Avascular necrosis (AVN) of the scaphoid in children is very rare and there is currently no consensus when conservative or operative treatment is indicated. A 10-year-old boy, practicing karate, presented with acute pain in his left wrist after falling on the outstretched hand. Imaging showed a scaphoid waist fracture with signs of an ongoing AVN. The diagnosis of AVN was confirmed with signal ...

Parallel magnetic resonance imaging (MRI) is an imaging technique by acquiring a reduced amount of data in Fourier domain with multiple receiver coils. To recover the underlying imaging object, one often needs the explicit knowledge of coil sensitivity maps, or some additional fully acquired data blocks called the auto-calibration signals (ACS). In this paper, we show that by exploiting the bet...

INTRODUCTION The analysis of abdominal and thoracic dynamic contrast-enhanced MRI is often impaired by motion-induced artifacts and misregistration, caused by physiological motion. Breath-holding is too short to cover these long acquisitions and suffers from imperfections. A previously published reconstruction algorithm, GRICS [1], corrects for motion-induced artifacts in a single image reconst...

Compressed Sensing (CS) has been applied in dynamic Magnetic Resonance Imaging (MRI) to accelerate the data acquisition without noticeably degrading the spatial-temporal resolution. A suitable sparsity basis is one of the key components to successful CS applications. Conventionally, a multidimensional dataset in dynamic MRI is treated as a series of two-dimensional matrices, and then various ma...

Dynamic magnetic resonance imaging (MRI) refers to the repeated acquisition of image data to monitor changes in tissue structure over time. In this paper we present a method for the efficient acquisition of dynamic MRI sequences based on two complimentary strategies: an adaptive framework for the estimation of the MRI images themselves and a method to dynamically adapt the MRI system excitation...

We present the adaptation of the anatomy and articulation of a 3D vocal tract model to a new speaker using magnetic resonance imaging (MRI). We combined two MRI corpora of the speaker: A corpus of volumetric images of sustained phonemes and a corpus with midsagittal image sequences of dynamic utterances. The volumetric MRI corpus was used for the adaptation of vocalic and (neutral) consonantal ...