2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)最新文献_第7页

Upgrade of the Minos+ experiment data acquisition for the high energy NuMI beam run 高能NuMI束流运行中Minos+实验数据采集的升级

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431144

W. Badgett, S. Hahn, D. Torretta, J. Meier, J. Gunderson, Denise Osterholm, David Saranen

{"title":"Upgrade of the Minos+ experiment data acquisition for the high energy NuMI beam run","authors":"W. Badgett, S. Hahn, D. Torretta, J. Meier, J. Gunderson, Denise Osterholm, David Saranen","doi":"10.1109/NSSMIC.2014.7431144","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7431144","url":null,"abstract":"The Minos+ experiment is an extension of the Minos experiment at a higher energy and more intense neutrino beam, with the data collection having begun in the fall of 2013. The neutrino beam is provided by the Neutrinos from the Main Injector (NuMI) beam-line at Fermi National Accelerator Laboratory (Fermilab). The detector apparatus consists of two main detectors, one underground at Fermilab and the other in Soudan, Minnesota with the purpose of studying neutrino oscillations at a base line of 735 km. The original data acquisition system has been running for several years collecting data from NuMI, but with the extended run from 2013, parts of the system needed to be replaced due to obsolescence, reliability problems, and data throughput limitations. Specifically, we have replaced the front-end readout controllers, event builder, and data acquisition computing and trigger processing farms with modern, modular and reliable devices with few single points of failure. The new system is based on gigabit Ethernet TCP/IP communication to implement the event building and concatenation of data from many front-end VME readout crates. The simplicity and partitionability of the new system greatly eases the debugging and diagnosing process. The new system improves throughput by about a factor of three compared to the old system, up to 800 megabits per second, and has proven robust and reliable in the current run.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115488779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of a Timepix detector-based hodoscope for the measurement of mixed radiation fields 用于测量混合辐射场的Timepix探测器的hodoscope的特性

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431064

I. Caicedo, B. Bergmann, M. Králík, V. Kraus, C. Leroy, S. Pospíšil, M. Suk, Z. Vykydal

引用次数: 1

A novel brain PET insert for the MINDView project 一个新的脑PET插入为MINDView项目

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7430885

Antonio J. González, F. Sánchez, P. Conde, S. Aussenhofer, D. Gareis, R. Pani, R. Pellegrini, M. Bettiol, A. Fabbri, S. Majewski, Christopher Bauer, A. Stolin, P. Martone, J. Bert, D. Visvikis, C. Jackson, John Murphy, K. O'Neill, J. Benlloch

{"title":"A novel brain PET insert for the MINDView project","authors":"Antonio J. González, F. Sánchez, P. Conde, S. Aussenhofer, D. Gareis, R. Pani, R. Pellegrini, M. Bettiol, A. Fabbri, S. Majewski, Christopher Bauer, A. Stolin, P. Martone, J. Bert, D. Visvikis, C. Jackson, John Murphy, K. O'Neill, J. Benlloch","doi":"10.1109/NSSMIC.2014.7430885","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7430885","url":null,"abstract":"The Multimodal Imaging of Neurological Disorders (MINDview) project aims to develop a high resolution and sensitivity dedicated brain Positron Emission Tomography (PET) system capable of visualizing neurotransmitter pathways and their disruptions for mental disorders for diagnosis and treatment follow-up. Moreover, this compact PET system should be fully compatible with a Magnetic Resonance Imaging (MRI) system in order to allow its operation as a brain insert in a hybrid imaging setup with most MRI scanners. The proposed design will enable current installed MRI base to be easily upgraded to PET/MRI systems. The current design for the PET insert consists of a 3 rings configuration, 20 modules per ring, with an axial field of view of ~15 cm and a geometrical aperture of ~33 cm in diameter. When coupled to the new head Radio Frequency (RF) coil, the inner diameter of the complete PET-RF coil insert is reduced to 26 cm. Main features of the PET detector insert for the MINDView project in terms of its overall design, electronic readout, and MRI compatibility will be presented. In addition, the main parameters of the PET detector insert, such as expected spatial and energy resolution, depth of interaction (DOI) capabilities and sensitivity will be discussed in terms of the different approaches considered so far for the construction of the first MINDView prototype. Laboratory tests results associated with the current MINDView PET module concept in terms of key parameters optimisation such as scintillator crystal, photosensor configuration and signal readout will be also presented.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124240442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Nanopattern multi-well avalanche selenium detector with picosecond time resolution 皮秒时间分辨率的纳米多孔雪崩硒探测器

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431215

A. Goldan, J. Rowlands, Ming Lu, Wei Zhao

引用次数: 3

Feasibility of secondary 15O beam production for in-beam PET 梁内PET二次15O梁生产的可行性

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431003

A. Mohammadi, Y. Hirano, F. Nishikido, E. Yoshida, A. Kitagawa, T. Inaniwa, T. Yamaya

{"title":"Feasibility of secondary 15O beam production for in-beam PET","authors":"A. Mohammadi, Y. Hirano, F. Nishikido, E. Yoshida, A. Kitagawa, T. Inaniwa, T. Yamaya","doi":"10.1109/NSSMIC.2014.7431003","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7431003","url":null,"abstract":"For the purpose of in situ visualization of an irradiation field in particle therapy, it is ideal to use radioactive beams for in-beam positron emission tomography (PET) imaging. In the Heavy Ion Medical Accelerator in Chiba (HIMAC), there is a beam course to produce 11C and 10C as secondary beams, but generation of 15O has never been investigated. This study was devoted to analysis of the feasibility of secondary 15O production for in-beam PET by 16O primary beam in different absorbing materials (targets) with various thicknesses in order to find out the optimum target material and its thickness. The study was performed using analytical method, LISE++ code, and the Monte Carlo method, PHITS code. The calculation results showed that the highest intensity of the secondary 15O beam observed for primary 16O beam decelerating in liquid hydrogen but practically almost impossible to apply. The final optimum target was considered to be polyethylene with thickness of 11 cm. The 15O beam was produced in the HIMAC secondary beam line using the optimum target and the in-beam PET imaging was presented for a PMMA phantom irradiated with the produced beam.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124563542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Efficient time-weighted sensitivity image calculation for motion compensated list mode reconstruction 运动补偿列表模式重构的高效时间加权灵敏度图像计算

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7430947

G. Angelis, J. Gillam, W. Ryder, A. Kyme, R. Fulton, S. Meikle

{"title":"Efficient time-weighted sensitivity image calculation for motion compensated list mode reconstruction","authors":"G. Angelis, J. Gillam, W. Ryder, A. Kyme, R. Fulton, S. Meikle","doi":"10.1109/NSSMIC.2014.7430947","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7430947","url":null,"abstract":"Accurate motion compensated image reconstruction of freely moving small animals requires the exact calculation of the time-weighted sensitivity correction factors. Back-projection of all possible lines of response for every recorded pose is a computationally intensive task, which requires impractically long reconstruction times. In this work we investigated an approach to accelerate this task, by randomly sampling the lines of response and the poses that are used to calculate the time-averaged sensitivity image. Two phantom datasets, acquired on the microPET Focus220 scanner, were used to quantify errors introduced in the randomly sampled sensitivity images and propagated to the final reconstructed images. In addition, the qualitative performance of the proposed methodology was assessed by reconstructing a freely moving rat acquisition. Results showed that randomisation can severely amplify the noise in the reconstructed images, especially when few LORs are sampled. However, such errors can be suppressed by post-filtering the randomised sensitivity images prior to reconstruction (e.g. 2 mm FHWM). Such an approach can substantially reduce the computational time involved during the estimation of the time-averaged sensitivity image for motion compensated image reconstruction.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114354151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Study on the conformal conversion in the Open Electrical Impedance Tomography 开放式电阻抗层析成像中共形变换的研究

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7430817

P. Yan, J. Yao, R. A. Payne, H. Jia, L. Jin

引用次数: 0

The LHCb Vertex Locator upgrade LHCb顶点定位器升级

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431238

P. Tsopelas

{"title":"The LHCb Vertex Locator upgrade","authors":"P. Tsopelas","doi":"10.1109/NSSMIC.2014.7431238","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7431238","url":null,"abstract":"The upgrade of the LHCb experiment, planned for 2018, will transform the experiment to a trigger-less system reading out the full detector at 40 MHz event rate with all data reduction algorithms executed in high level software on a computing farm. The Vertex Locator (VELO) detector which surrounds the interaction region is used to reconstruct primary and secondary vertices and measure the flight distance of long-lived particles. The upgraded VELO will be a hybrid pixel detector read out by the VeloPix ASIC with on-chip zero-suppression. The hottest region will have peak pixel hit rates of 900 Mhits/s yielding a total data rate more than 3 Tbit/s for the upgraded VELO. The data will be read out on high-speed electrical and optical serial links. The detector modules are located in a secondary vacuum, separated from the beam vacuum by a thin custom made foil. The detector halves are retracted during injection of the LHCb beams and closed when the beams are declared stable. In the closed position the innermost sensitive pixels are at 5.1 mm from the beams. The material budget will be minimised by the use of evaporative CO2 coolant circulating in micro channels within 400 μm thick silicon substrates. Microchannel cooling brings many advantages: very efficient heat transfer with almost no temperature gradients across the module, no CTE mismatch with silicon components, and low material contribution. The current status of the VELO upgrade will be described together with a presentation of recent test results.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114543096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Design and characterization of the ePix100a: A low noise integrating pixel ASIC for LCLS detectors 用于LCLS检测器的低噪声集成像素专用集成电路ePix100a的设计与特性

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431230

B. Markovic, A. Dragone, P. Caragiulo, R. Herbst, K. Nishimura, B. Reese, S. Herrmann, P. Hart, G. Blaj, J. Segal, A. Tomada, J. Hasi, G. Carini, C. Kenney, G. Haller

引用次数: 10

Population-based functional template priors for regularized PET reconstruction 基于群体的功能模板先验正则化PET重建

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7430938

Philip Novosad, A. Reader

引用次数: 1