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# IEEE Transactions on Nuclear Science

## Issue 3  Part 1 • June 2009

This issue contains several parts.Go to:  Part 2  | Part 3

## Filter Results

Displaying Results 1 - 25 of 30
• ### [Front cover]

Publication Year: 2009, Page(s): C1
| PDF (63 KB)
• ### IEEE Transactions on Nuclear Science publication information

Publication Year: 2009, Page(s): C2
| PDF (39 KB)
• ### Table of contents

Publication Year: 2009, Page(s):533 - 534
| PDF (84 KB)
• ### Photon Counting Energy Dispersive Detector Arrays for X-ray Imaging

Publication Year: 2009, Page(s):535 - 542
Cited by:  Papers (108)
| | PDF (1156 KB) | HTML

The development of an innovative detector technology for photon-counting in X-ray imaging is reported. This new generation of detectors, based on pixellated cadmium telluride (CdTe) and cadmium zinc telluride (CZT) detector arrays electrically connected to application specific integrated circuits (ASICs) for readout, will produce fast and highly efficient photon-counting and energy-dispersive X-ra... View full abstract»

• ### Energy and Timing Resolution Studies With Silicon Photomultipliers (SiPMs) and 4-Pixel SiPM Matrices for PET

Publication Year: 2009, Page(s):543 - 548
Cited by:  Papers (17)  |  Patents (2)
| | PDF (504 KB) | HTML

A high performance detector head with matrices of silicon photomultipliers (SiPMs) as photodetectors is under development at the University of Pisa and INFN Pisa. The silicon photomultipliers fabricated at FBK-irst (Trento, Italy) are being evaluated for this purpose. Single SiPM detectors of 1 mm x 1 mm size and the first SiPM test matrices composed of four (2 x 2) pixel elements in a common subs... View full abstract»

• ### Spatial Distortion Correction and Crystal Identification for MRI-Compatible Position-Sensitive Avalanche Photodiode-Based PET Scanners

Publication Year: 2009, Page(s):549 - 556
Cited by:  Papers (10)
| | PDF (797 KB) | HTML

Position-sensitive avalanche photodiodes (PSAPDs) are gaining widespread acceptance in modern PET scanner designs, and owing to their relative insensitivity to magnetic fields, especially in those that are MRI-compatible. Flood histograms in PET scanners are used to determine the crystal of annihilation photon interaction and hence, for detector characterization and routine quality control. For PE... View full abstract»

• ### Thick Silicon Double-Sided Strip Detectors for Low-Energy Small-Animal SPECT

Publication Year: 2009, Page(s):557 - 564
Cited by:  Papers (6)
| | PDF (1250 KB) | HTML

This work presents characterization studies of thick silicon double-sided strip detectors for a high-resolution small-animal SPECT. The dimension of these detectors is 60.4 mm times 60.4 mm times 1 mm. There are 1024 strips on each side that give the coordinates of the photon interaction, with each strip processed by a separate ASIC channel. Our measurement shows that intrinsic spatial resolution ... View full abstract»

• ### Suppression of Afterglow in Microcolumnar CsI:Tl by Codoping With Sm$^{2+}$ : Recent Advances

Publication Year: 2009, Page(s):565 - 569
Cited by:  Papers (6)
| | PDF (1287 KB) | HTML

Microcolumnar CsI:Tl remains a highly desirable sensor for digital X-ray imaging due to its superior spatial resolution, bright emission, high absorption efficiency, and ready availability. Despite such obvious advantages, two characteristic properties of CsI:Tl undermine their use in clinical and high speed imaging: a persistent afterglow in its scintillation decay, and a hysteresis effect that d... View full abstract»

• ### Scintillation Properties of 2-Inch-Diameter ${rm Pr}:{rm Lu}_{3}{rm Al}_{5}{rm O}_{12}$ (LuAG) Single Crystal

Publication Year: 2009, Page(s):570 - 573
Cited by:  Papers (29)
| | PDF (403 KB) | HTML

Pr:LuAG crystals possess interesting properties, such as high density, high light yield, and very fast 5d-4f emission decay time. Recently, we developed a Pr:LuAG single crystal with a diameter of 2 inches for scintillator applications, such as medical imaging. In this study, Pr-doped Lu3Al5O12 (Pr:LuAG) single crystals with a diameter of 2 inches were grown by mea... View full abstract»

• ### PET Performance Evaluation of an MR-Compatible PET Insert

Publication Year: 2009, Page(s):574 - 580
Cited by:  Papers (21)
| | PDF (1015 KB) | HTML

A magnetic resonance (MR) compatible positron emission tomography (PET) insert has been developed in our laboratory for simultaneous small animal PET/MR imaging. This system is based on lutetium oxyorthosilicate (LSO) scintillator arrays with position-sensitive avalanche photodiode (PSAPD) photodetectors. The PET performance of this insert has been measured. The average reconstructed image spatial... View full abstract»

• ### Signal Deconvolution Concept Combined With Cubic Spline Interpolation to Improve Timing With Phoswich PET Detectors

Publication Year: 2009, Page(s):581 - 587
Cited by:  Papers (3)
| | PDF (678 KB) | HTML

PET imaging scanners based on all-digital architecture offer greater data processing flexibility and the possibility to recalibrate the system with simple software procedures. The LabPET scanner, designed at the Universite de Sherbrooke, is one such device. It is built around dual LYSO/LGSO scintillators in a phoswich arrangement coupled to Avalanche Photodiodes (APD) and combined with highly para... View full abstract»

• ### Time Discrimination Techniques Using Artificial Neural Networks for Positron Emission Tomography

Publication Year: 2009, Page(s):588 - 595
Cited by:  Papers (4)
| | PDF (666 KB) | HTML

Relevant information in positron emission tomography is currently being obtained mostly by analog signal-processing methods. New digital PET scanner architectures are now becoming available, which offer greater flexibility and easier reconfiguration capability as compared to previous PET designs. Moreover, new strategies can be devised to extract more information with better accuracy from the digi... View full abstract»

• ### Improved Spatial Resolution in PET Scanners Using Sampling Techniques

Publication Year: 2009, Page(s):596 - 601
Cited by:  Papers (4)
| | PDF (977 KB) | HTML

Increased focus towards improved detector spatial resolution in PET has led to the use of smaller crystals in some form of light sharing detector design. In this work we evaluate two sampling techniques that can be applied during calibrations for pixelated detector designs in order to improve the reconstructed spatial resolution. The inter-crystal positioning technique utilizes sub-sampling in the... View full abstract»

• ### PCA-Based Algorithm for Generation of Crystal Lookup Tables for PET Block Detectors

Publication Year: 2009, Page(s):602 - 607
Cited by:  Papers (4)
| | PDF (1672 KB) | HTML

State-of-the-art data-acquisition systems for positron emission tomography (PET) block detectors use anger logic to determine preliminary 2-D coordinates of the detection location within the block. Typically, a crystal lookup table (CLT) is then used to map from this position to the index of the crystal in which the particle was actually absorbed. Depending on the complexity of the detector design... View full abstract»

• ### Distortion Correction and Geometric Calibration for X-Ray Angiography System

Publication Year: 2009, Page(s):608 - 619
Cited by:  Patents (6)
| | PDF (1725 KB) | HTML

Based on the knowledge that distortion is the result of pixel movement, a distortion correction method is developed by analyzing the principle of distortion change with imaging orientation, which can be used to correct the imaging distortion of a conventional X-ray angiography (XRA) system with an image intensifier. Distortion at any arbitrary imaging orientation can be corrected by integrating th... View full abstract»

• ### Positron Emission Tomography-Guided Biopsy With a Dedicated Breast Scanner: Initial Evaluation

Publication Year: 2009, Page(s):620 - 624
Cited by:  Papers (3)
| | PDF (339 KB) | HTML

Efforts to create dedicated nuclear medicine breast imaging scanners are maturing as they approach more routine clinical use. These systems promise to improve the detection of small lesions, especially those in breasts that are not definitively imaged with standard methods. Since these techniques lack sufficient specificity for accurate diagnoses of cancer, a method for guiding biopsies with these... View full abstract»

• ### Performance Evaluation of a Bedside Cardiac SPECT System

Publication Year: 2009, Page(s):625 - 632
Cited by:  Papers (2)
| | PDF (2379 KB) | HTML

This paper reports on the initial performance evaluation of a bedside cardiac PET/SPECT system. The system was designed to move within a hospital to image critically-ill patients, for example, those in intensive care unit (ICU) or emergency room settings, who cannot easily be transported to a conventional SPECT or PET facility. The system uses two compact (25 cm times 25 cm) detectors with pixilat... View full abstract»

• ### Performance Characteristics of a New LSO PET/CT Scanner With Extended Axial Field-of-View and PSF Reconstruction

Publication Year: 2009, Page(s):633 - 639
Cited by:  Papers (41)
| | PDF (782 KB) | HTML

A new combined lutetium oxyorthosilicate (LSO) PET/CT scanner with an extended axial field-of-view (FOV) of 21.8 cm has been developed (Biograph TruePoint PET/CT with TrueV; Siemens Molecular Imaging) and introduced into clinical practice. The scanner includes the recently announced point spread function (PSF) reconstruction algorithm. The PET components incorporate four rings of 48 detector block... View full abstract»

• ### Wireless Synchronization of a Multi-Pinhole Small Animal SPECT Collimation Device With a Clinical Scanner

Publication Year: 2009, Page(s):640 - 645
Cited by:  Papers (1)
| | PDF (2000 KB) | HTML

A multi-pinhole collimation device for small animal single photon emission computed tomography (SPECT) uses the gamma camera detectors of a standard clinical SPECT scanner. The collimator and animal bed move independently of the detectors, and therefore their motions must be synchronized. One approach is manual triggering of the SPECT acquisition simultaneously with a programmed motion sequence fo... View full abstract»

• ### Multi-Pinhole SPECT Imaging With Silicon Strip Detectors

Publication Year: 2009, Page(s):646 - 652
Cited by:  Papers (10)
| | PDF (810 KB) | HTML

Silicon double-sided strip detectors offer outstanding instrinsic spatial resolution with reasonable detection efficiency for iodine-125 emissions. This spatial resolution allows for multiple-pinhole imaging at low magnification, minimizing the problem of multiplexing. We have conducted imaging studies using a prototype system that utilizes a detector of 300-micrometer thickness and 50-micrometer ... View full abstract»

• ### Correction Technique for Cascade Gammas in I-124 Imaging on a Fully-3D, Time-of-Flight PET Scanner

Publication Year: 2009, Page(s):653 - 660
Cited by:  Papers (19)
| | PDF (941 KB) | HTML

It has been shown that I-124 PET imaging can be used for accurate dose estimation in radio-immunotherapy techniques. However, I-124 is not a pure positron emitter, leading to two types of coincidence events not typically encountered: increased random coincidences due to non-annihilation cascade photons, and true coincidences between an annihilation photon and primarily a coincident 602 keV cascade... View full abstract»

• ### Characterizing the MTF in 3D for a Quantized SPECT Camera Having Arbitrary Trajectories

Publication Year: 2009, Page(s):661 - 670
Cited by:  Papers (1)
| | PDF (2562 KB) | HTML

The emergence of application-specific 3D tomographic small animal and dedicated breast imaging systems has stimulated the development of simple methods to quantify the spatial resolution or modulation transfer function (MTF) of the system in three dimensions. Locally determined MTFs, obtained from line source measurements at specific locations, can characterize spatial variations in the system res... View full abstract»

• ### Evaluation of Respiratory Motion Effect on Defect Detection in Myocardial Perfusion SPECT: A Simulation Study

Publication Year: 2009, Page(s):671 - 676
Cited by:  Papers (5)
| | PDF (494 KB) | HTML

The objective of this study is to investigate the effects of respiratory motion (RM) on defect detection in Tc-99m sestamibi myocardial perfusion SPECT (MPS) using a phantom population that includes patient variability. Three RM patterns are included, namely breath-hold, slightly enhanced normal breathing, and deep breathing. For each RM pattern, six 4-D NCAT phantoms were generated, each with ana... View full abstract»

• ### Respiratory Gated PET Derived in a Fully Automated Manner From Raw PET Data

Publication Year: 2009, Page(s):677 - 686
Cited by:  Papers (13)  |  Patents (2)
| | PDF (1332 KB) | HTML

Respiratory motion in PET degrades image quality and limits detectability of small or low-contrast lesions. Although image quality can be improved using respiratory-gating, this adds to the complexity and expense of acquiring PET data. We aimed to develop a data-driven method, based on individual voxel signal fluctuations, for accomplishing electronic respiratory gating of clinical PET data, requi... View full abstract»

• ### A Backprojection-Based Parameter Estimation Technique for Skew-Slit Collimation

Publication Year: 2009, Page(s):687 - 693
Cited by:  Papers (2)
| | PDF (1334 KB) | HTML

To estimate geometric parameters in a skew-slit single photon emission computed tomography (SPECT) scan, a simple method is presented that uses a single point source and a backprojection process. The method employs one point source placed sufficiently far from the axis of rotation but in the field of view. A skew-slit geometry is considered where the estimated parameters include the focal lengths ... View full abstract»

## Aims & Scope

IEEE Transactions on Nuclear Science focuses on all aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.

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## Meet Our Editors

Editor-in-Chief
Paul Dressendorfer
11509 Paseo del Oso NE
Albuquerque, NM  87111  USA