نتایج جستجو برای: sectional imaging

تعداد نتایج: 646182  

2014
Sivakumar R Sujatha

Optical imaging techniques are treated with utmost importance due to their noninvasive and relatively inexpensive qualities. They have obvious advantages for continuous monitoring of physiological changes over diagnostic modalities like radiography and computed tomography which utilizes ionic radiation. Tomography is mathematical technique to get cross sectional details of an object from multip...

2017
Haijun Li Xiyu Duan Gaoming Li Kenn R. Oldham Thomas D. Wang Huikai Xie

We present an electrostatic microelectromechanical systems (MEMS) resonant scanner with large out-of-plane translational stroke for fast axial-scanning in a multi-photon microscope system for real-time vertical cross-sectional imaging. The scanner has a compact footprint with dimensions of 2.1 mm × 2.1 mm × 0.44 mm, and employs a novel lever-based compliant mechanism to enable large vertical di...

2017
RAMAKRiSHnA nARAyAnAn

Introduction: Accessory Hepatic Lobe (AHL) is an uncommon developmental anomaly usually asymptomatic and reported as an incidental finding on cross-sectional imaging, laparotomy or autopsy. With increasing number of cases undergoing cross-sectional imaging the detection rate of AHL has increased. Aim: The aim of this study was to assess the incidence and describe the imaging features of AHL usi...

Journal: :Current pharmaceutical design 2009
R Smieskova P Fusar-Poli P Allen K Bendfeldt R D Stieglitz J Drewe E W Radue P K McGuire A Riecher-Rössler S J Borgwardt

Despite a large number of neuroimaging studies in schizophrenia reporting subtle brain abnormalities, we do not know to what extent such abnormalities reflect the effects of antipsychotic treatment on brain structure. We therefore systematically reviewed cross-sectional and follow-up structural brain imaging studies of patients with schizophrenia treated with antipsychotics. 30 magnetic resonan...

Introduction: The primary and definitive diagnosis of meningioma is based on histological assessment; however, employing imaging methods, like Magnetic Resonance Imaging (MRI) is very helpful to describe lesion’s characteristics. Accordingly, we decided to study the effect of imaging factors, like MRI data on the volume of hemorrhage (estimated blood loss) during meningioma surgery. Methods: T...

2016
Laís Fajardo Guilherme de Araujo Ramin Thiago José Penachim Daniel Lahan Martins Patrícia Prando Cardia Adilson Prando

In the appropriate clinical setting, certain aspects of extranodal abdominal lymphoma, as revealed by current cross-sectional imaging techniques, should be considered potentially diagnostic and can hasten the diagnosis. In addition, diagnostic imaging in the context of biopsy-proven lymphoma can accurately stage the disease for its appropriate treatment. The purpose of this article was to illus...

Journal: :Optics letters 1997
S A Boppart B E Bouma C Pitris G J Tearney J G Fujimoto M E Brezinski

We discuss the design and implementation of forward-imaging instruments for optical coherence tomography (OCT), which require the delivery, scanning, and collection of single-spatial-mode optical radiation. A hand-held surgical probe for use in open surgery can provide cross-sectional images of subsurface tissue before surgical incisions are made. A rigid laparoscope for minimally invasive surg...

Azadeh Sharifzadeh Yazdi, Mahdi Saeedi-Moghadam, Pooya Iranpour, Rezvan Ravanfar Haghighi,

    Background: Since pulmonary angiography is the only non-invasive method for diagnosing pulmonary embolism, the use of radiation reduction methods without affecting the quality of images seems necessary. One of the simplest reasons for unnecessarily increasing of patient exposure is repetitive imaging due to poor image quality. Therefore, it is necessary to identify and ...

Journal: :Current opinion in rheumatology 2003
G Blumenkrantz S Majumdar

Magnetic resonance imaging of articular cartilage has recently been recognized as a tool for the characterization of cartilage morphology, biochemistry and function. In this paper advancements in cartilage imaging, computation of cartilage volume and thickness, and measurement of relaxation times (T2 and T1Rho) are presented. In addition, the delayed uptake of Gadolinium DTPA as a marker of pro...

Background: Panoramic imaging is one of the most common imaging methods in dentistry. Regarding the side-effects of ionizing radiation, it is necessary to survey different aspects and details of panoramic imaging. In this study, we compared the absorbed x-ray dose around two panoramic x-ray units: PM 2002 CC Proline (Planmeca, Helsinki, Finland) and Cranex Tome (Soredex, Helsinki, Finland).<br ...

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