Related Experiment Video
Updated: Mar 12, 2026
Use of Electromagnetic Navigational Transthoracic Needle Aspiration E-TTNA for Sampling of Lung Nodules
Published on: May 23, 2015
Application of streak metal artifact reduction technique in cone-beam computed tomography guided percutaneous
1Department of Interventional Radiology, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610044, Sichuan Province, China.
Background:
Metallic artifacts from coaxial needles can severely interfere with the precision of cone-beam computed tomography (CBCT)-guided percutaneous transthoracic needle biopsy (PTNB), particularly in assessing vital anatomical structures around small lesions.
Aim:
To evaluate the clinical application of a streak metal artifact reduction technique (SMART) in CBCT-PTNB procedures.
Methods:
We retrospectively analyzed data from 68 patients (73 CBCT scans) undergoing CBCT-guided PTNB between March 2023 and December 2024. Image quality was compared among original reconstructed CBCT images, those iteratively reconstructed using SMART with a full volume of interest (VOI) (SMART-Full), and those with a small VOI containing only the coaxial needle (SMART-Small). Evaluations focused on artifact types, puncture needle diameter measurements, and density metrics within the region of interest (ROI).
Results:
SMART-Full reconstruction significantly reduced radial, streak, and dark stripe artifacts (P < 0.001) compared to original CBCT, with superior performance in puncture needle diameter measurement and ROI minimum and average density indicators (P < 0.001). The incidence of dark streak artifacts decreased from 71 cases in original CBCT to 26 cases in SMART-Full. Additionally, SMART-Full was more effective than SMART-Small in artifact elimination (P < 0.001).
Conclusion:
SMART technology effectively reduces metal artifacts, enabling clearer visualization of hidden anatomical structures. Through quantitative analysis, this study confirms the clinical value of SMART in CBCT-guided PTNB, providing a technical reference for precise diagnosis and treatment of small pulmonary lesions.
More Related Videos
09:49Dual-phase Cone-beam Computed Tomography to See, Reach, and Treat Hepatocellular Carcinoma during Drug-eluting Beads Transarterial Chemo-embolization
Published on: December 2, 2013
05:35Transperineal Prostate Biopsy Using a Cone-shaped Double-hole Method with Dual-plane Probe Guidance
Published on: June 6, 2025
