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Clinical Application of a Low-Dose CBCT AI Model

27. september 2026 opdateret af: Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

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.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

1380

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Kina
    • Anhui
      • Hefei, Anhui, Kina
        • Rekruttering
        • The First Affiliated Hospital of University of Science and Technology of China
        • Kontakt:
    • Hubei
      • Wuhan, Hubei, Kina, 430022
        • Rekruttering
        • Wuhan Union Hospital
        • Kontakt:
      • Wuhan, Hubei, Kina, 430022
        • Rekruttering
        • Wuhan Union West Hospital
        • Kontakt:
      • Wuhan, Hubei, Kina, 430022
        • Rekruttering
        • Wuhan Union Jinyin Lake Hospital
        • Kontakt:
    • Jiangsu
      • Nanjing, Jiangsu, Kina
        • Rekruttering
        • Zhongda Hospital, Medical School, Southeast University
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Age ≥18 years.

    • 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.

Exclusion Criteria:

  • History of high-dose radiation exams or treatments.

    • Known allergies or severe adverse reactions to iodine contrast agents or other relevant medications.

      • Pregnant or breastfeeding women.

        • Severe comorbidities or chronic diseases (e.g., severe diabetes, renal insufficiency).

          • 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.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: 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).
Andet: DeepPriorCBCT-V2

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
Placebo komparator: 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).
Enhed: Clinical standard protocol (Full-radiation-dose CBCT)

Interventional procedures were performed under the guidance of clinical standard protocol (Full-radiation-dose CBCT).

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Radiation dose
Tidsramme: 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.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Operation time
Tidsramme: Through study completion, an average of 5 months.

The time from the initiation to the completion of the interventional procedure.
Through study completion, an average of 5 months.
Intraoperative complications.
Tidsramme: Through study completion, an average of 5 months.

Procedure-related intraprocedural complications.
Through study completion, an average of 5 months.
Post operative complications
Tidsramme: Through study completion, an average of 5 months.

Procedure-related complications within 7 days after the interventional procedure.
Through study completion, an average of 5 months.

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Subjective scoring
Tidsramme: Through study completion, an average of 5 months.

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.

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. august 2026

Primær færdiggørelse (Anslået)

30. november 2026

Studieafslutning (Anslået)

31. december 2026

Datoer for studieregistrering

Først indsendt

21. september 2026

Først indsendt, der opfyldte QC-kriterier

27. september 2026

Først opslået (Faktiske)

29. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

29. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

27. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • DeepPriorCBCT-V2

Plan for individuelle deltagerdata (IPD)

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INGEN

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