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- W2189215169 abstract "Purpose: Ultrasound is prevalent in image-guided therapy as a safe, inexpensive, and widely available imaging modality. However, extensive training in interpreting ultrasound images is essential for successful procedures. An open-source ultrasound image simulator was developed to facilitate the training of ultrasound-guided spinal intervention procedures, thereby eliminating the need for an ultrasound machine from the phantom-based training environment. Methods: Anatomical structures and surgical tools are converted to surface meshes for data compression. Anatomical data is converted from segmented volumetric images, while the geometry of surgical tools is available as a surface mesh. The pose of the objects are either constants or live measurements from a pose tracking device. Intersection points between the surface models and the ultrasound scan lines are determined with a binary space partitioning tree. The scan lines are divided into segments and filled with grey values determined by an intensity calculation accounting for material properties, reflection, and attenuation parameters defined in a configuration file. The scan lines are then converted to a regular brightness-mode ultrasound image. Results: The simulator was tested in a tracked ultrasound imaging system, with a mock transducer tracked by an Ascension TrakStar electromagnetic tracker, on a spine phantom. A mesh model of the spine was created from CT. The simulated ultrasound images were generated at a speed" @default.
- W2189215169 created "2016-06-24" @default.
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- W2189215169 date "2013-07-24" @default.
- W2189215169 modified "2023-09-26" @default.
- W2189215169 title "Surface Mesh-Based Ultrasound Simulator For Spinal Interventions" @default.
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