Imaging technology

About: Imaging technology is a research topic. Over the lifetime, 1450 publications have been published within this topic receiving 26186 citations.

Integrated x-ray and echocardiography imaging for structural heart interventions.

Abstract: Treatment of structural heart disease (SHD) represents a growing need and, with increasing device availability, an increasing number of SHD can be and will be treated percutaneously. However, interventional treatment of SHD is challenging. Long procedure times and steep learning curves are recognised obstacles. The main difficulties arise, however, from the inability to visualise simultaneously the anatomy and the devices using a single imaging technology. In fact, the majority of percutaneous interventions in SHD are guided by fluoroscopy. On the other hand, a multitude of imaging technologies are presently available to guide the interventionalist. Of these technologies, transoesophageal echocardiography (TEE), and particularly 3-D TEE, is rapidly becoming the imaging modality of choice for many of these procedures because it provides critical insights into soft tissue anatomy. However, adequate visualisation and appreciation of the relationships between the cardiac structures and the devices using various imaging modalities remain a challenge. Hence, the interaction between the operator and imager is a crucial factor in attaining procedural success. Innovative technology that fuses live 3-D TEE with live x-ray in an intuitive way could have an important added value. This new imaging technology seeks to improve the communication between the echocardiographer and the interventionalist, to increase the confidence and anatomical awareness, to assist in guidance, and to increase procedural efficiency.

MR Cholangiopancreatography at 3.0 T

Abstract: The rapid evolution of magnetic resonance (MR) imaging technology has produced much-needed improvements in temporal and spatial resolution that have led to greater recognition of diseases of the hepatobiliary and pancreatic ducts at MR cholangiopancreatography. This modality often substitutes for diagnostic evaluations with endoscopic retrograde cholangiopancreatography and percutaneous transhepatic cholangiography. Recent innovations in whole-body MR imaging, including fast imaging sequences, phased-array coils, parallel imaging techniques, and 3.0-T magnets, allow the acquisition of higher-quality diagnostic images in less time. An understanding of these technical advances and their potential clinical applications, limitations, and pitfalls for cholangiopancreatographic evaluation is as essential as a familiarity with the spectrum of possible findings; both are needed to accurately identify and characterize the disease process and to provide effective guidance for treatment.

Three-Dimensional Imaging in Orthodontics.

Abstract: Orthodontic records are one of the main milestones in orthodontic therapy Records are essential not only for diagnosis and treatment planning but also for follow-up of the case, communicating with colleagues, and evaluating the treatment outcomes Recently, two-dimensional (2D) imaging technology, such as cephalometric and panoramic radiographs and photographs, and plaster models were routinely used However, after the introduction of three-dimensional (3D) technologies (laser scanner, stereophotogrammetry, and computed tomography) into dentistry, 3D imaging systems are more and more commonly preferred than 2D, especially in cases with craniofacial deformities In fact, 3D imaging provided more detailed and realistic diagnostic information about the craniofacial hard as well as soft tissue and allowed to perform easier, faster, and more reliable 3D analyses The purpose of this review is to provide an overview of the 3D imaging techniques, including their advantages and disadvantages, and to outline the indications for 3D imaging

Photoacoustic elastography imaging: a review.

Abstract: Elastography imaging is a promising tool-in both research and clinical settings-for diagnosis, staging, and therapeutic treatments of various life-threatening diseases (including brain tumors, breast cancers, prostate cancers, and Alzheimer's disease). Large variation in the physical (elastic) properties of tissue, from normal to diseased stages, enables highly sensitive characterization of pathophysiological states of the diseases. On the other hand, over the last decade or so, photoacoustic (PA) imaging-an imaging modality that combines the advantageous features of two separate imaging modalities, i.e., high spatial resolution and high contrast obtainable, respectively, from ultrasound- and optical-based modalities-has been emerging and widely studied. Recently, recovery of elastic properties of soft biological tissues-in addition to prior reported recovery of vital tissue physiological information (Hb, HbO2, SO, and total Hb), noninvasively and nondestructively, with unprecedented spatial resolution (μm) at penetration depth (cm)-has been reported. Studies demonstrating that combined recovery of mechanical tissue properties and physiological information-by a single (PA) imaging unit-pave a promising platform in clinical diagnosis and therapeutic treatments. We offer a comprehensive review of PA imaging technology, focusing on recent advances in relation to elastography. Our review draws out technological challenges pertaining to PA elastography (PAE) imaging, and viable approaches. Currently, PAE imaging is in the nurture stage of its development, where the technology is limited to qualitative study. The prevailing challenges (specifically, quantitative measurements) may be addressed in a similar way by which ultrasound elastography and optical coherence elastography were accredited for quantitative measurements.

Recent Progress of Near-Infrared (NIR) Imaging —Development of Novel Instruments and Their Applicability for Practical Situations—

Abstract: The purpose of this review article is to outline the recent progress in near-infrared (NIR) imaging technology with particular emphasis on new instrumentation. Superior features of NIR imaging such as suitability for nondestructive and in-situ analysis, transmission ability, availability of optical fibers, high-speed monitoring and stability are very attractive not only for laboratory-based studies but also for diverse practical applications. In this review, introduction to chemical imaging is described, and then, a comparison among NIR, infrared (IR) and Raman imaging are made. Furthermore, the features of new NIR imaging instruments developed by our research group in collaboration with Yokogawa Electric Corporation and Sumitomo Electric Industries, Ltd. are discussed. Finally, some examples of applications of NIR imaging are introduced. Particularly, the performance and usefulness of the newly-developed imaging devices are demonstrated through their applications to pharmaceutical tablets and polymers.