+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Reduction of computed tomography metal artifacts due to the Fletcher-Suit applicator in gynecology patients receiving intracavitary brachytherapy

, : Reduction of computed tomography metal artifacts due to the Fletcher-Suit applicator in gynecology patients receiving intracavitary brachytherapy. BrachyTherapy 2(4): 207-214

To evaluate a method of reducing computed tomography (CT) metal artifacts due to the Fletcher-Suit applicator. We apply a projection-interpolation algorithm to CT images containing artifacts from the brachytherapy applicator. Regions of projection data containing the applicator are interpolated, removing the metal from the projections. A new image is then reconstructed, and a pixel-by-pixel correction factor applied to the original image to reduce the severity of metal artifacts. This technique is applied to phantom and patient image data. Qualitative and quantitative comparisons of images produced before and after projection-interpolation show a significant reduction in metal artifacts. In patient images containing the tandem alone, this method almost completely eliminated the artifact. In slices containing both tandem and colpostats, the algorithm reduced artifacts but did not completely eliminate them. The projection-interpolation method can be used to reduce the severity of metal artifacts caused by the Fletcher-Suit applicator.


PMID: 15062128

DOI: 10.1016/j.brachy.2003.08.001

Other references

Doffoël, M.; Wolf, P.; Portolani, N.; Vetter, D.; Boudjema, K.; Jaeck, D.; Poynard, T., 2000: Results and indications of liver transplantation in alcoholic cirrhosis. Gastroenterologie Clinique et Biologique 23(5 Pt 2): B56-B65

Chappell John, 2003: New determinations of the long-term production and migration of soil, our largest mineral deposit. Pages 65-69 2003

Betham, R.M., 1912: Wood snipe (Gallinago nemoricola) occurring near Bangalore. Journal of the Bombay Natural History Society, 21 677

Berton, G.; Cassatella, M.A.; Bellavite, P.; Rossi, F., 1986: Molecular basis of macrophage activation. Expression of the low potential cytochrome b and its reduction upon cell stimulation in activated macrophages. The expression of the novel b-type cytochrome, which is part of the superoxide anion (O2-)-generating system in phagocytes, has been investigated in population of mouse peritoneal macrophages heterogeneous in their capability to produce O2-). Redu...

Richards-Zawacki, C.L.; Wang, I.J.; Summers, K., 2012: Mate choice and the genetic basis for colour variation in a polymorphic dart frog: inferences from a wild pedigree. Understanding how reproductive barriers evolve during speciation remains an important question in evolution. Divergence in mating preferences may be a common first step in this process. The striking colour pattern diversity of strawberry dart frog...

Reuwer, P.J.; Gerritse, R.; Charbon, G.A.; Haspels, A.A., 1983: Dose-related effects of fenoterol and ritodrine in 10 peripheral vascular beds of the anesthetized dog. Dose-response curves of the uterine relaxants fenoterol and ritodrine were established for vascular conductance in 10 peripheral arterial beds in anesthetized dogs. Vascular sensitivity was expressed as (E)D50 of conductance response. Fenoterol in...

Dagnelie, J., 1956: Cylindromatous epithelioma of the palate; unilateral paralytic syndrome of the cranial nerves; hodotropic tumoral propagation along the medullar pia mater and the spinal roots and ganglia. Revue Belge de Pathologie et de Medecine Experimentale 25(3): 198-209

Dinkel, M.; Romstoeck, J.; Beese, U.; Loerler, H.; Langer, H., 1998: Intraoperative electrophysiological monitoring: Standards and controversies. The use of sophisticated neurophysiological monitoring not only allows identification of important spinal and cerebral structures but also assessment of all important CNS functions. For this reason electrophysiological monitoring has become a stan...

Stienstra, R.; Stefan, N., 2014: Tipping the inflammatory balance: inflammasome activation distinguishes metabolically unhealthy from healthy obesity. Expansion of adipose tissue mass, predominantly in the visceral depot, strongly associates with the development of metabolic complications that are often observed in obesity. In addition, in obesity, an increased prevalence of nonalcoholic fatty l...

Pospieszny, N.; Bruzewicz, S., 1997: Cervical part of the sympathetic trunk in the pig during prenatal period. Acta Biologica Cracoviensia Series Zoologia 39(SUPPL 1): 65