User profiles for F. Machado-Rivas

Fedel Machado-Rivas

Massachusetts General Hospital
Verified email at mgh.harvard.edu
Cited by 272

Normal growth, sexual dimorphism, and lateral asymmetries at fetal brain MRI

F Machado-Rivas, J Gandhi, JJ Choi, C Velasco-Annis… - Radiology, 2022 - pubs.rsna.org
Background Tools in image reconstruction, motion correction, and segmentation have enabled
the accurate volumetric characterization of fetal brain growth at MRI. Purpose To evaluate …

Fetal MRI at 3 T: principles to optimize success

F Machado-Rivas, MC Cortes-Albornoz, O Afacan… - Radiographics, 2023 - pubs.rsna.org
Fetal MRI has emerged as a cornerstone of prenatal imaging, helping to establish the
correct diagnosis in pregnancies affected by congenital anomalies. In the past decade, 3 T …

[HTML][HTML] Deep learning-based parameter estimation in fetal diffusion-weighted MRI

D Karimi, C Jaimes, F Machado-Rivas, L Vasung… - Neuroimage, 2021 - Elsevier
Diffusion-weighted magnetic resonance imaging (DW-MRI) of fetal brain is challenged by
frequent fetal motion and signal to noise ratio that is much lower than non-fetal imaging. As a …

[HTML][HTML] Learning to estimate the fiber orientation distribution function from diffusion-weighted MRI

D Karimi, L Vasung, C Jaimes, F Machado-Rivas… - NeuroImage, 2021 - Elsevier
… For U f we used n f = 362 , leading to a resolution of 7 . 2 ∘ . In some experiments we
increased n f up to 2500, corresponding to a resolution of 2 . 8 ∘ , but did not observe significant …

Success of nonsedated neuroradiologic MRI in children 1–7 years old

…, CD Robson, F Machado-Rivas… - American Journal of …, 2021 - Am Roentgen Ray Soc
Please see the Editorial Comment by Hansel J. Otero discussing this article. BACKGROUND.
MRI use and the need for monitored anesthesia care (MAC) in children have increased. …

In vivo characterization of emerging white matter microstructure in the fetal brain in the third trimester

C Jaimes, F MachadoRivas, O Afacan… - Human Brain …, 2020 - Wiley Online Library
The third trimester of pregnancy is a period of rapid development of fiber bundles in the fetal
white matter. Using a recently developed motion‐tracked slice‐to‐volume registration (MT‐…

Detailed anatomic segmentations of a fetal brain diffusion tensor imaging atlas between 23 and 30 weeks of gestation

C Calixto, F MachadoRivas, D Karimi… - Human Brain …, 2023 - Wiley Online Library
This work presents detailed anatomic labels for a spatiotemporal atlas of fetal brain Diffusion
Tensor Imaging (DTI) between 23 and 30 weeks of post‐conceptional age. Additionally, we …

Image-quality optimization and artifact reduction in fetal magnetic resonance imaging

F Machado-Rivas, C Jaimes, JE Kirsch, MS Gee - Pediatric Radiology, 2020 - Springer
Fetal MRI allows for earlier and better detection of complex congenital anomalies. However,
its diagnostic utility is often limited by technical barriers that introduce artifacts and reduce …

Brain growth in fetuses with congenital diaphragmatic hernia

F MachadoRivas, JJ Choi… - Journal of …, 2023 - Wiley Online Library
Background and Purpose To perform a volumetric evaluation of the brain in fetuses with right
or left congenital diaphragmatic hernia (CDH), and to compare brain growth trajectories to …

Spatiotemporal changes in diffusivity and anisotropy in fetal brain tractography

F MachadoRivas, O Afacan, S Khan… - Human Brain …, 2021 - Wiley Online Library
Population averaged diffusion atlases can be utilized to characterize complex microstructural
changes with less bias than data from individual subjects. In this study, a fetal diffusion …