a Record control number 000329334500007

a ISSN 1306-133X

a Original cataloging agency NEU GrandLibrary

a Language code of text/sound track or separate title eng

a Classification number QZ200

b Item number .D48 2013

a Personal name Yazici, Gozde.

h Medium Electronic Document

a Title Determination of the Planning Target Volume Margin by the Use of kv Portal Imaging and kvCone Beam Computerized Tomography

c Statement of responsibility, etc Gözde Yazıcı, Mete Yeginer, Meltem Atamel, Pervin Hurmuz, Melis Gultekin, Mustafa Cengiz, Ferah Yıldız, Gökhan Özyiğit,

b Name of publisher, distributor, etc Akad Doktorlar Yayınevı,

c Date of publication, distribution, etc 2013.

a Summary, etc With portal imaging devices we can easily determine the position of bones in the patient, but we cannot visualize soft tissues. Kilo voltage cone beam computed tomography (CBCT) imaging integrated to treatment machine is relatively a new technique and provides higher resolution of soft tissues for imaging. In this study, our aim was to measure the differences between 2D-2D and 3D-3D registration based set-ups. We investigated whether using kV cone beam CT reduced setup errors compared to kV portal imaging. Four patients with the diagnosis of head and neck cancer (2 patients with cancer in the base of tongue, 2 with hypopharyngeal cancer) and 6 patients with prostate cancer were included in our study. The treatments were delivered with IMRT. kvCBCT-kv film comparisions were evaluated in 44 sets of data for head and neck cancer patients, and in 130 sets of data for prostate cancer patients. We analyzed the necessary planning target volume (PTV) margins for each group when only kv portal imaging is performed every day and found that a margin of 2.1 and 1.5 mm in all directions would be sufficient in case of pelvic tumors and head and neck cancers respectively if the lw portal images are performed every day. Compared to the literature the shifts were minimal when kvCBCT was performed after lw portal imaging. The immobilization procedures, followed strictly, may be reason for this observation.

a Topical term or geographic name as entry element Near East University Article

a Topical term or geographic name as entry element Yakın Doğu Üniversitesi Makale

a Topical term or geographic name as entry element Oncology

a Topical term or geographic name as entry element Planning target volume margin

a Topical term or geographic name as entry element Cone-Beam Computed Tomography

a Topical term or geographic name as entry element Prostate-cancer;

g Relationship information 2013, Volume: 23, Issue: 4, Pages: 254-259

t Title Uhod-Uluslararası Hematolojı-Onkolojı Dergısı

x International Standard Serial Number 1306133X

u Uniform Resource Identifier http://library.neu.edu.tr:2048/login?url=http://dx.doi.org/10.4999/uhod.13052