Dual-camera infrared guidance for computed tomography biopsy procedures

PhD Thesis


Shar, Bruce. 2017. Dual-camera infrared guidance for computed tomography biopsy procedures. PhD Thesis Doctor of Philosophy. University of Southern Queensland. https://doi.org/10.26192/5bf62f9ebc4a5
Title

Dual-camera infrared guidance for computed tomography biopsy procedures

TypePhD Thesis
Authors
AuthorShar, Bruce
SupervisorLeis, John
Institution of OriginUniversity of Southern Queensland
Qualification NameDoctor of Philosophy
Number of Pages119
Year2017
Digital Object Identifier (DOI)https://doi.org/10.26192/5bf62f9ebc4a5
Abstract

A CT-guided biopsy is a specialised surgical procedure whereby a needle is used to withdraw tissue or fluid specimen from a lesion of interest. The needle is guided while being viewed by a clinician on a computed tomography (CT) scan. CT guided biopsies invariably expose patients and operators to high dosage of radiation and are lengthy procedures where the lack of spatial referencing while guiding the needle along the required entry path
are some of the diffculties currently encountered. This research focuses on addressing two of the challenges clinicians currently face when performing CT-guided biopsy procedures.

The first challenge is the lack of spatial referencing during a biopsy procedure, with the requirement for improved accuracy and reduction in the number of repeated scans. In order to achieve this an infrared navigation system was designed and implemented where an existing approach was subsequently extended to help guide the clinician in advancing the biopsy needle. This extended algorithm computed a scaled estimate of the needle endpoint and assists with navigating the biopsy needle through a dedicated and custom built graphical user interface.

The second challenge was to design and implement a training environment where clinicians could practice different entry angles and scenarios. A prototype training module was designed and built to provide simulated biopsy procedures in order to help increase spatial referencing. Various experiments and different scenarios were designed and tested
to demonstrate the correctness of the algorithm and provide real-life simulated scenarios where the operators had a chance to practice different entry angles and familiarise themselves with the equipment. A comprehensive survey was also undertaken to investigate the advantages and disadvantages of the system.

Keywordscomputed tomography (CT) scan; biopsy
ANZSRC Field of Research 2020320226. Surgery
Byline AffiliationsFaculty of Health, Engineering and Sciences
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https://research.usq.edu.au/item/q45v5/dual-camera-infrared-guidance-for-computed-tomography-biopsy-procedures

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Related outputs

Real-Time 3D Mapping of Biopsy Fiducial Points using Two Infrared Cameras
Shar, Bruce and Leis, John. 2018. "Real-Time 3D Mapping of Biopsy Fiducial Points using Two Infrared Cameras." Billingsley, John and Brett, Peter (ed.) Mechatronics and Machine Vision in Practice 3. Switzerland. Springer. pp. 109-116
Infrared needle mapping to assist biopsy procedures and training
Shar, Bruce, Leis, John and Coucher, John. 2018. "Infrared needle mapping to assist biopsy procedures and training." Healthcare Technology Letters. 5 (2), pp. 65-69. https://doi.org/10.1049/htl.2017.0045