Structure Detail
Glnd_Thyroid
0.770
Avg Dice
0.840
Median Dice
3.90
Avg HD95 (mm)
6.06
Avg MDC (mm)
Delineation Information
- Modality
- CT
- Guideline
- The guideline used is Brouwer CL, Steenbakkers RJHM, Bourhis J, Budach W, Grau C, Grégoire V, et al. CT-based delineation of organs at risk in the head and neck region: DAHANCA, EORTC, GORTEC, HKNPCSG, NCIC CTG, NCRI, NRG Oncology and TROG consensus guidelines. Radiother Oncol 2015;117:83– 90. https://doi.org/10.1016/j.radonc.2015.07.041. The gland is typically enhancing due to the high iodine content and has two lobes joined by a central isthmus
- Method
- Manual
Anatomical Boundaries
- Cranial
- Slice where the thyroid lobe becomes visible. Typically above the cricoid cartilage level
- Caudal
- Lowermost slice where the lobes are visible. Usually above the thoracic inlet.
- Medial
- Outer contour of the thyroid gland
- Lateral
- Outer contour of the thyroid gland
- Ventral
- Outer contour of the thyroid gland
- Dorsal
- Outer contour of the thyroid gland
Additional Metrics
| Average MSD | — |
| Median MSD | — |
| Median HD95 | 2.10 |
| Median MDC | 3.68 |
| Avg Undercontouring MDC | 3.80 |
| Avg Overcontouring MDC | 2.27 |
| Average Volume | 4.58 |