نتایج جستجو برای: field scanner

تعداد نتایج: 803839  

Journal: :Physics in medicine and biology 2013
S Surti M E Werner J S Karp

The aim of this study is to understand the trade-off between crystal thickness and scanner axial field-of-view FOV (AFOV) for clinical PET imaging. Clinical scanner design has evolved towards 20-25 mm thick crystals and 16-22 cm long scanner AFOV, as well as time-of-flight (TOF) imaging. While Monte Carlo studies demonstrate that longer AFOV and thicker crystals will lead to higher scanner sens...

2004
Osamu Yamada Yutaka Takase

A scanning device generally referred to as a "laser scanner", used to obtain 3D data of objects by irradiating laser beams, is used in the field of cultural properties, and is starting to achieve significant results. The technique to record complex 3D data with high accuracy and speed, without touching or destructing an object, makes it an essential tool in the field of cultural properties, as ...

Journal: :Journal of the Japan Society for Precision Engineering 1990

Journal: :BMC Bioinformatics 2016

2014
Clarissa Zimmerman Cooley

Purpose: As the premiere modality for brain imaging, MRI could find wider applicability if lightweight, portable systems were available for siting in unconventional locations such as intensive care units (ICUs), physician offices, surgical suites, ambulances, emergency rooms, sports facilities, or rural healthcare sites. Methods: A truly portable (<100kg) proof-of-concept MRI scanner has been c...

2018
Yoann Dessery Jari Pallari

Use of additive manufacturing is growing rapidly in the orthotics field. This technology allows orthotics to be designed directly on digital scans of limbs. However, little information is available about scanners and 3D scans. The aim of this study is to look at the agreement between manual measurements, high-level and low-cost handheld 3D scanners. We took two manual measurements and three 3D ...

Journal: :Photonics 2021

Photoacoustic imaging (PAI) is a hybrid non-invasive technique used to merge high optical contrast and acoustic resolution in deep tissue. PAI has been extensively developed by utilizing its advantages that include depth, resolution, label-free imaging. As representative implementation of PAI, photoacoustic microscopy (PAM) preclinical clinical studies for micron-scale spatial capability with a...

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