- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT02331381
Imaging and Plan Workflow in a Novel Low-Field Magnetic Resonance Imaging (MRI) Radiotherapy Device
A Pilot Study of Imaging and Plan Workflow in a Novel Low-Field Magnetic Resonance Imaging (MRI) Radiotherapy Device
Studieoversikt
Status
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
Recently, Viewray Inc (Cleveland, OH) has released the RenaissanceTM System 1000, which consists of the combination of an open, split solenoid 0.35 T MRI scanner that is equipped for parallel imaging with a 60Co gamma-ray radiation treatment unit. The MRI scanner is required to be a low field unit to allow for imaging with spatial integrity by limiting magnetic susceptibility artifacts due to the patient and to prevent significant perturbations of the dose distribution. The 0.35 T magnet is a variant of the Siemens MAGNETOM product used for intraoperative imaging.
A previous study of pilot imaging using this device without the 60Co sources was completed in 2012 (HRPO# 201105295). In this study, a total of 26 patients were imaged with the device. Fourteen of these patients also had onboard CT imaging (OB-CT) where the two sets of imaging and relative organs at risk (OARs) could be compared. Fifteen to 24 OARs were evaluated per anatomical site. In total, 221 OARs and 10 target structures were compared for visualization on MRI and OB-CT image sets by each physician. At least 2/3 physicians evaluated MRI as offering better visualization for 71% of structures, OB-CT offering better visualization for 10% of structures, and both offering equivalent visualization for 14% of structures. Physicians agreed unanimously for 74% and in majority for >99% of structures evaluated, respectively. For <1% of structures, no consensus was reached. Targets were better visualized on MRI in 4/10 cases, and were never better visualized on OB-CT images.
There were limitations to this prior study. The patients were not imaged in immobilization devices that are commonly used in radiation therapy. This precluded the creation of a mock radiation therapy plan using the device for these patients. Also, the device was not evaluated in the context of radiation therapy decision making, such as patient shifts, target localization and patient repositioning.
The purpose of this study is to evaluate the imaging and plan workflow for radiation therapy utilizing this novel device. For this protocol, only the MRI scanner of the machine will be utilized. The 60Co portion of the machine capable of radiation treatment administration will not be utilized, and there will be no experimental treatments or modifications to each patient's standard of care radiation treatment plan.
Studietype
Registrering (Faktiske)
Fase
- Fase 1
Kontakter og plasseringer
Studiesteder
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Missouri
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St. Louis, Missouri, Forente stater, 63110
- Washington University School of Medicine
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Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Eligibility Criteria:
- Scheduled to receive radiation therapy.
- At least 18 years of age.
- Does not meet any standard contraindications for MRI (such as being claustrophobic, having metal objects within the body that cannot be removed or having large tattoos), confirmed by completion of our clinical MRI questionnaire form
- Able to understand and willing to sign an IRB approved written informed consent document.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Diagnostisk
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
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Eksperimentell: MRI
Participants will have a custom immobilization device created for them for the purpose of the study.
They will be scanned from one to four occasions during radiation treatment.
If enrolled in the study prior to the first radiation treatment, the first imaging scan may be scheduled prior to the first radiation treatment, with subsequent scans during treatment separated by at least one day.
Patients will be in the scanner for approximately 30 minutes to one hour, either prior to or following their standard of care radiotherapy treatment.
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Andre navn:
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
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Adequacy of the radiation therapy plan
Tidsramme: Duration of radiation therapy
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The radiation plan will be evaluated based on the recorded clinical goals prescribed by the attending physician.
Plans will be classified as 'adequate' if they meet the prescribed goals for the clinical radiation therapy plan.
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Duration of radiation therapy
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Feasibility of patient localization workflow
Tidsramme: Duration of radiation therapy
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The localization time will be classified as 'adequate' if it is less than or equal to 15 minutes.
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Duration of radiation therapy
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Samarbeidspartnere og etterforskere
Etterforskere
- Hovedetterforsker: Jeff Michalski, M.D., Washington University School of Medicine
Publikasjoner og nyttige lenker
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Faktiske)
Studiet fullført (Faktiske)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- 201311081
Plan for individuelle deltakerdata (IPD)
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Legemiddel- og utstyrsinformasjon, studiedokumenter
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