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RecruitingNCT06925295(XeRTLC)Updated Jan 2, 2026

Using Xe MRI to Guide Radiation Therapy for Lung Cancer

A Phase 2 interventional study of Xenon MRI and Pulmonary Function Testing in Imaging Techniques, sponsored by Sean Fain. Recruiting at 1 site in United States. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-01-02.

Sponsored by Sean Fain · Phase 2, Interventional, and Diagnostic

From the registry’s dates

  • Started Aug 2025; still recruiting 1 year 1 month later.
Phase
Phase 2
Study type
Interventional
Enrollment
15
Allocation
Non-randomized
Ages
18 Years to 80 Years
Sex
All
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Study summary

The purpose of this research study is to explore using MRI scans with xenon to better image lung function, how lung function changes after radiation therapy, and to guide radiation therapy away from parts of the lung that have good function. This project is foundational to performing additional studies to establish if novel MRI imaging can serve as a guidance tool for lung cancer radiation treatment.

Read the detailed description

Despite the recent implementation of daily adaptation of image-guided radiation treatment using highly precise beam delivery technologies, significant acute and chronic lung toxicity is still reported in approximately 20% of lung cancer patients undergoing radiation therapy. Furthermore, subclinical loss of lung function is a concern for long term outcomes and quality of life. The purpose of this pilot study is to develop, implement and evaluate the efficacy of a new radiation therapy (RT) treatment planning paradigm that incorporates regional pulmonary functional imaging information to reduce radiation dose to healthy lung tissues.

The central hypothesis is that functional lung magnetic resonance imaging (MRI) using hyperpolarized xenon (Xe) will provide the means to visualize and quantify acute ventilation and gas exchange alterations during a standard course of RT treatment, and that modifying radiation treatment plans based on the combination of functional and anatomical MRI will result in improved outcomes for lung cancer patients in the short and long term. The rationale for the proposed research is that the implementation of functional imaging context into RT treatment planning is currently inhibited by a lack of access to routine MRI-guidance and a robust workflow to practically incorporate functional information into clinical treatment planning.

The study has the following Specific Aims: 1) Develop automated software tools to integrate functional Xe MRI into RT treatment planning software and establish a comprehensive clinical workflow to reduce radiation dose in highly-functioning regions of the lung, 2) Monitor the acute and chronic effects of RT on lung ventilation and gas exchange using Xe MRI and identify early functional imaging biomarkers of radiation induced lung injury, and 3) Compare outcomes and the post-treatment trajectory of pulmonary functional measurements between functional MRI-guided and standard RT cohorts to assess the potential efficacy of Xe MRI guided adaptive RT. The overall scientific objective is to develop a comprehensive workflow that enables functional lung sparing and monitoring of acute and chronic (6 months post RT) pulmonary functional injury in lung cancer patients.

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Conditions studied

  • Imaging Techniques

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Keywords

  • Lung cancer
  • Xenon
  • Imaging
03

In context

Lung Neoplasms

7,243 studies on the registry are indexed under Lung Neoplasms; 1,558 are open to participants now.

This study's planned enrollment of 15 is below the median of 60 across 5,296 interventional studies indexed under Lung Neoplasms.

Browse Lung Neoplasms studies →

Lead sponsor

Sean Fain is the lead sponsor of 2 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Subjects must meet all of the following inclusion criteria to be eligible for enrollment into the trial

  1. Aged 18-80 years
  2. Willing and able to provide informed consent and adhere to visit/protocol schedules (Consent must be given before any study procedures are performed.)
  3. Clinical diagnosis of lung cancer made by a board-certified oncologist with intent to treat with stereotactic body radiation therapy. We will not exclude individuals based on cancer type or severity of disease with the exception of the below criteria

Exclusion criteria

Exclusion Criteria:

Subjects presenting with any of the following will not be included in the trial:

  1. Subject is less than 18 years old or incarcerated
  2. MRI is contraindicated based on responses to MRI screening questionnaire
  3. Subject is pregnant or lactating
  4. Resting oxygen saturation \<90% on supplemental oxygen
  5. Respiratory illness of bacterial or viral etiology within 30 days of planned treatment
  6. Subject has history of any known ventricular cardiac arrhythmia
  7. Subject has history of cardiac arrest within the last year
  8. Subject has prior history of cancer treatment with radiation therapy to the lung
  9. Subject has concurrent cancer treatment with agents associated with increased risk of radiation pneumonitis (e.g. immunotherapy, chemotherapy)
  10. Subject does not fit into 129Xe vest coil used for MRI
  11. Subject cannot hold his/her breath for 15 seconds
  12. Subject deemed unlikely to be able to comply with instructions during imaging
  13. Medical or psychological conditions which, in the opinion of the investigator, might create undue risk to the subject or interfere with the subject's ability to comply with the protocol requirements
05

Study design

Phase
Phase 2
Primary purpose
Diagnostic
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
15 participants (estimated)

Study arms

  • Experimental
    Technical Development Arm

    Lung cancer patients who will undergo standard-of-care stereotactic body radiation therapy (SBRT).

    Drug: Xenon MRI · Diagnostic Test: Pulmonary Function Testing · Other: Quality of Life Questionnaire · Other: Medical Research Council Dyspnea score · Other: St. George's Respiratory Questionnaire · Diagnostic Test: Blood Biomarkers

  • Experimental
    Implementation Arm

    Lung cancer patients who will undergo SBRT plans that were functionally adapted to avoid highly functioning lung based on Xe MRI.

    Drug: Xenon MRI · Diagnostic Test: Pulmonary Function Testing · Other: Quality of Life Questionnaire · Other: Medical Research Council Dyspnea score · Other: St. George's Respiratory Questionnaire · Diagnostic Test: Blood Biomarkers

Interventions

  • DrugXenon MRI

    MRI with Xenon used for contrast

  • Diagnostic testPulmonary Function Testing

    Pulmonary function testing will include spirometry, lung volumes, DLCO and oscillometry

  • OtherQuality of Life Questionnaire

    European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30+QLQ-LC29)

  • OtherMedical Research Council Dyspnea score

    modified Medical Research Council Dyspnea score (mMRC Dyspnea)

  • OtherSt. George's Respiratory Questionnaire

    St. George's Respiratory Questionnaire (SGRQ)

  • Diagnostic testBlood Biomarkers

    blood biomarkers of inflammation and injury (e.g. Angiopoetin-2, Interleukin-6, myofibroblast activity, BPD4)

06

What researchers measure

Primary outcomes

  1. The incidence of PFT evidence of radiation pneumonitis and lung function change on spirometry

    is the incidence of PFT evidence of radiation pneumonitis and lung function change. Change in spirometry will be reported as the mean±SD of these measurements for each treatment study visit, and the mean difference of these measurements from baseline.

    Time frame: Baseline Visit, periprocedural, 1 month follow up visit, and 6 month follow up visit..

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Study locations

1 of 1 sites recruiting
  • University of Iowa
    Iowa City, Iowa 52242, United States
    Recruiting
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 2, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06925295
Lead sponsor
Sean Fain
Responsible party
Sean Fain (Professor, University of Iowa) — Sponsor-investigator
First posted
Apr 13, 2025
Start date
Aug 30, 2025
Primary completion
Jan 2027 (estimated)
Completion
Jan 2027 (estimated)
Last update
Jan 2, 2026

Study contacts

Eric Bruening
Contact
eric-bruening@uiowa.edu
319-789-0806 ext. 319 678 238
Sean Fain, PhD
principal investigator · University of Iowa

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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