title: Dosimetric evaluation of intensity modulated radiotherapy and 4-field 3-d conformal radiotherapy in prostate cancer treatment.
abstract: OBJECTIVE
  The purpose of this dosimetric study is the targeted dose homogeneity and critical organ dose comparison of 7-field Intensity Modulated Radiotherapy (IMRT) and 3-D 4-field conformal radiotherapy.
  
  
  METHODS
  Cross sectional study.
  
  
  METHODS
  Twenty patients with low and moderate risk prostate cancer treated at Gülhane Military Medical School Radiation Oncology Department between January 2009 and December 2009 are included in this study. Two seperate dosimetric plans both for 7-field IMRT and 3D-CRT have been generated for each patient to comparatively evaluate the dosimetric status of both techniques and all the patients received 7-field IMRT.
  
  
  RESULTS
  Dose-comparative evaluation of two techniques revealed the superiority of IMRT technique with statistically significantly lower femoral head doses along with reduced critical organ dose-volume parameters of bladder V60 (the volume receiving 60 Gy) and rectal V40 (the volume receiving 40 Gy) and V60.
  
  
  CONCLUSIONS
  It can be concluded that IMRT is an effective definitive management tool for prostate cancer with improved critical organ sparing and excellent dose homogenization in target organs of prostate and seminal vesicles.
authors.affiliation: Department of Radiation Oncology, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: Bora
authors.initials: B
authors.lastname: Uysal
authors.affiliation: Department of Radiation Oncology, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Beyzadeoğlu
authors.affiliation: Department of Radiation Oncology, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: Omer
authors.initials: O
authors.lastname: Sager
authors.affiliation: Department of Radiation Oncology, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: Ferrat
authors.initials: F
authors.lastname: Dinçoğlan
authors.affiliation: Department of Radiation Oncology, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: Selçuk
authors.initials: S
authors.lastname: Demiral
authors.affiliation: Department of Radiation Oncology, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: Hakan
authors.initials: H
authors.lastname: Gamsız
authors.affiliation: Department of Radiation Oncology, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: Serdar
authors.initials: S
authors.lastname: Sürenkök
authors.affiliation: Department of Radiation Oncology, Gülhane Military Medical Academy, Ankara, Turkey.
authors.forename: Kaan
authors.initials: K
authors.lastname: Oysul
keywords: Intensity-modulated radiotherapy; prostate cancer; three-dimensional conformal radiotherapy