Energy resolution of a silicon detector with the RX64 ASIC designed for X-ray imaging

Bollini, D.; Rodríguez, Ana; Dąbrowski, W.; García, Angelina Díaz; Gambaccini, M.; Giubellino, P.; Gryboś, P.; Idzik, M.; Marzari‐Chiesa, A.; Montaño, Luis Manuel; Prino, F.; Ramello, L.; Sitta, M.; Świentek, K.; Wheadon, R.; Wiącek, P.

doi:10.1016/j.nima.2003.07.020

Cited by 7 publications

(5 citation statements)

References 15 publications

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“…The energy resolution of the present detector is lower than some previously reported results on similar silicon strip detectors [14], which is, however, due mainly to the fact that we have considered a full system in this study. For instance, the small strip pitch needed for high-resolution mammography causes relatively large amounts of electronic noise and charge sharing, the double-threshold conguration adds complexity and electronic noise, and channelto-channel threshold spread reduces the energy resolution when more than one channel is considered.…”

Section: Resultscontrasting

confidence: 73%

“…For both of the above approaches, however, the eectiveness may be impaired due to overlap of the spectra, and a limited exibility in choice of spectra and energy levels. In recent years, photon-counting silicon detectors with high intrinsic energy resolution and, in principle, an unlimited number of energy levels (electronic spectrum-splitting) have been introduced as another option [9,10,13,14].…”

Section: Introductionmentioning

confidence: 99%

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Energy resolution of a photon-counting silicon strip detector

Fredenberg

Lundqvist

Cederström

et al. 2010

Nuclear Instruments and Methods in Physics Research Section A:

105

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Section: Resultscontrasting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Energy resolution of a photon-counting silicon strip detector

Fredenberg

Lundqvist

Cederström

et al. 2010

Nuclear Instruments and Methods in Physics Research Section A:

105

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“…Among available semiconductor detectors, those with a single chemical element, such as silicon (Si) or germanium (Ge), are most frequently used in nuclear medicine [18,19]. However, the low atomic number of Si leads to low absorption efficiency, due to low stopping power for high-energy gamma-ray photons, and Ge has major limitations, such as a narrow band-gap energy which is useful only at cryogenic temperatures [20,21].…”

Section: Pid 350 Cdte Psdmentioning

confidence: 99%

A Numerical Study of Different Types of Collimators for a High-Resolution Preclinical CdTe Pixelated Semiconductor SPECT System

Jeong

Kim

Bae

et al. 2016

Journal of the Optical Society of Korea

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In single-photon-emission computed tomography (SPECT) with a pixelated semiconductor detector (PSD), not only pinhole collimators but also parallel-hole collimators are often used in preclinical nuclear-medicine imaging systems. The purpose of this study was to evaluate and compare pinhole and parallel-hole collimators in a PSD. For that purpose, we paired a PID 350 (Ajat Oy Ltd., Finland) CdTe PSD with each of the four collimators most frequently used in preclinical nuclear medicine: (1) a pinhole collimator, and (2) low-energy high-resolution (LEHR), (3) low-energy general-purpose (LEGP), and (4) low-energy high-sensitivity (LEHS) parallel-hole collimators. The sensitivity and spatial resolution of each collimator was evaluated using a point source and a hot-rod phantom. The highest sensitivity was achieved using LEHS, followed by LEGP, LEHR, and pinhole. Also, at a source-to-collimator distance of 2 cm, the spatial resolution was 1.63, 2.05, 2.79, and 3.45 mm using pinhole, LEHR, LEGP, and LEHS, respectively. The reconstructed hot-rod phantom images showed that the pinhole collimator and the LEHR parallel-hole collimator give a fine spatial resolution for preclinical SPECT with PSD. In conclusion, we successfully compared different types of collimators for a preclinical pixelated semiconductor SPECT system.

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“…One of the most important application of radiation detectors is found in medical physics. Our research group has been working on the research and development of semiconducting and scintillating detector based systems, mainly for medical imaging applications [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%