- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT07602010
Comparison of CT and MR (VI-RADS) Imaging for Local Bladder Cancer Staging
Prospective Diagnostic Accuracy Study Comparing CT and MRI (VI-RADS) for Local Staging of Newly Diagnosed Bladder Cancer
Descripción general del estudio
Estado
Descripción detallada
Accurate local staging is crucial for distinguishing non-muscle-invasive from muscle-invasive bladder cancer and guiding treatment decisions. While CT is widely used in clinical practice, MRI with VI-RADS has demonstrated higher diagnostic performance in previous retrospective and meta-analytic studies. However, prospective paired comparisons in the same patients are limited.
In this single-center prospective study, newly diagnosed bladder cancer patients undergo cystoscopy, contrast-enhanced CT, and multiparametric MRI prior to definitive histopathological sampling. Two radiologists independently assess imaging in a blinded research setting. Diagnostic performance of MRI and CT is compared using paired statistical analyses, with additional evaluation of interobserver agreement and tumor characteristics.
Tipo de estudio
Inscripción (Estimado)
Contactos y Ubicaciones
Estudio Contacto
- Nombre: Study Coordinator, Department of Urology
- Número de teléfono: +47 22 89 40 00
- Correo electrónico: postmottak@ous-hf.no
Ubicaciones de estudio
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Oslo, Noruega
- Reclutamiento
- Oslo University Hospital
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Contacto:
- Study Coordinator, Department of Urology
- Número de teléfono: +47 22 89 40 00
- Correo electrónico: postmottak@ous-hf.no
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Investigador principal:
- Andreas Habberstad, MD, PhD
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Método de muestreo
Población de estudio
The study population consists of adult patients with newly diagnosed bladder cancer identified on cystoscopy at a tertiary referral hospital. Eligible participants are patients planned for transurethral resection of the bladder tumor (TURBT) and/or cystectomy as part of standard clinical care, and who are able to undergo both contrast-enhanced computed tomography (CT) and multiparametric magnetic resonance imaging (MRI) prior to definitive histopathological assessment.
Patients are included irrespective of tumor stage or grade at presentation, provided that imaging is performed within the defined preoperative diagnostic pathway. Patients with prior bladder cancer treatment or contraindications to imaging are excluded.
Descripción
Inclusion Criteria:
- Age ≥ 18 years
- Newly diagnosed bladder cancer on cystoscopy
- Planned TURBT or cystectomy within 6 weeks
- Eligible for both CT and MRI within 6 weeks
- Written informed consent provided
Exclusion Criteria:
- Contraindications to MRI or iodinated contrast media
- Prior treatment for bladder cancer
- Pregnancy
- Non-malignant bladder lesions
- Tumors located in bladder diverticula
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
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Imaging Comparison Group
All participants undergo contrast-enhanced CT and multiparametric MRI (VI-RADS) as part of routine diagnostic work-up prior to transurethral resection of the bladder tumor or cystectomy.
Imaging findings are compared with histopathology for assessment of diagnostic accuracy.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
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Diagnostic Accuracy for Detection of Muscle-Invasive Bladder Cancer (≥T2)
Periodo de tiempo: From imaging to final histopathological reference standard (up to 12 months)
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The primary outcome is the diagnostic accuracy of multiparametric magnetic resonance imaging (MRI) using the Vesical Imaging-Reporting and Data System (VI-RADS) compared with contrast-enhanced computed tomography (CT) for the detection of muscle-invasive bladder cancer (pathological stage ≥T2).
Sensitivity and specificity will be calculated using histopathology from transurethral resection of the bladder tumor, re-TURBT, and/or cystectomy as the reference standard.
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From imaging to final histopathological reference standard (up to 12 months)
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Positive and Negative Predictive Values
Periodo de tiempo: From imaging to final histopathological reference standard (up to 12 months)
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Positive predictive value (PPV) and negative predictive value (NPV) of MRI (VI-RADS) and CT for detection of muscle-invasive bladder cancer (≥T2), calculated using histopathology as the reference standard.
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From imaging to final histopathological reference standard (up to 12 months)
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Interobserver Agreement for MRI and CT Tumor Staging
Periodo de tiempo: During blinded image evaluation following imaging acquisition
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Interobserver agreement between two independent radiologists for MRI VI-RADS scoring and CT-based T-stage assessment, quantified using weighted kappa statistics in a blinded research reading setting.
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During blinded image evaluation following imaging acquisition
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Proportion of correctly classified Tumor T-stage (Ta-T4) by MRI and CT
Periodo de tiempo: From imaging to final histopathological reference standard (up to 12 months)
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Proportion of correctly classified tumor T-stage (Ta-T4) by MRI and CT compared with histopathological staging from TURBT and/or cystectomy.
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From imaging to final histopathological reference standard (up to 12 months)
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Diagnostic accuracy of MRI and CT for detection of muscle-invasive bladder cancer within tumor subgroups
Periodo de tiempo: From imaging to final histopathological reference standard (up to 12 months)
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Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of MRI and CT for detection of muscle-invasive bladder cancer, assessed within predefined tumor subgroups (tumor size, morphology, tumor location and multiplicity), using histopathology as the reference standard.
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From imaging to final histopathological reference standard (up to 12 months)
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Andreas Habberstad, MD, PhD, Oslo University Hospital
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Finalización primaria (Estimado)
Finalización del estudio (Estimado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Enfermedades urogenitales
- Neoplasias urogenitales
- Neoplasias por sitio
- Neoplasias
- Enfermedades urogenitales masculinas
- Enfermedades urológicas
- Enfermedades urogenitales femeninas
- Enfermedades urogenitales femeninas y complicaciones del embarazo
- Neoplasias por tipo histológico
- Neoplasias Glandulares y Epiteliales
- Neoplasias Urológicas
- Carcinoma
- Enfermedades de la vejiga urinaria
- Neoplasias vesicales sin invasión muscular
- Neoplasias de la vejiga urinaria
- Carcinoma De Células De Transición
Otros números de identificación del estudio
- 970903
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
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