Now showing items 201-205 of 205
Direct chromatographic resolution and isolation of the four stereoisomers of meta -hydroxyphenylpropanolamine
(John Wiley & Sons, Inc., 1999)
Methods for the direct chiral chromatographic separation of the four stereoisomers of meta -hydroxyphenylpropanolamine (MHPA) on an analytical and preparative scale are described. Separations were carried out on a Crownpak ...
High-resolution pulmonary arterio- and venography using multiple-bolus multiphase 3D-gd-mRA
(John Wiley & Sons, Inc., 1999-09)
The purpose of this study was to demonstrate selective visualization of pulmonary arteries and veins with high spatial resolution for improved detection of vascular pathologies. Time-resolved pulmonary three-dimensional ...
Quantitative in vivo receptor binding IV: Detection of muscarinic receptor down-regulation by equilibrium and by tracer kinetic methods
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1991-09)
Newly-developed methods for estimation of in vivo binding to neurotransmitter receptors should enable the detection and quantification of physiologic or pathologic changes in receptor numbers. In the present study, both ...
In vivo studies of acetylcholinesterase activity using a labeled substrate, N -[ 11 C]methylpiperdin-4-yl propionate ([ 11 C]PMP)
(John Wiley & Sons, Inc., 1996-02)
Two esters, N -[ 11 C]methylpiperidyl acetate ([ 11 C]AMP) and N -[ 11 C]methylpiperidyl propionate ([ 11 C]PMP), were synthesized in no-carrier-added forms and evaluated as in vivo substrates for brain acetylcholinesterase ...
Musculoskeletal computed radiography in children: scatter reduction and improvement in bony trabecular sharpness using air gap placement of the imaging plate
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1997-02)
The effect of various air gaps on computed radiographic musculoskeletal images was investigated using a knee phantom. Scatter to primary radiation ratios were measured using the beam stop method at air gaps ranging from 0 ...