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Felipe de Galiza Barbosa
University of Zurich
RadiologyPET-CTPositron emission tomographyNuclear medicineMedicine
29Publications
9H-index
184Citations
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Publications 30
Newest
#1Felipe de Galiza Barbosa (UZH: University of Zurich)H-Index: 9
#2Oliver Riesterer (UZH: University of Zurich)H-Index: 18
Last. Patrick Veit-HaibachH-Index: 33
view all 10 authors...
BACKGROUND To determine whether ^{18}F-PET/CT is able to identify treatment response as early as 1 week after the end of chemoradiotherapy, whether ^{18}F-PET/CT can identify prognostic markers concerning progression free survival and can identify patients who need additional consolidation therapy. METHODS A total of 54 patients with head and neck cancer were prospectively enrolled in this single-center, randomized study from 03/2012-04/2015. Patients underwent FDG-PET/CT imaging at three ...
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This article demonstrates the different patterns of dissemination of prostate cancer relapse, presenting the typical sites of disease manifestation and emphasizing the appearance of the increasingl...
1 CitationsSource
#1Urs J. Muehlematter (UZH: University of Zurich)H-Index: 4
#2Hannes W. Nagel (UZH: University of Zurich)H-Index: 4
Last. Irene A. Burger (UZH: University of Zurich)H-Index: 21
view all 9 authors...
Background Accurate attenuation correction (AC) is an inherent problem of positron emission tomography magnetic resonance imaging (PET/MRI) systems. Simulation studies showed that time-of-flight (TOF) detectors can reduce PET quantification errors in MRI-based AC. However, its impact on lesion detection in a clinical setting with 18F-choline has not yet been evaluated. Therefore, we compared TOF and non-TOF 18F-choline PET for absolute and relative difference in standard uptake values (SUV) and ...
1 CitationsSource
#1Michael Messerli (UZH: University of Zurich)H-Index: 7
#2Felipe de Galiza Barbosa (UZH: University of Zurich)H-Index: 9
Last. Patrick Veit-Haibach (UZH: University of Zurich)H-Index: 33
view all 11 authors...
Objective:The purpose of this study was to compare the diagnostic accuracy of positron emission tomography (PET)/MRI with PET/CT for determining tumor resectability of non-small cell lung cancer (NSCLC).Methods:Sequential trimodality PET/CT/MRI was performed in 36 patients referred with the clinical question of resectability assessment in NSCLC. PET/CT and PET/MR images including T1 weighted sequence (T1-Dixon) and respiration gated T2 weighted sequence (T2-Propeller) were evaluated for resectab...
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#2Marcelo A. Queiroz (USP: University of São Paulo)H-Index: 8
Last. Giovanni Guido Cerri (USP: University of São Paulo)H-Index: 30
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Prostate cancer imaging has become an important diagnostic modality for tumor evaluation. Prostate-specific membrane antigen (PSMA) positron emission tomography (PET) has been extensively studied, and the results are robust and promising. The advent of the PET/magnetic resonance imaging (MRI) has added morphofunctional information from the standard of reference MRI to highly accurate molecular information from PET. Different PSMA ligands have been used for this purpose including 68gallium and 18...
2 CitationsSource
#1Marcelo A. Queiroz (USP: University of São Paulo)H-Index: 8
Last. Giovanni Guido Cerri (USP: University of São Paulo)H-Index: 30
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The new technology of PET/MRI is a prototype of hybrid imaging, allowing for the combination of molecular data from PET scanning and morphofunctional information derived from MRI scanning. Recent advances regarding the technical aspects of this device, especially after the development of MRI-compatible silicon photomultipliers of PET, permitted an increase in the diagnostic performance of PET/MRI translated into dose reduction and higher imaging quality. Among several clinical applications, PET/...
1 CitationsSource
#1Tetsuro SekineH-Index: 9
#2Gaspar DelsoH-Index: 23
Last. Patrick Veit-HaibachH-Index: 33
view all 7 authors...
Substantially lower radiation doses compared with those at conventional PET/CT can be achieved in PET/MR imaging with the use of silicon photomultiplier detectors—not only by omitting the CT component, but also by optimizing the use of the PET component.
9 CitationsSource
#1Felipe de Galiza Barbosa (UZH: University of Zurich)H-Index: 9
#2Jan Henning Geismar (UZH: University of Zurich)H-Index: 2
Last. Patrick Veit-HaibachH-Index: 33
view all 7 authors...
Abstract Purpose To prospectively evaluate the detection and conspicuity of pulmonary nodules in an oncological population, using a tri-modality PET/CT-MR protocol including a respiration-gated T2-PROPELLER sequence for possible integration into a simultaneous PET/MR protocol. Methods 149 patients referred for staging of malignancy were prospectively enrolled in this single-center study. Imaging was performed on a tri-modality PET/CT-MR setup and was comprised of PET/CT and 3T-MR imaging with 3D...
3 CitationsSource
#1Edwin E. G. W. ter Voert (UZH: University of Zurich)H-Index: 8
#2Gaspar Delso (GE Healthcare)H-Index: 23
Last. Patrick Veit-Haibach (UZH: University of Zurich)H-Index: 33
view all 5 authors...
Purpose The purpose of this study was to evaluate the effect of defective positron emission tomography (PET) detectors on clinical PET image quality in simultaneous PET/magnetic resonance imaging (MRI) for both time-of-flight (TOF) and non-TOF reconstructed images.
2 CitationsSource
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