Clinical Application of a Low-Dose CBCT AI Model
Low-dose AI-reconstructed CBCT Versus Full-dose CBCT for Guidance of Interventional Procedures: a Multicenter Randomized Controlled Trial
Cone Beam CT (CBCT) is an imaging modality used in interventional digital subtraction angiography (DSA). It produces three-dimensional images via cone-beam X-ray scanning and computer reconstruction. Clinically, CBCT guides puncture for pulmonary and hepatic lesions and evaluates post-intervention outcomes in liver cancer and cerebrovascular diseases. However, CBCT-guided interventions carry high patient radiation exposure; dose reduction often degrades image quality and impairs procedural results. Studies report that each 100 mGy radiation increment elevates cancer risk by 1.96-fold.
Artificial intelligence enables low-dose CBCT. Our prior DeepPriorCBCT model embedded anatomical priors using neural discrete representation learning, reducing thoracic CBCT dose to one-sixth of routine protocols while preserving image quality. We further developed DeepPriorCBCT-V2 using 55 000 pre-reconstruction CBCT datasets covering brain, thorax and abdomen. This multi-organ model maintains image quality at one-sixth standard radiation dose. Nevertheless, its real-world clinical performance remains unvalidated. We therefore designed this prospective multicenter randomized controlled trial to evaluate the clinical applicability of DeepPriorCBCT-V2.
調査の概要
状態
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前：Lei Chen
- 電話番号：15971480677
- メール：chan0812@126.com
研究場所
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Anhui
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Hefei、Anhui、中国
- 募集
- The First Affiliated Hospital of University of Science and Technology of China
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コンタクト：
- Tao Sun
- 電話番号：18064075705
- メール：1393879727@qq.com
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Hubei
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Wuhan、Hubei、中国、430022
- 募集
- Wuhan Union Hospital
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コンタクト：
- Lei Chen
- 電話番号：15971480677
- メール：chan0812@126.com
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Wuhan、Hubei、中国、430022
- 募集
- Wuhan Union West Hospital
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コンタクト：
- Lei Chen
- 電話番号：15971480677
- メール：chan0812@126.com
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Wuhan、Hubei、中国、430022
- 募集
- Wuhan Union Jinyin Lake Hospital
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コンタクト：
- Lei Chen
- 電話番号：15971480677
- メール：chan0812@126.com
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Jiangsu
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Nanjing、Jiangsu、中国
- 募集
- Zhongda Hospital, Medical School, Southeast University
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コンタクト：
- Jian Lu
- 電話番号：15850654644
- メール：lujian43307131@126.com
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
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Age ≥18 years.
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Requires CBCT-guided interventional treatment or surgery (e.g., cerebral angiography, lung puncture biopsy, hepatic artery chemoembolization, or percutaneous liver biopsy) and meets operational indications.
- Can understand the study's purpose, procedures, potential risks, and benefits, and voluntarily signs a written informed consent form.
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Exclusion Criteria:
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History of high-dose radiation exams or treatments.
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Known allergies or severe adverse reactions to iodine contrast agents or other relevant medications.
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Pregnant or breastfeeding women.
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Severe comorbidities or chronic diseases (e.g., severe diabetes, renal insufficiency).
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Severe mental illness or cognitive impairment preventing understanding of the study procedures or providing informed consent.
⑥ Participants are not suitable for the trial per investigator's opinion.
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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
- 主な目的：防止
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：トリプル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的：Participants will receive interventional procedures guided by DeepPriorCBCT-V2.
Patients underwent interventional procedures guided by CBCT images reconstructed via the DeepPriorCBCT-V2 model from low-radiation-dose scans (1/6 of the conventional dose for the thorax and abdomen, and 1/5 for the brain). |
Compared with conventional CBCT-guided interventional procedures and previously reported low-dose CBCT studies, the intervention adopted in the present study has several distinct advantages. First, most existing low-dose CBCT protocols only reduce radiation for a single anatomical region, mainly the thorax, while our DeepPriorCBCT-V2 model achieves stable low-dose reconstruction for the brain, thorax, and abdomen simultaneously, with radiation reduced to 1/6 of the standard clinical level for the thorax and abdomen and 1/5 for the brain. Second, unlike general noise-reduction algorithms used in previous studies, our model embeds anatomical prior information through neural discrete representation learning, which ensures consistent and reliable image quality at extremely low radiation doses without sacrificing intraoperative guidance accuracy. Third, this study is the first prospective multicenter randomized controlled trial to systematically verify the clinical feasibility of multi-orga |
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プラセボコンパレーター：Participants will receive interventional procedures guided by clinical standard protocol.
Patients underwent interventional procedures guided by CBCT images reconstructed via clinical standard protocol (full-radiation-dose). |
Interventional procedures were performed under the guidance of clinical standard protocol (Full-radiation-dose CBCT). |
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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Radiation dose
時間枠：Through study completion, an average of 5 months.
|
Air Kerma (AK) refers to the sum of the initial kinetic energies transferred from uncharged ionizing radiation (such as X-ray photons) to charged particles in air, divided by the mass of air at that location. |
Through study completion, an average of 5 months.
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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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Operation time
時間枠：Through study completion, an average of 5 months.
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The time from the initiation to the completion of the interventional procedure. |
Through study completion, an average of 5 months.
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Intraoperative complications.
時間枠：Through study completion, an average of 5 months.
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Procedure-related intraprocedural complications. |
Through study completion, an average of 5 months.
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Post operative complications
時間枠：Through study completion, an average of 5 months.
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Procedure-related complications within 7 days after the interventional procedure. |
Through study completion, an average of 5 months.
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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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Subjective scoring
時間枠：Through study completion, an average of 5 months.
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Scoring of reconstructed CBCT images was performed by radiologists and interventional physicians using a 5-point Likert scale. The scale was defined as: 1 = very poor image quality; lesions cannot be assessed and the procedure cannot be guided; 2 = poor image quality; lesion assessment and procedure guidance are difficult; 3 = moderate image quality; lesion assessment is relatively difficult, but procedure guidance is feasible; 4 = good image quality; lesions can be assessed and procedure guidance is achievable; 5 = excellent image quality; lesion assessment is not compromised at all and procedure guidance is fully supported. |
Through study completion, an average of 5 months.
|
協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
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
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