scholarly journals Influence of low grade exercise on skeletal scintigraphy using Tc-99m methylene diphosphonate

2015 ◽  
Vol 18 (2) ◽  
pp. 61-64 ◽  
Author(s):  
Amr Amin ◽  
Maha Abd El-Kareem ◽  
Abu Baker Yahia
2018 ◽  
Vol 19 (2) ◽  
pp. 152
Author(s):  
Pupree Mutsuddy ◽  
Shamim MF Begum ◽  
Rahima Perveen ◽  
Mohammad Simoon Salekin

<p>Asymmetrical uptake of 99m Tc MDP (methylene diphosphonate) in skeletal scintigraphy in extremity may lead to confusion in the diagnosis of metastasis or complex regional pain syndrome. After the exclusion of possible contamination in this report a case was presented with asymmetrical uptake of MDP in the upper extremity from accidental intra-arterial injection.</p><p>Bangladesh J. Nuclear Med. 19(2): 152-154, July 2016</p>


2014 ◽  
Vol 39 (2) ◽  
pp. 190-192
Author(s):  
Ankur Pruthi ◽  
Vishu Vijayant Chauhan ◽  
S.A. Rao ◽  
P.S. Choudhury

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Valentina Lavelli ◽  
Corinna Altini ◽  
Teresa Magaro ◽  
Artor Niccoli Asabella

2017 ◽  
Vol 32 (4) ◽  
pp. 369
Author(s):  
Anirban Mukherjee ◽  
Piyali Chatterjee ◽  
Deepanjan Mitra ◽  
Amit Nautiyal ◽  
Anindya Roy

Author(s):  
Thomas R. McKee ◽  
Peter R. Buseck

Sediments commonly contain organic material which appears as refractory carbonaceous material in metamorphosed sedimentary rocks. Grew and others have shown that relative carbon content, crystallite size, X-ray crystallinity and development of well-ordered graphite crystal structure of the carbonaceous material increases with increasing metamorphic grade. The graphitization process is irreversible and appears to be continous from the amorphous to the completely graphitized stage. The most dramatic chemical and crystallographic changes take place within the chlorite metamorphic zone.The detailed X-ray investigation of crystallite size and crystalline ordering is complex and can best be investigated by other means such as high resolution transmission electron microscopy (HRTEM). The natural graphitization series is similar to that for heat-treated commercial carbon blacks, which have been successfully studied by HRTEM (Ban and others).


Author(s):  
V.K. Berry

There are two strains of bacteria viz. Thiobacillus thiooxidansand Thiobacillus ferrooxidanswidely mentioned to play an important role in the leaching process of low-grade ores. Another strain used in this study is a thermophile and is designated Caldariella .These microorganisms are acidophilic chemosynthetic aerobic autotrophs and are capable of oxidizing many metal sulfides and elemental sulfur to sulfates and Fe2+ to Fe3+. The necessity of physical contact or attachment by bacteria to mineral surfaces during oxidation reaction has not been fairly established so far. Temple and Koehler reported that during oxidation of marcasite T. thiooxidanswere found concentrated on mineral surface. Schaeffer, et al. demonstrated that physical contact or attachment is essential for oxidation of sulfur.


Author(s):  
Gejing Li ◽  
D. R. Peacor ◽  
D. S. Coombs ◽  
Y. Kawachi

Recent advances in transmission electron microscopy (TEM) and analytical electron microscopy (AEM) have led to many new insights into the structural and chemical characteristics of very finegrained, optically homogeneous mineral aggregates in sedimentary and very low-grade metamorphic rocks. Chemical compositions obtained by electron microprobe analysis (EMPA) on such materials have been shown by TEM/AEM to result from beam overlap on contaminant phases on a scale below resolution of EMPA, which in turn can lead to errors in interpretation and determination of formation conditions. Here we present an in-depth analysis of the relation between AEM and EMPA data, which leads also to the definition of new mineral phases, and demonstrate the resolution power of AEM relative to EMPA in investigations of very fine-grained mineral aggregates in sedimentary and very low-grade metamorphic rocks.Celadonite, having end-member composition KMgFe3+Si4O10(OH)2, and with minor substitution of Fe2+ for Mg and Al for Fe3+ on octahedral sites, is a fine-grained mica widespread in volcanic rocks and volcaniclastic sediments which have undergone low-temperature alteration in the oceanic crust and in burial metamorphic sequences.


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