Methods MRI imaging of the pituitary gland were acquired in 280 healthy subjects and volunteers, the signal intensity of the posterior pituitary lobe and pons were measured on midline sagittal T1-weighted images.
Signal intensity of normal vertebral body with adjuncts,intervertebral discs,cerebrospinal fluid and spinal cord were observed. The signals and clearness of the herniation disc's on GRE OP T1WI were compared with that of SE T1WI images.
分别观察正常椎体、椎间盘、脑脊液、脊髓、腰椎附件在GREOP T1WI的表现,并对GRE OP T1WI和SE T1WI序列对突出椎间盘的信号和显示的清晰度进行比较。
The tumors exhibited an iso intensity signal on T 1WI while a high intensity signal on T 2WI with ectatio tormous small vessels within the tumors Gd DTPA enhanced MRI showed similar appearance as CT scan.
Materials and Methods: The median sagittal sections MRI of 189 normal adults, pharynx were analysed puting special emphysis on the shape, site, thickness, length of the soft palate, posterior pharyngeal wall,epiglottis, larynx, cricord part of esophagus with concomitant MRI signal intensities.
The signal intensity of most tumors (33) on T 1WI is iso to hypo intensity, only 2 is hyper intensity; while the signal intensities of all lesions on T 2WI are hyper than skeletel muscles and lower than myometriums, the changing patterns (changes on different echos of T 2 weighted imagings) are similar to that of skeletel muscles.
(2) metastatic tumor (n=30), their images showed destructions of pedicles of vertebral and epidural mass as the distinctive sign, and hyperintense or mixed hyperintense signal on T2WI and enhanced T1WI of compressed vertebrae;
Unlike the As2Se3 glass, for which the signal intensity increases almost linearly with an increase in the irradiation dose, the curves I(D) for ternary glasses are characterized by saturation dependent on the copper content in the network.
In comparison with a single-crystal monochromator, this device offers a 3.3-fold increase signal intensity and a slightly (1.5 times) worse resolution.
EXAFS and XANES data indicate an increase in the signal intensity in the Ti-Ti direction and a decrease in electron density on titanium atoms for [TiFe0.95Zr0.03Mo0.02]H0.36.
This is a process of complex bioexponential kinetics presented in spin diffusion spectra as a change in water signal intensity dependent on the protein postexcitation time.
The temperature dependence of the signal intensity from humid samples shows a decrease in temperature of freezing of the adsorbed water and presence of unfrozen water.
The intensity signal obtained under pulsed exciton generation as a function of time is characterized by two decay times, and the polarization signal, by a third time which is strongly dependent on the applied field.
MRI studies demonstrated extensive regions with high intensity signal in the brain stem and/or basal ganglia on T2-weighted images obtained during the acute stage of the disease in three patients.
A weak diffuse scattered intensity signal is measured very near the Bragg peaks.
A third much smaller intensity signal at 1.7-1.8?ppm due to the reaction of a polyborate compound with the protein is also present.
MRI shows T1-weighted low-intensity signal and T2-weighted high-intensity signal with a surrounding area of intermediate low-intensity signal.