SU-E-J-163: Video-Based Patient Motion Detection during the Treatment Delivery

Medical Physics
Q GautierSteve B Jiang

Abstract

During the treatment, a patient is continuously monitored by video cameras. The therapists are supposedly to watch the monitors and interrupt the treatment if any significant patient motion is spotted. Unfortunately, patient motion can easily be overlooked with this manual approach, especially when there are many other monitors in the control console area. Motion detection algorithms can help to prevent this situation by alerting therapists if a significant motion is detected. We propose a method based on matrix decomposition into low rank and sparse matrices to separate background and moving objects from a video camera. The matrix is formed with image frames of the video and after decomposition, the low rank component represents the background and the sparse component is used to identify moving subjects in the video. The matrix decomposition is performed by solving a convex optimization problem via an efficient alternating direction method. Combining prior knowledge about the motion of treatment machines, our method can reliably extract the actual patient motion from the machine motion and background changes. We tested the algorithm using videos obtained from a volunteer lying on the treatment couch under the linac. We managed...Continue Reading

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

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
Chinh T Dang, Hayder Radha
IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
Duc-Son PhamSvetha Venkatesh
IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
Junxia LiDeepu Rajan
© 2022 Meta ULC. All rights reserved