By S. Saini, G.D. Rubin, M.K. Kalra
Computed tomography (CT) is the main swiftly evolving clinical imaging know-how. This ebook describes present exam recommendations and complex medical functions of state of the art multidetector computed tomography (MDCT) scanners in chapters contributed by way of a number of special radiologists and clinicians. every one bankruptcy is written from a realistic point of view, in order that radiologists, citizens, clinical physicists, and radiology technologists can receive correct information regarding MDCT functions in neuroradiology, cardiac imaging, chest, stomach, and musculoskeletal radiology subspecialties. every one co-author offers pertinent illustrations and tables for larger realizing of present and complicated purposes of MDCT scanners. Readers will enjoy the event those authors describe in chapters on MDCT know-how, distinction management innovations, distinction hostile results and their administration, and complicated purposes of MDCT.
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Extra info for MDCT A Practical Approach
Sample text
J Comput Assist Tomogr 24:212–218 66. Murakami T, Kim T, Takamura M et al (2001). Hypervascular hepatocellular carcinoma: detection with double arterial phase multi-detector row helical CT. Radiology 218:763–767 67. Kanematsu M, Goshima S, Kondo H et al (2005) Optimizing scan delays of fixed duration contrast injection in contrast-enhanced biphasic multidetector-row CT for the liver and the detection of hypervascular hepatocellular carcinoma. J Comput Assist Tomogr 29:195–201 68. Lim JH, Choi D, Kim SH et al (2002) Detection of hepatocellular carcinoma: value of adding delayed phase imaging to dual-phase helical CT.
In practical terms, this means that patients should drink liberally the night before a contrast study or receive intravenous fluids starting the night before if they are high risk. The ideal combination of water and electrolytes is not known and may be patient specific. Correcting known extracellular volume depletion with saline, holding diuretics for 12 h, and encouraging oral water intake will suffice for most patients [1]. In situations that do not permit corrective measures beginning the evening before contrast exposure, a single-center trial found that an isotonic sodium bicarbonate solution (three ampules of NaHCO3 in 1,000 ml D5W) significantly reduced the incidence of CIN in high-risk patients receiving intra-arterial CM.
Prediction with a computer model. Radiology 207:647–655 Berland LL, Lee JY (1988) Comparison of contrast media injection rates and volumes for hepatic dynamic incremented computed tomography. Investigative Radiology 23:918–922 Small WC, Nelson RC, Bernardino ME, Brummer LT (1994) Contrast-enhanced spiral CT of the liver: effect of different amounts and injection rates of contrast material on early contrast enhancement. AJR Am J Roentgenol 163:87–92 Freeny PC, Gardner JC, von Ingersleben G et al (1995) Hepatic helical CT: effect of reduction of iodine dose of intravenous contrast material on hepatic contrast enhancement.