TY - JOUR
T1 - Effect of dose and field strength on enhancement with paramagnetic contrast media
AU - Lindsey, R. O.
AU - Yetkin, F. Z.
AU - Prost, R.
AU - Haughton, V. M.
PY - 1994/11/23
Y1 - 1994/11/23
N2 - PURPOSE: To compare contrast enhancement per unit of dose of contrast medium in MR imaging at 0.5 and 1.5 T. METHODS: Contrast enhancement in images made at 0.5 and 1.5 T after 0.1 mmol/kg of gadopentetate dimeglumine and 0.3 mmol/kg of gadodiamide was measured and the degree of contrast enhancement in the cavernous sinus and pituitary gland compared. RESULTS: At both field strengths and both contrast medium doses, contrast enhancement was noted in the cavernous sinus, pituitary gland, infundibulum, maxillary sinus mucosa, falx cerebri, and choroid plexus on inspection of images. Enhancement was significantly and conspicuously less in the cavernous sinus and pituitary gland at 0.5 T (96% and 33%, respectively) than at 1.5 T (160% and 102%, respectively). No tissues were identified that enhanced only with the larger dose or higher field strength. CONCLUSION: In tissues that normally enhance after intravenous administration of gadolinium chelates, enhancement is greater at 1.5 T than at 0.5 T.
AB - PURPOSE: To compare contrast enhancement per unit of dose of contrast medium in MR imaging at 0.5 and 1.5 T. METHODS: Contrast enhancement in images made at 0.5 and 1.5 T after 0.1 mmol/kg of gadopentetate dimeglumine and 0.3 mmol/kg of gadodiamide was measured and the degree of contrast enhancement in the cavernous sinus and pituitary gland compared. RESULTS: At both field strengths and both contrast medium doses, contrast enhancement was noted in the cavernous sinus, pituitary gland, infundibulum, maxillary sinus mucosa, falx cerebri, and choroid plexus on inspection of images. Enhancement was significantly and conspicuously less in the cavernous sinus and pituitary gland at 0.5 T (96% and 33%, respectively) than at 1.5 T (160% and 102%, respectively). No tissues were identified that enhanced only with the larger dose or higher field strength. CONCLUSION: In tissues that normally enhance after intravenous administration of gadolinium chelates, enhancement is greater at 1.5 T than at 0.5 T.
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M3 - Article
C2 - 7863934
AN - SCOPUS:0028033907
SN - 0195-6108
VL - 15
SP - 1849
EP - 1852
JO - American Journal of Neuroradiology
JF - American Journal of Neuroradiology
IS - 10
ER -