Research Masterclass in Radiotherapy Physics 2017

The dose conformation potential: Carbon ion RT of skull base chordomas

Page 7 Excellent sparing of normal tissue and highly effective RT Oliver Jäkel Medical Physics

The meaning of high LET

  

  

2



2

W m c e max  2

Max. energy of secondary electrons:

2

1





Secondary electrons / deposition patterns

Ions

Photons ࡱഥ ࢋ ష ൎ MeV

Repair   (p21)

ࡱഥ ࢋ ష ൎ (k)eV

M. Scholz et al.,  Rad. Res., 2001 

20 40 60 80 100

10

‚Sea of Electrons‘

Micro‐ dosimetry

5

Rahmanian et al.,  PMB 62, 2017

Prozentuale Häufigkeit 0

Prozentuale Häufigkeit 0

Zelldosis / Gy 0 1 2 3 4 Cell dose / Gy

Relative Frequency

0 1 2 3 4

Cell dose / Gy

Zelldosis / Gy