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University of Texas Rio Grande Valley

Physics and Astronomy Faculty Publications and Presentations

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Full-Text Articles in Physical Sciences and Mathematics

Mri Characterization Of Cobalt Dichloride-N-Acetyl Cysteine (C4) Contrast Agent Marker For Prostate Brachytherapy, Tze Yee Lim, R. Jason Stafford, Rajat J. Kudchadker, Madhuri Sankaranarayanapillai, Geoffrey Ibbott, Arvind Rao, Karen S. Martirosyan, Steven J. Frank May 2014

Mri Characterization Of Cobalt Dichloride-N-Acetyl Cysteine (C4) Contrast Agent Marker For Prostate Brachytherapy, Tze Yee Lim, R. Jason Stafford, Rajat J. Kudchadker, Madhuri Sankaranarayanapillai, Geoffrey Ibbott, Arvind Rao, Karen S. Martirosyan, Steven J. Frank

Physics and Astronomy Faculty Publications and Presentations

Brachytherapy, a radiotherapy technique for treating prostate cancer, involves the implantation of numerous radioactive seeds into the prostate. While the implanted seeds can be easily identified on a CT image, distinguishing the prostate and surrounding soft tissues is not as straightforward. Magnetic Resonance Imaging (MRI) offers superior anatomical delineation, but the seeds appear as dark voids and are difficult to identify, thus creating a conundrum. Cobalt dichloride-N-acetylcysteine (C4) has previously been shown to be promising as an encapsulated contrast agent marker. We performed spin-lattice relaxation time (T1) and spin-spin relaxation time (T2) measurements of C4 solutions with varying cobalt dichloride …


Thermosensitive Magnetic Nanoparticles For Self-Controlled Hyperthermia Cancer Treatment, Karen S. Martirosyan Jan 2012

Thermosensitive Magnetic Nanoparticles For Self-Controlled Hyperthermia Cancer Treatment, Karen S. Martirosyan

Physics and Astronomy Faculty Publications and Presentations

Magnetic nanoparticles show remarkable phenomena such as superparamagnetism, high field irreversibility and high saturation magnetization [1]. The study of magnetic nanoparticles has been a very active research field due to many important applications such as drug delivery, imaging and hyperthermia cancer treatment [2]. Hyperthermia has been used for many years to treat a wide variety of tumors in patients and used as well as an adjunct to cancer radiotherapy or chemotherapy [3,4]. Its use is based on the fact that tumor cells are more sensitive to temperature in the range of 42–45°C (which yields necrosis, coagulation, or carbonization) than normal …