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4D MR iaging using internal respiratory gating
ConferencePaper (Artikel, die in Tagungsbänden erschienen sind)
ID 69732
Author(s) Martin von Siebenthal,; Philippe Cattin,; Urs Gamper,; Antony Lomax,; Gabor Szekely,
Author(s) at UniBasel Cattin, Philippe Claude
Year 2005
Title 4D MR iaging using internal respiratory gating
Book title (Conference Proceedings) Medical Image Computing and Computer-Assisted Intervention – MICCAI 2005 : 8th International Conference, Palm Springs, CA, USA, October 26-29, 2005 ; proceedings
Volume Part 2, 336-343
Place of Conference Palm Springs, CA
Publisher Springer
Place of Publication Berlin
Pages 336-43
Keywords Medical -> Organ Motion -> Liver
Abstract Respiratory organ motion is a key problem in proton therapy and in many other treatments. This paper presents a novel retrospective gating method for 4D (dynamic 3D) MR imaging during free breathing to capture the full variability of respiratory organ deformation. In contrast to other imaging methods, a constant breathing depth or even strict periodicity are not assumed. 3D images of moving organs can be reconstructed for complete respiratory cycles by retrospective stacking of dynamic 2D images using internal image-based gating. Additional noise reduction by combining multiple images significantly increases the signal-to-noise ratio. The resulting image quality is comparable to breath-hold acquisitions. Although the method was developed for proton therapy planning, the new possibilities to study respiratory motion are valuable to improve other treatments and to assess gating techniques, which rely on stronger assumptions about the breathing pattern.
Full Text on edoc No
Digital Object Identifier DOI 10.1007/11566489_42
Document type (ISI) inproceedings
Additional Information Also published in: Lecture notes in computer science. - Berlin : Springer. - 3750 (2005), S. 336-343

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