Omar A Zeidan
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Explore the profile of Omar A Zeidan including associated specialties, affiliations and a list of published articles.
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20
Citations
314
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Recent Articles
11.
Kupelian P, Langen K, Willoughby T, Zeidan O, Meeks S
Semin Radiat Oncol
. 2007 Dec;
18(1):58-66.
PMID: 18082589
Prostate motion during external-beam radiotherapy can affect outcomes in patients with localized prostate cancer. Prostate motion and deformation are currently being characterized with different techniques. There is significant individual variation...
12.
Kupelian P, Lee C, Langen K, Zeidan O, Manon R, Willoughby T, et al.
Int J Radiat Oncol Biol Phys
. 2007 Sep;
70(4):1151-7.
PMID: 17892920
Purpose: To compare different image-guidance strategies in the alignment of prostate cancer patients. Using data from patients treated using daily image guidance, the remaining setup errors for several different strategies...
13.
Zeidan O, Langen K, Meeks S, Manon R, Wagner T, Willoughby T, et al.
Int J Radiat Oncol Biol Phys
. 2007 Jan;
67(3):670-7.
PMID: 17197123
Purpose: The aim of this study was to assess the residual setup error of different image-guidance (IG) protocols in the alignment of patients with head and neck cancer. The protocols...
14.
Zeidan O, Stephenson S, Meeks S, Wagner T, Willoughby T, Kupelian P, et al.
Med Phys
. 2006 Dec;
33(11):4064-72.
PMID: 17153386
We present an evaluation of a new and improved radiochromic film, type EBT, for its implementation to IMRT dose verification. Using a characterized flat bed color CCD scanner, the film's...
15.
Kupelian P, Langen K, Zeidan O, Meeks S, Willoughby T, Wagner T, et al.
Int J Radiat Oncol Biol Phys
. 2006 Oct;
66(3):876-82.
PMID: 17011460
Purpose: The aim of this work was to study the variations in delivered doses to the prostate, rectum, and bladder during a full course of image-guided external beam radiotherapy. Methods...
16.
Kupelian P, Langen K, Willoughby T, Wagner T, Zeidan O, Meeks S
Int J Radiat Oncol Biol Phys
. 2006 Sep;
66(2):593-6.
PMID: 16966001
Purpose: The aim of this study was to evaluate the extent of the variation in the position of the prostate bed with respect to the bony anatomy. Methods And Materials:...
17.
Willoughby T, Forbes A, Buchholz D, Langen K, Wagner T, Zeidan O, et al.
Int J Radiat Oncol Biol Phys
. 2006 Aug;
66(2):568-75.
PMID: 16887290
Purpose: To report on the initial clinical use of a commercially available system to deliver gated treatment using implanted fiducials, in-room kV X-rays, and an infrared camera tracking system. Methods...
18.
Zeidan O, Li J, Low D, Dempsey J
Med Phys
. 2004 Nov;
31(10):2730-7.
PMID: 15543777
In this study, we compared the dosimetric properties of four of the most commonly used films for megavoltage photon-beam dosimetry when irradiated under identical conditions by small multileaf-collimator (MLC) defined...
19.
Stell A, Li J, Zeidan O, Dempsey J
Med Phys
. 2004 Jul;
31(6):1593-602.
PMID: 15259664
We present a study to evaluate the monitor unit (MU), dosimetric, and leaf-motion errors found in the delivery of 91 step-and-shoot IMRT treatment plans performed at three nominal dose rates...
20.
Zeidan O, Li J, Ranade M, Stell A, Dempsey J
Med Phys
. 2004 Apr;
31(3):463-76.
PMID: 15070242
We present an investigation into the use of a fast video-based electronic portal-imaging device (EPID) to study intensity modulated radiation therapy (IMRT) delivery. The aim of this study is to...