Nuclear agents characteristics

Pandurangi, R.S. et al. (1997a) Recent trends in the evaluation of photochemical insertion characteristics of heterobifuncdonal perfluoroaryl azide chelating agents Biochemical implications in nuclear medicine. Photochem. Photobiol. 65(2), 208-221. 

While the guidance provided in this book is designed to minimize exposure to weapons of mass destruction, it will not eliminate the possibility for exposure. For this reason, it is important to understand the general characteristics of nuclear, chemical, and biological agents, the symptoms of exposure, and potential treatment options. For additional details on chemical structure, chemical characteristics, pathology, and field behavior, see References 1 through 3. 

Relaxivity is the term given to a contrast agent s characteristic potency to decrease the nuclear spin relaxation times of water protons. Relaxivity is defined by the following relationship ... 

The NS 900 put into operation in 1970 was the very first vessel of designs 705 and 705K. In 1972 because of failure of NS primary circuit s auxiliary pipelines and impossibility of their repair, the NS was taken out of service after expiration of only 10% of fuel lifetime in the reactor. The RC was cut out of NS, and free cavities of the primary circuit were filled with preservative agents on furfurol basis. A bitumen-layer of about 1000 mm was laid over the whole surface of the upper deck of RC including the reactor upper head. Under such condition the RC is to be stored with nuclear fuel for long within the waterborne storage center. Some characteristics of NS, design 705, are demonstrated in Tables 3, 4 and 5. 

Heart Agents. Routine myocardial perfusion imaging in nuclear medicine started with ° T1 thallous chloride. While ° T1+ is efficiently perfused into the myocardium, the long half-life and imaging characteristic s are not optimal for nuclear medicine imaging and cationic Tc-based perfusion agents were desired. 

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