Two ocean acoustics experiments demonstrating the implementation of a time reversal mirror have been conducted. Pulsed sound (50-ms with center frequency 445 Hz) was refocused to the position of a probe source out to ranges as great as 30 km in 125-m deep water. In addition, a technique to refocus at ranges other than that of the probe source also was demonstrated. These results are summarized ...

purpose: to design and manufacture iodine 125 radioactive plaques which can be used in patients with ocular melanoma, and to evaluate the efficacy of plaques in an animal model. methods: this prospective basic study was performed in collaboration with farabi hospital and tehran atomic energy agency. the iodide 125 plaques were designed and manufactured based on the collaborative ocular melanoma...

we report a case of florid polypoid endometriosis presenting with advanced bulky disease in pelvis with serum ca – 125 levels of 7844u/ml. the extent of tumor, ct scan findings, elevated serum ca – 125 levels were suggestive of ovarian malignancy. histopathology demonstrated endometrial glands and stroma. glands were neither crowded nor complex and were separated by a fibromatous stroma that co...

background: iodine brachytherapy sources with low photon energies have been widely used in treating cancerous tumors. dosimetric parameters of brachytherapy sources should be determined according to aapm tg-43u1 recommendations before clinical use. monte carlo codes are reliable tools in calculation of these parameters for brachytherapy sources. materials and methods: dosimetric parameters (dos...

Purpose: In the current study, we aimed to look into macroscopic and microscopic dose enhancement effect of metallic nanoparticles in interstitial brachytherapy gastric adenocarcinoma by Iodine-125 source using a nano-lattice model MCNPX (2.7) MCNP6.1 codes. Materials methods: Based on simulation containing radiation tumor tissue with cellular compartments loaded 7 mg/g spherical nanoparticles,...