Aortic Dissection4D MOTION-2NCT04958083
4D Motion of the Aorta in the Chest and Simulated Wall Stress Distribution in Relation to Aortic Events
A study testing multiphase ECG-gated contrast-enhanced CT in people with Aortic Dissection, run by Royal Brompton & Harefield NHS Foundation Trust at 1 site in United Kingdom.
Trial summary
Aortic disease is a life-threatening condition requires swift surgery or intervention. With modern techniques and vascular prostheses, still quite a few patients suffer surgery/intervention related complications such as suture line pseudoaneurysm, stent- induced re-entry tear, and aneurysmal expansion. Read more about this study
- Who is it for?
- Ages 18 to 95 years
- Conditions the study is for
- Aortic Dissection
- What is being tested?
- multiphase ECG-gated contrast-enhanced CT
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteUnited Kingdom
- Study dates
- Aug 2021to Jun 2023
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 95 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients above 18 years with proximal aortic dissection/aneurysm.
- Patients subjected to aortic surgery or intervention at Royal Brompton and Harefield Hospital.
- Patients agreeing to participate in this study and willing to give written consent.
Who cannot join
- Patients not suitable for surgery or intervention.
- Patients with pre-existing cancer condition or cancer predisposition.
- Patients who are pregnant.
- Patient with critical renal function who cannot tolerate to standard amount contrast agent.
- Patients who cannot give written informed consent.
Trial locations and contacts
1 site in 1 country.
United Kingdom1 site
Royal Brompton Hospital
London
Xun Yuan, MBBS, MMed, x.yuan@rbht.nhs.uk
Christoph Nienaber, MD, PhD, c.nienaber@rbht.nhs.uk
About this study
Aortic disease is a life-threatening condition requires swift surgery or intervention. With modern techniques and vascular prostheses, still quite a few patients suffer surgery/intervention related complications such as suture line pseudoaneurysm, stent- induced re-entry tear, and aneurysmal expansion. Previous studies suggest that these complications may be related to the abnormal aortic motion pattern and biomechanical stress induced by vascular prostheses. The relationship between aortic motion changes and aortic adverse events after treatment still remains unclear.
A dynamic protocol (multiphase contrast-enhanced ECG-gated) CT scan is able to measure the spatial motion of the ascending aorta, and finite element modelling is able to simulate both surgery or endovascular intervention and analyse the biomechanical interaction between vascular prostheses and tissue based on the patient-specific images. This project is aiming to explore and identify the interaction of 4D aortic motion and the biomechanical changes after surgery or endovascular treatment.
Read the detailed description
Overall design The study population will consist of patients to be examined for proximal aortic conditions (dissection or aneurysm) requiring surgery or endovascular intervention. A patient cohort will be recruited to explore the effects of surgical or endovascular prosthesis on the adjacent aorta, and its impact on late clinical outcomes.
Patient recruitment Patients who have proximal aortic conditions and are referred to the aortic team in Royal Brompton and Harefield Hospitals will be screened for eligibility. For this pilot study and in view of the volume of aortic surgery in the Trust (approx. 100 cases per year), 30 patients will be recruited in the first year of this project to be followed for at least one year for clinical outcomes.
Imaging protocol After obtaining written informed consent, a new dynamic (multiphase ECG-gated contrast- enhanced) CT imaging protocol will be used for participants to replace the standard (ECG- gated contrast-enhanced) CT protocol both prior to and after surgical or endovascular intervention. The therapeutic pathway and clinical decision making will not be affected by the new imaging protocol. Study participants will receive the same standard of treatment and care as well as follow up surveillance as all other patients not participating in this study. The same dynamic CT image protocol will be offered prior to hospital discharge.
Image processing and motion analysis Image processing and analysis will be performed offline, and thus not affect the clinical pathway or delay standard treatment. Dynamic images will be extracted from the Trust PACS. Suitable sets of images will be anonymized, reconstructed using a Trust approved software and downloaded to a protected area on a Trust server for offline analysis. The analysis of 4D motion of the aortic root will be conducted using image processing software authorised by the Trust (3D Slicer). Detailed analysis requires the identification of end- systolic and end-diastolic frames, followed by measurements in 6 degrees of freedom (3 directions of displacement and 3 axial rotations in a global coordinate system). The raw motion data will be transferred to a patient-specific anatomical coordinate system (identified by the individual sinotubular junction) for further statistics with Matlab (Mathworks, USA).
Finite element modelling The spatial patient-specific model will be reconstructed from CT image and then automatically meshed for further simulation. The finite element analysis will be performed by using a commercial structural mechanics solver (Abaqus; Dassault Systèmes, France). The 4D motion data will be applied as the boundary condition to describe the motion of the ascending aorta in the model. The pulsatile pressure load from the blood flow will be applied to the inner surface of the model. Virtual surgery or endovascular intervention simulation will then be performed on this model to determine key biomechanical parameters, such as principal stresses and shear strain, which later will be correlated to clinical adverse events during follow-up. The results will allow us to elucidate the role of biomechanical changes in clinical events after surgery/intervention and to identify which parameter might predict adverse outcome in these patients.
- Conditions
- Aortic Dissection
- Being tested
- multiphase ECG-gated contrast-enhanced CT
- Keywords
- aortic disease, finite element analysis, virtual stenting, focal wall stress
- Medical subject headings
- Aortic Dissection, Aortic Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
multiphase ECG-gated contrast-enhanced CTDiagnostic test
Compared with current standard CT imaging, the dynamic CT protocol provides incremental functional information, which is potentially helpful to the individuals under study (such as early awareness for future complications and potential prediction of outcomes). Due to the nature of the acquisition, a wider R-R acquisition window will result in a higher radiation burden than a standard protocol. However, the study protocol will replace the standard routine CT image protocol as it contains both the routine anatomic information and incremental functional information. The time required for the image acquisition and associated radiation will be slightly higher; the additional information from multiple reconstructed phases will justify a slightly higher radiation burden in a usually elderly population. The estimated radiation dose for the standard imaging protocol is approximately 8 mSv. The estimated radiation dose for the modified dynamic CT image acquisition is approximately 18 mSv.
| Study group | Role | What they receive |
|---|---|---|
| aortopathy patient | Experimental | Patients who have proximal aortic conditions and are referred to the aortic team in Royal Brompton and Harefield Hospitals will be screened for eligibility. For this pilot study and in view of the volume of aortic surgery in the Trust (approx. 100 cases per year), 30 patients will be recruited in the first year of this project to be followed for at least one year for clinical outcomes. Receives: Diagnostic Test: multiphase ECG-gated contrast-enhanced CT |
What is being measured
The primary outcome is the main question the study is designed to answer.
motion differential
Quantitative assessment of differential of aortic motion before and after surgery/intervention
Measured: 6 months after the last participant has post-procedure dynamic CT scan
motion predicting aortic events
Motion differences before-after procedure with regards to later aortic events.
Measured: 6 months after the last participant finished 1 year clinical follow up
Secondary outcomes (1)
wall stress distribution
Quantitative description of peak longitudinal and circumferential wall stress before and after surgery/intervention.
Measured: 6 months after the last participant has post-procedure dynamic CT scan
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jul 2021
- Study startAug 2021 (estimated)
- Primary completionDec 2022 (estimated)
- Study completionJun 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (14)Papers the sponsor has linked to this study.
- Other trials for Aortic DissectionStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Royal Brompton & Harefield NHS Foundation Trust
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Christoph Nienaber, MD, PhD, Principal investigator, Royal Brompton and Harefield Hospitals
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04958083
- Sponsor's protocol ID
- 4D Motion-2 IRAS284431
- Acronym
- 4D MOTION-2
- Status last verified
- Jun 2021
- First submitted
- 29 Jun 2021
- Last updated
- 12 Jul 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Suenaga E, Sato M, Fumoto H. Ascending aortic replacement for acute type A aortic dissection in octogenarians. Gen Thorac Cardiovasc Surg. 2016 Mar;64(3):138-43. doi: 10.1007/s11748-015-0613-0. Epub 2015 Dec 16.
PubMed 26670778Pape LA, Awais M, Woznicki EM, Suzuki T, Trimarchi S, Evangelista A, Myrmel T, Larsen M, Harris KM, Greason K, Di Eusanio M, Bossone E, Montgomery DG, Eagle KA, Nienaber CA, Isselbacher EM, O'Gara P. Presentation, Diagnosis, and Outcomes of Acute Aortic Dissection: 17-Year Trends From the International Registry of Acute Aortic Dissection. J Am Coll Cardiol. 2015 Jul 28;66(4):350-8. doi: 10.1016/j.jacc.2015.05.029.
PubMed 26205591Eggebrecht H, Nienaber CA, Neuhauser M, Baumgart D, Kische S, Schmermund A, Herold U, Rehders TC, Jakob HG, Erbel R. Endovascular stent-graft placement in aortic dissection: a meta-analysis. Eur Heart J. 2006 Feb;27(4):489-98. doi: 10.1093/eurheartj/ehi493. Epub 2005 Oct 14.
PubMed 16227309Fattori R, Nienaber CA, Rousseau H, Beregi JP, Heijmen R, Grabenwoger M, Piquet P, Lovato L, Dabbech C, Kische S, Gaxotte V, Schepens M, Ehrlich M, Bartoli JM; Talent Thoracic Retrospective Registry. Results of endovascular repair of the thoracic aorta with the Talent Thoracic stent graft: the Talent Thoracic Retrospective Registry. J Thorac Cardiovasc Surg. 2006 Aug;132(2):332-9. doi: 10.1016/j.jtcvs.2006.03.055.
PubMed 16872959Hassoun HT, Matsumura JS. The COOK TX2 thoracic stent graft: preliminary experience and trial design. Semin Vasc Surg. 2006 Mar;19(1):32-9. doi: 10.1053/j.semvascsurg.2005.11.003.
PubMed 16533690Kwolek CJ, Fairman R. Update on thoracic aortic endovascular grafting using the medtronic talent device. Semin Vasc Surg. 2006 Mar;19(1):25-31. doi: 10.1053/j.semvascsurg.2005.11.002.
PubMed 16533689Makaroun MS, Dillavou ED, Kee ST, Sicard G, Chaikof E, Bavaria J, Williams D, Cambria RP, Mitchell RS. Endovascular treatment of thoracic aortic aneurysms: results of the phase II multicenter trial of the GORE TAG thoracic endoprosthesis. J Vasc Surg. 2005 Jan;41(1):1-9. doi: 10.1016/j.jvs.2004.10.046.
PubMed 15696036Moon MC, Greenberg RK, Morales JP, Martin Z, Lu Q, Dowdall JF, Hernandez AV. Computed tomography-based anatomic characterization of proximal aortic dissection with consideration for endovascular candidacy. J Vasc Surg. 2011 Apr;53(4):942-9. doi: 10.1016/j.jvs.2010.10.067. Epub 2011 Feb 23.
PubMed 21345636Sobocinski J, O'Brien N, Maurel B, Bartoli M, Goueffic Y, Sassard T, Midulla M, Koussa M, Vincentelli A, Haulon S. Endovascular approaches to acute aortic type A dissection: a CT-based feasibility study. Eur J Vasc Endovasc Surg. 2011 Oct;42(4):442-7. doi: 10.1016/j.ejvs.2011.04.037. Epub 2011 Jul 20.
PubMed 21764338Szeto WY, McGarvey M, Pochettino A, Moser GW, Hoboken A, Cornelius K, Woo EY, Carpenter JP, Fairman RM, Bavaria JE. Results of a new surgical paradigm: endovascular repair for acute complicated type B aortic dissection. Ann Thorac Surg. 2008 Jul;86(1):87-93; discussion 93-4. doi: 10.1016/j.athoracsur.2008.04.003.
PubMed 18573403Yuan X, Mitsis A, Semple T, Castro Verdes M, Cambronero-Cortinas E, Tang Y, Nienaber CA. False lumen intervention to promote remodelling and thrombosis-The FLIRT concept in aortic dissection. Catheter Cardiovasc Interv. 2018 Oct 1;92(4):732-740. doi: 10.1002/ccd.27599. Epub 2018 Mar 30.
PubMed 29602262Roques F, Michel P, Goldstone AR, Nashef SA. The logistic EuroSCORE. Eur Heart J. 2003 May;24(9):881-2. doi: 10.1016/s0195-668x(02)00799-6. No abstract available.
PubMed 12727160Charlson ME, Pompei P, Ales KL, MacKenzie CR. A new method of classifying prognostic comorbidity in longitudinal studies: development and validation. J Chronic Dis. 1987;40(5):373-83. doi: 10.1016/0021-9681(87)90171-8.
PubMed 3558716Yuan X, Kan X, Xu XY, Nienaber CA. Finite element modeling to predict procedural success of thoracic endovascular aortic repair in type A aortic dissection. JTCVS Tech. 2020 Oct 13;4:40-47. doi: 10.1016/j.xjtc.2020.10.006. eCollection 2020 Dec.
PubMed 34317961
Study at a glance
From the registry record, last updated by the sponsor on 12 Jul 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- 4D Motion of the Aorta in the Chest and Simulated Wall Stress Distribution in Relation to Aortic Events
- ClinicalTrials.gov ID
- NCT04958083
- Acronym / sponsor ID
- 4D MOTION-2 / 4D Motion-2 IRAS284431
- Conditions
- Aortic Dissection
- Keywords
- aortic disease, finite element analysis, virtual stenting, focal wall stress
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- Royal Brompton & Harefield NHS Foundation TrustUniversity, hospital or other
- Study start
- Aug 2021 (estimated)
- Primary completion
- Dec 2022 (estimated)
- Study completion
- Jun 2023 (estimated)
- First posted
- 12 Jul 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Aortic disease is a life-threatening condition requires swift surgery or intervention. With modern techniques and vascular prostheses, still quite a few patients suffer surgery/intervention related complications such as suture line pseudoaneurysm, stent- induced re-entry tear, and aneurysmal expansion. Previous studies suggest that these complications may be related to the abnormal aortic motion pattern and biomechanical stress induced by vascular prostheses. The relationship between aortic motion changes and aortic adverse events after treatment still remains unclear.
A dynamic protocol (multiphase contrast-enhanced ECG-gated) CT scan is able to measure the spatial motion of the ascending aorta, and finite element modelling is able to simulate both surgery or endovascular intervention and analyse the biomechanical interaction between vascular prostheses and tissue based on the patient-specific images. This project is aiming to explore and identify the interaction of 4D aortic motion and the biomechanical changes after surgery or endovascular treatment.
Detailed description
Overall design The study population will consist of patients to be examined for proximal aortic conditions (dissection or aneurysm) requiring surgery or endovascular intervention. A patient cohort will be recruited to explore the effects of surgical or endovascular prosthesis on the adjacent aorta, and its impact on late clinical outcomes.
Patient recruitment Patients who have proximal aortic conditions and are referred to the aortic team in Royal Brompton and Harefield Hospitals will be screened for eligibility. For this pilot study and in view of the volume of aortic surgery in the Trust (approx. 100 cases per year), 30 patients will be recruited in the first year of this project to be followed for at least one year for clinical outcomes.
Imaging protocol After obtaining written informed consent, a new dynamic (multiphase ECG-gated contrast- enhanced) CT imaging protocol will be used for participants to replace the standard (ECG- gated contrast-enhanced) CT protocol both prior to and after surgical or endovascular intervention. The therapeutic pathway and clinical decision making will not be affected by the new imaging protocol. Study participants will receive the same standard of treatment and care as well as follow up surveillance as all other patients not participating in this study. The same dynamic CT image protocol will be offered prior to hospital discharge.
Image processing and motion analysis Image processing and analysis will be performed offline, and thus not affect the clinical pathway or delay standard treatment. Dynamic images will be extracted from the Trust PACS. Suitable sets of images will be anonymized, reconstructed using a Trust approved software and downloaded to a protected area on a Trust server for offline analysis. The analysis of 4D motion of the aortic root will be conducted using image processing software authorised by the Trust (3D Slicer). Detailed analysis requires the identification of end- systolic and end-diastolic frames, followed by measurements in 6 degrees of freedom (3 directions of displacement and 3 axial rotations in a global coordinate system). The raw motion data will be transferred to a patient-specific anatomical coordinate system (identified by the individual sinotubular junction) for further statistics with Matlab (Mathworks, USA).
Finite element modelling The spatial patient-specific model will be reconstructed from CT image and then automatically meshed for further simulation. The finite element analysis will be performed by using a commercial structural mechanics solver (Abaqus; Dassault Systèmes, France). The 4D motion data will be applied as the boundary condition to describe the motion of the ascending aorta in the model. The pulsatile pressure load from the blood flow will be applied to the inner surface of the model. Virtual surgery or endovascular intervention simulation will then be performed on this model to determine key biomechanical parameters, such as principal stresses and shear strain, which later will be correlated to clinical adverse events during follow-up. The results will allow us to elucidate the role of biomechanical changes in clinical events after surgery/intervention and to identify which parameter might predict adverse outcome in these patients.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| aortopathy patient | Experimental | Diagnostic Test: multiphase ECG-gated contrast-enhanced CTPatients who have proximal aortic conditions and are referred to the aortic team in Royal Brompton and Harefield Hospitals will be screened for eligibility. For this pilot study and in view of the volume of aortic surgery in the Trust (approx. 100 cases per year), 30 patients will be recruited in the first year of this project to be followed for at least one year for clinical outcomes. |
Who may qualify
- Ages
- 18 to 95 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Patients above 18 years with proximal aortic dissection/aneurysm.
- Patients subjected to aortic surgery or intervention at Royal Brompton and Harefield Hospital.
- Patients agreeing to participate in this study and willing to give written consent.
Key exclusion criteria (5 listed)
- Patients not suitable for surgery or intervention.
- Patients with pre-existing cancer condition or cancer predisposition.
- Patients who are pregnant.
- Patient with critical renal function who cannot tolerate to standard amount contrast agent.
- Patients who cannot give written informed consent.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| multiphase ECG-gated contrast-enhanced CTCompared with current standard CT imaging, the dynamic CT protocol provides incremental functional information, which is potentially helpful to the individuals under study (such as early awareness for future complications and potential prediction of outcomes). Due to the nature of the acquisition, a wider R-R acquisition window will result in a higher radiation burden than a standard protocol. However, the study protocol will replace the standard routine CT image protocol as it contains both the routine anatomic information and incremental functional information. The time required for the image acquisition and associated radiation will be slightly higher; the additional information from multiple reconstructed phases will justify a slightly higher radiation burden in a usually elderly population. The estimated radiation dose for the standard imaging protocol is approximately 8 mSv. The estimated radiation dose for the modified dynamic CT image acquisition is approximately 18 mSv. | Diagnostic test | aortopathy patient |
Primary outcome
motion differential
Time frame: 6 months after the last participant has post-procedure dynamic CT scan
Quantitative assessment of differential of aortic motion before and after surgery/intervention
motion predicting aortic events
Time frame: 6 months after the last participant finished 1 year clinical follow up
Motion differences before-after procedure with regards to later aortic events.
1 secondary outcome
wall stress distribution
Time frame: 6 months after the last participant has post-procedure dynamic CT scan
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Jul 2021.
- Results publication: PubMed 26670778Suenaga E, Sato M, Fumoto H. Ascending aortic replacement for acute type A aortic dissection in octogenarians. Gen Thorac Cardiovasc Surg. 2016 Mar;64(3):138-43. doi: 10.1007/s11748-015-0613-0. Epub 2015 Dec 16.
- Results publication: PubMed 26205591Pape LA, Awais M, Woznicki EM, Suzuki T, Trimarchi S, Evangelista A, Myrmel T, Larsen M, Harris KM, Greason K, Di Eusanio M, Bossone E, Montgomery DG, Eagle KA, Nienaber CA, Isselbacher EM, O'Gara P. Presentation, Diagnosis, and Outcomes of Acute Aortic Dissection: 17-Year Trends From the International Registry of Acute Aortic Dissection. J Am Coll Cardiol. 2015 Jul 28;66(4):350-8. doi: 10.1016/j.jacc.2015.05.029.
- Results publication: PubMed 16227309Eggebrecht H, Nienaber CA, Neuhauser M, Baumgart D, Kische S, Schmermund A, Herold U, Rehders TC, Jakob HG, Erbel R. Endovascular stent-graft placement in aortic dissection: a meta-analysis. Eur Heart J. 2006 Feb;27(4):489-98. doi: 10.1093/eurheartj/ehi493. Epub 2005 Oct 14.
- Results publication: PubMed 16872959Fattori R, Nienaber CA, Rousseau H, Beregi JP, Heijmen R, Grabenwoger M, Piquet P, Lovato L, Dabbech C, Kische S, Gaxotte V, Schepens M, Ehrlich M, Bartoli JM; Talent Thoracic Retrospective Registry. Results of endovascular repair of the thoracic aorta with the Talent Thoracic stent graft: the Talent Thoracic Retrospective Registry. J Thorac Cardiovasc Surg. 2006 Aug;132(2):332-9. doi: 10.1016/j.jtcvs.2006.03.055.
- Results publication: PubMed 16533690Hassoun HT, Matsumura JS. The COOK TX2 thoracic stent graft: preliminary experience and trial design. Semin Vasc Surg. 2006 Mar;19(1):32-9. doi: 10.1053/j.semvascsurg.2005.11.003.
- Results publication: PubMed 16533689Kwolek CJ, Fairman R. Update on thoracic aortic endovascular grafting using the medtronic talent device. Semin Vasc Surg. 2006 Mar;19(1):25-31. doi: 10.1053/j.semvascsurg.2005.11.002.
- Results publication: PubMed 15696036Makaroun MS, Dillavou ED, Kee ST, Sicard G, Chaikof E, Bavaria J, Williams D, Cambria RP, Mitchell RS. Endovascular treatment of thoracic aortic aneurysms: results of the phase II multicenter trial of the GORE TAG thoracic endoprosthesis. J Vasc Surg. 2005 Jan;41(1):1-9. doi: 10.1016/j.jvs.2004.10.046.
- Results publication: PubMed 21345636Moon MC, Greenberg RK, Morales JP, Martin Z, Lu Q, Dowdall JF, Hernandez AV. Computed tomography-based anatomic characterization of proximal aortic dissection with consideration for endovascular candidacy. J Vasc Surg. 2011 Apr;53(4):942-9. doi: 10.1016/j.jvs.2010.10.067. Epub 2011 Feb 23.
- Results publication: PubMed 21764338Sobocinski J, O'Brien N, Maurel B, Bartoli M, Goueffic Y, Sassard T, Midulla M, Koussa M, Vincentelli A, Haulon S. Endovascular approaches to acute aortic type A dissection: a CT-based feasibility study. Eur J Vasc Endovasc Surg. 2011 Oct;42(4):442-7. doi: 10.1016/j.ejvs.2011.04.037. Epub 2011 Jul 20.
- Results publication: PubMed 18573403Szeto WY, McGarvey M, Pochettino A, Moser GW, Hoboken A, Cornelius K, Woo EY, Carpenter JP, Fairman RM, Bavaria JE. Results of a new surgical paradigm: endovascular repair for acute complicated type B aortic dissection. Ann Thorac Surg. 2008 Jul;86(1):87-93; discussion 93-4. doi: 10.1016/j.athoracsur.2008.04.003.
- Results publication: PubMed 29602262Yuan X, Mitsis A, Semple T, Castro Verdes M, Cambronero-Cortinas E, Tang Y, Nienaber CA. False lumen intervention to promote remodelling and thrombosis-The FLIRT concept in aortic dissection. Catheter Cardiovasc Interv. 2018 Oct 1;92(4):732-740. doi: 10.1002/ccd.27599. Epub 2018 Mar 30.
- Results publication: PubMed 12727160Roques F, Michel P, Goldstone AR, Nashef SA. The logistic EuroSCORE. Eur Heart J. 2003 May;24(9):881-2. doi: 10.1016/s0195-668x(02)00799-6. No abstract available.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Christoph Nienaber, MD, PhD principal investigator
Royal Brompton and Harefield Hospitals
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing multiphase ECG-gated contrast-enhanced CT in people with Aortic Dissection, run by Royal Brompton & Harefield NHS Foundation Trust at 1 site in United Kingdom.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 12 Jul 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Christoph Nienaber, MD, PhD (+4402073528121 ext. 2817, c.nienaber@rbht.nhs.uk), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
motion differential (time frame: 6 months after the last participant has post-procedure dynamic CT scan). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04958083, which also lists 14 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Jul 2021.