FEBRUARY 1997 VOLUME 44 NUMBER 1 IETNAE (ISSN 0018–9499)

REGULAR PAPERS

Pixel X-Ray Detectors in Epitaxial Gallium Arsenide with High-Energy Resolution Capabilities (Fano FactorExperimental Determination). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G. Bertuccio, A. Pullia, J. Lauter, A. F¨orster, and H. Luth 1

Detection of Neutron-Induced Nuclear Recoils in a Low-Pressure Gaseous Detector for Particle Dark MatterSearches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .K. N. Buckland, M. J. Lehner, and G. E. Masek 6

Simulation of Electrons Irradiation Damages to Optimize the Performance of IGBT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O. Elmazria, A. Hoffmann, B. Lepley, J.-P. Charles, and L. Adams14

CMOS Low-Noise Switched Charge Sensitive Preamplifier for CdTe and CdZnTe X-Ray Detectors. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C. G. Jakobson and Y. Nemirovsky 20

Positron Emission Tomography of Large Rock Samples Using a Multiring PET Instrument. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .R. P. Maguire, J. H. Missimer, F. Emert, D. W. Townsend, H. Dollinger, and K. L. Leenders26

A Four-Channel, Low-Power CMOS Charge Preamplifier for Silicon Detectors with Medium Value of Capacitance. . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N. Randazzo, G. V. Russo, D. Lo Presti, S. Panebianco, C. Petta, and S. Reito31

Accelerating Execution of the Integrated TIGER Series Monte Carlo Radiation Transport Codes . .. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .L. M. Smith and R. D. Hochstedler 36

Nonlinearity of Pulse Height of Recoil Helium inHe Proportional Counters .. . . . . . . . . . . . . . . . . .N. Takeda and K. Kudo 42The YAP Camera: An Accurate Gamma Camera Particularly Suitable for New Radiopharmaceuticals Research

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F. Vittori, T. Malatesta, and F. de Notaristefani 47Reconstruction Method for Fluorescent X-Ray Computed Tomography by Least-Squares Method Using Singular Value

Decomposition.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .T. Yuasa, M. Akiba, T. Takeda,M. Kazama, A. Hoshino, Y. Watanabe, K. Hyodo, F. A. Dilmanian, T. Akatsuka, and Y. Itai. . . . . . . . . . . . . . . . . . . . 54

COMMUNICATIONS

Analytical Expressions for the Calculation of Pixel Detector Capacitances. . . . . . . . . . . . . . . . . .A. Cerdeira and M. Estrada 63

SELECTED PAPERS FROM THE 1995 NUCLEAR SCIENCE SYMPOSIUM ANDMEDICAL IMAGING CONFERENCE (NSS-MIC’95)

Simultaneous Emission and Transmission Scanning in PET Oncology: The Effect on Parameter Estimation. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S. R. Meikle, S. Eberl, P. K. Hooper, and M. J. Fulham 67

Lead and Tungsten Pinhole Inserts for I-131 SPECT Tumor Imaging: Experimental Measurements and Photon TransportSimulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M. F. Smith, R. J. Jaszczak, H. Wang, and J. Li74

Advantage of Fan Beam Collimators for Contrast Recovery of Hyperfixation in Clinical SPECT . .. . . . . . . . . . . . . . . . . . . . . .P. Vera, O. de Dreuille, B. Bendriem, I. Gardin, J. L. Sti˚evenart, J. F. M´enard, C. Pare, M. Bourguignon, B. Bok, andA. Syrota. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Evaluation of Simulation-Based Scatter Correction for 3-D PET Cardiac Imaging .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .C. C. Watson, D. Newport, M. E. Casey, R. A. deKemp, R. S. Beanlands, and M. Schmand90

(Continued on back cover)

(Continued from front cover)

Iterative Reconstruction with Attenuation Compensation from Cone-Beam Projections Acquired via Nonplanar Orbits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G. L. Zeng, Y. Weng, and G. T. Gullberg 98An SVD Study of Truncated Transmission Data in SPECT .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G. L. Zeng and G. T. Gullberg 107

IEEE Copyright Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115