By Giorgio Ascenti, Angelo Vanzulli, Carlo Catalano, Rendon C. Nelson
This ebook offers a complete and updated evaluate of the continually evolving box of dual-energy CT (DECT). An introductory part provides details at the actual and technical historical past of DECT and considers nonspecific and particular software program merits. scientific purposes of DECT within the review of retroperitoneal viscera are then addressed intimately with the aid of top quality illustrations. specific recognition is dedicated to the newest DECT examine protocols, software program, and functions in aortic, renal, pancreatic, and adrenal disorder. a few case reports are mentioned that elucidate some great benefits of DECT, and the proper literature is generally mentioned. The ebook closes by means of contemplating radiation dose and dose-saving measures. the straightforward and useful process provided by means of this e-book will support radiologists within the optimum regimen use and interpretation of DECT in numerous retroperitoneal websites and radiology technologists within the number of settings and parameters.
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Extra resources for CT of the Retroperitoneum: From Conventional to Multi-energy Imaging
2013) Distinguishing enhancing from nonenhancing renal masses with dual-source dual-energy CT: iodine quantification versus standard enhancement 39 61. 62. 63. 64. 65. 66. measurements. 1007/s0030013-2811-4 Liu XL, Zhou JJ, Zeng MS et al (2013) Homogeneous high attenuation renal cysts and solid masses— differentiation with single phase dual energy computed tomography. Clin Radiol 68:198–205 Karlo C, Lauber A, Gotti RP et al (2011) Dualenergy CT with tin filter technology for the discrimination of renal lesion proxies containing blood, protein, and contrast-agent.
When a cystic renal mass contains material showing attenuation higher than simple fluid ([20 HU), one or more septa, calcifications, thickened walls or septa, or enhancing soft-tissue components, it cannot be considered a simple cyst. The Bosniak classification system has been used worldwide in evaluating cystic renal masses over the past 25 years. Cystic renal masses are classified into 5 groups based on CT findings: categories I, II, IIF, III, and IV [22, 24–26]. Category I masses are simple cysts and are always benign.
50. 51. 52. Renal Masses hardening effects on CT numbers. Radiology 213:468–472 Fornaro J, Leschka S, Hibbeln D et al (2011) Dualand multi-energy CT: approach to functional imaging. Insights imaging 2:149–159 Johnson TR, Krauss B, Sedlmair M et al (2007) Material differentiation by dual energy CT: initial experience. Eur Radiol 17:1510–1517 Petersilka M, Bruder H, Krauss B et al (2008) Technical principles of dual source CT. Eur J Radiol 68:362–368 Graser A, Johnson TR, Chandarana H et al (2009) Dual energy CT: preliminary observations and potential clinical applications in the abdomen.