D90D4
| Pos | Category | Selected Element & Definition |
|---|---|---|
| D | Section |
Radiation Therapy
|
| 9 | Body System |
Ear, Nose, Mouth and Throat
|
| 0 | Modality |
Beam Radiation
|
| D | Treatment Site |
Nasopharynx
|
| 4 | Modality Qualifier |
Heavy Particles (Protons,Ions)
|