Needle Detection and Localization in Ultrasound Images based on Deep Learning

The technique of ultrasound-guided needle insertion is commonly employed in various clinical fields, including biopsy, anesthesia, brachytherapy, and ablation. However, the visibility of the needle in ultrasound (US) images remains a persistent challenge. To improve the guidance accuracy of needle insertion during interventions, it is crucial to...

The influence of rotation on the precision of needle end-point position in lateral direction for biopsy

Breast cancer is currently the most prevalent type of cancer. The concluding diagnosis can be obtained with an MRI-guided biopsy. However, due to respiratory movement and human error, the procedure can require multiple attempts, resulting in harmful consequences. To reach the target at the first attempt, the precision of the procedure should be...

Needle puncture forces in liver blood vessels: Towards vein implantation in a liver phantom

Treatment of liver diseases is often done by means of interventional radiology and thereby needles are widely used. These needles are under constant development and therefore needle-tissue interaction data are necessary. The goal of this study is to provide data on needle forces during puncturing of liver blood vessels. These data can be used to...

A breathing anthropomorphic liver phantom for interventional radiology: Design and evaluation

Liver cancer causes 700.000 deaths annually. To assess new devices and pre-clinical procedures for treatment, a safe test environment can be provided by a phantom. Phantoms act as a surrogate for certain physical properties of tissue. The purpose of this study is to design, construct and evaluate an anthropomorphic liver phantom, which simulates...

Percutaneous measurement of tissue compliance

Abstract—Percutaneous needle insertion is a minimally invasive technique, in which intervention effectiveness depends on needle placement accuracy. Targeting specific areas is difficult as needle trajectory is influenced by the highly variable and unpredictable nature of soft tissue. Furthermore the physician receives very limited information,...

Forces in needle interventions: Measuring tip forces

Accurate positioning of the needle tip during insertion is essential to ensure a maximum effect of the treatment. Target error is a problem and a lot research fields aim to improve needle insertions. The possibility to measure cutting force and stiffness force separately from friction forces supports the development of new types of needles,...

Epidural Needle Insertion Simulator: A device for training resident anaesthesiologists

Epidural anaesthesia is a pain relief technique commonly performed on patients in labor. It requires insertion of a needle into patients back into the epidural space of the spine and inject anaesthetic. It is a blind procedure and anaesthesiologists rely only on the forces felt during needle insertion to determine the position of the needle tip....