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.
調査の概要
状態
研究の種類
入学 (推定)
連絡先と場所
研究連絡先
- 名前:Zhongbo Chen
- 電話番号:86+13777125910
- メール:leonczb@163.com
研究場所
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Hefei
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Hefei、Hefei、中国、230022
- Anhui Chest Hospital
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コンタクト:
- Fei Tang
- 電話番号:+86-13505696936
- メール:tangfei1205@163.com
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Huzhou
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Zhejiang、Huzhou、中国、313000
- Huzhou Central Hospital
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コンタクト:
- Jiayou Luo
- 電話番号:+86-13757071890
- メール:zhewenfu0647@163.com
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Jiaxing
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Zhejiang、Jiaxing、中国、314000
- The Second Hospital of Jiaxing
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コンタクト:
- Na Li
- 電話番号:+86-18858334316
- メール:doctorlina@126.com
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Jinhua
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Zhejiang、Jinhua、中国、321100
- Lanxi Hospital of Traditional Chinese Medicine
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コンタクト:
- Xin Shi
- 電話番号:+86-15356893371
- メール:121354634@qq.com
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Ningbo
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Zhejiang、Ningbo、中国、315000
- The First Affiliated Hospital of Ningbo University
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コンタクト:
- ZHongbo Chen
- 電話番号:+86-13777125910
- メール:leonczb@163.com
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Shanghai Municipality
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Shanghai、Shanghai Municipality、中国、200030
- Shanghai Chest Hospital
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コンタクト:
- Ying Li
- 電話番号:+86-15821959854
- メール:myliying@123.com
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Zhoushan
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Zhejiang、Zhoushan、中国、316000
- Zhoushan Hospital
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コンタクト:
- Haifeng Li
- 電話番号:+86-13666589830
- メール:1770182534@qq.com
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参加基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
サンプリング方法
調査対象母集団
説明
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.
研究計画
研究はどのように設計されていますか?
デザインの詳細
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Proportion of post-biopsy bronchoscopic fields judged suitable for direct procedural continuation
時間枠: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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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Visual distinguishability score between the bleeding area and surrounding blood-covered background
時間枠: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
時間枠: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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その他の成果指標
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Proportion of bronchoscopic fields judged suitable for procedural continuation after one field-clearing intervention
時間枠: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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協力者と研究者
研究記録日
主要日程の研究
研究開始 (推定)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。