Other Imaging Methods

OTHER IMAGING METHODS 5.1. -Space and displacement imaging 

Displacements of spins of the order of a few microns can be measured by means of (7-space imaging techniques. The PGSE method forms the basis for the -space measurements. The gradient pulses used for -space imaging are much larger and 

Cellular imaging with MRM using Tz and contrast magnetic labeling 

It is generally believed that cellular imaging with either coated or uncoated nanoparticles of iron oxide is equivalent since the biology of the cell is assumed to be unperturbed by the introduction of the magnetic label inside the cell. However, the recent report of Berry et that uncoated and dextran-coated iron oxide nanoparticles induce different cell response is a cautionary one. Moreover, anionic nanoparticles show a significantly higher affinity for some cells than dextran-coated particles, while van den Bos et have investigated the efficacy of cationic hposomes. The transferrin receptor 

The early promise of potential applications of MRM in studies of normal and abnormal development in animal model systems and humans is beginning to be realized. 

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In this study elemental mapping and other imaging methods by EPMA and XSAM as well as optical microsoHiy were applied fiH the evaluation of new bone formatirxi around the i >]ant vdiich was inserted in the mandible of rabbits. The results (m the Ti inqrlant and Ti/20%HAP FGM implant were then derived and compared each other. 

Wold PB, Fletcher JG, Johnson CS, Sandborn WJ (2003) Assessment of small bowel Crohn disease noninvasive peroral CT enterography compared with other imaging methods and endoscopy-feasibility study. Radiology 229 275-281... 

Gibril F, Reynolds JC, Doppman JL, et al. (1996) Somatostatin receptor scintigraphy its sensitivity compared with that of other imaging methods in detecting primary and metastatic gastrinomas. A prospective study. Ann Intern Med 125 26-34... 

Consequently, other imaging methods have been used or have been developed. For many years, IVU has been used for the diagnosis of urinary tract obstruction. Signs of obstruction include the demonstration of dilatation and delayed filling of the collecting system (Fig. 5.12a). On imaging, especially on IVU, the dilatation of the renal pelvis and calyces... 

US can be suggestive of dysplasia. Histology establishes the definite diagnosis, particularly in patients with disease detected later in life and not in early infancy. VCU is obligatory. Other imaging methods are used for additional workup, to confirm an otherwise normal urinary tract and to evaluate (split) renal function (isotope studies). 

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