Aim The aim of the present study is to quantify differences in dose calculations caused by
using CA and determine if the resulting differences are clinically significant. Background The …

Background: The impact of intravenous (IV) contrast media (CM) on radiation dose
calculations must be taken into account in treatment planning. Purpose: The aim of this study …

PURPOSE: To assess the accuracy of the initial CT plan dose–volume histograms (DVH's)
for prostate, rectum and bladder by comparison to delivered doses determined from cone …

daily images to create three-dimensional images that evaluate the exact size, location, and
coordinates of the tumor. This increased precision allows the use of higher doses of …

Objective: Cone beam CT (CBCT) images contain more scatter than a conventional CT
image and therefore provide inaccurate Hounsfield units (HUs). Consequently, CBCT …

BACKGROUND AND PURPOSE: Cone-beam computed tomography (CBCT) increases the
doses on normal tissues. Our study sought to develop a mathematical model that would …

Purpose: To compare the gross target volumes (GTVs)(prostate and seminal vesicles)
defined on noncontrast and contrast-enhanced computed tomography (CT) images used for …

In order to apply highly conformal dose distributions, which are characterized by steep dose
fall-offs, it is necessary to know the exact target location and extension. This study aims at …

Objectives: The aim of this study was to define a method to evaluate the total dose delivered
to the rectum during the whole treatment course in six patients undergoing irradiation for …

Background and Purpose: In radiotherapy for prostate cancer, the rectum is considered the
dose-limiting organ. The incidence of overlap between the sigmoid colon and/or small bowel …