Calculation of planning target volume margins using the van Herk, Stroom and ICRU methods in patients with gastric cancer


Author(s): Agnieszka Namysł-Kaletka, Andrzej Tukiendorf, Jerzy Wydmański

The aim. The aim of this paper was to compare the methods of specifying margins in
patients with gastric cancer.
Material and methods. The material included 57 patients with gastric cancer during
chemoradiotherapy in whom the positioning in the therapeutic system was verified using
2 kV images prior to each radiotherapy fraction. Subsequently, shifts in three axes were
assessed. Based on the shifts obtained, systematic and random errors were calculated
in given axes and margins were specified using the van Herk, Stroom and ICRU 62
Results. The margins resulting from the interfraction motion based of the van Herk,
Stroom and ICRU formulae were as follows: 9 mm, 7 mm and 6 mm in the lateral axis,
16 mm, 14 mm and 11 mm in the craniocaudal axis as well as 8 mm, 7 mm and 5 mm
in the anteroposterior axis, respectively for each formula. The lowest percentage of shifts
that were greater than the calculated margin was observed in the van Herk method (1.5%
in the lateral axis, 3.3% in the craniocaudal axis and 1.9% in the anteroposterior axis).
Conclusions. Based on the material investigated, the margin recommended for centers
in which daily patient position verification is not possible is the one calculated with
the use of the van Herk formula.

Share this article

Awards Nomination

Editors List

  • Prof. Elhadi Miskeen

    Obstetrics and Gynaecology Faculty of Medicine, University of Bisha, Saudi Arabia

  • Ahmed Hussien Alshewered

    University of Basrah College of Medicine, Iraq

  • Sudhakar Tummala

    Department of Electronics and Communication Engineering SRM University – AP, Andhra Pradesh




  • Alphonse Laya

    Supervisor of Biochemistry Lab and PhD. students of Faculty of Science, Department of Chemistry and Department of Chemis


  • Fava Maria Giovanna


Google Scholar citation report
Citations : 208

Onkologia i Radioterapia received 208 citations as per Google Scholar report

Onkologia i Radioterapia peer review process verified at publons
Indexed In
  • Directory of Open Access Journals
  • Scimago
  • MIAR
  • Euro Pub
  • Google Scholar
  • Medical Project Poland
  • Cancer Index
  • Gdansk University of Technology, Ministry Points 20