Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Fetal MRI"”.
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A Pipeline for Zoomed Fetal MRI
Fetal Magnetic Resonance Imaging (MRI) is heavily constrained by unpredictable and substantial fetal motion that causes image artifacts and limits the set of viable diagnostic image contrasts. Fast, single-shot MRI of the fetal brain, such as HASTE, is a commonly applied acquisition method to …
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A Robust and Efficient Framework for Slice-to-Volume Reconstruction: Application to Fetal MRI
… the application of magnetic resonance imaging (MRI) in assessing fetal brain development. We first introduce a slice-to-volume registration transformer that models input slices as a sequence and performs inter-slice motion correction by simultaneously predicting rigid transformations of all …
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Online, low-latency decision making for Fetal Magnetic Resonance Imaging with machine learning
Fetal Magnetic Resonance Imaging (MRI) with T2-weighted Half-Fourier-Acquisition Single-Shot Turbo-Spin-Echo (HASTE) sequence plays an important role in diagnosing brain abnormality. However, the quality of HASTE images routinely suffer from fetal motion which leads to image artifacts, incomplete …
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Motion-robust Machine Learning Methods for Region-of-Interest Tracking and Selective Magnetic Resonance Imaging with External Shim Arrays
Fetal motion during imaging presents a significant challenge, resulting in image artifacts and limiting the diagnostic information that can be obtained. Despite the adoption of fast single-shot MRI techniques, capable of acquiring images in less than a second per slice, fetal motion remains …
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Acquisition and reconstruction techniques for improving rapid magnetic resonance imaging with applications in fetal imaging
Magnetic Resonance Imaging (MRI) serves as a powerful and noninvasive medical imaging modality. It gives clinicians the ability to image a wide variety of physical parameters, control image content, and acquire images at arbitrary spatial orientations and resolutions. Recently, MRI has gained …
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A 64 channel 3T array coil for highly accelerated fetal imaging at 22 weeks of pregnancy
MRI is an attractive tool for fetal imaging due to its unique ability to provide detailed anatomical and physiological data in an inherently safe manner. In practice, the problem of unpredictable and nonrigid fetal motion limits fetal MRI to fast single shot T2 weighted sequences such as HASTE, …
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Combining Computational Techniques with Physics for Applications in Accelerated MRI
Magnetic Resonance Imaging (MRI) non-invasively measures high-resolution images of soft tissue contrast in human anatomy without any ionizing radiation or injection of contrast agent. However, MRI incurs large costs to patients and researchers due to expensive equipment and slow imaging times. …
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Development of a 3D radial MR Imaging sequence to be used for (self) navigation during the scanning of the fetal brain in utero
Imaging the fetal brain in utero is challenging due to the unpredictable motion of the fetus. Although ultra-fast MRI sequences are able to image a 2D slice in under a second, thus limiting the time in which fetal motion can corrupt images, Cartesian sampling makes these sequences sensitive to …
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Isolated, Absent Cavum Septum Pellucidum: A Single Center’S Outcomes and Review of The Literature
… delay (n=5/6). Our study found that fetal MRIs may be more sensitive in diagnosing a prenatally suspected isolated, absent CSP, but are not accurate predictors of who may ultimately receive a SOD diagnosis. In conclusion, an absent CSP is often associated with additional …