Results 171 to 180 of about 2,207,221 (306)

Analysis of Pulsatile Vessel Expansion in Healthy, COPD‐and PH‐Patients Using Dynamic Vessel Segmentation in Free‐Breathing Lung MRI

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background The pulsatile expansion of pulmonary vessels carries dynamic cardiopulmonary information that may reveal disease earlier than structural changes alone. Purpose To test (i) intra‐ and inter‐scan repeatability of dynamic vessel metrics in healthy subjects, and (ii) whether chronic obstructive pulmonary disease (COPD) and postcapillary
Julian Glandorf   +10 more
wiley   +1 more source

Cramér-Rao Bounds for SNR Estimation of Oversampled Linearly Modulated Signals

open access: yesIEEE Transactions on Signal Processing, 2015
Roberto López-Valcarce   +4 more
semanticscholar   +1 more source

Patient Dose Optimisation of Abdominopelvic Protocols During X‐Ray Imaging

open access: yesJournal of Medical Radiation Sciences, EarlyView.
This study evaluates organ doses in abdominopelvic radiography for both erect and supine positions, addressing dose optimisation concerns in Ghana. Using CalDose X and thermoluminescence dosimeters, organ doses and image quality were analysed, revealing significant dose reductions with optimised exposure parameters (70 kVp, 10 mAs, 110 cm FDD).
Emmanuel Ekem‐Ferguson   +3 more
wiley   +1 more source

Radiation Dose and Risk in the Radiological Investigation of Suspected Non‐Accidental Injury (NAI)

open access: yesJournal of Medical Radiation Sciences, EarlyView.
This study is a retrospective analysis of 362 skeletal surveys performed over a 5‐year period for children under 5 years of age for suspected non‐accidental injury. We present effective dose data and the associated risks of radiation exposure for initial and follow‐up examinations.
Tooba Zaidi, Rikki Nezich
wiley   +1 more source

Your C‐Arm May Be Dose Optimised but Is Your Surgical Procedure? The Evaluation and Dose Optimisation of Positioning Aids Used in Paediatric Image Guided Surgery

open access: yesJournal of Medical Radiation Sciences, EarlyView.
This study objectively evaluated the impact of positioning aids on radiation dose and image quality (IQ) in paediatric image guided surgery (IGS) and the potential for dose optimised imaging via the choice of positioning aid type selected for clinical use.
Dalia Dinham   +4 more
wiley   +1 more source

BCARS Simulated Phantom Dataset for Evaluation of Processing Pipelines

open access: yesJournal of Raman Spectroscopy, EarlyView.
A tissue phantom, containing fingerprint Raman spectra at each pixel, is developed to evaluate Raman signal processing pipelines. The phantom is created from a BCARS image of a murine hepatic tissue. ABSTRACT Broadband coherent anti‐Stokes Raman scattering (BCARS) microscopy is a powerful label‐free biological imaging technique, but the raw signal ...
Jessica Z. Dixon   +5 more
wiley   +1 more source

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