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Patch-based techniques have been largely applied to process ultrasound (US) images, with applications in various fields as denoising, segmentation, and registration. An important aspect of the performance of these techniques is how to measure the similarity between patches. While it is usual to base the similarity on the Euclidean distance when processing images corrupted by additive Gaussian noise, finding measures suitable for the multiplicative nature of the speckle in US images is still an open research. In this work, we propose new stochastic distances based on the statistical characteristics of speckle in US. Additionally, we derive statistical measures to compose hypothesis tests that allow a quantitative decision on the patch similarity of US images. Good results with experiments in denoising, segmentation and selecting similar patches confirm the potential of the proposed measures.
This article was published in the following journal.
Name: Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society
Patch testing is the key diagnostic test for diagnosing allergic contact dermatitis, but there is limited information about the use of patch testing at the population level.
Speckle reduction remains a critical issue for ultrasound image processing and analysis. The nonlocal means (NLM) filter has recently attached much attention due to its competitive despeckling perform...
The reconstruction of a 3D model from cryo-electron microscopy (cryo-EM) 2D images is currently a mainstream technology for revealing the structure of biomacromolecules. In this structure solution pro...
It is discussed if routinely patch testing p-phenylenediamine (PPD) 1.0 % petrolatum is safe due to the risk of patch test sensitization. Late appearing patch test reactions may reflect patch test sen...
In this work we present a fast approach to perform registration of computed tomography to ultrasound volumes for image guided intervention applications. The method is based on a combination of block-m...
Hives affects 10-25% of the population worldwide at some time during their lifetime. Hives are itchy transient swellings of the skin lasting 4-36 hours. Chronic urticaria is defined as hiv...
This study evaluates the effectiveness of stochastic resonance electric stimulation on neuromuscular control and proprioception in healthy and individuals with stroke.
We are testing the efficacy of a new, FDA-approved bioinductive patch in lateral epicondylitis (tennis elbow) patients. A bioinductive patch is an implant that may foster tendon regrowth a...
This study is to assess the addition of 3D ultrasound guidance during standard care ablation or biopsies of liver or kidney tumours. 3D ultrasound only differs from conventional 2D ultraso...
The objective is to investigate the impact that faecal output has on adhesives.
An electrophysiologic technique for studying cells, cell membranes, and occasionally isolated organelles. All patch-clamp methods rely on a very high-resistance seal between a micropipette and a membrane; the seal is usually attained by gentle suction. The four most common variants include on-cell patch, inside-out patch, outside-out patch, and whole-cell clamp. Patch-clamp methods are commonly used to voltage clamp, that is control the voltage across the membrane and measure current flow, but current-clamp methods, in which the current is controlled and the voltage is measured, are also used.
A medicated adhesive patch placed on the skin to deliver a specific dose of medication into the bloodstream.
Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.
Skin tests in which the sensitizer is applied to a patch of cotton cloth or gauze held in place for approximately 48-72 hours. It is used for the elicitation of a contact hypersensitivity reaction.
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...