1
|
Sosa Iglesias V, van Hoof SJ, Vaniqui A, Schyns LE, Lieuwes N, Yaromina A, Spiegelberg L, Groot AJ, Verhaegen F, Theys J, Dubois L, Vooijs M. An orthotopic non-small cell lung cancer model for image-guided small animal radiotherapy platforms. Br J Radiol 2018; 92:20180476. [PMID: 30465693 DOI: 10.1259/bjr.20180476] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
METHODS: An orthotopic non-small cell lung cancer model in NMRI-nude mice was established to investigate the complementary information acquired from 80 kVp microcone-beam CT (micro-CBCT) and bioluminescence imaging (BLI) using different angles and filter settings. Different micro-CBCT-based radiation-delivery plans were evaluated based on their dose-volume histogram metrics of tumor and organs at risk to select the optimal treatment plan. RESULTS: H1299 cell suspensions injected directly into the lung render exponentially growing single tumor nodules whose CBCT-based volume quantification strongly correlated with BLI-integrated intensity. Parallel-opposed single angle beam plans through a single lung are preferred for smaller tumors, whereas for larger tumors, plans that spread the radiation dose across healthy tissues are favored. CONCLUSIONS: Closely mimicking a clinical setting for lung cancer with highly advanced preclinical radiation treatment planning is possible in mice developing orthotopic lung tumors. ADVANCES IN KNOWLEDGE: BLI and CBCT imaging of orthotopic lung tumors provide complementary information in a temporal manner. The optimal radiotherapy plan is tumor volume-dependent.
Collapse
Affiliation(s)
- Venus Sosa Iglesias
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | | | - Ana Vaniqui
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Lotte Ejr Schyns
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Natasja Lieuwes
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Ala Yaromina
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Linda Spiegelberg
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Arjan J Groot
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Frank Verhaegen
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Jan Theys
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Ludwig Dubois
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Marc Vooijs
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| |
Collapse
|