Background: This study evaluates the dose distribution of the wedged tangential beam three-dimensionally planned conformal radiotherapy (3D-CRT) compared to the previously used (5 years ago) two-dimensionally (2D-RT) planned radiotherapy of the chest wall for postmastectomy breast cancer patients in Clinical Oncology and Nuclear Medicine Department, Mansoura University. Patients and Methods: Th...

PURPOSE To evaluate the dosimetric outcomes of a simple planning technique for improving intensity-modulated radiotherapy (IMRT) for nasopharyngeal cancer (NPC). METHODS For 39 NPC cases, generally acceptable original plans were generated and were improved by the two planning techniques, respectively: (1) a basal-dose-compensation (BDC) technique, in which the treatment plans were re-optimize...

BACKGROUND We would like to investigate the if IMRT produced better target coverage and dose sparing to adjacent normal structures as compared with 3-dimensional conformal radiotherapy (3DCRT) and lateral opposing fields (LOF) for patients with Graves' ophthalmopathy treated with retro-orbital irradiation. METHODS Ten consecutive patients diagnosed with Graves' ophthalmopathy were prospective...

INTRODUCTION Cutaneous squamous cell carcinoma with large nerve perineural (LNPN) infiltration of the base of skull is a radiotherapeutic challenge given the complex target volumes to nearby organs at risk (OAR). A comparative planning study was undertaken to evaluate dosimetric differences between volumetric modulated arc therapy (VMAT) versus intensity modulated radiation therapy (IMRT) in th...

PURPOSE This study describes the early clinical results and dosimetric parameters of intensity-modulated radiation therapy (IMRT) using a tomotherapy device in patients with primary bilateral synchronous breast cancer (PSBBC). METHODS Fourteen patients with bilateral breast cancer were treated with tomotherapy between January 2011 and October 2014. The treatment planning objectives were to co...

The objective of this study was to investigate the reliability and validity of the Pittsburgh Sleep Quality Index (PSQI) in a non-clinical sample consisting of younger and older adults. There has been little research validating the PSQI with respect to multinight recording as with actigraphy, and more validation is needed in samples not specifically selected for clinical disturbance. Also, the ...

Purpose: Craniospinal axis irradiation (CSI) is a method of treating various central nervous system malignancies. The large target volume typically includes entire spinal cord and whole brain. Dosimetric comparison was performed between tomotherapy, volumetric modulated arc therapy (VMAT), and 3D conformal radiation therapy (3D-CRT) for CSI. Methods and Materials: Five (n = 5) CSI patients were...

This paper illustrates the potential of FOTELP-VOX code, a modification general-purpose FOTELP combining Monte Carlo techniques to simulate particle transportation from an external source through internal organs, resulting in 3-D absorbed dose distribution. The study shows comparison results obtained by software and volumetric modulated arc therapy technique. planning technique with two full ar...

ABSTRACT Raw material homogeneity is one of the most requested characteristics in any production industry, and cacao industry no exception. However, there are many factors that affect final quality fruits, among them variety maturity stage. The present study aimed to create color tables for evaluating index ICS06, CCN51 EET8 clones, using digital image processing, order contribute fruits their ...