Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Samantha J. Ma"'
Autor:
Mona Sharifi Sarabi, Samantha J. Ma, Kay Jann, John M. Ringman, Danny J.J. Wang, Yonggang Shi
Publikováno v:
NeuroImage, Vol 286, Iss , Pp 120504- (2024)
Small cerebral blood vessels are largely inaccessible to existing clinical in vivo imaging technologies. This study aims to present a novel analysis pipeline for vessel density mapping of small cerebral blood vessels from high-resolution 3D black-blo
Externí odkaz:
https://doaj.org/article/aa2a31387e824141a9a55efb9815cc2e
Autor:
Chenyang Zhao, Xingfeng Shao, Qinyang Shou, Samantha J. Ma, Sayim Gokyar, Christina Graf, Rudolf Stollberger, Danny JJ Wang
Publikováno v:
NeuroImage, Vol 277, Iss , Pp 120251- (2023)
Fulfilling potentials of ultrahigh field for pseudo-Continuous Arterial Spin Labeling (pCASL) has been hampered by B1/B0 inhomogeneities that affect pCASL labeling, background suppression (BS), and the readout sequence. This study aimed to present a
Externí odkaz:
https://doaj.org/article/c204dc9572d64c528057b8ae6ede2cf6
Autor:
Kay Jann, Xingfeng Shao, Samantha J. Ma, Steven Y. Cen, Lina D’Orazio, Giuseppe Barisano, Lirong Yan, Marlena Casey, Jesse Lamas, Adam M. Staffaroni, Joel H. Kramer, John M. Ringman, Danny J. J. Wang
Publikováno v:
Frontiers in Neuroscience, Vol 15 (2021)
Cerebral small vessel disease (cSVD) affects arterioles, capillaries, and venules and can lead to cognitive impairments and clinical symptomatology of vascular cognitive impairment and dementia (VCID). VCID symptoms are similar to Alzheimer’s disea
Externí odkaz:
https://doaj.org/article/9c1408d77b3f49e98d6ad465983b73b2
Autor:
Xingfeng Shao, Kay Jann, Samantha J. Ma, Lirong Yan, Axel Montagne, John M. Ringman, Berislav V. Zlokovic, Danny J. J. Wang
Publikováno v:
Frontiers in Neuroscience, Vol 14 (2020)
Background: Dynamic contrast-enhanced (DCE) MRI using intravenous injection of gadolinium-based contrast agents (GBCAs) is commonly used for imaging blood-brain barrier (BBB) permeability. Water is an alternative endogenous tracer with limited exchan
Externí odkaz:
https://doaj.org/article/358caaa177794444b001fcbd315fa41b
Autor:
Songlin Yu, Samantha J. Ma, David S. Liebeskind, Xin J. Qiao, Lirong Yan, Jeffrey L. Saver, Noriko Salamon, Danny J. J. Wang
Publikováno v:
Frontiers in Neurology, Vol 11 (2020)
Background and Purpose: This study aims to quantify the reperfusion status within severely damaged brain tissue and to evaluate its relationship with high grade of hemorrhagic transformation (HT).Methods: Pseudo-continuous ASL was performed along wit
Externí odkaz:
https://doaj.org/article/72796e456220416ab9e89ca0f0edfd83
Autor:
Bright S. Ashimatey, Lina M. D'Orazio, Samantha J. Ma, Kay Jann, Xuejuan Jiang, Hanzhang Lu, Danny J.J. Wang, John M. Ringman, Amir H. Kashani
Publikováno v:
Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring, Vol 12, Iss 1, Pp n/a-n/a (2020)
Abstract Introduction We investigated the hypothesis that retinal capillary perfusion is a biomarker of early cognitive decline and cerebrovascular perfusion associated with small vessel disease in a pilot data set of Latinx adults at high risk for v
Externí odkaz:
https://doaj.org/article/b629849e198e498c9dc1a72d65824e19
Publikováno v:
Current Oncology, Vol 31, Iss 9, Pp 5484-5497 (2024)
Complex malignant hematology (CMH) shared-care programs have been established to support patients with access to care closer to home. This integrative review examined what is known about CMH shared-care using the RE-AIM evaluation framework. We searc
Externí odkaz:
https://doaj.org/article/db65aec99b864432ad92b9e2915ac62e
Publikováno v:
Magnetic Resonance Imaging Clinics of North America. 29:53-65
Ultrahigh field offers increased resolution and contrast for neurovascular imaging. Arterial spin labeling methods benefit from an increased intrinsic signal-to-noise ratio of MR imaging signal and a prolonged tracer half-life at ultrahigh field, all
Autor:
Dafna Ben Bashat, Jonathan J. Russin, Oren Geri, Arun P. Amar, Danny J.J. Wang, Lirong Yan, Soroush Heidari Pahlavian, Samantha J. Ma
Publikováno v:
Magnetic Resonance in Medicine. 85:2735-2746
Purpose Characterizing vessel territories can provide crucial information for evaluation of cerebrovascular disorders. In this study, we present a novel postprocessing pipeline for vascular territorial imaging of cerebral arteries based on a noncontr
Autor:
Lirong Yan, Xingfeng Shao, Kai Wang, Samantha J. Ma, Chenyang Zhao, Danny J.J. Wang, Qinyang Shou
Publikováno v:
Magnetic resonance in medicine. 87(1)
PURPOSE To optimize pseudo-continuous arterial spin labeling (pCASL) for 7 T, and to further improve the labeling efficiency with parallel RF transmission transmit B1 ( B1+ ) shimming. METHODS pCASL parameters were optimized based on B1+/B0 field dis