Purpose: To reduce irregular respiratory motion-induced artifacts in free-breathing prospective navigator-triggered three-dimensional (3D) MR cholangiopancreatography (MRCP).
Materials And Methods: A reference respiration model was estimated from the first-five respiration periods during the initial navigator scan. With the navigator information acquired before and after triggering, the un-acquired diaphragm position during the actual imaging was interpolated using the amplitude-scaled reference model. Craniocaudal translational motion during imaging was retrospectively corrected using the estimated diaphragm position. T2-weighted 3D MRCP data were acquired from 17 healthy volunteers. For quantitative analysis, contrast-to-noise ratio (CNR) and relative contrast (RC) of the biliary tree and gallbladder were compared using the paired t-test.
Results: The CNR and RC of the biliary tree and gallbladder were significantly higher (P < 0.05) in the maximum intensity projection images after motion compensation.
Conclusion: The proposed algorithm can be an effective tool to reduce the irregular respiratory motion-induced artifacts in 3D MRCP imaging.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/jmri.22307 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
What drives farmers' behavior under climate change? Decoding risk awareness, perceived impacts, and adaptive capacity in northern Italy.
Heliyon
January 2025
Environmental Intelligence for Global Change Lab, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Via Ponzio 34/5, 20133, Milan, Italy.
Understanding climate change in a precise and timely manner may assist in gauging the occurrence and seriousness of its impacts, thereby boosting the adaptive capacity and responsiveness of farmers. This investigation looks into farmers' knowledge of climate change, their perception of risks and impacts, and the strategies they anticipate to tackle the challenges of adaptation. A well-structured online survey covering risk awareness, perception, and adaptation was used to randomly sample 460 respondents from 12 irrigation districts in northern Italy.
View Article and Find Full Text PDFComprehensive characterization of tobacco-induced changes in enamel surface topography.
J Oral Biol Craniofac Res
December 2024
Department of Oral Biology and Oral Pathology, Saveetha Dental College and Hopsitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600077, India.
Introduction: Enamel translucency, essential for the aesthetic appeal of teeth, is primarily determined by its thickness, quality, and refractive index. Several factors, including age, genetics, diet, oral hygiene practices, fluoride exposure, and acidic challenges, can influence enamel translucency. Tobacco use, in particular, leads to significant alterations in enamel appearance by penetrating its micropores, causing yellowing and browning.
View Article and Find Full Text PDFApplication of suture-stretching technique in repairing skin defect of lower limb.
J Orthop Surg Res
January 2025
Guizhou Medical University, Beijing Jishuitan Hospital Guizhou Hospital, Guiyang, Guizhou, People's Republic of China.
Background: Wound repair methods are commonly used in clinical practice, such as skin graft and flap repair, which can cause secondary injuries, and high costs. Many methods for skin stretching and repair have been reported domestically and internationally. However, their clinical use is limited owing to lack of equipment, complexity, and high costs.
View Article and Find Full Text PDFEffect of fermentation duration on microstructure and quality of acha flour and its cookies acceptability.
NPJ Sci Food
January 2025
Department of Family and Consumer Science, New Mexico State University, Las Cruces, NM, USA.
This study investigated the effect of fermentation durations (24,48 and 72 h) on the microstructure and nutritional quality of acha flour and resultant cookies. Results showed that there were significant differences (p < 0.05) in the functional and pasting properties of the flour and cookies samples.
View Article and Find Full Text PDFPhoto-curing hyaluronic acid-Janus antibacterial packs as O generator precisely modulate the infectious microenvironment for antibiotic-free periodontal therapy.
Mater Today Bio
February 2025
School of Pharmaceutical Sciences, Sun Yat-Sen University, University Town, Guangzhou, 510006, China.
Periodontal disease stands the leading cause of tooth loss in adults. While scaling and root planning is considered the "gold standard" treatment, it is often insufficient in efficiently eliminating anaerobic bacteria from deep periodontal pockets. In this work, an antibiotic-free and photo-curing hyaluronic acid-Janus (H-Janus) antibacterial pack was developed to inhibit the growth and colonization of residual bacteria within the pockets for reducing the recurrence of periodontitis.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!