To illustrate the basic principles of CT navigation assist (NAV) systems for accurate needle position on biopsy and ablation procedures. In this poster we will review the improvement on needle position using a NAV, independent from the experience of the operator. We will outline the advantages of using a CT NAV system and its impact on procedure time and radiation dose. We review the criteria for case selection, showing examples of difficult cases of adrenal gland, lung and liver procedures. The aim is improve the...

Percutaneous biopsies, drainages and ablations have become, one of the most commonly performed image-guided procedures in radiology practice. General radiologist face a refinement in imaging guidance, devices and techniques, but also previously inaccessible and difficult to target lesions requires now a percutaneous diagnostic and management. Traditional CT guided procedures require the radiologist judgment, skills and experience to determine needle entry, trying to avoid the placement of the devices through non-target organs. In practice, entry points permitting needle travel in the axial plane are preferred for...

At our Institution, we use a CT-guide navigation system (ActiViews CT-Guide™) for many of percutaneous ablations (RFA or microwave) and thoracic or abdominal biopsies. A 3D image, reformatted axial and sagittal view are used for planning the entry point and path of the needle. The CT-guide navigation system features three main components: 1) a single-use miniature camera that is easily clipped onto or off a standard interventional instruments, 2) a patented sterile registration patch with video and CT visible markers, and 3) proprietary and intuitive...

NAV systems can potentially reduce operator-dependence, complication rates, procedure times & patient radiation dose, while increasing confidence in needle placement accuracy, improving diagnostic yield of biopsies and permitting targeting of previously inaccessible or transiently visible lesions. NAV systems aid in entry point selection by projecting a virtual path on an image from a planning CT data set. Potential entry points can be compared for suitability and risk. Non-axial needle paths are easily planned, yielding a safe solution from skin to target. NAV systems register the...

T. Cabrera, J.M. Boucher, C. Torres, V. Demers, G. Artho, D.A. Valenti. Department of Radiology. McGill University Health Centre, Montreal, Canada. C. von Jako, MS in Nuclear Engineering (MIT) Mail to: [email protected]

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