Aim: To do a dosimetric comparison between VMAT (Volumetric modulated arc radiotherapy) and 3DCRT (3-dimensional conformal radiotherapy) plans in pediatric abdominal neuroblastoma. Methods: 15 patients with high risk abdominal neuroblastoma, treated between January 2012 and December 2015, with 3DCRT were reviewed. For comparison purpose, VMAT plans were also made on the planning CT scans. Volum...

OBJECTIVE Passive scattering proton beam (PSPB) radiotherapy for accelerated partial-breast irradiation (APBI) provides superior dosimetry for APBI three-dimensional conformal photon radiotherapy (3DCRT). Here we examine the potential incremental benefit of intensity-modulated proton radiotherapy (IMPT) for APBI and compare its dosimetry with PSPB and 3DCRT. METHODS Two theoretical IMPT plans...

background: to analyze the dosimetric and radio biologic advantages between intensity modulated radiotherapy (imrt) and 3 dimensional conformal radiotherapy (3dcrt) and selection of optimal photon energy for imrt treatments. material and methods: 24 patients with localized prostate carcinoma were planned for 3dcrt and imrt techniques. radiation dose of 54 gy with 2 gy/fraction, was planned to p...

Purpose: To compare target coverage and organ at risk (OAR) sparing in the supine and prone positions with 3-dimensional conformal radiotherapy (3DCRT), intensity-modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) in lowand high-risk prostate radiotherapy cases. Materials and Methods: Using magnetic resonance images of five healthy volunteers, six treatment plans (supine ...

BACKGROUND The purpose of this study is to report our clinical outcomes using intensity-modulated radiation therapy (IMRT) for adjuvant treatment of cervical cancer, compared with three-dimensional conformal radiation therapy (3DCRT), in terms of tumor control, complications and dose-volume histogram (DVH) parameters. METHODS Between March 2008 and February 2014, 62 patients were treated with...

Aim: To assess whether intensity modulated radiotherapy (IMRT) offers any advantages compared to three-dimensional conformal radiotherapy (3DCRT) when treating the ilio-inguinal lymph-node basin after therapeutic lymphadenectomy for melanoma. Method: 15 consecutive patients receiving adjuvant radiotherapy (48 Gy in 20 fractions) were selected for the study. Simulation, volume generation and goa...

PURPOSE Radiation therapy (RT) is delivered as adjuvant and salvage therapy after radical prostatectomy for prostate cancer. Interest in dose escalation in this setting may necessitate more advanced RT techniques, such as intensity modulation. This study was designed to compare intensity-modulated radiation therapy (IMRT) versus 3-dimensional conformal radiation therapy (3DCRT) planning. METH...

During radiotherapy for gastric lymphoma, it is difficult to protect the liver and kidneys in cases where there is considerable overlap between these organs and the target volume. This study was conducted to compare the three radiotherapy planning techniques of four-fields 3D conformal radiotherapy (3DCRT), half-field radiotherapy (the half-beam method) and intensity-modulated radiotherapy (IMR...

Journal of Medical Physics ¦ Volume 42 ¦ Issue 2 ¦ April-June 2017 100 We highly appreciate your comments. It is well known that there are considerable target position uncertainties during breast radiotherapy. These uncertainties result from respiratory motions, tissue and organ deformation, daily patient setup, and other causes. Respiratory gating and breath control can reduce the target posit...

Objective: To compare the 4-field 3D conformal radiotherapy technique (3DCRT) to intensity-modulated (IMRT) 9-field for adjuvant post radical cystectomy in high-risk urothelial bladder cancer cases. Patients and Methods: A dosimetric analysis of 11 patients who underwent was performed. These were presented department, National Cancer Institute, Cairo, between 2018 2020 with using IMRT technique...