Results 61 to 70 of about 1,069,547 (329)

Reproducibility of Quantitative Brain Imaging Using a PET-Only and a Combined PET/MR System

Frontiers in Neuroscience, 2017
The purpose of this study was to test the feasibility of migrating a quantitative brain imaging protocol from a positron emission tomography (PET)-only system to an integrated PET/MR system.
Martin L. Lassen, Otto Muzik, Thomas Beyer, Marcus Hacker, Claes Nøhr Ladefoged, Jacobo Cal-González, Wolfgang Wadsak, Wolfgang Wadsak, Ivo Rausch, Oliver Langer, Oliver Langer, Oliver Langer, Martin Bauer   +12 more
doaj   +1 more source

Developing quality assurance tests for simultaneous Positron Emission Tomography – Magnetic Resonance imaging for radiotherapy planning

Physics and Imaging in Radiation Oncology, 2022
Background and purpose: Simultaneous Positron Emission Tomography – Magnetic Resonance (PET-MR) imaging can potentially improve radiotherapy by enabling more accurate tumour delineation and dose painting.
Jonathan J. Wyatt, Hazel M. McCallum, Ross J. Maxwell   +2 more
doaj   +1 more source

Respiratory Motion Detection and Correction for MR Using the Pilot Tone: Applications for MR and Simultaneous PET/MR Examinations.

Investigative Radiology, 2019
OBJECTIVES The aim of this study was to develop a method for tracking respiratory motion throughout full MR or PET/MR studies that requires only minimal additional hardware and no modifications to the sequences.
T. Vahle, Mario Bacher, D. Rigie, M. Fenchel, P. Speier, J. Bollenbeck, K. Schäfers, B. Kiefer, F. Boada   +8 more
semanticscholar   +1 more source

Moyamoya Disease and the Risk of Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Moyamoya disease (MMD) is a rare cerebrovascular disorder characterized by the progressive narrowing of arteries at the base of the brain, forming abnormal collateral vascular networks. While vascular parkinsonism is noted in MMD, its link to Parkinson's disease (PD) has not been explored.
Dallah Yoo, Jeong‐Yong Shin, Rugyeom Lee, Jiwon Cheon, Ji Hun Kim, Doeun Kim, Jae‐Kyung Won, In‐Hwan Oh, Yunjong Lee, Tae‐Beom Ahn   +9 more
wiley   +1 more source

Quantitative biparametric analysis of hybrid 18F-FET PET/MR-neuroimaging for differentiation between treatment response and recurrent glioma [PDF]

, 2019
We investigated the diagnostic potential of simultaneous 18F-FET PET/MR-imaging for differentiation between recurrent glioma and post-treatment related effects (PTRE) using quantitative volumetric (3D-VOI) lesion analysis.
Bohner, Georg, Brenner, Winfried, Hamm, Bernd, Lohmeier, Johannes, Makowski, Marcus R., Siebert, Eberhard   +5 more
core   +1 more source

Amelanotic melanoma detected by 18F-FDG PET-CT

The Egyptian Journal of Radiology and Nuclear Medicine
Background Amelanotic/hypomelanotic melanoma is an extremely rare cancer and accounts for less than 1/10,000 in the population. For losing and hypomelanotic pigment, amelanotic melanoma can lead to misdiagnosis with benign skin lesions.
Ningning Chen, Xin Liu, Yongzhu Pu, Chengtao Feng, Fake Yang, Conghui Yang, Long Chen   +6 more
doaj   +1 more source

Cerebral metabolism and perfusion in MR-negative individuals with refractory focal epilepsy assessed by simultaneous acquisition of 18F-FDG PET and arterial spin labeling

NeuroImage: Clinical, 2016
The major challenge in pre-surgical epileptic patient evaluation is the correct identification of the seizure onset area, especially in MR-negative patients.
Ilaria Boscolo Galazzo, Maria Vittoria Mattoli, Francesca Benedetta Pizzini, Enrico De Vita, Anna Barnes, John S. Duncan, Hans Rolf Jäger, Xavier Golay, Jamshed B. Bomanji, Matthias Koepp, Ashley M. Groves, Francesco Fraioli   +11 more
doaj   +1 more source

Diagnostic Value of Delayed PET/MR in Liver Metastasis in Comparison With PET/CT

Frontiers in Oncology, 2021
ObjectivesThe aim of this study was to evaluate the value of a delayed positron emission tomography/magnetic resonance (PET/MR) scan relative to a single positron emission tomography/computed tomography (PET/CT) scan for liver metastasis detection ...
Nina Zhou, Xiangxi Meng, Yan Zhang, Boqi Yu, Jianmin Yuan, Jiangyuan Yu, Hua Zhu, Zhi Yang   +7 more
doaj   +1 more source

CSF Levels of NPTX2 Are Associated With Less Brain Atrophy Over Time in Cognitively Unimpaired Individuals

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez, Corinne Pettigrew, Yuxin Zhu, Claire Anderson, Guray Erus, Christos Davatzikos, Michael Miller, Abhay Moghekar, Sungtaek Oh, Chan‐Hyun Na, Marilyn Albert, Paul Worley, Anja Soldan   +12 more
wiley   +1 more source

Resolution improvement of brain PET images using prior information from MRI: clinical application on refractory epilepsy [PDF]

, 2015
An important counterpart of clinical Positron Emission Tomography (PET) for early diagnosis of neurological diseases is its low resolution. This is particularly important when evaluating diseases related to small hypometabolisms such as epilepsy.
Aguiar, P, Cortes, J, Silva-Rodríguez, J, Tsoumpas, C, Urdaneta, J   +4 more
core   +1 more source