than other groups. But significant correlation was not observed between SIR and cellular density.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hipófise
/
Neoplasias Hipofisárias
/
Hormônio do Crescimento
/
Imageamento por Ressonância Magnética
/
Adenoma
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
Idioma:
Ja
Revista:
No To Shinkei
Ano de publicação:
1995
Tipo de documento:
Article
País de afiliação:
Japão