for people ages 18-80 (full criteria)
at UC Davis
study started
estimated completion
Tokihiro Yamamoto, Ph.D.(ucdavis)



The primary objective of this study is to assess the safety and feasibility of personalized radiotherapy with four-dimensional (4D) computed tomography (CT)-based pulmonary ventilation imaging, which selectively avoids irradiating highly-functional lung regions.

Official Title

Novel Lung Functional Imaging for Personalized Radiotherapy


In this clinical trial, the investigators will assess the safety and feasibility of 4D CT ventilation image-guided personalized radiotherapy. The investigators will deliver personalized radiotherapy treatments that selectively avoid irradiating highly-functional lung regions for lung cancer patients, and follow up patients to assess the safety and feasibility. The primary hypothesis to be tested is: 4D CT ventilation image-guided personalized radiotherapy can be delivered safely for lung cancer.


Lung Cancer Radiotherapy Pulmonary Functional Imaging Computed Tomography (CT) Image Registration Functional Image-guided Radiotherapy Ventilation image-guided radiotherapy


You can join if…

Open to people ages 18-80

  • Primary lung cancer or metastatic disease to the lungs to be treated with either conventionally-fractionated radiotherapy (CFRT) or hypo-fractionated stereotactic ablative radiotherapy (SABR).
  • Age restriction and/or gender/ethnic restrictions: Patients must be ≥18 years of age. There are no gender or ethnic restrictions.
  • Concurrent chemotherapy is allowed, but not required.
  • Life expectancy with treatment should be ≥6 months in the estimation of the treating physicians.
  • Zubrod performance status ≤2
  • Adequate marrow and hepatic function defined as Hgb ≥8; platelets ≥100k; ANC≥1500; LFTs ≤2x upper limit of normal and creatinine ≤1.3 or creatinine clearance of ≥50
  • Patient must be able to provide study specific informed consent prior to study entry.

You CAN'T join if...

  • Prior radiotherapy for thoracic cancer or other malignancy leading to any overlap of planned radiotherapy fields.
  • For patients undergoing definitive CFRT, patients with distant metastatic disease are not eligible.
  • For patients undergoing SABR, both early stage primary lung cancer patients and those with limited metastatic disease to the lungs are eligible; however, patients with oligometastatic disease should have a controlled primary and no more than one other involved organ system.
  • Children (<18 years of age), pregnant women, University of California employees or students, or prisoners will be excluded from this study.


  • University of California Davis Medical Center accepting new patients
    Sacramento California 95817 United States

Lead Scientist

  • Tokihiro Yamamoto, Ph.D. (ucdavis)
    Assistant Professor, Radiation Oncology. Authored (or co-authored) 38 research publications


accepting new patients
Start Date
Completion Date
University of California, Davis
Study Type
Last Updated