Results 121 to 130 of about 57,287 (257)

Bicomponent Mapping of Cortical Bone Using a New Interleaved UTE Imaging Sequence

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Ultrashort echo time (UTE) MRI enables direct imaging of cortical bone and quantification of its water compartments via bicomponent T2* modeling. However, conventional approaches require multiple separate dual‐echo scans due to limitations in gradient power. This approach is prone to inter‐scan inconsistencies such as motion and signal
Soo Hyun Shin, Jiyo S. Athertya, Arya Suprana, James Lo, Jiaji Wang, Dina Moazamian, Fanny Chapelin, Yajun Ma   +7 more
wiley   +1 more source

Cutting out the middleman: measuring nuclear area in histopathology slides without segmentation

, 2016
The size of nuclei in histological preparations from excised breast tumors is predictive of patient outcome (large nuclei indicate poor outcome). Pathologists take into account nuclear size when performing breast cancer grading.
D Cireşan, DC Cireşan, EC Mommers, HR Roth, M Veta, M Veta, P Kronqvist   +6 more
core   +1 more source

Inter‐Individual Differences in T1, T2, and Proton Density Using Quantitative Synthetic Imaging for 1H‐MRS Quantification

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Metabolite concentrations can be determined from proton magnetic resonance spectroscopy (1H‐MRS) data using water as an internal reference. This calculation requires tissue‐specific water T1 and T2 relaxation constants and proton density (PD).
Samantha A. Leech, Sarah L. Manske, Paul G. Mullins, Tiffany K. Bell, Ashley D. Harris   +4 more
wiley   +1 more source

Cross-cultural adaptation of the Activities of Daily Living Questionnaire-Brazil in Parkinson’s disease

Arquivos de Neuro-Psiquiatria
Background: Culturally adapted measures to assess the performance of activities of daily living (ADL) in individuals with Parkinson’s disease (PD) are limited in Brazil.
Walter Luis Teixeira ALVES, Iza de FARIA-FORTINI, Ana Carolina Daher Ribas GALVÃO, Francisco Eduardo Costa CARDOSO, Paula Luciana SCALZO   +4 more
doaj   +1 more source

Effects and Correction of Patient Bulk Motion in Cranial DENSE MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Applications of DENSE to measure cardiac driven brain tissue pulsations are highly sensitive to bulk patient motion due to the sub‐millimeter displacement encoding required, limiting its accuracy, reproducibility, and use in pediatric and aging populations.
Caroline A. Doctor, Leonardo A. Rivera‐Rivera, Laura B. Eisenmenger, Sterling C. Johnson, Kevin M. Johnson   +4 more
wiley   +1 more source

On‐Scanner Correction of Gradient Nonlinearity Bias for Accurate Assessment of Diffusion Heterogeneity Across Bone Sites in Myelofibrosis Patients

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To improve accuracy of apparent diffusion coefficient (ADC) measurement across different bone‐marrow (BM) sites for myelofibrosis (MF) patients. Methods Vendor‐provided ADC gradient nonlinearity correction (GNC) was implemented for 41 MF study subjects on a 3T clinical scanner.
Dariya Malyarenko, Brian D. Ross, Johannes M. Peeters, Ajit Devaraj, Ramin Jafari, Humera Tariq, Kristen M. Pettit, Moshe Talpaz, Gary D. Luker, Thomas L. Chenevert   +9 more
wiley   +1 more source

Limits of Agreement Based on Transformed Measurements

Stats
Method comparison studies are typically analyzed using limits of agreement (LoAs). The standard Bland–Altman approach estimates LoAs under the assumption that the differences between methods follow a normal distribution.
Erik Thorlund Parner
doaj   +1 more source

Validity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation [PDF]

, 2019
OBJECTIVES: Although more than 1.8 million people survive snakebite envenomation each year, their recovery is understudied. Obtaining long-term follow-up is challenging in both high- and low-resource settings. The Patient-Specific Functional Scale (PSFS)
et al.,, Mullins, Michael E, Theophanous, Rebecca G   +2 more
core   +1 more source

Quantitative Comparison of Multi‐Echo Spin Echo and Multi‐Echo Gradient Echo Myelin Water Imaging in a Panel of Mbp Enhancer‐Edited Mouse Lines

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the correspondence between myelin water fraction (MWF) estimates derived from multi‐echo spin echo (MESE) and multi‐echo gradient echo (MGRE) imaging in fixed mouse brain tissue, using a panel of myelin basic protein (Mbp) enhancer‐edited mouse lines exhibiting graded hypomyelination.
Vladimir Grouza, Yawen Shi, Sean Goldfarb, Klaudia M. Bednarz, Isabella Gomez, Marius Tuznik, Zhe Wu, Hooman Bagheri, Katherine A. Siminovitch, Alan C. Peterson, Thomas Stroh, David A. Rudko   +11 more
wiley   +1 more source

Comparison of self-reported measure of sitting time (IPAQ) with objective measurement (activPAL) [PDF]

, 2014
Chastin, Sebastien, Culhane, Brendan, Dall, Philippa   +2 more
core   +2 more sources