Proceedings ArticleDOI
Synchrotron Radiation And Its Application To Digital Subtraction Angiography
E. R ubenstein,E. B. Hughes,L. E. Campbell,R. Hofstadter,R. L. Kirk,T. J. Krolicki,J. P. Stone,S. L. Wilson,H. D. Zeman,W. R. Brody +9 more
- Vol. 0314, pp 42-49
TLDR
The use of such beams provides maximum sensitivity to intra-arterial iodine and virtually eliminates image contrast due to non-vascular body structures as discussed by the authors, which offers the prospect of visualizing arteries by peripheral venous injection.Abstract:
The intense synchrotron radiation produced at electron storage rings provides a new source of X-rays highly suited to iodine K-edge digital subtraction angiography. The high intensity and small angular divergence permit the radiation to be monochromatized by Bragg diffraction and made available in beams of small vertical size, of arbitrary horizontal width, and of tunable energy. The use of such beams provides maximum sensitivity to intra-arterial iodine and virtually eliminates image contrast due to non-vascular body structures. The sensitivity of this method to iodine offers the prospect of visualizing arteries by peripheral venous injection.read more
Citations
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Journal ArticleDOI
Transvenous coronary angiography in humans using synchrotron radiation.
Edward Rubenstein,Robert Hofstadter,H. D. Zeman,A.C. Thompson,J. N. Otis,George Brown,John C. Giacomini,H.J. Gordon,R. S. Kernoff,Donald C. Harrison +9 more
TL;DR: The findings indicate that transvenous coronary angiograms can be acquired in this manner and further refinements in the x-ray imaging system are expected to result in increased x-rays fluence and improved image quality.
Journal ArticleDOI
An attempt at coronary angiography with a large size monochromatic SR beam
A. Akisada,Masami Ando,Kazuyuki Hyodo,S. Hasegawa,K. Konoshi,Katsuyuki Nishimura,A. Maruhashi,Fukae Toyofuku,A. Suwa,K. Kohra +9 more
TL;DR: Results of preliminary experiments are described and the future systems of clinical application of K-edge subtraction with monochromatized SR are described.
Journal ArticleDOI
Comparison of performance characteristics of conventional and K-edge filters in general diagnostic radiology
TL;DR: The different roles of backscattered radiation for skin dose and integral dose are demonstrated, and the necessity of correcting for increased backscatter following additional filtration is stressed and the potential for dose reductions by adding filTration has been found to be substantially smaller than the figures mostly reported.
Medical applications of synchrotron radiation
TL;DR: Those areas of medical research in which synchrotron radiation facilities are actively involved are surveyed, finding tunable, high-intensity monochromatic beams over a wide range of energies which can be tailored to specific programmatc needs.
Book ChapterDOI
Energy-Selective Radiography A Review
L. A. Lehmann,Robert E. Alvarez +1 more
TL;DR: Energy-selective radiography as discussed by the authors makes use of body transmission measurements over multiple X-ray energy spectra, and provides more information than a measurement over a single arbitrary spectrum for the same radiographie exposure.
References
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Charles A. Mistretta,Michael G. Ort,F. Kelcz,John R. Cameron,M. P. Siedband,Andrew B. Crummy +5 more
TL;DR: A new technique has been developed for imaging small concentrations of elements having K absorption edges in the diagnostic x-ray energy range that could lead to a low cost system offering a large reduction in imaging time, with resolution comparable to conventional image intensified fluoroscopy.
Journal ArticleDOI
Spectral considerations for absorption-edge fluoroscopy.
TL;DR: It is shown that, by using the 1-kVp, 2-filter technique, it is possible to image certain elements in the presence of tissue variations of +/-2 cm about the thickness at which perfect tissue cancellation takes place, and logarithmic signal processing extends this range.