VITAE of ALEXANDER KATSEVICH

VITAE of ALEXANDER KATSEVICH

VITAE of ALEXANDER KATSEVICH

FIELDS Tomography, Radon transforms, Medical Imaging, Microlocal Analysis

DEGREES Ph.D. in Mathematics, Kansas State University, 1994

M.S. in Applied Mathematics, Moscow Institute of Oil and Gas, 1988

ACADEMIC EXPERIENCE

Professor Mathematics Department, University of Central Florida (UCF),

August 2008 - present;

Associate Professor Mathematics Department, University of Central Florida (UCF),

August 2002 – July 2008;

Assistant Professor Mathematics Department, UCF, August 1996 – July 2002;

PostDoc Fellow Computing, Information, and Communications Division,

Los Alamos National Laboratory. May 31, 1994 - July 1996;

Research Assistant Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the USSR Academy of Sciences (IZMIRAN),

1988-90

EXTERNAL 1. NSF Grant DMS-9704285, 08/15/97-07/31/01 ($63,000)

FUNDING2. NASA Grant NAG5-10730, 04/15/01-04/14/03 ($236,000)

joint with G. Sellar et. al.

3. NSF Grant DMS-0104033, 09/01/01-08/31/05 ($80,000)

4. NSF Grant DMS-0505494, 06/01/05-05/31/08 ($71,419)

5. NSF Grant DMS-0806304, 09/01/08-08/31/13 ($220,981)

6. NSF Grant DMS-1115615, 07/01/11-06/30/15 ($100,000)

7. NSF Grant DMS-1211164, 07/01/12-06/30/15 ($190,945)

joint with A. Tovbis

Industrial grants:

7. Grant from General Electric 09/15/05-06/01/06

8. Grant from Siemens, Germany 08/08/02-12/31/02

9. Grant from General Electric 08/22/03-10/31/04

10. Grant from General Electric 08/20/04-12/31/04

11. Grant from General Electric 01/01/05-08/07/05

12. Grant from General Electric 01/01/06-12/31/06

13. Grant from Siemens, Germany 11/01/06-06/30/07

14. Grant from Analogic, USA 08/01/09-12/31/09

15. Grant from Microtec, Italy 04/01/10-10/31/10

16. Grant from Microtec, Italy 05/08/11-8/20/11

17. Grant from iTomography 08/01/13-05/07/16

Total amount of external funding: $1,274,194

EditorialOn the editorial board of the international journal “Inverse Problems”

Activity

AWARDS1. Director's fellowship, Los Alamos National Laboratory.

February 1995

2. Research Incentive Award, UCF, Effective August 2001

3. Alexander von Humboldt Research Fellowship, May 2005-July 2007. Extended to August 2008.

4. Research Incentive Award, UCF, Effective August 2006

5. Best paper in tomography Award. The IXth International Conference on Fully 3D Image Reconstruction in Radiology and Nuclear Medicine. Lindau, Germany. July 2007

6. Alexander von Humboldt Research Fellowship, June-August 2012.

7. Research Incentive Award, UCF, Effective August 2012

8. Marcus Wallenberg Prize Laureate (Sweden), 2016

INVENTIONS Inventor on 20 issued US patents

LICENSING Several of my patents have been licensed to major international companies.

Guest professorUniversity of Saint-Etienne, France. Summer 2009.

PositionUniversity of Saarland, Germany. Summer 2015, 2016

ConferenceOrganizer of the special session on “Medical Imaging and Tomography” organizing of the 4th International conference “Sampling Theory and Applications” (SampTA 2001). UCF, May 13-17, 2001.

Member of the scientific committee of “The VIIIth International Conference on Fully 3D Reconstruction in Radiology and Nuclear Medicine”. Salt Lake City, Utah. July 6-9, 2005

Organizer of the minisymposium “Efficient Image Reconstruction in Cone Beam Computer Tomography” SIAM Conference on Imaging Sciences, Minneapolis, Minnesota, May 15-17, 2006.

Organizer of the minisymposium “Wave Propagation and Tomography" at the 32nd SIAM Southeastern-Atlantic Section Conference (SIAM-SEAS 2008). University of Central Florida, Orlando, FL. March 14-15, 2008.

Organizer of the special session on “Novel Developments in Tomography and Applications” at the AMS Spring Eastern Sectional Meeting. University of Maryland, Baltimore County, Baltimore, MD. March 29-30, 2014.

Consulting1. Toshiba Medical Research Institute, USA, and Bio-Imaging Research, Inc., Illinois. June 2001 - present

2. Mobius Imaging. Boston, USA. September 2009 – May 2011

3. Siemens Medical (Germany). Summers of 2002, 2003, and 2004

4. Naval Air Warfare Center (Orlando, FL), Nov 25, 1999-May 25, 2000

Ph.D. Students1. A. Zamyatin. Graduated in December 2003.

2. S. Konate. Graduated in May 2009.

3. R. Krylov. Graduated in December 2014.

4. E. Blackstone. Current student.

Master Students 1. M. Kapralov. Graduated in Spring 2007 (upon graduation he was awarded a three-year fellowship at Stanford University).

2. Jill Dickerson. Graduated in April 2013.

CONFERENCE TALKS (last several years)

Invited plenary speaker at the international conference “100 Years of the Radon Transform” to be held at the Radon Institute for Computational and Applied Mathematics (RICAM) of the Austrian Academy of Sciences. Linz, Austria. March 2016.

Workshop “Computational and Analytical Aspects of Image Reconstruction” ICERM, Brown University. July 13 – 17, 2015.

Applied Inverse Problems conference. Helsinki, Finland. May 25 – 29, 2015.

1108th meeting of the AMS, Special session on Inverse Problems and Imaging. Michigan State University, East Lansing, MI. March 14-15, 2015.

Mathematical Methods and Algorithms in Tomography. Mathematisches Forschungsinsitut, Oberwolfach, Germany. August 10 – 13, 2014

1098th meeting of the AMS, Special session on Novel Developments in Tomography and Applications. University of Maryland, Baltimore County, Baltimore, MD. March 29-30, 2014.

Plenary talk, Workshop on Microlocal methods in Medical Imaging. Fields Institute, Toronto, Canada, August 14-17, 2012.

SIAM conference on imaging science. Special session on X-Ray CT Image Reconstruction, Philadelphia, PA, May 20-22, 2012

1068th meeting of the AMS, Special session on Advances in Biomedical Mathematics.

Rider University. Statesboro, GA, March 12-13, 2011.

Annual meeting of the American Mathematical Society, Special Session “Integral Geometry: Analysis and Applications”. New Orleans, LA. January 6-9, 2011

The First International Meeting on Image Formation in X-Ray Computed Tomography.
Fort Douglas/Olympic Village, Salt Lake City, Utah, USA. June 6-9, 2010

Mathematical Methods and Algorithms in Tomography. Mathematisches Forschungsinsitut, Oberwolfach, Germany. April 11 – 17, 2010

COLLOQUIUM TALKS (last several years)

Analysis seminar. Department of Applied Mathematics. Saarland University. Saarbrucken, Germany. July 2, 2015.

Program in Applied and Computational Mathematics. Princeton University. Princeton, NJ, November 11, 2013.

Analysis seminar. Department of Applied Mathematics. Saarland University. Saarbrucken, Germany. June 20, 2013.

Mathematics Department, Vrije Universiteit Brussel. Brussels, Belgium. June 10, 2013.

Mathematics Department, University of Oldenburg, Germany. July 12, 2012.

PROFESSIONAL PUBLICATIONS

RESEARCH MONOGRAPH

"The Radon Transform and Local Tomography". CRC Press, 1996, 485 pp. (With A.G. Ramm).

PAPERS (last several years)

1. A. Katsevich and M.A. Frenkel. A method of interpolation of transient EM fields. In book: 'Methods for the solution of direct and inverse geoelectric problems', IZMIRAN, Moscow, 1987, pp.78-90. In Russian.

2. M.S. Zhdanov, A. Katsevich, M.A. Frenkel. Interpolation method for transient electromagnetic fields. Il Nuovo Cimento, 1989, 12C, 5, pp.555-565.

3. A. Katsevich and M.A. Frenkel. Correlation method for the localization of geoelectric inhomogeneities. In the book: 'Direct and inverse problems of geoelectrics'. NAUKA, Moscow, 1990, pp. 36-45. In Russian.

4. M.A. Frenkel and A. Katsevich. A method of physical approximation of electromagnetic field. Geophysical Journal, 1992, vol. 110, pp. 421-434.

5. A.G. Ramm and A. Katsevich. Inversion of incomplete Radon transform, Appl. Math. Lett., Vol. 5, No. 2, pp. 41-46, 1992.

6. A. Katsevich and A.G. Ramm. FBP method for inversion of incomplete tomographic data, Appl. Math. Lett., Vol. 5, No. 3, pp. 77-80, 1992.

7. A. Katsevich. Algorithm for recovering discontinuities of a function from its Radon transform, Appl. Math. Lett., Vol. 5, No. 4, pp. 73-75, 1992.

8. A. Katsevich and A.G. Ramm. Multidimensional algorithm for finding discontinuities of signals from noisy discrete data. "Multidimensional inverse problems", Special issue of the Journal "Mathematical and Computer Modelling". Vol. 18, No. 1, pp. 89-107, 1993.

9. A. Katsevich and A.G. Ramm. Consistency of Rank Tests against Some General Alternatives "Mathematical and Computer Modelling". Vol. 18, No. 12, pp. 49-55, 1993.

10. A. Katsevich and A.G. Ramm. Nonparametric estimation of the singularities of a signal from noisy measurements. Proceedings of the AMS. Vol. 120, No. 8, pp. 1221-1234, 1994.

11. A. Katsevich and A.G. Ramm. A method for finding discontinuities of functions from the tomographic data. In book "Tomography, impedance imaging, and integral geometry". Lectures in Applied Mathematics, Vol. 30, pp. 115-123. Amer. Math. Soc., NY, 1994.

12. A. Katsevich and A.G. Ramm. Some mathematical results in signal and image processing. Doklady, Russian Academy of Sciences. Vol. 339, No. 1, pp. 11-14, 1995.

13. A. Katsevich. Kernel estimation of the singularities of a signal. PanAmerican Mathematical Journal, Vol. 5, No. 1, 1995, pp. 1-11.

14. A. Katsevich and A.G. Ramm. Finding singular support of a function from its tomographic data. Proceedings of the Japan Academy, Series A: Mathematical Sciences. Vol. 71, No. 3, pp. 62-67, 1995.

15. V. Faber, A. Katsevich, and A.G. Ramm. Inversion of cone-beam data and helical tomography. Journal of Inverse and Ill-Posed Problems, Vol. 3, No. 6, pp. 429 - 445, 1995.

16. A. Katsevich and A.G. Ramm. Asymptotics of PDO (pseudodifferential operators) on discontinuous functions near singular support. Applicable Analysis, Vol. 58, No. 3-4, pp. 383-390, 1995.

17. A. Katsevich and A.G. Ramm. New methods for finding values of the jumps of a function from its local tomographic data. Inverse Problems, Vol. 11, No. 5, pp. 1005-1023, 1995.

18. A. Katsevich and A.G. Ramm. Pseudolocal tomography. SIAM J. Appl. Math, Vol. 56, No. 1, pp. 167-191, 1996.

19. A. Katsevich and A.G. Ramm. Approximate inverse geophysical scattering on a small body. SIAM J. Appl. Math, Vol. 56, No. 1, pp. 192-218, 1996.

20. A. Katsevich and A.G. Ramm. Consistency of a rank test against general alternatives of change points (surfaces) and continuous trend. Acta Applicandae Mathematicae, Vol. 42, No. 2, pp. 105-137, 1996.

21. A. Katsevich and A.G. Ramm. Approximate solution to inverse scattering problem for potentials with small support. Mathematical Methods in the Applied Sciences, Vol. 19, pp. 1121-1134, 1996.

22. A. Katsevich and A.G. Ramm. Finding jumps of a function using local tomography. PanAmerican Mathematical Journal, Vol. 6, No. 2, pp. 1-21, 1996.

23. A. Katsevich. Local reconstructions in exponential tomography. Journal of Mathematical Analysis and Applications, Vol. 199, pp. 425-444, 1996.

24. A. Katsevich. Local tomography for the generalized Radon transform. SIAM J. Appl. Math, Vol. 57, No. 4, 1997, pp. 1128-1162

25. A. Katsevich. Range of the Radon transform on functions which do not decay fast at infinity. SIAM J. on Math. Analysis, Vol. 28, No. 4, pp. 852-866, 1997.

26. A. Katsevich. Local tomography for the limited-angle problem. Journal of Mathematical Analysis and Applications, Vol. 213, pp. 160-182, 1997.

27. A. Katsevich. Local tomography with non-smooth attenuation II. In book "Inverse Problems, Tomography, and Image Processing" (A. G. Ramm, editor), pp. 73-86, 1998, Plenum, New York.

28. A. Katsevich. Local tomography with non-smooth attenuation. Transactions of the American Mathematical Society, Vol. 351, pp. 1947-1974, 1999.

29. A. Katsevich. Asymptotics of pseudodifferential operators acting on functions with corner singularities. Applicable Analysis, Vol. 72, pp. 229-252, 1999.

30. A. Katsevich. Cone beam local tomography. SIAM J. Appl. Math. Vol. 59, pp. 2224--2246 (1999).

31. A. Katsevich. Analysis of artifacts in local tomography with non-smooth attenuation. Contemporary Mathematics, Amer. Math. Soc. Vol. 251, pp.339-370 (2000).

32. A. Katsevich. On quasi-local inversion of spiral CT data. Mathematical Methods in the Applied Sciences. Vol. 23, pp. 271-297 (2000).

33. A. Katsevich. New range theorems for the dual Radon transform. Transactions of the American Mathematical Society, Vol. 353, pp. 1089-1102 (2001).

34. A. Katsevich. Range theorems for the Radon transform and its dual. Contemporary Mathematics, Amer. Math. Soc., Vol. 278, pp. 167-191 (2001).

35. A. Katsevich. Micro-local analysis of an FBP algorithm for truncated spiral cone beam data. The Journal of Fourier Analysis and Applications, Vol. 8, pp. 407-425 (2002).

36. A. Katsevich. Theoretically exact FBP-type inversion algorithm for spiral CT. SIAM J. Appl. Math., Vol. 62, pp. 2012-2026 (2002).

37. A. Katsevich. Analysis of an exact algorithm for spiral cone beam CT. Physics in Medicine and Biology, Vol. 47, pp. 2583-2597 (2002)

38. A. Katsevich. A general scheme for constructing inversion algorithms for cone beam CT, International Journal of Mathematics and Mathematical Sciences, Vol. 21, pp. 1305-1321 (2003).

39. A. Katsevich. Improved exact filtered back-projection algorithm for spiral CT. Advances in Applied Mathematics, Vol. 32, pp. 681-697 (2004).

40. A. Katsevich and G. Lauritsch.. Filtered back-projection algorithms for spiral cone beam CT. In book: Sampling, Wavelets, and Tomography. (A. Zayed and J. Benedetto, editors), pp. 255-287, 2003, Birkhauser, Boston.

41. A. Katsevich. On two versions of a 3 algorithm for spiral CT. Physics in Medicine and Biology, Vol. 49, pp. 2129 – 2143 (2004).

42. A. Katsevich, S. Basu, and J. Hsieh. Exact filtered backprojection reconstruction for dynamic pitch helical cone beam computed tomography. Physics in Medicine and Biology, Vol. 49, pp. 3089 – 3103 (2004).

43. A. Katsevich. Image reconstruction for the circle and line trajectory. Physics in Medicine and Biology, Vol. 49, pp. 5059 – 5072 (2004). - Institute of Physics (IoP) Select article.

Articles for IoP Select are chosen by IoP editors “for their novelty, significance and potential impact on future research”.

44. A. Katsevich. An inversion formula for the dual horocyclic Radon Transform on the hyperbolic plane. Mathematische Nachrichten, Vol. 278, pp. 437 – 450 (2005).

45. A. Katsevich. Stability estimates for helical CT. Journal of Fourier Analysis and Applications, Vol. 11, no. 1, pp. 85 — 105 (2005).

46. A. Katsevich. Image reconstruction for the circle and arc trajectory. Physics in Medicine and Biology, Vol. 50, pp. 2249 – 2265 (2005).

47. A. Katsevich and A. Zamyatin. Analysis of a family of exact inversion formulas for cone beam CT. Contemporary Mathematics, Amer. Math. Soc. Vol. 405, pp. 59 –74 (2006).

48. A. Katsevich. 3PI algorithms for helical computer tomography. Advances in Applied Mathematics, Vol. 36, pp. 213 – 250 (2006).

49. A. Katsevich, K. Taguchi, and A. Zamyatin. Formulation of four Katsevich algorithms in native geometry. IEEE Transactions on Medical Imaging. Vol. 25, pp. 855 – 868 (2006).

50. A. Katsevich. Improved cone beam local tomography. Inverse Problems, Vol. 22, pp. 627 – 643 (2006).

This article has been selected by the Editorial Board for the 2006 highlights.

51. M. Kapralov and A. Katsevich. A one-PI algorithm for helical trajectories that violate the convexity condition. Inverse Problems. Vol. 22, pp. 2123 – 2143 (2006). - Institute of Physics (IoP) Select article.

Articles for IoP Select are chosen by IoP editors “for their novelty, significance and potential impact on future research”.

52. A. Katsevich and M. Kapralov. Filtered backprojection inversion of the cone beam transform for a general class of curves. SIAM J. Appl. Math. Vol. 68, pp. 334–353 (2007).

53. A. Katsevich. Image reconstruction for a general circle-plus trajectory. Inverse Problems. Vol. 23, pp. 2223 – 2230 (2007).

54. A. Katsevich. Motion compensated local tomography. Inverse Problems. Vol. 24 (2008). Article id 045012 (21pp)

55. A. Katsevich and F. Natterer. Ultrasound tomography with sources on a line. "Mathematical Methods in Biomedical Imaging and Intensity-Modulated Radiation Therapy (IMRT)", Y. Censor, M. Jiang and A.K. Louis, Editors, Edizioni della Normale, Pisa, Italy, 2008.

56. A. Zamyatin, A. Katsevich, and B. S. Chiang. Exact image reconstruction for circle and line trajectory with gantry tilt. Physics in Medicine and Biology. Vol. 53, pp. N423 – N435 (2008).

57. M. Kapralov and A. Katsevich. On the study of 1PI algorithms for a general class of curves. SIAM Journal on Imaging Sciences. Vol. 1, pp. 418 – 459 (2008).

58. A. Katsevich, A. Zamyatin,and M. Silver. Optimized reconstruction algorithm for helical CT with fractional pitch between 1PI and 3PI. IEEE Transactions on Medical Imaging. Vol. 28, pp. 982 – 990 (2009).

59. A. Katsevich. An approach to motion compensation in tomography. In volume: Biomedical Mathematics: Promising Directions in Imaging, Therapy Planning and Inverse Problems, Yair Censor, Ming Jiang and Ge Wang (Editors), Medical Physics Publishing, Madison, Wisconsin, pp. 221 – 242 (2010).

60. Y. Lu, A. Katsevich, J. Zhao, H. Yu, and G. Wang. Fast Exact/Quasi-Exact FBP Algorithms for Triple-Source Helical Cone-Beam CT. IEEE Transactions on Medical Imaging Vol. 29, pp. 756 – 770 (2010).

61. A. Katsevich. An accurate approximate algorithm for motion compensation in two- dimensional tomography. Inverse Problems. Vol. 26, article id 065007 (2010).

62. A. Katsevich. Singular value decomposition for the truncated Hilbert transform. Inverse Problems. Vol. 26, article id 115011, 12pp (2010).

63. A. Katsevich, M. Silver, and A. Zamyatin. Local tomography and the motion estimation problem. SIAM Journal on Imaging Sciences. Vol. 4, pp. 200 – 219 (2011).

64. A. Katsevich. A note on computing the derivative at constant direction. Physics in Medicine and Biology. Vol. 56, pp. N53 – N61 (2011).

65. A. Katsevich. Singular value decomposition for the truncated Hilbert transform: part II. Inverse Problems. Vol. 27, article id 075006, 7pp (2011).

66. G. Wang, H. Yu, W. Cong, and A. Katsevich. Non-uniqueness and instability of

‘ankylography’. Nature. Vol. 480 (2011).

67. E. Katsevich, A. Katsevich, G. Wang. Stability of the interior problem for polynomial region of interest. Inverse Problems. Vol. 28, article id 065022, 28 pp (2012).

68. X. Jin, A. Katsevich, H. Yu, G. Wang, L. Li, Z. Chen. Interior Tomography with Continuous Singular Value Decomposition. IEEE Transactions on Medical Imaging, Vol. 31, pp. 2108 – 2119 (2012).

69. A. Katsevich, and A. Tovbis. Finite Hilbert transform with incomplete data: null-space and singular values. Inverse Problems. Vol. 28, article id 105006, 28 pp. (2012).

70. M. Bertola, A. Katsevich, and A. Tovbis. Inversion formulae for the cosh-weighted Hilbert transform. Proceedings of the AMS Vol. 141, pp. 2703 – 2718. (2013)

71. A. Katsevich, and T. Schuster. An exact inversion formula for cone beam vector tomography. Inverse Problems. Vol. 29, article id 065013, 13 pp. (2013).

This article was selected by the IOP for inclusion into the Insights collection.

72. A. Katsevich, and R. Krylov. Broken ray transform: inversion and a range condition. Inverse Problems. Vol. 29, article id 075008, 15 pp. (2013).

73. R. Al-Aifari and A. Katsevich. Spectral analysis of the truncated Hilbert transform with overlap. SIAM Journal on Mathematical Analysis. Vol. 46, pp. 192 – 213 (2014)

74. G. Katsevich, A. Katsevich, and A. Singer. Covariance matrix estimation for the cryo-EM heterogeneity problem. SIAM Journal on Imaging Sciences, Vol. 8, pp. 126 – 185 (2015).

75. M. Bertola, A. Katsevich, and A. Tovbis. Singular value decomposition of a finite Hilbert transform defined on several intervals and the interior problem of tomography: the Riemann-Hilbert problem approach. Communications on Pure and Applied Mathematics, accepted for publication (2014).

76. R. Al-Aifari, M. Defrise, and A. Katsevich. Asymptotic analysis of the SVD for the truncated Hilbert transform with overlap. SIAM Journal on Mathematical Analysis, Vol. 47, pp. 797–824 (2015).

77. R. Krylov and A. Katsevich. Inversion of the broken ray transform in the case of energy-dependent attenuation. Inverse problems, Vol. 60, pp. 4313-4334 (2015).

78. A. Katsevich, and A. Tovbis. Diagonalization of the Finite Hilbert Transform on two adjacent intervals. Journal of Fourier Analysis and Applications (February 2016). DOI 10.1007/s00041-016-9458-x

79. M. Bertola, A. Katsevich, and A. Tovbis. On Sobolev instability of the interior problem of tomography. Journal of Mathematical Analysis and Applications, accepted for publication (December 2015).

80. A. Katsevich. Reconstruction algorithms for a class of restricted ray transforms without added singularities. Journal of Fourier Analysis and Applications. (April 2016). DOI 10.1007/s00041-016-9473-y

PROCEEDINGS PAPERS

1. “Exact consideration of data redundancies for spiral cone-beam CT” (2004). With Günter Lauritsch and Michael Hirsch.

2. “Exact and efficient cone-beam reconstruction algorithm for a short-scan circle combined with various lines” SPIE Medical Imaging Conference, San Diego, February 2005. With F. Dennerlein, G. Lauritsch, and J. Hornegger.

3. A. Katsevich, M. Kapralov. Theoretically Exact FBP Reconstruction Algorithms for two General Classes of Curves. pp. 80-83. Proceedings of the 9th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, July 9-13, 2007. Lindau, Germany.

4. A. Katsevich, F. Natterer: Ultrasound Tomography with Sources on a Line. pp. 159-161. Proceedings of the 9th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, July 9-13, 2007. Lindau, Germany.

5. A. Katsevich, A. Zamyatin, M. Silver. Optimized Reconstruction Algorithm for Helical CT with Fractional Pitch between 1PI and 3PI. pp. 333-336. Proceedings of the 9th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, July 9-13, 2007. Lindau, Germany.

6. A. Zamyatin, B. Chiang, A. Katsevich, S. Nakanishi. Filtered Backprojection Algorithm for Circle and Line Reconstruction with Gantry Tilt. pp. 337-339. Proceedings of the 9th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, July 9-13, 2007. Lindau, Germany.