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Optimal Planning Target Volume Margins to Account for Intra-Fractional Prostate Motion Relative to Treatment Duration: A Study Using Real-Time Transperineal Ultrasound Guidance.
J Med Imaging Radiat Oncol
January 2025
Department of Radiation Oncology, Townsville University Hospital, Townsville, Queensland, Australia.
Introduction: Prostate motion during external beam radiotherapy (EBRT) is common and typically managed using fiducial markers and cone beam CT (CBCT) scans for inter-fractional motion correction. However, real-time intra-fractional motion management is less commonly implemented. This study evaluated the extent of intra-fractional prostate motion using transperineal ultrasound (TPUS) and examined the impact of treatment time on prostate motion.
View Article and Find Full Text PDFValue of transperineal three-dimensional ultrasonography in diagnosis of pelvic floor dysfunction.
Br J Radiol
November 2024
Department of Ultrasound, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310005, China.
Objectives: To investigate the correlation between 3-dimensional ultrasonography parameters and pelvic floor dysfunction (PFD) and its application value in diagnosis and treatment.
Methods: Ninety-two patients with PFD and 22 without who underwent 3-dimensional ultrasonography were selected. Transperineal 3-dimensional ultrasonography was performed by Voluson E8 colour Doppler ultrasonography to analyse the anteroposterior diameter (LHAD), transverse diameter (LHLD), pelvic diaphragmatic hiatus area (LHA), and bladder neck mobility (BND) of the patients.
4D transperineal ultrasound: feedback for good obstetric anal sphincter injuries reparation.
J Ultrasound
December 2024
Obstetric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Massarenti 13, 40138, Bologna, Italy.
Background: Obstetric anal injury is the main risk factor for traumatic anal, faecal and flatus, incontinence in women in reproductive age. Its recognition and good reparation are crucial for long term outcomes.
Case Report: We report a case of a nulliparous woman who reported a fourth-degree perineal tear after delivery.
Design and evaluation of a pneumatic actuation unit for a wasp-inspired self-propelled needle.
PLoS One
July 2024
Faculty of Mechanical Engineering, Department of BioMechanical Engineering, Bio-Inspired Technology (BITE) Group, Delft University of Technology, Delft, The Netherlands.
Transperineal laser ablation is a minimally invasive thermo-ablative treatment for prostate cancer that requires the insertion of a needle for accurate optical fiber positioning. Needle insertion in soft tissues may cause tissue motion and deformation, resulting in tissue damage and needle positioning errors. In this study, we present a wasp-inspired self-propelled needle that uses pneumatic actuation to move forward with zero external push force, thus avoiding large tissue motion and deformation.
View Article and Find Full Text PDFThree-Dimensional Transperineal Ultrasound Assessment of the Anal Sphincter Immediately After Vaginal Birth: An Exploratory Study.
J Ultrasound Med
September 2024
Department of Development and Regeneration, Cluster Urogenital Surgery, Biomedical Sciences, KU Leuven, Leuven, Belgium.
Objectives: To assess the feasibility of acquiring adequate transperineal ultrasound (TPUS) volumes of the anal sphincter (AS) immediately after vaginal birth, the reproducibility of its measurements, and detecting defects therein.
Methods: Secondary analysis of TPUS volumes of the AS, acquired immediately after vaginal birth with a transversely oriented convex probe. Two independent experts ranked off-line image quality as "inadequate," "adequate," or "ideal" using the Point-of-Care Ultrasound Image Quality scale.
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