A transcutaneous bone digitizer for minimally invasive registration in orthopedics: a real-time focused ultrasound beam approach

Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery
Chris MoulderL P Nolte

Abstract

Computer-guided navigation of surgical tool position in computer-assisted orthopedic systems requires the registration of computer tomographic (CT) images with underlying bone. This process is presently performed by manually digitizing points on bone with a pointer and aligning them to a preoperative CT scan. We propose the use of ultrasound to obtain points on bone transcutaneously. A custom-made A-mode probe features a modular lens focusing system and a one-step calibration method. A stable and precise echo detection algorithm is also implemented. The accuracies of three signal detection algorithms--standard deviation, cross-correlation (XCORR) and short-time Fourier transform--were compared using a known reflected signal. XCORR showed the most accurate and stable operation. To test our method of obtaining bone surface points, a plastic model of the fourth human lumbar vertebra was CT scanned and then immersed in a water bath. Six surface registrations of the vertebra using an accurate pointing device were compared to ten registrations obtained using the US probe (using the XCORR algorithm). Student's T-test showed no significant difference in error between the two methods, proving that ultrasound registration, using our meth...Continue Reading

References

Jun 1, 1988·The Journal of Pharmacy and Pharmacology·R J BarrettA G Proakis
Mar 1, 1995·Computers in Biology and Medicine·S LavalléeJ Troccaz
Jul 1, 1994·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·J W TrobaughR D Bucholz

❮ Previous
Next ❯

Citations

Jun 1, 2007·Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery·Stefan HegerKlaus Radermacher
Feb 15, 2008·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·P KilianS Lavallée
Jul 11, 2006·Physics in Medicine and Biology·Terry M Peters
Jul 16, 2020·Medical Image Analysis·Houssem-Eddine GueziriD Louis Collins

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery
Haydar TalibMiguel A González Ballester
Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
M OszwaldT Hüfner
International Journal of Computer Assisted Radiology and Surgery
Lorenz FietenStefan Heger
Biomedizinische Technik. Biomedical Engineering
Stefan HegerKlaus Radermacher
© 2022 Meta ULC. All rights reserved