A50-year-old white man presented with in-stent restenosis in April 1998. He had undergone angioplasty with stent implantation for a lesion in the right coronary artery in December 1977, when he was 29 years old. At that time, he was enrolled in a placebo-controlled, randomized trial of g-irradiation to prevent recurrent in-stent restenosis (Washington Radiation In-Stent Restenosis Trial [WRIST]...

Brachytherapy: True or False? To the Editor: We read with great interest the article about the mechanism of action of endovascular brachytherapy after balloon angioplasty published by Sabaté et al.1 Intravascular ultrasound (IVUS) imaging provides an extremely effective means of examining vessel changes after interventions and it seems to be critical in the objective evaluation of radiation the...

ndothelial cells form a continuous syncytium that sepaates the intravascular and extravascular space. The endohelium is a selectively permeable and metabolically active ascular component that regulates important pathophysioogical processes such as hemostasis, thrombosis, and synhesis of growth factors, nitric oxide, and matrix proteins. ndothelial dysfunction is one of the earliest events in th...

background and aims . dentists administer thousands of local anesthetic injections every day. injection to a highly vascular area such as pterygomandibular space during an inferior alveolar nerve block has a high risk of intravascular needle entrance. accidental intravascular injection of local anesthetic agent with vasoconstrictor may result in cardiovascular and central nervous system toxicit...

PURPOSEImage-guided adaptive brachytherapy (IGABT) recently has shown excellent clinical outcomes with superior local control and less toxicity. For IGABT, T2W (T2-weighted) MRI is the gold standard. However, studies have that target delineation same results in uncertainties, poor interobserver variabilities, low conformity indices for high-risk volume contours. In this study, we investigate ro...

Brachytherapy reduces the post radiation sequalae as dose required is lower than external beam therapy (EBRT) and limits area of exposure. This case report outlines two different patients managed by fabrication carrier prosthesis for duration brachytherapy.

introduction in this study, we aimed to calculate dose enhancement factor (def) for gold (au) and iron (fe) nanoparticles (nps) in brachytherapy and teletherapy, using monte carlo (mc) method. materials and methods in this study, a new algorithm was introduced to calculate dose enhancement by aunps and fenps for iridium-192 (ir-192) brachytherapy and cobalt-60 (co-60) teletherapy sources, using...