Tehran University of Medical Sciences
Office of Vice-Chancellor for Global Strategies & International Affairs
International Human Capacity Development (IHCD)
Code : 9345-353817      Publish Date : Saturday, December 30, 2017 Visit : 1340

Intl. Congress form | International Congress Report | International Congress Report For Faculty | The report of European Association of Nuclear Medicine 2017 by Dr. Mohammad Reza Ay

The report of European Association of Nuclear Medicine 2017 by Dr. Mohammad Reza Ay
The report of European Association of Nuclear Medicine 2017 by Dr. Mohammad Reza Ay
 
Application Code :
762-0217-0097
 
Created Date : Saturday, December 2, 2017-23:22 23:22:30Update Date : Saturday, December 2, 2017-23:37 23:37:07
IP Address : 5.134.197.72Submit Date : Saturday, December 2, 2017-23:37 23:37:21Email :mohammadreza_ay@tums.ac.ir
Personal Information
Name : Mohammad Reza
Surname : AY
School/Research center : School of Medicine
If you choose other, please name your Research center :  
Position : Professor
Tel : +21-664-66383
Information of Congress
Title of the Congress : EANM2017
European Association of Nuclear Medicine 2017
Title of your Abstract : Simultaneous High-Sensitivity High-Resolution Molecular SPECT Imaging with Spinning Slit-Hole Collimator: A Monte Carlo Simulation Study
Destination Country : Austria
From : Saturday, October 21, 2017
To : Wednesday, October 25, 2017
Abstract(Please copy/paste the abstract send to the congress) : Aim: Molecular SPECT imaging is always challenged by acquiring projection data with low statistics, leading to inferior image quality. In this study, we aim at comprehensively evaluating the performance of a novel collimation geometry, the slit-hole, using GATE Monte Carlo simulation. 
Methods: The slit-hole is a long narrow aperture embedded in tungsten body enabling high-sensitivity molecular SPECT. The collimator consists of a 0.6 mm knife-edge slit with 45 mm focal length. As the collimator measures planar projections, it spins at each regular SPECT angles, to ensure sufficient measurement of tomographic data. To assess the performance of this collimation system, a set of phantoms including a dedicated 5-point source and NEMA image quality (IQ) were simulated using the GATE Monte Carlo package. There were 16 spin angles as well as 16 SPECT angles. The planar projection data were also corrected for Compton scattering using a double-energy window method. The emission data acquired by the slit-hole were then reconstructed using an innovative 3D MLEM-based algorithm. Spatially varying system sensitivity was also molded in the reconstruction framework. 
Results: The slit-hole collimated scanner has a sensitivity of 335 cps/MBq at 30 mm distance, corrected for both scatter and background. The sensitivity of the proposed collimator shows a falling trend in field-of-view of the camera, weighted by distance from the aperture’s center. A tomographic resolution of ~1.8 mm was gained at 30 mm radius-of-rotation. This spatial resolution is averaged for the 5 point sources distributed at different locations. Quantitative analyses demonstrated that 3 iterations of the developed algorithms leads to optimally reconstructed SPECT image by obtaining the highest signal-to-noise ratio. An 83% recovery of coefficient was observed for the largest rod in the NEMA IQ phantom. The slit-hole also gives rise to 4.8% image noise level for reconstruction of uniform part the NEMA IQ phantom. 
Conclusion: The slit-hole collimation is a promising alternative to conventional pinhole and parallel-hole collimators for molecular imaging of small animals. The designed aperture shows a different resolution-sensitivity compromise by offering a high-sensitivity while keeping the spatial resolution at an acceptable level. 
Keywords of your Abstract : SPECT, collimator
Acceptance Letter : http://gsia.tums.ac.ir/images/UserFiles/19549/Forms/762/Ay2.pdf
The presentation : eposter
The Cover of Abstract book : http://gsia.tums.ac.ir/images/UserFiles/19549/Forms/762/Cover.pdf
Published abstract in the abstract book with the related code : http://gsia.tums.ac.ir/images/UserFiles/19549/Forms/762/Abstract.pdf
Where has your abstract been indexed? : ISI
If you choose other, please name :  
The Congress Reporting Form
How many volunteers were present at the Congress? : almost 7000
Delegates from which countries presented in the congress? : USA, Swirtzelan, Germany, Finland, UK, Belgium, China, Japan, France, Italy, up to 25 countries
Were the delegates of any other organizations present in the congress? : Yes
If yes, please write the names of the organizations in the box : EANM, SNM
What were the responses to your talking points? Were specific questions or concerns raised? : Yes, Many question asked during presentation. a researcher from Netherlands that had the same topic for her research requested to share with them our experience in order to have joint project. They promised to send us experimental data in order to improve the quality of our research. however my team had 18 contribution in this congress
If you met staff members, please list their full names & positions. : Dr Hassanzadeh
Dr Taghizadeh
Please inform us if there are any follow up actions we need to talk with the members of the congress : there is no specific action that could be follow up. However I personally talked with many researcher and negotiation with them for any possible collaboration. the main potential for collaboration was Dr Hamid Sabet from Harvard that works in our filed. he is really interested to have more collaboration in the field of designing medical imaging systems
Your experiences about the travel processes(Providing ticket, accommodation,...) : I book all hotel and ticket via internet and payidwith credit card
Please give a briefing of your own observations and outcomes of the congress: : in addition to scientific part of the congress that keynote speaker part was really impressive. they actually invited from the most famous persons. the most interesting talk belong to head of EANM and he reviewed the history of nuclear medicine. also the exhibition part of this congress was perfect and I saw all new products. I also talked with may companies and shard our experience. The industrial seminars were good area to see the experience of customers about products. I also got a lots of information to be distributed in our department for both students and faculty members. I also talked with a company for producing their products in Iran that would be good opportunity for both parties.