Study of the Contribution of the State of Water to the Gel Properties of a Photocrosslinked Polyacrylic Acid Hydrogel using Magnetic Resonance Imaging

2014 ◽  
Vol 103 (11) ◽  
pp. 3532-3541 ◽  
Author(s):  
Yoshinori Onuki ◽  
Naoki Hasegawa ◽  
Chihiro Kida ◽  
Yasuko Obata ◽  
Kozo Takayama
2019 ◽  
Vol 29 (2) ◽  
pp. 83-94 ◽  
Author(s):  
Chun Xiang Tang ◽  
Steffen E. Petersen ◽  
Mihir M. Sanghvi ◽  
Guang Ming Lu ◽  
Long Jiang Zhang

2019 ◽  
Vol 44 (2) ◽  
pp. 22-27
Author(s):  
T. L. Pavlova ◽  
G. A. Kotova ◽  
G. A. Gerasimov

The urgency of the problem of endocrine ophthalmopathy (EOP) is currently in no doubt. This is due to the fact that relatively recently methods of objective assessment of the state of the eyeball and orbital tissues using ultrasound (ultrasound), computed tomography (CT) and magnetic resonance imaging (MRI) have appeared. At the same time, the etiology and pathogenesis of EOP are not well understood, which undoubtedly affects the validity and effectiveness of various treatment methods.


HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 898D-898 ◽  
Author(s):  
Anne Fennell ◽  
M.J. Line ◽  
M. Faust

Changes in water status have been associated with various stages of dormancy and freezing tolerance in woody perennials. Recent studies in apple indicate that changes in the state (bound vs. free) of bud water are strongly correlated with the end of dormancy. In this study nuclear magnetic resonance imaging (NMRI) was used to monitor changes in the state of bud water during the photoperiodic induction of endo-dormancy in Vitis riparia. Bud water status was monitored using proton relaxation times from T1 and T2 images determined at 2, 4, and 6 weeks of long (LD) or short (SD) photoperiod treatments. Bud dormancy was determined by monitoring budbreak in plants defoliated after photoperiod treatments. NMRI allowed nondestructive monitoring of changes in tissue water state. T1 and T2 maps indicated changes in the state of the water in bud and stem tissues during the 6 weeks of treatment. Differences in relaxation times for nondormant and dormancy-induced (reversible) buds were not clear. However, T2 relaxation times were lower in the dormant buds than in the nondormant buds.


1993 ◽  
Vol 39 (6) ◽  
pp. 57-62
Author(s):  
T. S. Zenkova ◽  
I. A. Fedin

In recent years, it has become apparent that the incidence of diseases of the hypothalamic-pituitary system is extremely high. The clinical manifestations of diseases such as acromegaly, Itsenko Cushing's disease, primary hyperprolactinemic hypogonadism are considered to be well known [8, 9, 32, 45]. However, to select the optimal method of treatment in each specific clinical situation, it is imperative for the clinician to obtain information about the state of the main structural link of the pathological process - the pituitary gland


2018 ◽  
Vol 34 (3) ◽  
pp. 333-336 ◽  
Author(s):  
Idan Roifman ◽  
D. Ian Paterson ◽  
Laura Jimenez-Juan ◽  
Matthias G. Friedrich ◽  
Andrew G. Howarth ◽  
...  

2021 ◽  
Vol 11 (6) ◽  
pp. 2596
Author(s):  
Shanti Marasini ◽  
Huan Yue ◽  
Son-Long Ho ◽  
Ji-Ae Park ◽  
Soyeon Kim ◽  
...  

Ultrasmall nanoparticles are potential candidates for application as high-performance imaging agents. Herein, we present the synthesis and characterization of folic acid (FA)-conjugated polyacrylic acid (PAA)-coated MnO nanoparticles with an average particle diameter of 2.7 nm. FA conferred cancer-targeting ability, while PAA conferred good colloidal stability and low cellular cytotoxicity on the FA-PAA-coated MnO nanoparticles. Further, the nanoparticles exhibited a high relaxivity (r1) value of 9.3 s−1mM−1 (r2/r1 = 2.2). Their application potential as cancer-targeting T1 magnetic resonance imaging contrast agents was confirmed by their enhanced T1 contrast enhancements at the brain cancer (U87MG) site upon intravenous administration to mice tails.


2011 ◽  
Vol 10 (3) ◽  
pp. 37-43
Author(s):  
V. D. Zavadovskaya ◽  
L. M. Ogorodova ◽  
T. V. Zhogina ◽  
Z. A. Mayevskaya ◽  
I. S. Remzantseva ◽  
...  

The results of joints's magnetic resonance imaging of 10 patients with severe form of hemophilic artropathy are discussing in this article. The purpose of research was to study the state of soft tissue and bone intraarticulare's structures in present group of patients. The form of bones, condition of an articulate cartilage, the joint’s tendons and ligaments, synovium, presence of an intraarticulate exudate, presence and extent of adjournment haemosiderin, and also signal characteristics of a marrow were estimated.


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