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see computer-aided designcomputer-aided design
(CAD) or computer-aided design and drafting
(CADD), form of automation that helps designers prepare drawings, specifications, parts lists, and other design-related elements using special graphics- and calculations-intensive computer programs.
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(computer science)

computer-aided design (CAD)

The analysis and/or design, and/or modeling, and/or simulation, and/or layout of building design with the aid of a computer.



(Computer-Aided Design) Using high-speed desktop computers to design products. Either a mouse or graphics tablet is used for the physical drawing, and a scanner may be attached for additional input. The output of a CAD system is often electronically transmitted to a computer-aided manufacturing (CAM) system or 3D printer, which builds the objects (see CAD/CAM and 3D printing).

Generic or Specialized
CAD software is available for generic design or specialized uses, such as architectural, electrical and mechanical. The software may also be highly specialized for creating products such as printed circuits and integrated circuits.

Solid and Parametric Modeling
More complex forms of CAD are solid modeling and parametric modeling, which allows objects to be created with real-world characteristics. For example, in solid modeling, objects can be sectioned (sliced down the middle) to reveal their internal structure. In parametric modeling, objects have meaningful relationships with each other (a door must be on a wall, not the floor; holes cannot be drilled too close to the edge, etc.). See wireframe modeling, surface modeling, solid modeling, parametric modeling, graphics and CAE.

Two or Three Dimensions
While 2D CAD programs work for some applications, they are essentially the computer counterpart to hand-drawn objects. In contrast, 3D CAD enables objects to be drawn with sides, top and bottom so they can be manipulated as a whole and viewed from any angle.

From Rivets to Trees
Some CAD software suites can take the finished object and render it as a real-world entity. This building was designed in MicroStation Modeler and rendered in MicroStation MasterPiece from Bentley Systems. (Image courtesy of Bentley Systems, Inc. and Cooper Carry.)
References in periodicals archive ?
C-0307 - "Sensitivity of a Computer-Aided Detection System Applied to Full-Field Digital Mammography (FFDM) According to Histopathology and Tumor Size," by P.
The company owns patents fundamental to mammography computer-aided detection in the US, Canada and Japan, with claims allowed in Europe.
Gilbert, from the University of Aberdeen in the UK, and colleagues conducted a randomized controlled trial comparing single reading plus computer-aided detection with double reading.
Henry Mayo Newhall Memorial Hospital will soon acquire a new, computer-aided detection (CAD) system for mammography that provides a computerized second review of mammograms.
The MagView Mammography Information System software implemented on R2's ImageChecker system will offer mammographers best of class tools in both computer-aided detection and mammography reporting software.
is a recognized leader in the development and commercialization of computer-aided detection (CAD), an innovative technology that assists radiologists in the early detection of breast cancer and other cancer-related lesions.
Both the Second Look 200 and the ClickCAD program are designed for lower case-volume mammography clinics, which the company estimates comprise one-half to two-thirds of the potential overall market for computer-aided detection of breast cancer products.
Machines can't replace doctors who read mammograms, but computer-aided detection, or CAD, can guide them, Destounis says.
The researchers of the journal article "Influence of Computer-Aided Detection on Performance of Screening Mammography," published April 5, reviewed the use of computer-aided mammograms and the performance of screening mammography from 1998 through 2002 at 43 facilities in three states.
Last year, the center added a new computer-aided detection (CAD) system for mammography that provides a computerized second review of mammograms.

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