A5056836091- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Gamma-ray bursts and supernovae
- Advanced X-ray and CT Imaging
- Particle Detector Development and Performance
- Advanced Radiotherapy Techniques
- Digital Radiography and Breast Imaging
- Radiomics and Machine Learning in Medical Imaging
- Pulsars and Gravitational Waves Research
- Astro and Planetary Science
- Radiation Therapy and Dosimetry
- Astrophysical Phenomena and Observations
- Astronomy and Astrophysical Research
- Luminescence Properties of Advanced Materials
- bioluminescence and chemiluminescence research
- Planetary Science and Exploration
- Astrophysics and Cosmic Phenomena
- Radiopharmaceutical Chemistry and Applications
- Radioactive Decay and Measurement Techniques
- Nuclear Materials and Properties
- Photocathodes and Microchannel Plates
- Advanced Semiconductor Detectors and Materials
- MRI in cancer diagnosis
Sapienza University of Rome
2010-2019
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2009-2019
Istituto Nazionale di Fisica Nucleare
2008-2015
National Agency for New Technologies, Energy and Sustainable Economic Development
1993-2009
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2009
University of Bologna
2009
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2009
Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
2009
Institute of Biomedical Technologies
2002
Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
1992-2000
The proposal of Mindview European Project concerns with the development a very high resolution and efficiency brain dedicated PET scanner simultaneously working Magnetic Resonance scanner, that expects to visualize neurotransmitter pathways their disruptions in quest better diagnose schizophrenia. On behalf this project, we propose low cost module for first prototype, based on monolithic crystals, suitable be integrated head Radio Frequency (RF) coil. aim suggested is achieve performances...
The authors report on the performance of two small field view, compact gamma cameras working in single photon counting planar imaging tests at 122 and 140 keV. first camera is based a scintillator continuous crystal assembled with flat panel multianode photomultiplier tube parallel readout. second one belongs to class semiconductor hybrid pixel detectors, specifically, CdTe detector square pixels pitch , read out by CMOS integrated circuit Medipix2 series. scintillation was operated...
Nuclear medicine imaging devices commonly use multi-element photo detection systems, composed of an array N × elements, each one providing individual signal. Many strategies have been developed to reduce the number readout channels, main approaches is Rows and Columns (R/C) projection logic. In this paper we proposed a modified version Raised To Power (RTP) algorithm adapted R/C order validate its efficiency linear scanning irradiation on two 49× 49 mm2 LaBr3:Ce (0.5%) crystals with...
The Italian-Dutch satellite for X-ray Astronomy BeppoSAX is successfully operating on a 600 km equatorial orbit since May 1996. We present here the in-flight performances of Gamma Ray Burst Monitor experiment during its first year operation. GRBM secondary function four CsI(Na) slabs primarily as an active anticoincidence PDS hard experiment.. It has geometric area about 4000 cm2 but, due to location in core effective dependent energy and direction impinging photons. A dedicated electronics...
Recently scintillators with very high light yield and photodetectors quantum efficiency have been opening a new way to realize gamma cameras superior performances based on continuous crystals. Pixilated imagers spatial resolution limited by pixel size, in contrast scintillation crystals, where is statistical function depending distribution spread generated photoelectrons from flash. Continuous LaBr <inf xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Geant4 is an object oriented toolkit created for the simulation of High-Energy Physics detectors. allows accurate modeling radiation sources and detector devices, with easy configuration friendly interface at same time great accuracy in physical processes. While most Monte Carlo codes do not allow transport boundary characteristics optical photons generated by scintillating crystal, photons. In this paper we present application program simulating SPECT cameras. We aim to study light within...
The Depth of Interaction (DoI) detection is crucial in many medical imaging applications such as small ring PET and high resolution SPECT. In this work we investigate the possibility to discriminate DoI using continuous crystals. A LaBr <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (Ce) crystal has been used system for its intrinsic light yield, that especially at low energies (e.g. 140 keV) reduces considerably statistical...
The introduction of Lanthanum Bromide crystal, characterized by a fast and high light emission, offers the possibility to improve both imaging spatial resolution energy in SPECT 80–300 kev range, without compromising detection efficiency. expected performances may be limited if crystal is used with multi-anode PMT Position Sensitive response due wide differences segmented anode pad gains, ranging from 2:1 10:1, . These characteristics strongly deteriorate overall and, consequently, impair...
Achieved spatial resolution of the PET systems is often limited by parallax error due to lack information about Depth Interaction (DoI) inside crystal incoming 511 keV annihilation photons. The smaller diameter ring and thicker scintillator are, more this affects imaging performance. In work, a DoI calculator suitable for monolithic scintillation crystals based on shape light distribution at photodetector surface has been proposed. To test estimator performance, module with <inline-formula...
The design of detectors for radio-imaging small animals is challenging because the high spatial resolution required, possibly coupled with efficiency to allow dynamic studies. Spatial and sensitivity are difficult attain at same time single photon imaging techniques collimators define limit performance. In this paper we first describe a simple desktop gamma imager equipped pinhole collimator based on pixellated NaI(Tl) scintillator array Hamamatsu R2486 PSPMT. limits such system as well way...
A new gamma camera dedicated to scintimammography (single photon emission mammography-SPEM) now has a full-breast field of view. One can clinically examine mildly compressed breast with cranio-caudal-like projection as one would in X-ray mammography. This is based on pixelated scintillation arrays and position sensitive photomultiplier tubes. By reducing the collimator-tumor distance, we enhanced geometric spatial resolution contrast. Unfortunately, due low counting rates scintimammography,...
Many modern molecular imaging techniques, based on radiopharmaceuticals, can take advantage of sophisticated devices but are still the scintillation detector mechanism proposed by Anger. These perform with millimeter spatial resolution and high detection efficiency, final performance is strongly affected algorithm used for position detection. In this work, a detailed comparison effect performances three new algorithms, in terms resolution, linearity useful Field View performed prototype...
In the last few years, integrated multi-modality systems have been developed, aimed at improving accuracy of medical diagnosis correlating information from different imaging techniques. this contest, a novel dual modality probe is proposed, based on an ultrasound detector with small field view single photon emission gamma camera. The probe, dedicated to visualize organs or tissues located short depths, performs images and permits correlate morphological functional information. camera...