Visualization support for the planning of hepatic needle placement.

摘要: Percutaneous image-guided interventions, such as radiofrequency ablation or biopsy, are using needle-shaped instruments which have to be inserted into a target area without penetrating any vital structure. The established planning workflow is based on viewing 2D slices of pre-interventional CT MR scan. However, access paths not parallel the axial plane often necessary. For complicated cases, process challenging and time consuming if solely slices. To overcome these limitations while keeping well-established workflow, we propose visualization method that highlights less suited directly in visualizations with radiologist familiar. Based user defined point segmentation masks relevant risk structures, structure map computed GPU accelerated volume rendering projected onto This supports defining safe linear by selecting second image In an evaluation for 20 liver 3 experienced radiologists stated 55% cases supported path choice. support was rated average mark 2.2. 2 radiologists, significant reduction duration 54 50% observed. proposed approach can both accelerate facilitate differentiation between safer paths.