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Quantifying Blood Flow in the Aorta (AF-4DMRI-P2)

4 de maio de 2026 atualizado por: Marleen Krommendijk, University of Twente

Quantifying Blood Flow in the Aorta Using Phase-Contrast 4D Flow MRI - Phase 2

This study aims to gain insights into aortic blood flow in healthy volunteers using PC 4D-flow MRI

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Descrição detalhada

The goal of this observational study is to obtain PC 4D flow MRI scans in seventy healthy volunteers (without any known history of cardiovascular disease) to quantify local blood flow in the thoraco-abdominal aorta and its primary side branches and extract boundary conditions for future in-vitro and in-silico studies. Furthermore, the 3D geometry of the vessels within investigated FOVs, starting from ascending aorta to internal/external iliac arteries, will be obtained by performing a separate MRI sequence.

Participants will be asked to undergo MRI scans and are asked to fill out a questionnaire regarding their age, weight, height, and gender. By relating this data to the blood flow patterns observed in the aorta, conclusions can be drawn on the differences in blood flow with gender and how aortic blood flow changes with age.

Tipo de estudo

Observacional

Inscrição (Estimado)

70

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Locais de estudo

  • Holanda
    • Overijssel
      • Enschede, Overijssel, Holanda, 7522 NH
        • Recrutamento
        • TechMed centre, University of Twente
        • Contato:
        • Subinvestigador:
          • Hadi Mirgolbabaee, dr.
        • Subinvestigador:
          • Marleen E. Krommendijk, ir.

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Adulto
  • Adulto mais velho

Aceita Voluntários Saudáveis

Sim

Método de amostragem

Amostra Não Probabilística

População do estudo

Healthy subjects with no known cardiovascular disease or history thereof

Descrição

Inclusion Criteria:

  • Healthy (in particular without any cardiovascular disease or history thereof) men or women
  • 18 years of age or above;
  • BMI ≤ 30;
  • Willingness to undergo MRI scans;
  • Able to provide signed informed consent (IC)

Exclusion Criteria:

  • Irregular heartbeat.;
  • Any history of cardiovascular disease or current cardiovascular disease;
  • The standard MRI exclusion criteria (such as pacemakers, cerebral vascular clips, pregnancy, claustrophobia)

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

Coortes e Intervenções

Grupo / Coorte
Intervenção / Tratamento
Group 1
Five men aged 18-25 and five women aged 18-25
Outro: 4D-flow Magnetic Resonance Imaging
Subjects will undergo MRI scans of the thorax and abdomen from which we will derive aortic blood flow velocity fields. This intervention will be performed in the same manner on all groups.
Outros nomes:
  • Imagem de ressonância magnética
  • Phase contrast MRI
  • PC-MRI
Outro: Questionnaires
Subjects fill in a questionnaire regarding their weight, height, age and gender. They also fill in a safety check form to test if MRI can be applied safely.
Group 2
Five men aged 26-35 and five women aged 26-35
Outro: 4D-flow Magnetic Resonance Imaging
Subjects will undergo MRI scans of the thorax and abdomen from which we will derive aortic blood flow velocity fields. This intervention will be performed in the same manner on all groups.
Outros nomes:
  • Imagem de ressonância magnética
  • Phase contrast MRI
  • PC-MRI
Outro: Questionnaires
Subjects fill in a questionnaire regarding their weight, height, age and gender. They also fill in a safety check form to test if MRI can be applied safely.
Group 3
Five men aged 36-45 and five women aged 36-45
Outro: 4D-flow Magnetic Resonance Imaging
Subjects will undergo MRI scans of the thorax and abdomen from which we will derive aortic blood flow velocity fields. This intervention will be performed in the same manner on all groups.
Outros nomes:
  • Imagem de ressonância magnética
  • Phase contrast MRI
  • PC-MRI
Outro: Questionnaires
Subjects fill in a questionnaire regarding their weight, height, age and gender. They also fill in a safety check form to test if MRI can be applied safely.
Group 4
Five men aged 46-55 and five women aged 46-55
Outro: 4D-flow Magnetic Resonance Imaging
Subjects will undergo MRI scans of the thorax and abdomen from which we will derive aortic blood flow velocity fields. This intervention will be performed in the same manner on all groups.
Outros nomes:
  • Imagem de ressonância magnética
  • Phase contrast MRI
  • PC-MRI
Outro: Questionnaires
Subjects fill in a questionnaire regarding their weight, height, age and gender. They also fill in a safety check form to test if MRI can be applied safely.
Group 5
Five men aged 56-65 and five women aged 56-65
Outro: 4D-flow Magnetic Resonance Imaging
Subjects will undergo MRI scans of the thorax and abdomen from which we will derive aortic blood flow velocity fields. This intervention will be performed in the same manner on all groups.
Outros nomes:
  • Imagem de ressonância magnética
  • Phase contrast MRI
  • PC-MRI
Outro: Questionnaires
Subjects fill in a questionnaire regarding their weight, height, age and gender. They also fill in a safety check form to test if MRI can be applied safely.
Group 6
Five men aged 66-75 and five women aged 66-75
Outro: 4D-flow Magnetic Resonance Imaging
Subjects will undergo MRI scans of the thorax and abdomen from which we will derive aortic blood flow velocity fields. This intervention will be performed in the same manner on all groups.
Outros nomes:
  • Imagem de ressonância magnética
  • Phase contrast MRI
  • PC-MRI
Outro: Questionnaires
Subjects fill in a questionnaire regarding their weight, height, age and gender. They also fill in a safety check form to test if MRI can be applied safely.
Group 7
Five men aged 76-85 and five women aged 76-85
Outro: 4D-flow Magnetic Resonance Imaging
Subjects will undergo MRI scans of the thorax and abdomen from which we will derive aortic blood flow velocity fields. This intervention will be performed in the same manner on all groups.
Outros nomes:
  • Imagem de ressonância magnética
  • Phase contrast MRI
  • PC-MRI
Outro: Questionnaires
Subjects fill in a questionnaire regarding their weight, height, age and gender. They also fill in a safety check form to test if MRI can be applied safely.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Aortic blood flow velocity fields
Prazo: Day 1
Velocity fields will be acquired, consisting of vectors that describe the velocity magnitude (cm/s) and direction (dimensionless) of blood flow in the aorta. For visualisation purposes, arrows will be used to overlay the shape of the volunteers aorta. Colours of the arrrows indicate the velocity magnitude and direction of the arrows inicate the direction of flow. Velocity fields are generated for the the full aorta, from the ascending aorta to internal/external iliac arteries, including branched arteries such as subclavian arteries, common carotid artery, and visceral branch vessels.
Day 1

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Age of volunteer
Prazo: Day 1
Age of volunteer (in years) for division into groups based on gender and age, gathered using a questionnaire.
Day 1
Gender of volunteer
Prazo: Day 1
Gender of volunteer (male/female/other) for division into groups based on gender and age, gathered using a questionnaire.
Day 1
Height of volunteer
Prazo: Day 1
Height (in m) for BMI (in kg/m^2) calculation, gathered using a questionnaire.
Day 1
Weight of volunteer
Prazo: Day 1
Weight (in kg) for BMI (in kg/m^2) calculation, gathered using a questionnaire.
Day 1
Aortic blood flow waveforms
Prazo: Day 1
Waveforms will be acquired that show how aortic blood flow in a certain region of interest progresses over the cardiac cycle, presented as plots of velocity magnitude (cm/s) over time (s). Regions of interest are selected in the ascending aorta, descending aorta, carotid arteries, subclavian arteries, renal arteries, suprarenal aorta, abdominal aorta, common iliac arteries, internal iliac arteries, and external iliac arteries.
Day 1
Wall shear stress
Prazo: Day 1
Wall shear stress (Pa) is a hemodynamic parameter expressing the force acting on a certain area of the vessel wall by the flow of blood. This parameter will be extracted from the blood flow velocity vectors in a certain region of interest (e.g. in the ascending aorta, descending aorta, renal arteries, or iliac arteries) and will be plotted over the cardiac cycle.
Day 1
Oscillatory Shear Index
Prazo: Day 1
Oscillatory Shear Index (dimensionless) is a hemodynamic parameter that defines how much the wall shear stress field changes directions over time, which can tell something about whether the forces on the wall (and the flow of blood) are more uniform or more complex. This parameter will be extracted from the blood flow velocity vectors in a certain region of interest (e.g. in the ascending aorta, descending aorta, renal arteries, or iliac arteries) and will be plotted over the cardiac cycle.
Day 1
Kinetic Energy
Prazo: Day 1
Kinetic Energy (J) in the field of fluid mechanics describes the energy related to the flow of blood in a certain region of interest with a certain mass or volume. This parameter will be extracted from the blood flow velocity vectors in a certain region of interest (e.g. in the ascending aorta, descending aorta, renal arteries, or iliac arteries) and will be plotted over the cardiac cycle.
Day 1
Turbulent Kinetic Energy
Prazo: Day 1
Turbulent Kinetic Energy (J/kg) is a hemodynamic parameter describing the energy related to the fluctuations in blood flow velocity. This parameter will be extracted from the blood flow velocity vectors in a certain region of interest (e.g. in the ascending aorta, descending aorta, renal arteries, or iliac arteries) and will be plotted over the cardiac cycle.
Day 1
Helicity
Prazo: Day 1
Helicity (m^4/s^2) is a hemodynamic parameter that describes how much the blood flow follows a corkscrew-like pattern. This parameter will be extracted from the blood flow velocity vectors in a certain region of interest (e.g. in the ascending aorta, descending aorta, renal arteries, or iliac arteries) and will be plotted over the cardiac cycle.
Day 1
Vorticity
Prazo: Day 1
Vorticity (s^-1) is a hemodynamic parameter that reflects the rotational nature of the blood flow. This parameter will be extracted from the blood flow velocity vectors in a certain region of interest (e.g. in the ascending aorta, descending aorta, renal arteries, or iliac arteries) and will be plotted over the cardiac cycle.
Day 1

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

University of Twente

Investigadores

  • Investigador principal: Michel M.P.J. Reijnen, prof. dr., University of Twente

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

1 de junho de 2026

Conclusão Primária (Estimado)

31 de julho de 2026

Conclusão do estudo (Estimado)

31 de julho de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

17 de março de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

4 de maio de 2026

Primeira postagem (Real)

11 de maio de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

11 de maio de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

4 de maio de 2026

Última verificação

1 de maio de 2026

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • AF-4DMRI-P2
  • NL88490.091.25 (Outro identificador: Centrale Commissie Mensgebonden Onderzoek (CCMO))

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

INDECISO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .

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