Results 161 to 170 of about 87,413 (321)

Simultaneous Volumetric T1 and T2 Mapping With Blood‐ and Fat‐Suppression in Abdominal Aortic Aneurysms

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop and validate a protocol for simultaneous volumetric T1 and T2 mapping with blood‐ and fat‐suppression, and apply it to patients with abdominal aortic aneurysms (AAA) to assess tissue characteristics. Methods A spoiled gradient echo (SPGR) variable flip angle (VFA) acquisition was modified with preparation modules to suppress
Wilhelm Stehling, Myrte Wennen, Eva Aalbregt, Eric Schrauben, Pim van Ooij, Kak Khee Yeung, Aart J. Nederveen, Oliver J. Gurney‐Champion   +7 more
wiley   +1 more source

Interpreting method comparison studies by use of the bland-altman plot: reflecting the importance of sample size by incorporating confidence limits and predefined error limits in the graphic.

Clinical Chemistry, 2004
D. Stöckl, Diego Rodríguez Cabaleiro, K. Van Uytfanghe, L. Thienpont   +3 more
semanticscholar   +1 more source

Rapid Tissue‐CSF Water Exchange in the Human Brain Revealed by Magnetization Transfer Indirect Spin Labeling

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To apply the Magnetization Transfer Indirect Spin Labeling (MISL) MRI technique for quantifying tissue‐CSF water exchange in the human brain, and to investigate its utility in (1) evaluating tissue‐CSF water exchange within perivascular spaces (PVS), and (2) characterizing altered water exchange dynamics in pathologic conditions ...
Yihan Wu, Kexin Wang, Licheng Ju, Anna Li, Qin Qin, Feng Xu, Doris D. M. Lin, Lawrence Kleinberg, Jiadi Xu   +8 more
wiley   +1 more source

Verity plots: A novel method of visualizing reliability assessments of artificial intelligence methods in quantitative cardiovascular magnetic resonance.

PLoS ONE
BackgroundArtificial intelligence (AI) methods have established themselves in cardiovascular magnetic resonance (CMR) as automated quantification tools for ventricular volumes, function, and myocardial tissue characterization.
Thomas Hadler, Clemens Ammann, Hadil Saad, Leonhard Grassow, Philine Reisdorf, Steffen Lange, Sascha Däuber, Jeanette Schulz-Menger   +7 more
doaj   +1 more source

Rosette Cardiac MR Fingerprinting for Simultaneous T1, T2, T2*$$ {\mathrm{T}}_2^{\ast } $$, and Fat Fraction Mapping Using a Multi‐Echo Deep Image Prior Reconstruction

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Quantitative mapping of cardiac tissue properties is used clinically in diagnosis and monitoring of a wide variety of cardiac pathologies. Cardiac Magnetic Resonance Fingerprinting (cMRF) enables rapid and simultaneous quantification of multiple parameters in the myocardium from a single scan.
Evan Cummings, Gastao Cruz, Jacob Richardson, Sydney Kaplan, Jesse Hamilton, Nicole Seiberlich   +5 more
wiley   +1 more source

Feasibility of an artificial intelligence system for tumor response evaluation

BMC Medical Imaging
Purpose The objective of this study was to evaluate the feasibility of using Artificial Intelligence (AI) to measure the long-diameter of tumors for evaluating treatment response.
Nie Xiuli, Chen Hua, Gao Peng, Yu Hairong, Sun Meili, Yan Peng   +5 more
doaj   +1 more source

A Novel Method for Generating a Fused Ventilation–Perfusion Map Using CT‐Derived Ventilation and FDG‐PET for Lung Functional Avoidance in Radiotherapy: A Feasibility Study

Precision Radiation Oncology, EarlyView.
This study retrospectively analyzed two types of respiratory phase CT and PET/CT images of 20 lung cancer patients. After DIR and functional grading, three lung function images were developed, and their correlations and differences were evaluated. Abstract Background Pulmonary ventilation–perfusion function plays a crucial role in both radiotherapy ...
Suyan Bi, Zhitao Dai, Xingru Sun, Wan Fatihah Binti Wan Sohaimi, Ahmad Lutfi Bin Yusoff   +4 more
wiley   +1 more source

Engineering Dosimetric Excellence In Total Body Irradiation: Tomotherapy‐Driven Protocols for Precision and Reproducibility

Precision Radiation Oncology, EarlyView.
• Objective: Assess helical Tomotherapy‐based TBI for clinical feasibility, dosimetric reproducibility, and in‐vivo accuracy using dual‐orientation simulation and patient‐specific QA. • Methodology: Implementation of ArcCHECK 3D diode array, ionization chamber verification, and in‐vivo dosimetry with OSLDs at 16 anatomical sites to ensure precise dose ...
Sandeep Singh, Dipesh, Supratik Sen, Abhay Kumar Singh, Mahipal, Manindra Bhushan, Jaskaran Singh Sethi, David K. Simson, Munish Gairola   +8 more
wiley   +1 more source

Sleep assessment using accelerometry: Not all algorithms are equal

Sleep Research, EarlyView.
Abstract Study objectives Accelerometry devices are increasingly used to assess sleep. However, whether different algorithms provide consistent estimates remains uncertain. This study compared sleep parameters derived from two accelerometry‐based algorithms and a self‐reported sleep journal.
Ruyan Zhou, Pedro Marques‐Vidal
wiley   +1 more source

Pediatric Versus Adult Shear‐Induced Hemolysis—Are Age‐Related Blood Properties the Main Cause for Differences?

Artificial Organs, EarlyView.
Graphical summary of the experimental comparison of shear‐induced hemolysis in pediatric and adult blood using a Couette shearing device. Pediatric blood shows a trend toward lower increase in hemolysis at higher shear stress amplitudes, while no relevant differences are observed at low and intermediate stresses.
Vera Froese, Meike Fahrenholz, Ulrich Kertzscher, Michael Lommel, Maren Kleine‐Brueggeney   +4 more
wiley   +1 more source