Filters








3,254 Hits in 3.3 sec

Software approach to merging molecular with anatomic information

Piotr J Slomka
2004 Journal of Nuclear Medicine  
Potential new applications in cardiology could allow the combination of CT angiography with perfusion and viability images obtained by PET, SPECT, or MRI.  ...  Fully automatic registration algorithms are needed for routine clinical applications.  ...  (B) Subsequent MR evaluation and MRI/PET fusion confirmed PET osseous lesion (arrow).  ... 
pmid:14736834 fatcat:36xbz7we7rew3a6rhiix2bl6qa

An Evaluation of the Benefits of Simultaneous Acquisition on PET/MR Coregistration in Head/Neck Imaging

Serena Monti, Carlo Cavaliere, Mario Covello, Emanuele Nicolai, Marco Salvatore, Marco Aiello
2017 Journal of Healthcare Engineering  
an open-source registration package was evaluated.  ...  Registration accuracy was qualitatively assessed in terms of visual alignment of anatomical structures and qualitatively measured by the Dice scores computed on segmented tumors in PET and MRI.  ...  Acknowledgments This work was partially supported by the RRC-2015-2360454 of the Italian Minister of Health and by the Italian project PON03PE_00128_1 "eHealthNet: Software ecosystem for Electronic Health  ... 
doi:10.1155/2017/2634389 pmid:29076331 fatcat:lwantfjiifajzgimbyelwuceiq

Software-based PET-MR image coregistration: combined PET-MRI for the rest of us!

Matthew S. Robertson, Xinyang Liu, William Plishker, George F. Zaki, Pranav K. Vyas, Nabile M. Safdar, Raj Shekhar
2016 Pediatric Radiology  
In addition, we calculated the target registration error as a measure of the quality of image coregistration, and evaluated the algorithm's performance in the context of interexpert variability.  ...  The early adoption of hybrid PET/MRI, however, has been limited.  ...  Validation Our registration algorithm can register MRI to PET or PET to MRI.  ... 
doi:10.1007/s00247-016-3641-8 pmid:27380195 pmcid:PMC5039099 fatcat:zqo2xkve75fbjlej62h7o42hye

18F-FDG-PET and MRI in patients with malignancies of the liver and pancreas

O. F. Donati, C. S. Reiner, T. F. Hany, J. Fornaro, G. K. von Schulthess, B. Marincek, D. Weishaupt
2010 NuclearMedicine  
F-FDG-PET und MRT bei Patienten mit malignen Leber-und Pankreasläsionen -Genauigkeit der retro spektiven PET/MRI-Registrierung durch Verwendung der CT-Komponente der PET/CT  ...  The authors concluded that retrospective PET/MRI fusion is feasible although evaluation did not include a quantitative validation of registration error. Ruf et al.  ...  Summary Purpose: To evaluate the accuracy of retrospective rigid image registration and fusion between F-18 fluorodeoxyglucose positron emission tomography (FDG-PET) and magnetic resonance imaging (MRI  ... 
doi:10.3413/nukmed-0263 pmid:20407733 fatcat:cc7rqpxxafaape2n3ljlhhdtji

Validation of Tsallis Entropy In Inter-Modality Neuroimage Registration [article]

Henrique Tomaz Amaral-Silva, Luiz Otavio Murta-Jr, Paulo Mazzoncini de Azevedo-Marques, Lauro Wichert-Ana, V. B. Surya Prasath, Colin Studholme
2016 arXiv   pre-print
Resonance Imaging (MRI), Positron Emission Tomography (PET) and Computed Tomography (CT) exams registration.  ...  and NMIT with Tsallis parameter close to 1 as the best options (confidence and accuracy) for CT to MRI and PET to MRI automatic neuroimaging registration.  ...  Sinchai Tsao (Biomedical Image Computing Group Department of Pediatrics University of Washington) for their very helpful support during the experiments.  ... 
arXiv:1611.01730v1 fatcat:56ip775xrzhbpexf6ryeytwjka

Image fusion using CT, MRI and PET for treatment planning, navigation and follow up in percutaneous RFA

F L Giesel, A Mehndiratta, J Locklin, M J McAuliffe, S White, P L Choyke, M V Knopp, B J Wood, U Haberkorn, H von Tengg-Kobligk
2009 Experimental oncology  
Multi-modality datasets were separately acquired that included functional (FDG-PET and DCE-MRI) and standard morphologic studies (CT and MRI).  ...  For routine use, the semi-automated registration algorithms may be most practical. Image fusion may facilitate interventional procedures like RFA and should be further evaluated.  ...  Acknowledgments This work was supported in part by the Intramural Research Program of the NIH.  ... 
pmid:19550401 pmcid:PMC2850071 fatcat:xevp4z74ange5izlkcvvgwtzv4

Improved PET/MRI attenuation correction in the pelvic region using a statistical decomposition method on T2-weighted images

Elin Wallstén, Jan Axelsson, Joakim Jonsson, Camilla Thellenberg Karlsson, Tufve Nyholm, Anne Larsson
2020 EJNMMI Physics  
In this study, we evaluated the application of SDA for attenuation correction of PET images in the pelvic region.  ...  Background Attenuation correction of PET/MRI is a remaining problem for whole-body PET/MRI.  ...  Acknowledgements The authors would like to thank Spectronic Medical AB for giving access to the software evaluated in this paper.  ... 
doi:10.1186/s40658-020-00336-5 pmid:33226495 fatcat:7t5hhtu5jvabzffetaylplal7a

Value of Retrospective Fusion of PET and MR Images in Detection of Hepatic Metastases: Comparison with 18F-FDG PET/CT and Gd-EOB-DTPA-Enhanced MRI

O. F. Donati, T. F. Hany, C. S. Reiner, G. K. von Schulthess, B. Marincek, B. Seifert, D. Weishaupt
2010 Journal of Nuclear Medicine  
MRI, and retrospectively fused PET and MRI (PET/MRI).  ...  PET and Gd-EOB-DTPA-enhanced MR image data were retrospectively fused.  ...  In our study, we used an automatic quaternionbased algorithm for rigid registration.  ... 
doi:10.2967/jnumed.109.068510 pmid:20395324 fatcat:rkzmt6h3hveobpvonlz3qcmxsi

Does PET/CT render software registration obsolete?

U. Pietrzyk
2005 NuclearMedicine  
The major advantage of combined imaging over retrospective software registration is the nearly identical position of the patient during both complementary examination, and therefore tomograms of identical  ...  Summary:It was the success of software-based image registration that eventually led to the introduction of hardware-based concepts for image fusion, such as combined PET/CT tomographs.  ...  Acknowledgement Part of this work wassupported by agrant by the DFG BE 3169/2-2.  ... 
doi:10.1055/s-0038-1625209 fatcat:5jdykye7prbq7oxtdpycpovco4

Comparative Study of Relevant Methods for MRI/X Brain Image Registration [chapter]

Marwa Abderrahim, Abir Baâzaoui, Walid Barhoumi
2020 Lecture Notes in Computer Science  
Most traditional registration tools use different methods for mono-and multi-modal registration, whereas the hybrid registration method is providing both mono and multi-modal brain registration of PET,  ...  MRI and CT images.  ...  The first dataset, from the Retrospective Image Registration Evaluation (RIRE) project [17] , consists of eight 3D triplets of PET, MRI and CT images of brain.  ... 
doi:10.1007/978-3-030-51517-1_30 fatcat:yna3jmmavvgt7apvcyy4yrbxqq

Quantitative analysis of MRI-guided attenuation correction techniques in time-of-flight brain PET/MRI

Abolfazl Mehranian, Hossein Arabi, Habib Zaidi
2016 NeuroImage  
The performance of the different AC algorithms in terms of prediction of bones and quantification of PET tracer uptake was objectively evaluated with respect to reference CTAC maps and CTAC-PET images.  ...  context of brain time-of-flight (TOF) PET/MRI.  ...  Materials and methods PET/CT and MRI data acquisition PET/CT and MRI brain datasets of 14 patients (64.6 ± 11.7 years) from Geneva University Hospital were retrospectively employed for the quantitative  ... 
doi:10.1016/j.neuroimage.2016.01.060 pmid:26853602 fatcat:e7bb4xtnq5gxtghv4rhlsv2ela

Quantitative comparison of automatic and interactive methods for MRI-SPECT image registration of the brain based on 3-dimensional calculation of error

T Pfluger, C Vollmar, A Wismüller, S Dresel, F Berger, P Suntheim, G Leinsinger, K Hahn
2000 Journal of Nuclear Medicine  
A wide range of techniques for registration of medical images has been devised in recent years.  ...  The aim of this study is to quantify the overall spatial registration error of 3 different methods for image registration: interactive matching, surface matching, and uniformity index matching as described  ...  Black et al. (19) investigated MRI-PET image registration of monkey brains and found an error of 2.4 mm for Woods' algorithm. Turkington et al.  ... 
pmid:11079489 fatcat:iitjlevh2bfybpqkyb4luv45by

Acceptance Test of a Commercially Available Software for Automatic Image Registration of Computed Tomography (CT), Magnetic Resonance Imaging (MRI) And 99mTc-methoxyisobutylisonitrile (MIBI) Single-Photon Emission Computed Tomography (SPECT) Brain Images

Gianfranco Loi, Marco Dominietto, Irene Manfredda, Eleonora Mones, Alessandro Carriero, Eugenio Inglese, Marco Krengli, Marco Brambilla
2007 Journal of digital imaging  
Thus, the evaluation of robustness was restricted to the algorithm of MI both for CT-MRI and CT-SPECT registrations.  ...  Algorithms evaluated were local correlation (LC) for CT-MRI, normalized mutual information (MI) for CT-MRI, and CT-SPECT registrations.  ...  Thus, the evaluation of robustness was restricted to the algorithm of mutual information for both CT-MRI and CT-SPECT registrations.  ... 
doi:10.1007/s10278-007-9042-7 pmid:17549564 pmcid:PMC3043840 fatcat:br5gm6gdhbhoveovhbtq3bve4m

Impact of contouring methods on pre-treatment and post-treatment dosimetry for the prediction of tumor control and survival in HCC patients treated with selective internal radiation therapy

Guillaume Nodari, Romain Popoff, Jean Marc Riedinger, Olivier Lopez, Julie Pellegrinelli, Inna Dygai-Cochet, Claire Tabouret-Viaud, Benoit Presles, Olivier Chevallier, Sophie Gehin, Matthieu Gallet, Marianne Latournerie (+4 others)
2021 EJNMMI Research  
Target volumes were delineated using two methods: MRI-based contours manually drawn by a radiologist and then registered on SPECT/CT and PET/CT via deformable registration (Pre-CMRI and Post-CMRI), 99mTc-MAA-SPECT  ...  Introduction The aim of this study was to evaluate the impact of the contouring methods on dose metrics and their predictive value on tumor control and survival, in both situations of pre-treatment and  ...  Deformable registrations were performed by a trained Medical Physicist with the help of a multi-modality deformable registration algorithm available in MIM SurePlan (v7.0.1; MIM software Cleveland, USA  ... 
doi:10.1186/s13550-021-00766-x pmid:33687596 fatcat:6adkj5f6afhkznyxm7ewnmgf4e

Automated 3-dimensional registration of stand-alone (18)F-FDG whole-body PET with CT

Piotr J Slomka, Damini Dey, Christian Przetak, Usaf E Aladl, Richard P Baum
2003 Journal of Nuclear Medicine  
Image registration and fusion of whole-body (18)F-FDG PET with thoracic CT would allow combination of anatomic detail from CT with functional PET information, which could lead to improved diagnosis or  ...  PET-based radiotherapy planning.  ...  We evaluated the PET/CT registration algorithm with a different number of multiresolution steps. Nonlinear Algorithm.  ... 
pmid:12843232 fatcat:ghfbhcz6wrc65lmvs62tzcnfve
« Previous Showing results 1 — 15 out of 3,254 results