Purpose: Purpose:There are a variety of commercially made ultrasound training phantoms available for educational purposes. A new concept in phantoms is presented that utilises a low-cost method to create a reusable phantom.
Methods: A closed electric circuit was combined with insulating material to create a novel phantom that can be used to practise needle tracking under ultrasound guidance on repeated occasions. A tricolour light-emitting diode (LED) illuminates when the needle (under ultrasound gudiance) contacts one of three metal objects embedded in the phatom material.
Conclusion: This prototype model provides a simple solution for trianing ultrasound needle guidance is particularly geared towards programmes with a high volume of users. This protoype provides a starting point for a new concept in educational phantom trainers.
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http://dx.doi.org/10.1002/ajum.12367 | DOI Listing |
Phys Med Biol
January 2025
Tianjin University, Centre for advanced Mechanisms and Robotics, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin, China., Tianjin, 300072, CHINA.
This study proposes a real-time tumor position prediction-based multi-dimensional respiratory motion compensation puncture method to accurately track real-time lung tumors and achieve precise needle puncture. Approach: A hybrid model framework integrating prediction and correlation models is developed to enable real-time tumor localization. A Long Short-Term Memory neural network with bidirectional and attention modules (Bi-LSTM-ATT) is employed for predicting external respiratory signals.
View Article and Find Full Text PDFTransl Vis Sci Technol
December 2024
Department of Biomedical Engineering, University of Houston, Houston, TX, USA.
Purpose: To assess the safety of acoustic radiation force optical coherence elastography in the crystalline lens in situ.
Methods: Acoustic radiation force (ARF) produced by an immersion single-element ultrasound transducer (nominal frequency = 3.5 MHz) was characterized using a needle hydrophone and used for optical coherence elastography (OCE) of the crystalline lens.
BJUI Compass
December 2024
Department of Urology, Jules Bordet Institute, Hôpital Universitaire de Bruxelles Université Libre de Bruxelles Brussels Belgium.
Objective: The aim of this study was to assess the precision and safety of targeted microwave ablation (TMA) using organ-based tracking (OBT) fusion, in patients with intermediate risk prostate cancer.
Patients And Method: We conducted a prospective, multicentric trial. Eligible patients had a prostate-specific antigen (PSA) < 20 ng/mL, a magnetic resonance imaging (MRI)-visible index tumour of Gleason score 3 + 4, with largest axis ≤15 mm and distant of at least 5 mm from the rectum and apex.
Front Mol Neurosci
December 2024
Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan.
The accumulation of a disease-specific isoform of prion protein (PrP) and histopathological lesions, such as neuronal loss, are unevenly distributed in the brains of humans and animals affected with prion diseases. This distribution varies depending on the diseases and/or the combinations of prion strain and experimental animal. The brain region-dependent distribution of PrP and neuropathological lesions suggests a neuronal cell-type-dependent prion propagation and vulnerability to prion infection.
View Article and Find Full Text PDFAm J Vet Res
December 2024
College of Veterinary Medicine, Veterinary Teaching Hospital, Oregon State University, Corvallis, OR.
Objective: To evaluate the precision and accuracy of 3 common methods (method 1, actual draws of the volume remaining; method 2, weight tracking of the volume remaining and/or the volume removed; and method 3, discrepancy percentage at the end of each vial) for monitoring volumes in vials of injectable controlled drugs.
Methods: For methods 1 and 2, doses were drawn from a vial containing a known amount of sterile water. For method 1, after each dose was removed, the remaining quantity of liquid was withdrawn, measured, and reinjected into the vial.
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