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X-ray computer tomography (CT) has previously been reported as an evaluation tool for polymer gel (PAG) dosimeters. In this study, the imaging protocol of a Siemens Emotion X-ray CT scanner was optimized to evaluate PAGAT normoxic gel dosimeters. The scan parameters were optimized as 130 kV and 150 mA with a slice thickness of 3 mm for smaller fields and 5(More)
Stereotactic radiosurgery (SRS) is a technique for obliterating intracranial targets that are inaccessible or unsuitable for open surgical techniques. By means of well-collimated beams of ionizing radiation, a high-dose, single fraction of radiation is delivered to a defined volume of tissue. The entrance and exit doses are distributed in such a way that(More)
OBJECTIVE Pollen grains of the Euphorbiaceae family are well known causative agents of respiratory allergies in India, European countries and USA. Mallotus phillipensis belongs to the same family and may have some common allergenic properties. It has thus been evaluated for the first time in Indian population for its pollinosis causing properties. METHODS(More)
OBJECTIVE To evaluate the obliteration rate and clinical outcome following linear accelerator (LINAC)-based stereotactic radiosurgery (SRS) for intracranial arteriovenous malformation (AVM) in pediatric patients (age ≤18 years). METHODS Factors associated with the obliteration rate and neurologic complications were studied retrospectively in pediatric(More)
Stereotactic radiosurgery requires sub-millimetre accuracy in patient positioning and target localization. Therefore, verification of the linear accelerator (linac) isocentre and the laser alignment to the isocentre is performed in some clinics prior to the treatment using the Winston–Lutz (W–L) test with films and more recently with images obtained using(More)
The theme of the conference was " Brachytherapy – an Immortal Art ". The pre-conference workshop (26 th August 2016) was conducted at Cancer Institute (WIA), Adyar, Chennai. The workshop included live hands-on demonstration of interstitial brachyther-apy procedures for oropharyngeal cancer (base of tongue), and intra-operative brachytherapy for soft tissue(More)
Permanent implantation of radioactive seeds is a viable and effective therapeutic option widely used today for early-stage prostate cancer. The implant technique has improved considerably during the recent years due to the use of image guidance; however, real-time dose distributions would allow potential cold spots to be assessed and additional seeds added.(More)
AIMS To evaluate the efficacy of the deep inspirational breath-hold (DIBH) technique and its dosimetric advantages over the free breathing (FB) technique in cardiac (heart and left anterior descending artery [LAD]) and ipsilateral lung sparing in left-sided post-mastectomy field-in-field conformal radiotherapy. DIBH is highly reproducible, and this study(More)
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