Temporal analysis of articulatory speech errors using direct image analysis of real time magnetic resonance imaging.

2010 ◽  
Vol 128 (4) ◽  
pp. 2289-2289 ◽  
Author(s):  
Michael Proctor ◽  
Adam Lammert ◽  
Louis Goldstein ◽  
Shrikanth Narayanan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Image Analysis ◽  
Magnetic Resonance ◽  
Real Time ◽  
Temporal Analysis ◽  
Direct Image ◽  
Speech Errors ◽  
Resonance Imaging

scholarly journals Characterizing Articulation in Apraxic Speech Using Real-Time Magnetic Resonance Imaging

2017 ◽  
Vol 60 (4) ◽  
pp. 877-891 ◽  
Author(s):  
Christina Hagedorn ◽  
Michael Proctor ◽  
Louis Goldstein ◽  
Stephen M. Wilson ◽  
Bruce Miller ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Analytical Methods ◽  
Vocal Tract ◽  
Speech Errors ◽  
Apraxia Of Speech ◽  
Resonance Imaging ◽  
Monosyllabic Words ◽  
Intrusion Errors

Purpose Real-time magnetic resonance imaging (MRI) and accompanying analytical methods are shown to capture and quantify salient aspects of apraxic speech, substantiating and expanding upon evidence provided by clinical observation and acoustic and kinematic data. Analysis of apraxic speech errors within a dynamic systems framework is provided and the nature of pathomechanisms of apraxic speech discussed. Method One adult male speaker with apraxia of speech was imaged using real-time MRI while producing spontaneous speech, repeated naming tasks, and self-paced repetition of word pairs designed to elicit speech errors. Articulatory data were analyzed, and speech errors were detected using time series reflecting articulatory activity in regions of interest. Results Real-time MRI captured two types of apraxic gestural intrusion errors in a word pair repetition task. Gestural intrusion errors in nonrepetitive speech, multiple silent initiation gestures at the onset of speech, and covert (unphonated) articulation of entire monosyllabic words were also captured. Conclusion Real-time MRI and accompanying analytical methods capture and quantify many features of apraxic speech that have been previously observed using other modalities while offering high spatial resolution. This patient's apraxia of speech affected the ability to select only the appropriate vocal tract gestures for a target utterance, suppressing others, and to coordinate them in time.

Articulatory Synthesis Based on Real-Time Magnetic Resonance Imaging Data

2016 ◽  
Author(s):  
Asterios Toutios ◽  
Tanner Sorensen ◽  
Krishna Somandepalli ◽  
Rachel Alexander ◽  
Shrikanth S. Narayanan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Imaging Data ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Data ◽  
Articulatory Synthesis

Real-time visualization and characterization of liposomal delivery into the monkey brain by magnetic resonance imaging

2005 ◽  
Vol 16 (1-3) ◽  
pp. 20-26 ◽  
Author(s):  
Michal T. Krauze ◽  
Tracy R. Mcknight ◽  
Yoji Yamashita ◽  
John Bringas ◽  
Charles O. Noble ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Resonance Imaging ◽  
Monkey Brain ◽  
Real Time Visualization ◽  
Liposomal Delivery

scholarly journals Dynamic near-real-time magnetic resonance imaging for analyzing the velopharyngeal closure in comparison with videofluoroscopy

2004 ◽  
Vol 20 (5) ◽  
pp. 791-797 ◽  
Author(s):  
Ambros J. Beer ◽  
Paul Hellerhoff ◽  
Angela Zimmermann ◽  
Katalin Mady ◽  
Robert Sader ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Resonance Imaging ◽  
Velopharyngeal Closure

scholarly journals Feasibility and reproducibility of biventricular volumetric assessment of cardiac function during exercise using real-time radialk-tSENSE magnetic resonance imaging

2009 ◽  
Vol 29 (5) ◽  
pp. 1062-1070 ◽  
Author(s):  
Philipp Lurz ◽  
Vivek Muthurangu ◽  
Silvia Schievano ◽  
Johannes Nordmeyer ◽  
Philipp Bonhoeffer ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cardiac Function ◽  
Real Time ◽  
Resonance Imaging ◽  
Volumetric Assessment

Real-time magnetic resonance imaging of laser heat deposition in tissue

1991 ◽  
Vol 21 (1) ◽  
pp. 132-137 ◽  
Author(s):  
Alan R. Bleier ◽  
Ferenc A. Jolesz ◽  
Mark S. Cohen ◽  
Robert M. Weisskoff ◽  
Julianne J. Dalcanton ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Resonance Imaging ◽  
Laser Heat ◽  
Heat Deposition
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