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Clinical Trial Record

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Feasibility of Using Real-time Cine-MRI for Treating Moving & Deforming Tumors

2009-02

2010-09

2010-09

5

Study Overview

Feasibility of Using Real-time Cine-MRI for Treating Moving & Deforming Tumors

This study aims to investigate and optimize imaging sequences and parameters of rapid real-time MRI in order to obtain adequate guidance for accurately and precisely delivering radiation to moving abdominal and thoracic tumors.

Accurate dose delivery remains one of the weakest aspects of radiotherapy, especially in the case of thoracic and abdominal tumors, where significant patient motion occurs during dose delivery (intrafraction motion). Such motion results in geometric and dosimetric uncertainties that compromise treatment quality. Effective management of intrafraction motion is therefore key to realizing the full potential of modern image-guided radiation therapy (IGRT). While external markers have been found to be well-correlated with internal anatomy within an imaging session, there is no guarantee that these correlations will continue to exist and be constant throughout the course of the therapy. In general, implanted, radio-opaque seeds have been found to be more reliable than external markers. However, implantation of fiducials, whether radio-opaque or electromagnetic, is necessarily invasive and carries with it the risk of associated complications - an issue that becomes especially important for cancer patients with weakened immune systems. Currently, MR imaging is the only modality that is non-invasive and provides high quality volumetric information for the whole body. The "ideal" intrafraction motion management requires complete spatio-temporal knowledge of the irradiated anatomy. However, to date, there is no clinical method of directly visualizing the tumor volume during dose delivery. Most techniques rely on external or internal surrogate markers which often provide (usually non-volumetric) information of limited accuracy and reliability. In addition, internal markers impose significant Ȭosts" on the patient in terms of interventional complications and increased imaging dose. In this work, we investigate the feasibility of using in-room, fast cine MR imaging as a non-invasive means to provide real-time, soft-tissue-based, volumetric image guidance for continuous monitoring of the target and surrounding anatomy. To date, there has been no systematic investigation of the imaging requirements of an integrated MRI+linac for the specific task of real-time radiotherapy guidance.

  • Pancreatic Cancer
  • Liver Cancer
  • Lung Cancer
  • Lung Cancer Non-Small Cell Cancer (NSCLC)
  • Lung Cancer Small Cell Lung Cancer (SCLC)
  • Hepatobiliary Cancers
  • Hepatobiliary Cancers Liver
  • Hepatobiliary Cancers Hepatocellular Carcinoma (Hepatoma)
  • Hepatobiliary Cancers Gallbladder
  • Hepatobiliary Cancers Bile Duct
  • PROCEDURE: MR Imaging
  • VAR0042
  • SU-06112009-2702 (OTHER Identifier) (OTHER: Stanford University)

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates Results Reporting Dates Study Record Updates

2009-12-16  

N/A  

2012-12-05  

2010-02-18  

N/A  

2012-12-07  

2010-02-19  

N/A  

2012-12  

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

Design Details

Primary Purpose:
N/A

Allocation:
N/A

Interventional Model:
N/A

Masking:
N/A

Arms and Interventions

Participant Group/ArmIntervention/Treatment
Primary Outcome MeasuresMeasure DescriptionTime Frame
investigate and optimize imaging sequences and parameters of rapid real-time MRI in order to obtain adequate guidance for accurately and precisely delivering radiation to moving abdominal and thoracic tumors.two hours
Secondary Outcome MeasuresMeasure DescriptionTime Frame

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person’s general health condition or prior treatments.

Ages Eligible for Study:
ALL

Sexes Eligible for Study:
18 Years

Accepts Healthy Volunteers:

    Inclusion Criteria:3.1.1. Eligible disease(s)/stage(s) AJCC Stage I, II, III or IV lung, liver or pancreatic cancer of any histology to be treated using radiotherapy will be eligible for this study.
    3.1.2. Allowable type and amount of prior therapy  Any types and amounts of prior therapy will be allowed for this study.
    3.1.3. Age restriction and/or gender/ethnic restrictions Patients must be greater than or equal to 18 years of age. There are no gender or ethnic restrictions.
    3.1.4. Life expectancy restrictions  None.
    3.1.5. ECOG or Karnofsky Performance Status  Karnofsky performance status of 50 or greater
    3.1.6. Requirements for organ and marrow function  None.
    3.1.7. Ability to understand and the willingness to sign a written informed consent document.
    3.1.8. Pain-free in supine position Exclusion Criteria:3.2.1 Children (age <18)
    3.2.2 Metallic implants, embedded metallic objects, implanted biomedical devices e.g., cardiac pacemakers
    3.2.3 Women who are pregnant or trying to get pregnant
    3.2.4 Pain in supine position
    3.2.5 Karnofsky performance status < 50

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

  • The American Association of Physicists in Medicine
  • PRINCIPAL_INVESTIGATOR: Amit Sawant, Stanford University

Publications

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

No publications available

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