El Mahjoub Chakir

Publications

• Research Article   
  Small Field Dosimetry on Elekta Versa HD Comparative Evaluation of IBA CC01 and CC04 Chambers Against Golden Beam Data
  Author(s): Mohamed Ouali Alami*, El Mehdi Al Ibrahmi, Ouafae Chfik, El Mahjoub Chakir, Khalid El Ouardy, Yassine Herrassi and Yasser Raoui
  
  Accurate small-field dosimetry is essential for precise stereotactic radiotherapy, but it remains challenging due to steep dose gradients and loss of charged-particle equilibrium. This study compares two ionization chambers with different sensitive volumes — the IBA CC01 (0.01 cm³) and CC04 (0.04 cm³) — for small-field measurements on an Elekta Versa HD linear accelerator. Percent depth-dose (PDD) curves, lateral profiles, and relative output factors were measured for 6 MV and 10 MV flattening-filter-free (FFF) photon beams, using field sizes from 1×1 cm² to 5×5 cm² (10×10 cm² as reference). Measurements were taken in water at 90 cm SSD and depths of 1.6, 3, 5, and 10 cm. Results were validated against Elekta’s Golden Beam Data (GBD) using a 2%/2 mm gamma analysis. Both chambers showed excellent agreement with the reference,.. Read More»
  

  Abstract HTML PDF