Výsledky vyhledávání - "Tobias K. Block"

Radial spoiled gradient T1 weighted imaging of the internal auditory canal: Is Scarpa's ganglion now an expected finding and source of fundal enhancement?

Autor: Kamran Munawar, Eytan Raz, Seena Dehkharghani, Girish M Fatterpekar, Tobias K Block, Yvonne W Lui

Publikováno v: The neuroradiology journal. 35(5)

StarVIBE is a 3D gradient-echo sequence with a radial, stack-of-stars acquisition having spatial resolution and tissue contrast. With newer sequences, it is important to be familiar with sequence tissue contrasts and appearance of anatomical variants

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8d96a3ff21c391738d80e1287ce1410
https://pubmed.ncbi.nlm.nih.gov/35015577

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Respiratory anomalies associated with gadoxetate disodium and gadoterate meglumine: compressed sensing MRI revealing physiologic phenomena during the entire injection cycle

Autor: Tobias Heye, Elmar M. Merkle, Daniel T. Boll, Tobias K. Block, Hanns-Christian Breit, Carl G Glessgen

Publikováno v: European Radiology

Objectives The goal of this study was to investigate the precise timeline of respiratory events occurring after the administration of two gadolinium-based contrast agents, gadoxetate disodium and gadoterate meglumine. Materials and methods This retro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d8fd11336401347fa874467c7a8f08a
http://europepmc.org/articles/PMC8660712

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High spatiotemporal resolution dynamic contrast-enhanced MRI improves the image-based discrimination of histopathology risk groups of peripheral zone prostate cancer: a supervised machine learning approach

Autor: Tobias Heye, Hanns-Christian Breit, David J. Winkel, Tobias K. Block, Daniel T. Boll

Publikováno v: European Radiology. 30:4828-4837

To assess if adding perfusion information from dynamic contrast-enhanced (DCE MRI) acquisition schemes with high spatiotemporal resolution to T2w/DWI sequences as input features for a gradient boosting machine (GBM) machine learning (ML) classifier c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aaa15608b767377c3536cb17ec8b2c89
https://doi.org/10.1007/s00330-020-06849-y

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Gadoxetate Disodium versus Gadoterate Meglumine: Quantitative Respiratory and Hemodynamic Metrics by Using Compressed-Sensing MRI

Autor: Bram Stieltjes, Elmar M. Merkle, Manuela Moor, Tobias K. Block, David J. Winkel, Carl G Glessgen, Tobias Heye, Daniel T. Boll

Publikováno v: Radiology. 293:317-326

Background Gadoxetate disodium has been associated with various respiratory irregularities at arterial imaging MRI. Purpose To measure the relationship between gadolinium-based contrast agent administration and irregularities by comparing gadoxetate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5547d00e8a6902e89ac4b384eaa888c2
https://doi.org/10.1148/radiol.2019190187

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Compressed Sensing Radial Sampling MRI of Prostate Perfusion: Utility for Detection of Prostate Cancer

Autor: Tobias K. Block, Lukas Bubendorf, Tobias Heye, Christian Wetterauer, David J. Winkel, Carl G Glessgen, Matthias R. Benz, Daniel T. Boll

Publikováno v: Radiology. 290:702-708

PURPOSE: To investigate the diagnostic performance of a dual-parameter approach by combining either volumetric interpolated breath-hold examination (VIBE)- or golden-angle radial sparse parallel (GRASP)–derived dynamic contrast agent–enhanced (DC

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ebf079a4e11b8a6aa60e3ba6fe3a79d
https://doi.org/10.1148/radiol.2018180556

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Revisiting DCE-MRI: Classification of Prostate Tissue Using Descriptive Signal Enhancement Features Derived From DCE-MRI Acquisition With High Spatiotemporal Resolution

Autor: Tobias K. Block, Hanns C Breit, Julian E. Gehweiler, David J. Winkel, Christian Wetterauer, Daniel T. Boll, H.H. Seifert, Tobias Heye, Carl G Glessgen

Publikováno v: Invest Radiol

PURPOSE: The aim of this study was to investigate the diagnostic value of descriptive prostate perfusion parameters derived from signal enhancement curves acquired using golden-angle radial sparse parallel dynamic contrast-enhanced (DCE) magnetic res

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88746819a08951bb3da408ad51e0f240
https://pubmed.ncbi.nlm.nih.gov/33660631

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Comparison of conventional DCE-MRI and a novel golden-angle radial multicoil compressed sensing method for the evaluation of breast lesion conspicuity

Autor: Yiming Gao, Sungheon Kim, Linda Moy, Tobias K. Block, Ricardo Otazo, Amy N. Melsaether, James S. Babb, Laura Heacock, Samantha L. Heller

Publikováno v: Journal of Magnetic Resonance Imaging. 45:1746-1752

Purpose To compare a novel multicoil compressed sensing technique with flexible temporal resolution, golden-angle radial sparse parallel (GRASP), to conventional fat-suppressed spoiled three-dimensional (3D) gradient-echo (volumetric interpolated bre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cfc8bd1fb1469ee7b0adfbeb4aad5314
https://doi.org/10.1002/jmri.25530

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Estimating Liver Perfusion From Free–Breathing Continuously Acquired Dynamic Gadolinium-Ethoxybenzyl-Diethylenetriamine Pentaacetic Acid–Enhanced Acquisition With Compressed Sensing Reconstruction

Autor: Artem Mikheev, Hersh Chandarana, Justin M. Ream, Tobias K. Block, Samuel H. Sigal, Henry Rusinek, Ricardo Otazo

Publikováno v: Investigative Radiology. 50:88-94

ObjectiveThe purpose of this study was to estimate perfusion metrics in healthy and cirrhotic liver with pharmacokinetic modeling of high–temporal resolution reconstruction of continuously acquired free-breathing gadolinium-ethoxybenzyl-diethylenet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d3f273f3fe973cf73e107aed507ca17
https://doi.org/10.1097/rli.0000000000000105

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A model-based reconstruction for undersampled radial spin-echo DTI with variational penalties on the diffusion tensor

Autor: José G. Raya, Tobias K. Block, Daniel K. Sodickson, Rafael O. Halloran, Ricardo Otazo, Florian Knoll, Steven H. Baete, Eric E. Sigmund, Roland Bammer

Publikováno v: NMR in Biomedicine. 28:353-366

Radial spin-echo diffusion imaging allows motion-robust imaging of tissues with very low T2 values like articular cartilage with high spatial resolution and signal-to-noise ratio (SNR). However, in vivo measurements are challenging, due to the signif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88d3d0cdaa2b64c2ebf6408b670b376b
https://doi.org/10.1002/nbm.3258

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Validation of Highly-Accelerated Real-Time Cardiac Cine MRI with Radial k-space Sampling and Compressed Sensing in Patients at 1.5T and 3T

Autor: Jeremy D. Collins, Daniel C. Lee, Ganesh Adluru, Daniel Kim, Tobias K. Block, Tamara Isakova, Hassan Haji-Valizadeh, Edward V. R. DiBella, James C. Carr, Amir Ali Rahsepar, Elwin C. Bassett

Purpose To validate an optimal 12-fold accelerated real-time cine MRI pulse sequence with radial k-space sampling and compressed sensing (CS) in patients at 1.5T and 3T. Methods We used two strategies to reduce image artifacts arising from gradient d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fbe0d8eedcb1116637e58f8b8995fdc
https://europepmc.org/articles/PMC5821536/

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