[Nuclear magnetic resonance imaging in the area of the cranial base].
Short TR (time repetition) and TE (time echo) images usually display pathologic structures unsatisfactorily. Tumors appear larger in MR than in computer tomography (CT). Additional examinations with intensive x-ray exposure are not necessary, as the better soft tissue contrast in MR allows for a distinct demarcation of the pathologic structure. T2-weighted images of brain stem angioma and pinealoma are not better than T1-weighted images. In the skull-base area, the sagittal plane best displays the anatomical-pathological relationship. The second plane is necessary for three-dimensional demarcation. On the second plane, the use of identical sequences is helpful, as the optical comparison of light intensity in pathologic tissue is easier.
Stichnoth
F A
FA
Abteilung Neuroradiologie, Universität Göttingen.
Rama
B
B
Rittmeyer
K
K
D001932:Brain Neoplasms / Q000473:pathology*; D001933:Brain Stem / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D010902:Pituitary Gland / Q000473:pathology; D010911:Pituitary Neoplasms / Q000473:pathology*; D014057:Tomography, X-Ray Computed
Kernspintomographie (MR) im Bereich der Schädelbasis.