Pardis Ghafarian
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Explore the profile of Pardis Ghafarian including associated specialties, affiliations and a list of published articles.
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Articles
34
Citations
178
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Recent Articles
11.
Kashian E, Ahangari H, Dehlaghi V, Khoshgard K, Ghafarian P, Ghorbani R
World J Nucl Med
. 2021 Feb;
19(4):366-375.
PMID: 33623506
The aim of this study is to simulate GE Discovery 690 VCT positron emission tomography/computed tomography (PET/CT) scanner using Geant4 Application for Tomographic Emission (GATE) simulation package (version 8). Then,...
12.
Shiri I, Arabi H, Geramifar P, Hajianfar G, Ghafarian P, Rahmim A, et al.
Eur J Nucl Med Mol Imaging
. 2020 May;
47(11):2533-2548.
PMID: 32415552
Objective: We demonstrate the feasibility of direct generation of attenuation and scatter-corrected images from uncorrected images (PET-nonASC) using deep residual networks in whole-body F-FDG PET imaging. Methods: Two- and three-dimensional...
13.
Emami A, Ghadiri H, Ghafarian P, Geramifar P, Ay M
Jpn J Radiol
. 2020 Apr;
38(8):790-799.
PMID: 32253654
Purpose: Molecular imaging, particularly PET scanning, has become an important cancer diagnostic tool. Whole-body PET is not effective for local staging of cancer because of their declining efficiency in detecting...
14.
Rezaei S, Ghafarian P, Bakhshayesh-Karam M, Uribe C, Rahmim A, Sarkar S, et al.
Jpn J Radiol
. 2020 Jan;
38(3):231-239.
PMID: 31894449
Objectives: The present study aims to assess the impact of acquisition time, different iterative reconstruction protocols as well as image context (including contrast levels and background activities) on the measured...
15.
Rezaei S, Ghafarian P, Jha A, Rahmim A, Sarkar S, Ay M
Phys Med
. 2019 Nov;
68:52-60.
PMID: 31743884
Objectives: We aim to develop and rigorously evaluate an image-based deconvolution method to jointly compensate respiratory motion and partial volume effects (PVEs) for quantitative oncologic PET imaging, including studying the...
16.
Amirrashedi M, Sarkar S, Ghafarian P, Shahraki R, Geramifar P, Zaidi H, et al.
Med Phys
. 2019 Aug;
46(11):4816-4825.
PMID: 31448421
Purpose: Xtrim-PET is a newly designed Silicon Photomultipliers (SiPMs)-based prototype PET scanner dedicated for small laboratory animal imaging. We present the performance evaluation of the Xtrim-PET scanner following NEMA NU-4...
17.
Shiri I, Ghafarian P, Geramifar P, Leung K, Ghelichoghli M, Oveisi M, et al.
Eur Radiol
. 2019 Jun;
29(12):6867-6879.
PMID: 31227879
Objective: To obtain attenuation-corrected PET images directly from non-attenuation-corrected images using a convolutional encoder-decoder network. Methods: Brain PET images from 129 patients were evaluated. The network was designed to map...
18.
Ketabi A, Ghafarian P, Mosleh-Shirazi M, Mahdavi S, Rahmim A, Ay M
Eur Radiol
. 2018 Oct;
29(4):2146-2156.
PMID: 30280249
Objective: This study aims to assess the impact of different image reconstruction methods on PET/CT quantitative volumetric and textural parameters and the inter-reconstruction variability of these measurements. Methods: A total...
19.
Shirin Shandiz M, Rad H, Ghafarian P, Yaghoubi K, Ay M
Mol Imaging
. 2018 Aug;
17:1536012118789314.
PMID: 30064303
Purpose: Prostate imaging is a major application of hybrid positron emission tomography/magnetic resonance imaging (PET/MRI). Currently, MRI-based attenuation correction (MRAC) for whole-body PET/MRI in which the bony structures are ignored...
20.
Hemmati H, Kamali-Asl A, Ghafarian P, Ay M
Ann Nucl Med
. 2018 Jun;
32(7):474-484.
PMID: 29931622
Attenuation correction is known as a necessary step in positron emission tomography (PET) system to have accurate and quantitative activity images. Emission-based method is known as a promising approach for...