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A fiducial marker or fiducial is an object placed in the field of view of an image for use as a point of reference or a measure. It may be either something placed into or on the imaging subject, or a mark or set of marks in the reticle of an optical instrument.
A Réseau plate is a transparent sheet of glass or plastic engraved with a grid of crosshatches called fiducial markers. It was commonly used in film cameras (before the advent of digital cameras) for scientific and technical photography. The plate is placed at the focal plane of the camera just in front of the film. When the frame is exposed ...
Fiducial cross section, in particle physics experiments, a cross section for the subset of a process in which the distinctive process signatures are visible within the sensitive regions of the detector volume. The definition now commonly means a cross section with kinematic and other selection cuts consistent with the sensitive detector ...
Fiducial markers for guiding radiation therapy are often tattooed in dark ink, and ultraviolet tattoos have been studied as an alternative to minimize impact on patient body image. [ 8 ] [ 9 ] To support detection and treatment of potential skin cancer , the site of a biopsy can be marked with a UV tattoo to ensure correct identification of ...
Tattoos have been used as fiducial markers as an aid in guiding radiotherapy. [19] Typically these markers are tattooed in dark permanent ink, but ultraviolet tattoos, which are mostly invisible under normal light, have been studied as an alternative to minimize impact on patient body image.
Fiducial marker; Flat-panel detector; Fluorescence image-guided surgery; Focus assessed transthoracic echocardiography; Fractional anisotropy; FUJIFILM VisualSonics; Functional imaging; Functional neuroimaging
The images may also be used to check for other requirements of some types of treatment, such as full or empty bladder, empty rectum, etc. [8] [27] The same cone beam beam source and detector can alternatively be used to take simple X-ray positioning images if the organ shows particularly well on X-ray or if Fiducial markers have been inserted ...
ARTag, a fiduciary marker system to support augmented reality Artoces of Iberia , a king of Georgia from 78 to 63 BC Tömöriin Artag , a Mongolian Olympic freestyle wrestler