Dr
Sueki Baba
(Beamsense Co. Ltd. Japan)
06/09/2012, 15:10
X-ray imaging applications - Material Science
POSTER
Since polymers mainly consist of the light atomic elements, the transmission of polymers against X-rays is usually too high to be visualized in X-ray microscopy, and hence, it has been considered that the polymers are not suitable for the X-ray computerized tomography (XCT). We calculate the X-ray absorption coefficients of various polymers and find the reasonably good conditions for the XCT...
YU-XIANG GUAN
(National Yang-Ming University)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
Introduction: In cardiac PET/CT, coronal calcium scoring CT (CCSCT) not only is a noninvasive assessment of the presence and location of calcified plaque but also could provide as attenuation correction (AC) maps. However, the optimal radiation dose saving of CCSCT scan has not been studied. The purpose of this study is to determine optimum imaging parameters for attenuation correction in...
Mr
Yang-Hsien Lin
(Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
Introduction: In the fields of heart failure diagnosis, expect for the evaluation of heart valve abnormality, the myocardial wall motion is another important indication which has been concluded in many studies. Cardiovascular magnetic resonance (CMR) imaging provides highly reproducible data of myocardial deformation. Recently, the cardiac computed tomography (CT) imaging technique has become...
Prof.
Tung-Hsin Wu
(Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
Purpose: The solid-state detector is the novel γ-camera to reduce patient’s imaging time and radiation dosage in nuclear cardiology. However, there was a discrepancy of optimal acquisition protocol between Thallium-201 and Tc-99m radionuclide in many literatures. The aim of this study was to compare new ultrafast cadmium-zinc-telluride (CZT) camera with conventional SPECT using anthropomorphic...
Yasuaki Nakamura
(Univ. of Tokyo)
06/09/2012, 15:10
X-ray imaging applications - Astronomy
POSTER
We are constructing an endoscope coupled with radiation detector, and its real time radiation imaging system. The imaging system is based on Compton camera composed of a digital signal-processing unit with ASIC and FPGA and reconstruction algorithm using spherical harmonics that can compute in real time. Acquired data are immediately transferred to a host PC and computed by a reconstruction...
Mr
Motohiko Omodani
(Japan Synchrotron Radiation Research Institute)
06/09/2012, 15:10
X-ray imaging applications - Material Science
POSTER
SPring-8 Angstrom Compact free-electron LAser (SACLA), which is the second X-ray free-electron laser (XFEL) facility after LCLS at SLAC National Accelerator Laboratory achieved laser amplification on June 7th, 2011. In the first user run of SACLA starting in March 2012, 25 proposals from domestic/international institutions will be conducted, where more than half of the proposals will use the...
Takayoshi Kohmura
(Kogakuin University)
06/09/2012, 15:10
X-ray imaging applications - Astronomy
POSTER
Since an X-ray CCD, especially a Back-Illuminated-CCD (BI-CCD), has a high detection efficiency for UV light and visible light as well as soft X-ray, it is necessary for the X-ray CCD on board X-ray satellite to block visible light and UV light that become background.
The X-ray CCD cameras on board previous X-ray satellites, Suzaku, Chandra and so on, are equipped with the Optical...
Dr
Ryun Kyung Kim
(Korea Electrotechnology Research Institute (KERI))
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
We demonstrate an x-ray detector with dual amorphous-Selenium (a-Se) layer using optical switching readout for high-speed x-ray imaging. The x-ray detector consists of a negative voltage bias electrode, a thick a-Se layer for photoelectric conversion of x-ray photons, an As2Se3 layer as an electron-trapping layer for accumulating a latent image, a thin a-Se layer for optical readout, an...
Jan Buytaert
(CERN)
06/09/2012, 15:10
Data reconstruction and algorithms - Pattern recognision and imaging
POSTER
An accurate description of the geometry and material density in modern particle detectors becomes ever more critical as the mass of these devices decreases, and the detectors aim to be sensitive to low pt physics. An example in point is the LHCb VELO upgrade, where the pixel planes at the upgrade will be situated very close to the beam line, but separated from the primary vacuum by a thin...
Dr
Roberto Dinapoli
(Paul Scherrer Institut)
06/09/2012, 15:10
X-ray imaging applications - Material Science
POSTER
The SLS Detector group at PSI has developed GOTTHARD, a charge integrating silicon strip detector which, thanks to the automatic
gain switching feature, can provide at the same time single photon resolution and a dynamic range as big as 10000 12~keV photons, with a noise well below the photon statistics limit over the full range.
The detector module is made of ten readout ASIC (Application...
Richard Bates
(University of Glasgow (GB))
06/09/2012, 15:10
Ultra light mechanics and cooling
POSTER
For the proposed upgraded pixel and strip detector systems of the ATLAS experiment on the HL-LHC near all carbon support structures are a candidate. These consist of two low-density carbon fibre reinforced polymer (CFRP) sheets (low areal weight), consisting of ultra-high modulus fibres, with metallic cooling tubes filled with refrigerant sandwiched between them. Low-density carbon foam is...
Dr
Antonio Javier Gonzalez Martinez
(Institute of Instrumentation for Molecular Imaging)
06/09/2012, 15:10
X-ray imaging applications - Material Science
POSTER
In this work we present a method to efficiently collect scintillation light at the time to reduce photosensor active area. We have applied this procedure on gamma detectors for PET devices based on continuous crystals and SiPM detectors.
The use of continuous scintillation crystals preserves the spatial distribution of scintillation light for each γ-ray event, which can be reconstructed...
YU-XIANG GUAN
(National Yang-Ming University)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
Objective: To determine the optimal image reconstruction windows in the assessment of coronary artery bypass grafts (CABGs) with 256-slice CT, and to assess their associated optimal ECG pulsing windows for tube-current modulation (ETCM).
Methods: We recruited 18 patients (three female; mean age 68.9 years) having mean heart rate (HR) of 66.3 bpm and a heart rate variability of 1.3 bpm for...
Prof.
Tung-Hsin Wu
(Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
Purpose: Positron emission tomography (PET) imaging performance is limited by a number of physical, acquisition, and dosimetric constraints. To gain a thorough understanding of this issue, multivariate analysis was used to investigate the simultaneous effects of changes in these factors. This study investigated the relationship among the small animal imaging protocol, imaging performance, and...
Mr
Shoma Ikeda
(Kogakuin University)
06/09/2012, 15:10
X-ray imaging applications - Astronomy
POSTER
We have developed the back-illuminated X-ray CCD camera (BI-CCD) for Soft X-ray Imager (SXI) onboard ASTRO-H. Since the X-ray CCD, especially BI- CCD has a high sensitivity not only for in X-ray but also in both visible light and UV light, X-ray CCD for SXI is directly coated the 100nm thick aluminum on the surface of the CCD in order to block visible light, and we name this aluminum layer OBL...
Martin Bednarzik
(Paul Scherrer Institut, Laboratory for Micro- and Nanotechnology, 5232 Villigen PSI, Switzerland)
06/09/2012, 15:10
X-ray imaging applications - Astronomy
POSTER
The STIX (Spectrometer Telescope for Imaging X-rays) instrument will be used on board the Solar Orbiter space mission to perform X-ray imaging and spectroscopy of solar flares. STIX is one of 10 instruments of the confirmed M-class mission of the European Space Agency (ESA) to be launched in 2017. The imaging is realized by a Fourier-imaging technique using tungsten grid collimators in front...
Dr
Bo Kyung Cha
(KERI)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
In recent years, direct conversion flat-panel X-ray imaging detectors have been researched and used in various medical applications such as chest radiography, mammography and fluoroscopy imaging. In direct detection method, an X-ray photoconductor is used as a conversion material to transform the absorbed X-ray photons to electrical charge, which carries the corresponding signal. In addition...
Mr
Yang-Hsien Lin
(Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
Background: Central obesity in relation to insulin resistance is strongly linked to the development of diabetes. However, data regarding the association between peri-cardial and peri-aortic fat amount, a real estimate of visceral adipose tissue and pre-diabetes status remained elusive.
Objective: The aim of this study was to examine whether pericardial and thoracic peri-aortic adipose...
Dr
Ryan Page
(University of Bristol)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
R. Page, for the BEAMView collaboration
Abstract
1 Introduction
The use of Intensity Modulated Radiotherapy (IMRT) for cancer treatments is entering wider use. These treatments involve using a complex configuration of field modifying components, known as Multileaf Collimators (MLC), to dynamically shape the beam. A treatment consists of a sequence of irregular shaped fields, which...
Dr
Bo Kyung Cha
(KERI)
06/09/2012, 15:10
X-ray imaging applications - Medicine
POSTER
In recent years, CMOS(Complementary metal oxide semiconductor)-based X-ray imagers have been researched and used for high resolution and real time X-ray imaging application. The CMOS image sensor has many advantages such as the higher readout speed, low noise and high system integration compared to amorphous silicon flat panel detector. Besides the lower noise and higher speed, the smaller...
