- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT07620925
Derivation and Validation of the Aortic Valve Echocardiographic Calcium Score to Confirm Severe Aortic Stenosis: the Echo-AVCS Study (Echo-AVCS)
3. Juni 2026 aktualisiert von: Emanuele Barbato, Azienda Ospedaliera "Sant'Andrea"
The Echo-AVCS Study is an investigator-initiated, prospective, multicenter observational study designed to derive and validate an artificial intelligence (AI)-based echocardiographic aortic valve calcium score (Echo-AVCS) for confirming severe aortic stenosis (AS).
Transthoracic echocardiography (TTE) is the standard imaging modality for assessing AS severity; however, discrepancies between valve area and transvalvular gradient measurements may complicate diagnosis, particularly in low-flow or discordant AS presentations.
Cardiac computed tomography (CT)-derived aortic valve calcium scoring is currently used to resolve diagnostic uncertainty, but it involves additional cost and radiation exposure.
This study will enroll consecutive adult patients undergoing clinically indicated TTE and cardiac CT with calcium scoring performed within 3 months.
Standardized echocardiographic images will be centrally analyzed using dedicated AI-based image segmentation and machine learning methods to quantify aortic valve calcification directly from TTE images.
CT-derived aortic valve calcium score will serve as the reference standard.
The primary objective is to derive and validate the Echo-AVCS score for identifying severe AS.
Secondary objectives include determination of sex-specific diagnostic thresholds, correlation with CT calcium volume, association with symptoms and NYHA class, and evaluation of prognostic associations with aortic valve replacement, heart failure hospitalization, cardiovascular events, and mortality at 1-year follow-up.
Studienübersicht
Status
Rekrutierung
Bedingungen
Intervention / Behandlung
Studientyp
Beobachtungs
Einschreibung (Geschätzt)
250
Kontakte und Standorte
Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.
Studienkontakt
- Name: Emanuele Barbato, Full Professor
- Telefonnummer: 0633778763
- E-Mail: emanuele.barbato@uniroma1.it
Studienorte
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Bologna, Italien
- Rekrutierung
- University of Bologna
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Kontakt:
- Carmine Pizzi
- E-Mail: carmine.pizzi@unibo.it
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Unterermittler:
- Luca Bergamaschi
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Unterermittler:
- Matteo Armillotta
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Unterermittler:
- Francesco Angeli
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Milan, Italien
- Rekrutierung
- Centro Cardiologico Monzino
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Kontakt:
- Gianluca Pontone
- Telefonnummer: 02 58002574
- E-Mail: gianluca.pontone@cardiologicomonzino.it
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Unterermittler:
- Saima Mushtaq, MD, PhD
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Unterermittler:
- Maria Elisabetta Mancini, MD
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Milan, Italien
- Rekrutierung
- IRCCS Galeazzi-Sant'Amborgio
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Kontakt:
- Edoardo Conte
- E-Mail: edoardo.conte86@gmail.com
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Unterermittler:
- Tommaso Viva
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Unterermittler:
- Davide Marchetti
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Milan, Italien
- Aktiv, nicht rekrutierend
- Politecnico di Milano
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Roma, Italien
- Rekrutierung
- Sant'Andrea University Hospital
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Unterermittler:
- Pasquale Paolisso, MD, PhD
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Unterermittler:
- Marta Belmonte, MD, PhD
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Kontakt:
- Emanuele Barbato, Full Professor
- Telefonnummer: 0633778763
- E-Mail: emanuele.barbato@uniroma1.it
-
Kontakt:
- Pasquale Paolisso, MD, PhD
- E-Mail: pasquale.paolisso@gmail.com
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Teilnahmekriterien
Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Nein
Probenahmeverfahren
Wahrscheinlichkeitsstichprobe
Studienpopulation
The Echo-CA score Study is an investigator-initiated, prospective, multicenter study of consecutive patients undergoing clinically indicated standard transthoracic echocardiography and cardiac CT with available calcium score performed within 3 months.
The study population is expected to include approximately 50% patients with severe AS and 50% without severe AS, in order to ensure a balanced case-control distribution and optimize the precision of diagnostic performance estimates.
All patients will be managed according to current standards of care.
Clinical evaluation will include systematic collection of cardiovascular risk factors, comorbidities, medical therapy, and detailed symptom assessment (angina, syncope, dyspnea), as well as NYHA functional class.
Each participant will undergo: i) comprehensive transthoracic echocardiography (TTE) performed according to current ESC Guideline; ii) cardiac CT with aortic valve calcium quantification, performed according to contemporary acquisiti
Beschreibung
Inclusion Criteria:
- Age > 18 years old
- Clinical indication for standard transthoracic echocardiography.
- Clinical indication for cardiac CT with available calcium score.
- 3-month time interval between transthoracic echocardiography and cardiac CT.
- Able to give informed consent.
Exclusion Criteria:
- Patients with inadequate transthoracic echocardiographic images.
- Poor quality cardiac CT, inadequate for standard calcium score assessment.
- Patients with known prior stents and/or coronary artery bypass grafts.
- Patients with known previous percutaneous or surgical aortic valve replacement.
- Patients with active or a history of endocarditis.
- Patients with congenital heart defects (other than isolated bicuspid aortic valve).
Studienplan
Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.
Wie ist die Studie aufgebaut?
Designdetails
Kohorten und Interventionen
Gruppe / Kohorte |
Intervention / Behandlung |
|---|---|
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Patients undergoing transthoracic echocardiography and cardiac-CT with available calcium score
Consecutive patients undergoing clinically indicated standard transthoracic echocardiography and cardiac CT with available calcium score performed within 3 months
|
This is a non-interventional, observational study in which all patients will undergo clinically indicated standard-of-care transthoracic echocardiography (TTE) and cardiac computed tomography (CT) with aortic valve calcium scoring.
No investigational drug, device, or additional invasive procedure will be administered as part of the study.
Echocardiographic images acquired during routine clinical practice will be anonymized and centrally analyzed using dedicated artificial intelligence-based software to derive and validate the echocardiographic aortic valve calcium score.
Patient management, follow-up, and therapeutic decisions, including referral for aortic valve replacement, will remain entirely at the discretion of the treating physicians according to current clinical guidelines and standard practice.
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Derivation of Echo-AVCS
Zeitfenster: 6 months
|
To derive an echocardiographic aortic valve calcium score (Echo-AVCS) for confirming severe aortic stenosis (AS), using CT-derived aortic valve calcium as the reference standard.
|
6 months
|
|
Validation of Echo-AVCS
Zeitfenster: 6 months
|
To validate an echocardiographic aortic valve calcium score (Echo-AVCS) for confirming severe aortic stenosis (AS), using CT-derived aortic valve calcium as the reference standard.
|
6 months
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Sex-specific thresholds
Zeitfenster: 6 months
|
To determine sex-specific thresholds (male vs. female) for the echocardiographic aortic valve calcium score (Echo-AVCS).
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6 months
|
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Correlation between the echocardiographic aortic valve calcium score and the calcium volume (mm³)
Zeitfenster: 6 months
|
To assess the correlation between the echocardiographic aortic valve calcium score and the calcium volume (mm³) measured by cardiac computed tomography.
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6 months
|
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Correlation of the echocardiographic aortic valve calcium score and the presence and occurrence of patient symptoms
Zeitfenster: 1-year
|
To correlate the echocardiographic aortic valve calcium score and the presence and occurrence of patient symptoms (angina, syncope, and dyspnea).
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1-year
|
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Association between the echocardiographic aortic valve calcium score and the time to aortic valve replacement (AVR)
Zeitfenster: 1 year
|
To evaluate the association between the echocardiographic aortic valve calcium score and the time to aortic valve replacement (AVR) according to current ESC Guidelines.
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1 year
|
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Correlation of the echocardiographic aortic valve calcium score with the patient's NYHA Class.
Zeitfenster: 1 year
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To correlate the echocardiographic aortic valve calcium score with the patient's NYHA Class.
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1 year
|
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Correlation of the echocardiographic aortic valve calcium score with all-cause death at 1-year follow-up.
Zeitfenster: 1 year
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To correlate the echocardiographic aortic valve calcium score with all-cause death at 1-year follow-up.
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1 year
|
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Correlation of the echocardiographic aortic valve calcium score with cardiovascular death at 1-year follow-up.
Zeitfenster: 1 year
|
To correlate the echocardiographic aortic valve calcium score with cardiovascular death at 1-year follow-up.
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1 year
|
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Correlation of the echocardiographic aortic valve calcium score with hospitalization for heart failure at 1-year follow-up.
Zeitfenster: 1 year
|
To correlate the echocardiographic aortic valve calcium score with hospitalization for heart failure at 1-year follow-up.
|
1 year
|
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Correlation of the echocardiographic aortic valve calcium score with major adverse cardiovascular events (cardiovascular death and hospitalization for heart failure) at 1-year follow-up.
Zeitfenster: 1 year
|
To correlate the echocardiographic aortic valve calcium score with major adverse cardiovascular events (cardiovascular death and hospitalization for heart failure) at 1-year follow-up.
|
1 year
|
Mitarbeiter und Ermittler
Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.
Studienaufzeichnungsdaten
Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.
Haupttermine studieren
Studienbeginn (Tatsächlich)
1. März 2026
Primärer Abschluss (Geschätzt)
31. Dezember 2026
Studienabschluss (Geschätzt)
31. Dezember 2027
Studienanmeldedaten
Zuerst eingereicht
27. Mai 2026
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
27. Mai 2026
Zuerst gepostet (Tatsächlich)
2. Juni 2026
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
4. Juni 2026
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
3. Juni 2026
Zuletzt verifiziert
1. Mai 2026
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Aortenklappenerkrankung
- Herz-Kreislauf-Erkrankungen
- Herzkrankheiten
- Herzklappenerkrankungen
- Ventrikuläre Ausflussobstruktion
- Aortenklappenstenose
- Aortenklappe, Verkalkung von
- Diagnosetechniken und Verfahren
- Diagnose
- Diagnostische Bildgebung
- Diagnosetechniken, kardiovaskulär
- Herzfunktionstests
- Herzbildgebungstechniken
- Ultraschall
- Echokardiographie
Andere Studien-ID-Nummern
- 0335/2026
Plan für individuelle Teilnehmerdaten (IPD)
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Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Nein
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
Nein
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