Let G be a connected graph with n vertices. Then the class of graphs having vertices is denoted by Gn. The subclass 5 cycles are Gn5. classification G∈Gn5 depends on number edges and sum degrees graph. Any in Gn5 contains five linearly independent at least n+3 5-cyclic must equal to twice n+4. In this paper, minimum degree distance cyclic investigated. To find some transformations T have been d...

The short half-life positron emitter 13N, as labeled ammonia (13NH4+), was evaluated as a myocardial imaging agent. Regional myocardial uptake of 13NH4 correlated with the distribution of labeled microspheres in experimental myocardial infarction. Using intravenous 13NH4+, myocardial scintigraphy was performed in 85 cardiac patients and 27 normal subjects. Ninety-five scintigrams were suitable ...

stress-only MPI SPECT (≈3 mSv), rest-stress MPI PET Rubidium-82 (≈3 mSv), and rest-stress MPI PET 13N (≈2 mSv) are represented in the recent consensus document (3). In addition, as defined by the authors, novel SPECT camera technology may allow us to reduce radiation doses with SPECT imaging (5). Stress-only MPI use may be encouraged whenever possible to reduce radiation exposure. Finally, in f...

A technique is described for the investigation of regional lung function in infants and children using 13N and a gamma camera. Boluses of isotopic gas are inhaled and perfused while the lung fields are scanned. The child is lightly sedated and breathes normally throughout. Regional function is assessed in terms of the distribution of gas and blood, and the balance between ventilation and perfus...