- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT07762677
This Prospective Observational Study Aims to Evaluate the Capability of Ultra-high-resolution Photon-counting CT Angiography (UHR PCD-CTA) for Noninvasive Evaluation of Intracranial Venous Sinus Stents. The Study Will Compare Image Quality, Stent Visualization, Metal-related Artifacts, and Diagnosti
Evaluation of Ultra-High-Resolution Photon-Counting CT Angiography for Intracranial Venous Sinus Stent Assessment
Studieoversikt
Status
Detaljert beskrivelse
Intracranial venous sinus stenting has become an important treatment option for patients with symptomatic venous sinus stenosis, particularly those with idiopathic intracranial hypertension. Accurate imaging follow-up after stent placement is essential for evaluating stent patency, recurrent stenosis, and potential complications such as in-stent thrombosis or occlusion.
Conventional CT angiography (CTA) is commonly used for noninvasive follow-up after venous sinus stent implantation; however, accurate assessment of stented venous sinuses remains challenging due to metal-related artifacts. Blooming artifact caused by the high attenuation of metallic stent material may result in overestimation of stent thickness and obscuration of the stent lumen. In addition, beam-hardening artifacts from the stent and adjacent skull structures may further degrade image quality and reduce diagnostic confidence, potentially limiting the ability of CTA to detect clinically significant restenosis or thrombotic complications.
Studietype
Registrering (Antatt)
Kontakter og plasseringer
Studiekontakt
- Navn: Jinhao Lyu, MD
- Telefonnummer: +8615903562929
- E-post: 330322990@qq.com
Studer Kontakt Backup
- Navn: Jinying He
- E-post: 1527012389@qq.com
Studiesteder
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Beijing Municipality
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Beijing, Beijing Municipality, Kina, 100853
- Rekruttering
- Chinese PLA General Hospital
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Ta kontakt med:
- Jinhao Lyu, MD
- Telefonnummer: +8615903562929
- E-post: 330322990@qq.com
-
Ta kontakt med:
- Jinying He
- Telefonnummer: +8613854153820
- E-post: 1527012389@qq.com
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Voksen
- Eldre voksen
Tar imot friske frivillige
Prøvetakingsmetode
Studiepopulasjon
Beskrivelse
Inclusion Criteria:
- Adults aged ≥18 years.
- History of intracranial venous sinus stent implantation.
- Undergoing follow-up contrast-enhanced CT angiography after stent -placement.
- Available clinical and imaging data.
Exclusion Criteria:
- Severe motion artifacts affecting image interpretation.
- Contraindication to iodinated contrast media.
- Severe renal impairment preventing contrast-enhanced CT examination.
- Incomplete imaging data.
- Other conditions preventing reliable assessment of the venous sinus stent.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
Kohorter og intervensjoner
Gruppe / Kohort |
|---|
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Patients With Intracranial Venous Sinus Stenosis
Patients with symptomatic intracranial venous sinus stenosis who underwent CT angiography before and after venous sinus stent implantation.
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Agreement between UHR PCD-CTA and DSA for intracranial venous sinus stent patency
Tidsramme: 1-4 years
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Agreement between ultra-high-resolution photon-counting detector CT angiography (UHR PCD-CTA) and digital subtraction angiography (DSA) for the assessment of intracranial venous sinus stent patency will be quantified using Cohen's kappa (κ) coefficient.
Stent patency will be classified according to the predefined diagnostic criteria, with DSA serving as the reference standard.
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1-4 years
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Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Signal-to-noise ratio on UHR PCD-CTA
Tidsramme: 1-4years
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Signal-to-noise ratio (SNR) will be calculated using CT attenuation and image noise measurements obtained from predefined regions of interest on UHR PCD-CTA images.
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1-4years
|
Samarbeidspartnere og etterforskere
Sponsor
Etterforskere
- Studiestol: Xin Lou, Chinese PLA General Hospital
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Antatt)
Studiet fullført (Antatt)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Andre studie-ID-numre
- PCD-CT venous Stent
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Studerer et amerikansk FDA-regulert enhetsprodukt
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