Abstract
This work presents development of an integrated ultrasound (US)–cone-beam CT (CBCT) system for image-guided needle interventions, combining a low-cost ultrasound system (Interson VC 7.5 MHz, Pleasanton, CA) with a mobile C-arm for fluoroscopy and CBCT via use of a surgical tracker. Imaging performance of the ultrasound system was characterized in terms of depth-dependent contrast-to-noise ratio (CNR) and spatial resolution. US–CBCT system was evaluated in phantom studies simulating three needle-based procedures: drug delivery, tumor ablation, and lumbar puncture. Low-cost ultrasound provided flexibility but exhibited modest CNR and spatial resolution that is likely limited to fairly superficial applications within a ∼10 cm depth of view. Needle tip localization demonstrated target registration error 2.1–3.0 mm using fiducial-based registration.
Original language | English (US) |
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Pages (from-to) | 13-22 |
Number of pages | 10 |
Journal | Computerized Medical Imaging and Graphics |
Volume | 58 |
DOIs | |
State | Published - Jun 1 2017 |
Keywords
- C-arm imaging
- Cone-beam CT
- Image-guided procedures
- Target registration error
- Ultrasound
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
- Computer Vision and Pattern Recognition
- Health Informatics
- Computer Graphics and Computer-Aided Design