4DCT

Lung motion in 4DCT

Four-dimensional computed tomography (4DCT) is a type of CT scanning which records multiple images over time. It allows playback of the scan as a video, so that physiological processes can be observed and internal movement can be tracked. The name is derived from the addition of time (as the fourth dimension) to traditional 3D computed tomography. Alternatively, the phase of a particular process, such as respiration, may be considered the fourth dimension.[1]

Fluoroscopy is a similar technique to 4DCT, however it refers to the introduction of a time element to 2D planar radiography, rather than to 3D CT.[2][3][4][5]

  1. ^ Cox, James D.; Chang, Joe Y.; Komaki, Ritsuko (2007). Image-Guided Radiotherapy of Lung Cancer. CRC Press. p. 85. ISBN 9780849387821.
  2. ^ Menze, Bjoern; Langs, Georg; Tu, Zhuowen; Criminisi, Antonio (2011). Medical Computer Vision: Recognition Techniques and Applications in Medical Imaging. Springer. p. 63. ISBN 9783642184215.
  3. ^ Stack, Brendan C. Jr.; Bodenner, Donald L. (2016). Medical and Surgical Treatment of Parathyroid Diseases: An Evidence-Based Approach. Springer. p. 152. ISBN 9783319267944.
  4. ^ Chin, Lawrence S.; Regine, William F. (2015). Principles and Practice of Stereotactic Radiosurgery. Springer. p. 191. ISBN 9781461483632. The ITV can be assessed with a 4D CT scan or fluoroscopy...
  5. ^ Jeremic, Branislav (2011). Advances in Radiation Oncology in Lung Cancer. Springer Science & Business Media. p. 160. ISBN 9783642199257.