نتایج جستجو برای: micro ct

تعداد نتایج: 246131  

2017
Cristian T. Badea

X-ray computed tomography (CT) systems with high resolution (also known as micro-CT systems) have been developed over the last two decades and have been used with great success in small animal studies. A micro-CT scanner is based on the same underlying physical principle as a clinical CT scanner, but it is designed for higher-resolution imaging. It produces three-dimensional (3D) tomographic da...

Journal: :Molecular imaging 2012
Vincent Keereman Yves Fierens Christian Vanhove Tony Lahoutte Stefaan Vandenberghe

Attenuation correction is necessary for quantification in micro-single-photon emission computed tomography (micro-SPECT). In general, this is done based on micro-computed tomographic (micro-CT) images. Derivation of the attenuation map from magnetic resonance (MR) images is difficult because bone and lung are invisible in conventional MR images and hence indistinguishable from air. An ultrashor...

Journal: :Circulation. Cardiovascular imaging 2013
Andrew J Kim Richard Francis Xiaoqin Liu William A Devine Ricardo Ramirez Shane J Anderton Li Yin Wong Fahim Faruque George C Gabriel Wendy Chung Linda Leatherbury Kimimasa Tobita Cecilia W Lo

BACKGROUND Mice are well suited for modeling human congenital heart disease (CHD), given their 4-chamber cardiac anatomy. However, mice with CHD invariably die prenatally/neonatally, causing CHD phenotypes to be missed. Therefore, we investigated the efficacy of noninvasive microcomputed tomography (micro-CT) to screen for CHD in stillborn/fetal mice. These studies were performed using chemical...

2015
Jeffrey R. Ashton Jennifer L. West Cristian T. Badea

Computed tomography (CT) is one of the most valuable modalities for in vivo imaging because it is fast, high-resolution, cost-effective, and non-invasive. Moreover, CT is heavily used not only in the clinic (for both diagnostics and treatment planning) but also in preclinical research as micro-CT. Although CT is inherently effective for lung and bone imaging, soft tissue imaging requires the us...

2017
Francesca Ruscitti Francesca Ravanetti Jeroen Essers Yanto Ridwan Sasha Belenkov Wim Vos Francisca Ferreira Alex KleinJan Paula van Heijningen Cedric Van Holsbeke Antonio Cacchioli Gino Villetti Franco Fabio Stellari

BACKGROUND The intratracheal instillation of bleomycin in mice induces early damage to alveolar epithelial cells and development of inflammation followed by fibrotic tissue changes and represents the most widely used model of pulmonary fibrosis to investigate human IPF. Histopathology is the gold standard for assessing lung fibrosis in rodents, however it precludes repeated and longitudinal mea...

Journal: :Molecular imaging 2004
Dawn Cavanaugh Evan Johnson Roger E Price Jonathan Kurie Elizabeth L Travis Dianna D Cody

Micro-computed tomography(micro-CT) is becoming an accepted research tool for the noninvasive examination of laboratory animals such as mice and rats, but to date, in vivo scanning has largely been limited to the evaluation of skeletal tissues. We use a commercially available micro-CT device to perform respiratory gated in vivo acquisitions suitable for thoracic imaging. The instrument is descr...

Journal: :Rheumatology 2015
Arianna B Lovati Alessandro Pozzi Matilde Bongio Camilla Recordati Gianfranco Berzero Matteo Moretti

OBJECTIVES The aims of this study were to determine whether micro-CT is a reliable investigation method to evaluate the severity of OA in the trapezium and to develop a novel micro-CT scoring system based on a quantitative assessment of the subchondral bone thickness in order to better assess OA through an objective parameter. METHODS We compared different diagnostic and imaging techniques pe...

2012
Greet Kerckhofs Grzegorz Pyka Maarten Moesen Jan Schrooten Martine Wevers

Since commercially available profiling systems fail when determining the surface roughness of 3D additive manufactured porous structures, a novel protocol for surface roughness quantification of these porous structures has been developed based on high-resolution micro-CT images. The influence of the noise in the images and the spatial image resolution on the accuracy of the micro-CT-based rough...

2016
Sachiko Hayashi-Sakai Takafumi Hayashi Makoto Sakamoto Jun Sakai Junko Shimomura-Kuroki Hideyoshi Nishiyama Kouji Katsura Makiko Ike Yutaka Nikkuni Miwa Nakayama Marie Soga Taichi Kobayashi

Most cases of hypophosphatasia (HPP) exhibit early loss of primary teeth. Results of microcomputed tomography (micro-CT) analysis of teeth with HPP have rarely been reported. The purpose of the present study was to describe the mineral density distribution and mapping of exfoliated teeth from an HPP patient using micro-CT. Four exfoliated teeth were obtained from a patient with HPP. Enamel and ...

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