Magnetic Resonance Flow Measurements of Mesenteric Arteries and Veins and Portal Vein
8. mars 2021 oppdatert av: Trialbureau radiology, Erasmus Medical Center
Magnetic Resonance Flow Measurements of Mesenteric Arteries and Veins and Portal Vein With Food Stimulation in Patients Suspected of Chronic Gastro-intestinal Ischemia
To determine the difference in baseline MR flow measurements and post-prandial MR flow measurements between patients diagnosed with CGI and patients not diagnosed with CGI.
Studieoversikt
Detaljert beskrivelse
The diagnosis of chronic gastro-intestinal ischemia (CGI) remains a clinical challenge because this diagnosis is difficult to distinguish by the frequent incidence of chronic abdominal pain and asymptomatic stenosis of the mesenteric arteries1.
The standard diagnostic work up includes medical history, anamnesis and physical examination, radiological imaging and a functional test as visible light spectroscopy (VLS)2-4 or tonometry5-7.
A multidisciplinary team consisting of a gastroenterologist, a vascular surgeon and an interventional radiologist, all specialized in CGI, discusses all patients which results in an expert based consensus diagnosis.
Currently, there is no specific test to diagnose CGI.
In literature, Magnetic Resonance (MR) techniques are described by which the flow in the mesenteric vessels is measured pre- and post-prandial in healthy volunteers and CGI patients8-12.
The flow in the mesenteric vessels increases post-prandial (hyperemia).
However, this increase in post-prandial flow compared to pre-prandial appeared less in CGI patients compared to the healthy volunteers.
In some CGI patients, even a decrease of the post-prandial compared to pre-prandial flow was seen.
We might be able to distinguish patients with CGI from patients without CGI with MR flow measurements with food stimulation.
Studietype
Intervensjonell
Registrering (Forventet)
62
Fase
- Ikke aktuelt
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
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Zuid Holland
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Rotterdam, Zuid Holland, Nederland, 3015CE
- Rekruttering
- ErasmusMC
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Hovedetterforsker:
- Mohamed Ouhlous, MD
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Underetterforsker:
- Louisa van DIjk, MD
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-
Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
18 år og eldre (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Beskrivelse
Inclusion Criteria:
- Patients suspected of CGI referred to our hospital for further analysis
- Age ≥ 18 years
- Patients who gave informed consent
Exclusion Criteria:
- Age < 18 years
- Unable to give informed consent
- Pregnancy
- Contra-indications for MRI: a. Metal implants which cannot be removed. E.g. cardiac pacemakers/ICD, aneurysm clips, metal stents, artificial heart valve, cochlea/retinal implants, hearing aids, dentures with magnetic click system or with other metal accessories, tattoos with metallic dye, metal plates/pins/screws of bones, piercings b. Claustrophobia c. Inability to lie still for 1 hour to 1,5 hours
- Other criteria the physician considers are not compatible with this study
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Diagnostisk
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
|
Eksperimentell: Nutri drink
MRI flow measurements of mesenterial vessels and portal vein before and after stimulation with nutritional drink
|
To determine the difference in baseline MR flow measurements and post prandial MR flow measurements between patients diagnosed with CGI and patients not diagnosed with CGI
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Determination of difference in baseline MR flow measurements and post prandial MR flow
Tidsramme: 2.5 years
|
The difference in baseline MR flow measurements and post prandial MR flow measurements between patients diagnosed with CGI and patients not diagnosed with CGI (mL/min/kg)
|
2.5 years
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Wich vessel or combination of vessels differentiate best
Tidsramme: 2.5 years
|
Which vessel or which combination of vessels best differentiates between patients diagnosed with CGI and patients not diagnosed with CGI by MR flow measurement by computing sensitivity, specificity, predictive positive value and negative predictive value.
|
2.5 years
|
|
The severity of abdominal pain
Tidsramme: 20/30/40 minutes
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The severity of abdominal pain in course of time after stimulation with nutritional drink, using the Numeric Pain Intensity scale at baseline and 20, 30 and 40 minutes after nutritional drink
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20/30/40 minutes
|
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Determination of difference in MR flow measurements before and after treatment for CGI
Tidsramme: 2.5 years
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The difference in MR flow measurements of the mesenteric vessels prior to and after treatment in patients diagnosed with CGI with persistent relief of symptoms after treatment (in (mL/min/kg)
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2.5 years
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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Sponsor
Etterforskere
- Hovedetterforsker: Mohamed Ouhlous, md, Erasmus Medical Center
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
1. august 2016
Primær fullføring (Forventet)
1. desember 2021
Studiet fullført (Forventet)
1. desember 2021
Datoer for studieregistrering
Først innsendt
12. juli 2016
Først innsendt som oppfylte QC-kriteriene
17. august 2016
Først lagt ut (Anslag)
23. august 2016
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
9. mars 2021
Siste oppdatering sendt inn som oppfylte QC-kriteriene
8. mars 2021
Sist bekreftet
1. mars 2021
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- MR flow
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
NEI
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