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Computed tomography (CT)
Computed tomography (CT), was known as "EMI scan" as it was developed as an limited research branch of EMI, a company most excellent known at present for its music and recording industry. It is a medical imaging method utilizing tomography where digital geometry processing is employed to create a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The word "tomography" is derived from the Greek tomos (slice) and graphein (to write). CT gives a volume of data which can be manipulated, through a step known as windowing, in order to demonstrate different structures based on their inherent property to block the X-ray beam. Although historically the images created were in the axial or transverse plane, modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures. Now CT scan become most common in healthcare, and is also used in other fields, for example nondestructive materials testing. Another example is the DigiMorph project at the University of Texas at Austin which uses a CT scanner to study biological and paleontological specimens.Since its introduction in the 1970s; CT has become an exclusive tool in medical imaging to support X-rays and medical ultrasonography. But it is somewhat expensive. Nowadays it is the gold standard in the diagnosis of different diseases. Recently CT scans also using for preventive medicine or screening for disease, for example CT colonography for patients with a high risk of colon cancer. Even if a number of institutions now offer full-body scans for the general population, this practice remains controversial due to its lack of proven benefit, cost, radiation exposure, and the risk of finding 'incidental' abnormalities that may trigger additional investigations.
New Computer Interfaces
Keyboards are a essential part of today’s computers. But may be not for much longer. A group of European scientists have used acoustic sensors to turn wooden tabletops and even three-dimensional objects into a new type of computer interface.Sound vibrating a windowpane or through a tabletop is something most people practice daily. Sound waves pass through well through most solid materials. Now, European researchers have demoralized the excellent propagation of sound waves through solids to turn everyday objects – including 3D objects – into a new kind of computer interface.By fixing sensors to solid materials, were able to locate exactly and track acoustic vibrations. Tapping on discrete areas of a whiteboard could generate musical notes on a computer. Tracking the sound of a finger scrawling words on a sheet of hardboard could translate, in real time, into handwriting on a computer screen. There is no need for overlays or intrusive devices.Sensing vibrations in a solid and changing them to electrical pulses is the easy bit. Exactly locating the source of that vibration in a solid material is where it gets complicated. The problem is that the complex structures of solids make wave propagation difficult to model. Wood knots in a desktop, for example, will alter how acoustic vibrations scatter.
Office Professional 2003
Microsoft Office Professional Edition 2003 can help you and your organization communicate information with immediacy and impact. New and familiar programs along with improved functionality help you build powerful connections between people, information, and business processes. In addition to core Office 2003 programs - Word 2003, Excel 2003, and PowerPoint 2003 - the Professional Edition includes Access 2003, Publisher 2003, and Outlook 2003 with Business Contact Manager. Office 2003 now fully supports XML in Word, Excel, and Access. New for 2003 is an e-mail Wizard that lets you create a variety of e-mail publication types -including newsletter, letter, and event announcement - for all 45 Master Design Sets. Plus, you can now create and manage accounts, business contacts and sales opportunities in Microsoft Office Outlook 2003 with Business Contact Manager. Improved features include additional customizable preformatted business reports, more powerful spam filtering in Outlook, free access to the Microsoft Office Online Template Gallery and Design Gallery and the Microsoft Office Marketplace, and tools to build a variety of publication types such as catalogs by merging photos and text from data sources (such as Excel, Access or Outlook). Information Rights Management (IRM) functionality helps protect sensitive files and e-mail messages from unauthorized access and use.