- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT02852473
Impact of Continuous Positive Airway Pressure on Breathing Motion Amplitude
This study involves a breathing motion assessment in healthy subjects before and after continuous positive airway pressure (CPAP) administration using MRI images.
The hypothesis for this study is that CPAP administration will significantly reduce breathing motion. This may help cancer patients who are undergoing proton radiotherapy, so they possibly will not have to hold their breath during the procedure.
Studieoversikt
Detaljert beskrivelse
Studietype
Registrering (Faktiske)
Fase
- Tidlig fase 1
Kontakter og plasseringer
Studiesteder
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Minnesota
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Rochester, Minnesota, Forente stater, 55905
- Mayo Clinic in Rochester
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Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- Healthy adult female and males
- Subject meets routine MRI safety criteria
Exclusion Criteria:
- Age <18
- Known history of chronic obstructive pulmonary disease (COPD), asthma, or other chronic pulmonary illness
- Pregnancy
- Any safety risk identified via MRI safety screening
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Grunnvitenskap
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
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Eksperimentell: Continuous Positive Airway Pressure
Continuous Positive Airway Pressure (CPAP) will be administered using FDA-approved equipment.
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CPAP requires subjects to wear a plastic pressurized mask/apparatus, which is connected via a filter and hose to a pump capable of supplying variable pressure (typically on the range of 4-20 cm H2O).
The investigators plan to use a full-face mask to prevent subjects from reducing pressure by opening their mouths.
If this cannot be tolerated or properly fitted, or is not compatible with the CPAP ventilator, subjects would use a nasal mask only and be asked to keep their mouths closed.
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
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Change in Breathing Motion Characteristics at High CPAP Setting
Tidsramme: Data acquisition for this portion of the study will require approximately 30 minutes.
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Breathing motion at baseline and at initial (higher but tolerable) CPAP settings will be characterized using fast multi-slice, multi-phase 2D gradient-echo or spin-echo MRI sequences in the sagittal or coronal imaging planes over a large field of view covering the thoracic and upper-abdominal region.
Specifically "4D-MRI" (or time-resolved MRI) will be generated from retrospective sorting of multi-slice 2D MRI.
For these analyses, anatomic reference points (e.g., bright vessels) in multiple organ systems will be identified on the images, contoured or segmented; subsequently 3D motion patterns will be extracted for all anatomical references/features.
Numerical simulations will be performed to determine hypothetical radiation target volume changes (cm^3) at these anatomic locations assuming spherical tumors with a given set of tumor diameters (cm).
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Data acquisition for this portion of the study will require approximately 30 minutes.
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Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
Change in Breathing Motion Characteristics at Lower CPAP Setting
Tidsramme: Approximately 45 minutes into visit.
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Time permitting, the CPAP setting will be reduced to approximately half of the nominal/tolerable/high CPAP setting.
Using the same MRI sequences and retrospective sorting technique, 4D-MRI will be generated for this lower CPAP setting.
Analogous motion characterization analyses (to outcome measure 1) will be carried out for the lower CPAP setting (relative to baseline 4D-MRI).
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Approximately 45 minutes into visit.
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Samarbeidspartnere og etterforskere
Sponsor
Etterforskere
- Hovedetterforsker: Erik J Tryggestad, PhD, Mayo Clinic
Studierekorddatoer
Studer hoveddatoer
Studiestart
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 (Anslag)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Andre studie-ID-numre
- 16-001685
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .
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