Abstract
One method for acquiring 4D thoracic CT scans is to use ciné acquisition. Ciné acquisition is conducted by rotating the gantry and acquiring x-ray projections while keeping the couch stationary. After a complete rotation, a single set of CT slices, the number corresponding to the number of CT detector rows, is produced. The rotation period is typically sub second so each image set corresponds to a single point in time. The ciné image acquisition is repeated for at least one breathing cycle to acquire images throughout the breathing cycle. Once the images are acquired at a single couch position, the couch is moved to the abutting position and the acquisition is repeated. Post-processing of the images sets typically resorts the sets into breathing phases, stacking images from a specific phase to produce a thoracic CT scan at that phase. Benefits of the ciné acquisition protocol include, the ability to precisely identify the phase with respect to the acquired image, the ability to resort images after reconstruction, and the ability to acquire images over arbitrarily long times and for arbitrarily many images (within dose constraints).
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References
Barrett, J.F., Keat, N.: Artifacts in CT: recognition and avoidance. Radiographics 24(6), 1679–1691 (2004)
Ehrhardt, J., Werner, R., Säring, D., Frenzel, T., Lu, W., Low, D., Handels, H.: An optical flow based method for improved reconstruction of 4D CT data sets acquired during free breathing. Med Phys 34(2), 711–721 (2007)
Ford, E.C., Mageras, G.S., Yorke, E., Ling, C.C.: Respiration-correlated spiral CT: a method of measuring respiratory-induced anatomic motion for radiation treatment planning. Med Phys 30(1), 88–97 (2003)
Langner, U.W., Keall, P.J.: Prospective displacement and velocity-based cine 4D CT. Med Phys 35(10), 4501–4512 (2008)
Low, D.A., Nystrom, M., Kalinin, E., Parikh, P., Dempsey, J.F., Bradley, J.D., Mutic, S., Wahab, S.H., Islam, T., Christensen, G., Politte, D.G., Whiting, B.R.: A method for the reconstruction of four-dimensional synchronized CT scans acquired during free breathing. Med Phys 30(6), 1254–1263 (2003)
Lu, W., Parikh, P.J., Hubenschmidt, J.P., Bradley, J.D., Low, D.A.: A comparison between amplitude sorting and phase-angle sorting using external respiratory measurements for 4D CT. Med Phys 33(8), 2964–2974 (2006)
Pan, T.: Comparison of helical and cine acquisitions for 4D-CTimaging with multislice ct. Med Phys 32(2), 627–34 (2005)
Pan, T., Lee, T.Y., Rietzel, E., Chen, G.T.Y.: 4D-CT imaging of a volume influenced by respiratory motion on multi-slice ct. Med Phys 31(2), 333–40 (2004)
Seppenwoolde, Y., Shirato, H., Kitamura, K., Shimizu, S., vanHerk, M., Lebesque, J.V., Miyasaka, K.: Precise and real-time measurement of 3D tumor motion in lung due to breathing and heartbeat, measured during radiotherapy. Int J Radiat Oncol Biol Phys 53(4), 822–834 (2002)
Underberg, R.W.M., Lagerwaard, F.J., Cuijpers, J.P., Slotman, B.J., van Sörnsen de Koste, J.R., Senan, S.: Four-dimensional CT scans for treatment planning in stereotactic radiotherapy for stage I lung cancer. Int J Radiat Oncol Biol Phys 60(4), 1283–1290 (2004)
Wijesekera, N.T., Duncan, M.K., Padley, S.P.G.: X-ray computed tomography of the heart. Br Med Bull 93, 49–67 (2010)
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Low, D. (2013). Acquiring 4D Thoracic CT Scans Using Ciné CT Acquisition. In: Ehrhardt, J., Lorenz, C. (eds) 4D Modeling and Estimation of Respiratory Motion for Radiation Therapy. Biological and Medical Physics, Biomedical Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36441-9_3
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DOI: https://doi.org/10.1007/978-3-642-36441-9_3
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