[High dosage administration of paramagnetic contrast media in diagnosis of focal brain lesions].
In analogy with high-dose contrast-enhanced CT, there have been a few studies during recent years that have dealt with high-dose paramagnetic contrast dyes in MRI. One reason for these studies was the development of new and low-osmolar contrast agents in the MR field. Depending on the clinical problem, a high-dose contrast study in MRI is rarely indicated: (1) in metastatic disease, MR imaging with high-dose contrast material is indicated when the standard dose study is negative or only shows a solitary cerebral lesion or a number of lesions just suitable for radiosurgery; (2) in patients with malignant glioma the high-dose study allows better definition of the tumor margins. If a radical surgical approach is planned, the diagnostic potential should be fully used; if only a biopsy or subtotal debulking is planned, a standard dose study is enough. (3) in patients with MS, a high-dose study is only recommended within therapeutic trials in which the number of active plaques is a primary variable.
Forsting
M
M
Abteilung Klinische Neuroradiologie, Universitätsklinik Heidelberg.
Reith
W
W
Hartmann
M
M
Knauth
M
M
D001921:Brain / Q000473:pathology; D001927:Brain Diseases / Q000175:diagnosis*; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000556:secondary; D003287:Contrast Media / Q000008:administration & dosage*; D003937:Diagnosis, Differential; D004305:Dose-Response Relationship, Drug; D005910:Glioma / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009103:Multiple Sclerosis / Q000175:diagnosis
D003287:Contrast Media