- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07653945
Red Dichromatic Imaging for Improving Post-Biopsy Bronchoscopic Field Visibility
The goal of this observational study is to learn whether red dichromatic imaging (RDI) can help doctors see the bronchoscopic field more clearly after a biopsy. The study will include adults who need a bronchoscopic biopsy because doctors can see an abnormal area inside the airway.During a bronchoscopic biopsy, bleeding can happen after tissue is taken. Blood may cover the biopsy area and make it harder for doctors to see where to continue the procedure.
RDI is an imaging mode that uses special colors of light to help show blood-covered areas more clearly.The main question this study aims to answer is:Does RDI improve visibility of the bronchoscopic field after bleeding caused by bronchoscopic biopsy? Researchers will compare images taken with standard white light imaging and RDI during the same bronchoscopy procedure. Both types of images will be taken after the first biopsy and before any field-clearing treatment is done.
Participants will have bronchoscopic biopsy as part of their regular medical care, have images taken using standard white light imaging and RDI during the same procedure, have routine follow-up for possible medical problems after bronchoscopy. Taking part in this study will not add extra biopsies or change the participant's regular medical care.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Zhongbo Chen
- Numéro de téléphone: 86+13777125910
- E-mail: leonczb@163.com
Lieux d'étude
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Hefei
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Hefei, Hefei, Chine, 230022
- Anhui Chest Hospital
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Contact:
- Fei Tang
- Numéro de téléphone: +86-13505696936
- E-mail: tangfei1205@163.com
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Huzhou
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Zhejiang, Huzhou, Chine, 313000
- Huzhou Central Hospital
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Contact:
- Jiayou Luo
- Numéro de téléphone: +86-13757071890
- E-mail: zhewenfu0647@163.com
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Jiaxing
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Zhejiang, Jiaxing, Chine, 314000
- The Second Hospital of Jiaxing
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Contact:
- Na Li
- Numéro de téléphone: +86-18858334316
- E-mail: doctorlina@126.com
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Jinhua
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Zhejiang, Jinhua, Chine, 321100
- Lanxi Hospital of Traditional Chinese Medicine
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Contact:
- Xin Shi
- Numéro de téléphone: +86-15356893371
- E-mail: 121354634@qq.com
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Ningbo
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Zhejiang, Ningbo, Chine, 315000
- The First Affiliated Hospital of Ningbo University
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Contact:
- ZHongbo Chen
- Numéro de téléphone: +86-13777125910
- E-mail: leonczb@163.com
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Shanghai Municipality
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Shanghai, Shanghai Municipality, Chine, 200030
- Shanghai Chest Hospital
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Contact:
- Ying Li
- Numéro de téléphone: +86-15821959854
- E-mail: myliying@123.com
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Zhoushan
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Zhejiang, Zhoushan, Chine, 316000
- Zhoushan Hospital
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Contact:
- Haifeng Li
- Numéro de téléphone: +86-13666589830
- E-mail: 1770182534@qq.com
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Age ≥18 years.
- Visible abnormal endobronchial lesion under bronchoscopy, including endobronchial neoplasm, mucosal abnormality, airway stenosis, or other lesion requiring biopsy to determine its nature.
- Provision of informed consent to participate in this clinical study and signing of the informed consent form.
Exclusion Criteria:
- Presence of contraindications to bronchoscopy, such as severe cardiopulmonary disease, coagulation dysfunction (including patients receiving anticoagulant therapy and/or anticoagulant drugs who have not discontinued these drugs for more than 5 days before the examination), poor tolerance of anesthesia, psychiatric disease, or severe neurosis.
- Intra-procedural decrease in SpO₂ or inability to tolerate bronchoscopy.
- Obvious airway bleeding observed during bronchoscopy that may increase the risk of worsening the patient's condition.
- Images that are obviously blurred or out of focus, or that contain severe reflection, bubbles, or instrument obstruction, making subsequent image analysis impossible.
- Inability to cooperate with the study for any reason, or any other condition that the investigator considers unsuitable for study participation.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Proportion of post-biopsy bronchoscopic fields judged suitable for direct procedural continuation
Délai: Periprocedural
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Paired white light imaging and red dichromatic imaging images will be assessed by independent evaluators.
A bronchoscopic field will be judged suitable for direct procedural continuation if the biopsy site, lesion surface, or lesion boundary remains identifiable and biopsy or subsequent bronchoscopic procedures can continue without additional field-clearing intervention.
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Periprocedural
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Visual distinguishability score between the bleeding area and surrounding blood-covered background
Délai: Periprocedural
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Paired white light imaging and red dichromatic imaging images will be assessed by independent evaluators.
The visual distinguishability between the biopsy-related bleeding area and the surrounding blood-covered background will be scored on a 4-point scale.
A score of 1 indicates that the two areas are almost indistinguishable, and a score of 4 indicates that the two areas are clearly distinguishable and easy to identify.
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Periprocedural
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Objective color difference between the bleeding area and surrounding blood-covered background
Délai: Periprocedural
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Objective color difference will be measured using paired white light imaging and red dichromatic imaging images.
Regions of interest will be selected from the biopsy-related bleeding area and the surrounding blood-covered background.
Color parameters will be measured in the CIE 1976 L*a*b* color space, and the overall color difference will be calculated as ΔE.
Differences in the L*, a*, and b* channels may also be analyzed.
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Periprocedural
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Autres mesures de résultats
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Proportion of bronchoscopic fields judged suitable for procedural continuation after one field-clearing intervention
Délai: Periprocedural
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Among cases in which both white light imaging and red dichromatic imaging are initially judged unsuitable for direct procedural continuation, one field-clearing intervention may be performed according to clinical need.
This may include suction, irrigation, cold saline, topical epinephrine, or other necessary measures.
After this intervention, paired white light imaging and red dichromatic imaging images will be assessed to determine whether the bronchoscopic field is suitable for continuation of biopsy or subsequent bronchoscopic procedures.
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Periprocedural
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Collaborateurs et enquêteurs
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 2026-R2021-01
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
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