Direct in-treatment imaging of lung tumors during radiation therapy to ensure proper radiation targeting is an unsolved challenge. We propose to overcome this obstacle using beam's-eye-view (BEV) imaging with a high efficiency imager to automatically localize lung tumors in real-time. The project goal is to design, validate and clinically deploy the new high efficiency imager. We will first determine the specifications necessary for robust BEV imaging. The design of the novel imager to meet this goal will be performed using a new Monte Carlo platform. Scintillator composition, pixelation and stacking of multiple layers will be optimized and the new imager will be validated prior to full scale deployment in a radiation therapy clinic. In addition to the immediate clinical benefits of real-tie lung tumor localization, we anticipate that this project will accelerate advanced applications like tumor tracking, delivered dose accumulation and adaptive radiation therapy. The Monte Carlo platform will also hasten the development of novel imagers for other medical applications beyond this project. Therefore the impact of the project extends far beyond the immediate clinical gain, which is in itself substantial.

Public Health Relevance

It has been demonstrated that lung tumor motion due to respiration can change during the delivery of radiation therapy. Currently, there is no safe method for imaging lung tumors during radiation therapy to ensure proper targeting. We have shown that the current beam's-eye-view imager is insufficient for consistent, accurate lung tumor imaging and we are proposing the design, development and clinical validation of a novel high efficiency imager to overcome this obstacle.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
1R01CA188446-01
Application #
8768186
Study Section
Special Emphasis Panel (ZRG1)
Program Officer
Baker, Houston
Project Start
2014-09-01
Project End
2019-08-31
Budget Start
2014-09-01
Budget End
2015-08-31
Support Year
1
Fiscal Year
2014
Total Cost
Indirect Cost
Name
Dana-Farber Cancer Institute
Department
Type
DUNS #
City
Boston
State
MA
Country
United States
Zip Code
02215
Myronakis, Marios; Hu, Yue-Houng; Fueglistaller, Rony et al. (2018) Multi-layer imager design for mega-voltage spectral imaging. Phys Med Biol 63:105002
Hu, Yue-Houng; Rottmann, Joerg; Fueglistaller, Rony et al. (2018) Leveraging multi-layer imager detector design to improve low-dose performance for megavoltage cone-beam computed tomography. Phys Med Biol 63:035022
Shi, Mengying; Myronakis, Marios; Hu, Yue-Houng et al. (2018) A Monte Carlo study of the impact of phosphor optical properties on EPID imaging performance. Phys Med Biol 63:165013
Hu, Yue-Houng; Fueglistaller, Rony; Myronakis, Marios et al. (2018) Physics considerations in MV-CBCT multi-layer imager design. Phys Med Biol 63:125016
Chen, Haijian; Rottmann, Joerg; Yip, Stephen Sf et al. (2017) Super-resolution imaging in a multiple layer EPID. Biomed Phys Eng Express 3:025004
Hu, Yue-Houng; Myronakis, Marios; Rottmann, Joerg et al. (2017) A novel method for quantification of beam's-eye-view tumor tracking performance. Med Phys 44:5650-5659
Myronakis, Marios; Star-Lack, Josh; Baturin, Paul et al. (2017) A novel multilayer MV imager computational model for component optimization. Med Phys 44:4213-4222
Myronakis, Marios; Fueglistaller, Rony; Rottmann, Joerg et al. (2017) Spectral imaging using clinical megavoltage beams and a novel multi-layer imager. Phys Med Biol 62:9127-9139
Rottmann, Joerg; Morf, Daniel; Fueglistaller, Rony et al. (2016) A novel EPID design for enhanced contrast and detective quantum efficiency. Phys Med Biol 61:6297-306
Star-Lack, Josh; Shedlock, Daniel; Swahn, Dennis et al. (2015) A piecewise-focused high DQE detector for MV imaging. Med Phys 42:5084-99

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