Usefulness of Dynamic Magnetic Resonance Imaging in Brain Tumors
Journal of the Korean Radiological Society
;
: 605-611, 1994.
Article
Dans Coréen
| WPRIM
| ID: wpr-174986
ABSTRACT
PURPOSE:
To investigate the usefulness of dynamic MR imaging in the differential diagnosis of brain tumors. MATERIALS ANDMETHODS:
Dynamic MR imaging was performed in 43 patients with histopathologically proved brain tumrs. Serial images were sequentially obtained every 30 seconds for 3--5 minutes with use of spin-echo technique(TR 200msec/TE 15msec) after rapid injection of Gd-DTPA in a dose of 0.1mmol/kg body weight. Dynamics of contrast enhancement of the brain tumors were analyzed visually and by the sequential contrast enhancement ratio(CER).RESULTS:
On the dynamic MR imaging, contrast enhancement pattern of the gliomas showed gradual increase in signal intensity(SI) till 180 seconds and usually had a longer time to peak of the CER. The SI of metastatic brain tumors increased steeply till 30 seconds and then rapidly or gradually decreased and the tumors had a shorter time to peak of the CER. Meningiomas showed a rapid ascent in SI till 30 to 60 seconds and then made a plateau or slight descent of the CER. Lymphomas and germinomas showed relatively rapid increase of Sl till 30 seconds and usually had a longer time peak of the CER.CONCLUSION:
Dynamic MR imaging with Gd-DTPA may lead to further information about the brain tumors as the sequential contrast enhancement pattern and CER parameters seem to be helpful in discriminating among the brain tumors.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Poids
/
Encéphale
/
Tumeurs du cerveau
/
Imagerie par résonance magnétique
/
Germinome
/
Acide gadopentétique
/
Diagnostic différentiel
/
Gliome
/
Lymphomes
/
Méningiome
Type d'étude:
Etude diagnostique
Limites du sujet:
Humains
langue:
Coréen
Texte intégral:
Journal of the Korean Radiological Society
Année:
1994
Type:
Article
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS