Abstract
Objectives
To evaluate the clinical outcome of computed tomography (CT)-guided interstitial (IRT) high-dose-rate (HDR) brachytherapy (BRT) in the treatment of unresectable primary and secondary liver malignancies. This report updates and expands our previously described experience with this treatment technique.
Methods
Forty-one patients with 50 tumours adjacent to the liver hilum and bile duct bifurcation were treated in 59 interventions of CT-guided IRT HDR BRT. The tumours were larger than 4 cm with a median volume of 84 cm3 (38–1,348 cm3). The IRT HDR BRT delivered a median total physical dose of 20.0 Gy (7.0–32.0 Gy) in twice daily fractions of median 7.0 Gy (4.0–10.0 Gy) in 19 patients and in once daily fractions of median 8.0 Gy (7.0–14.0 Gy) in 22 patients.
Results
With a median follow-up of 12.4 months, the local control for metastatic hepatic tumours was 89 %, 73 % and 63 % at 6, 12 and 18 months respectively. The local control for primary hepatic tumours was 90 %, 81 % and 50 % at 6, 12 and 18 months respectively. Severe side effects occurred in 5.0 % of interventions with no treatment-related deaths.
Conclusions
CT-guided IRT HDR BRT is a promising procedure for the radiation treatment of centrally located liver malignancies.
Key points
• Interstitial high-dose-rate brachytherapy (IRT HDR BRT) is a promising treatment for central liver tumours
• CT-guided IRT HDR BRT is safe for treating extensive tumours
• CT-guided IRT HDR BRT could play a role in managing unresectable hepatic malignancies
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Abbreviations
- BRT:
-
Brachytherapy
- D90 :
-
Dose delivered to 90 % of the PTV
- EBRT:
-
External beam radiotherapy
- EQD2 :
-
Total biologically equivalent dose in 2 Gy fractions
- HCC:
-
Hepatocellular carcinoma
- HDR:
-
High dose rate
- IRT:
-
Interstitial
- LC:
-
Local control
- LDR:
-
Low dose rate
- LITT:
-
Laser-induced thermotherapy
- MPD:
-
Minimum peripheral dose
- OS:
-
Overall survival
- PD:
-
Progressive disease
- PR:
-
Partial response
- PTV:
-
Planning target volume
- RFA:
-
Radiofrequency ablation
- SD:
-
Stable disease
- TACE:
-
Transarterial chemoembolisation
- V100, V150 and V200 :
-
Percentage of the PTV receiving 100 %, 150 % and 200 % of the prescribed reference dose
- WHO:
-
World Health Organisation
- 3D:
-
Three-dimensional
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Acknowledgments
The authors would like to thank Dr. Nicholas Galanopoulos for his help in editing the manuscript.
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Tselis, N., Chatzikonstantinou, G., Kolotas, C. et al. Computed tomography-guided interstitial high dose rate brachytherapy for centrally located liver tumours: a single institution study. Eur Radiol 23, 2264–2270 (2013). https://doi.org/10.1007/s00330-013-2816-z
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DOI: https://doi.org/10.1007/s00330-013-2816-z