The success of minimal-invasive surgeries employed in biopsy or ablation mainly depends on the accuracy of the needle placement at the target tumour. Conventional image-guided (CT, MRI or US), the free-hand technique involves multiple scans to be performed before placing the needle at the target. A CT guided, Needle Placement System (NPS) was developed by Demcon Advanced Mechatronics B.V. to aid the physician in placing the needle accurately at the target. However, while conducting tumour ablation, multiple insertions are required. To place multiple needles at the target, NPS requires additional scans to be performed. These extra scans expose the patient to unnecessary harmful radiation.
This thesis discusses the design and development of a needle-placement device to accurately place the needle at the tumour for clinical procedures like biopsy, ablation with the minimum number of scans during image-guided procedures.
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