Three energy computed tomography with synchrotron radiation

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Preliminary experiments for digital subtraction computed tomography (CT) at the K-edge of iodine (33.1 keV) were carried out at SMERF (Synchrotron Medical Research Facility X17B2) at the National Synchrotron Light Source, Brookhaven National Laboratory. The major goal was to evaluate the availability of this kind of imaging for in vivo neurological studies. Using the transvenous coronary angiography system, CT images of various samples and phantoms were taken simultaneously at two slightly different energies bracketing the K-absorption edge of iodine. The logarithmic subtraction of the two images resulted in the contrast enhancement of iodine filled structures. An additional CT image was ... continued below

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12 p.

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Menk, R.H.; Thomlinson, W.; Zhong, Z.; Charvet, A.M.; Arfelli, F. & Chapman, L. September 1, 1997.

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Preliminary experiments for digital subtraction computed tomography (CT) at the K-edge of iodine (33.1 keV) were carried out at SMERF (Synchrotron Medical Research Facility X17B2) at the National Synchrotron Light Source, Brookhaven National Laboratory. The major goal was to evaluate the availability of this kind of imaging for in vivo neurological studies. Using the transvenous coronary angiography system, CT images of various samples and phantoms were taken simultaneously at two slightly different energies bracketing the K-absorption edge of iodine. The logarithmic subtraction of the two images resulted in the contrast enhancement of iodine filled structures. An additional CT image was taken at 99.57 keV (second harmonic of the fundamental wave). The third energy allowed the calculation of absolute iodine, tissue and bone images by means of a matrix inversion. A spatial resolution of 0.8 LP/mm was measured in single energy images and iodine concentrations down to 0.082 mg/ml in a 1/4 diameter detail were visible in the reconstructed subtraction image.

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12 p.

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INIS; OSTI as DE98001160

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  • 5. international conference on applications of physics in medicine and biology, Trieste (Italy), 2-6 Sep 1996

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  • Other: DE98001160
  • Report No.: BNL--64788
  • Report No.: CONF-960955--
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 548745
  • Archival Resource Key: ark:/67531/metadc698747

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  • September 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 4, 2016, 7:07 p.m.

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Menk, R.H.; Thomlinson, W.; Zhong, Z.; Charvet, A.M.; Arfelli, F. & Chapman, L. Three energy computed tomography with synchrotron radiation, article, September 1, 1997; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc698747/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.