## Glossary

#### annotations

Text, drawings, and drawing with measurements that are added to images. Annotations can be either hidden or displayed.

#### ASCII

Acronym for the American Standard Code for Information Interchange. ASCII is a code for representing English characters as numbers. Most computers use ASCII codes to represent text, making it possible to transfer data from one computer to another. Text files stored in ASCII format are sometimes called ASCII files.

#### AVI

Acronym for Audio Video Interleave. AVI is a video format used in exporting cine clips to removable media. The exported AVI video clip can only end up in one of the two supported formats, baseline MJPEG or Windows® Video 1. If you choose the Video 1 AVI format the clip can be viewed in Windows Media® Player. The MJPEG AVI format and the exported video clip can be viewed in Windows Media® Player if the Pegasus MJPEG codec is installed.

#### CD-R

Stands for CD-Recordable. A type of write-once-read-many (WORM) optical disks to which images can be exported from a study. Users can only record information onto a CD-R once.

#### CD-RW

Stands for CD-ReWriteable. A type of rewriteable optical disks to which images can be exported from a study. Users can erase previously recorded information and record new information onto a CD-RW.

#### cine clip

A type of image that contains a sequence of frames. Cine clips are stored AVI or MOV files. You can access cine clips using the McKesson Radiology™ Disc Quick Viewer.

#### Computed Radiography (CR)

A radiological imaging modality similar to Digital Radiography (DR) and Digital X-Ray (DX).

#### Computed Tomography (CT)

This imaging modality was developed in the early 1970s. CT is a transverse imaging system that provides cross-sectional views of the body. CT imaging variables include scan time, collimation, slice spacing, algorithm, matrix size, and the use of contrast medium.

#### DICOM

DICOM stands for Digital Imaging and Communications in Medicine Standard. This standard protocol is intended for communicating medical digital images among printers, workstations, acquisition modules and file servers. It was developed by the American College of Radiology (ACR) and National Electrical Manufacturers Association (NEMA). DICOM is also a part of the developing European standard by CEN, and Japanese standard by JIRA.

#### DICOM file

Each image is based on its DICOM file. DICOM files are generated by the imaging device and interpreted by McKesson Radiology™, before an image is displayed on the monitor. Each DICOM file is divided into two parts: DICOM header, which contains all the patient and study data associated with the image, and Other Image Data, which conveys the pixel information.

#### DICOM header

Part of a DICOM file that contains all the patient and study data associated with the image.

#### Digital Radiography (DR)

A radiological imaging modality that is similar to Computed Radiography and Digital X-Ray (DX).

#### Digital X-Ray (DX)

A radiological imaging modality that creates digital images directly from projection x-rays. The digital images are produced through a plate sensor placed on the other side of the patient from the X-Ray source. When the imaging plate is scanned with the laser beam in the digitizer, the latent image information is released as visible.

#### HTM

The extension used for ASCII or RTF report files that are saved in HTML format.

#### HTML

Acronym for hypertext markup language. It refers to a markup language that is used to create hypertext and hypermedia documents that are viewed in the Web browser. Documents stored in HTML format display the HTM extension.

#### image

A single scan in a study. Each scan produces an image on the monitor display which are saved to the PACS.

#### image device

An image capturing device.

#### JPEG

Acronym for Joint Photographic Experts Group. JPEG usually refers to a file format for the compression of images. JPEG files are lossy compressed, that is to say the exact colors cannot be fully reproduced. This loss of precision is usually invisible to the human eye. The JPEG format is used widely on the Internet.

#### Magneto-Optical (MO)

A type of optical technology that uses a laser beam to read from and write to a magnetic layer on a disk. This technology uses Magneto-Optical (MO) optical disks. MO disks can be write-once-read-many (WORM) or rewriteable.

#### Magneto-Optical (MO) disk

A type of disk that uses the Magneto-Optical technology. MO disks can be write-once-read-many (WORM) or rewriteable.

#### McKesson Radiology™

A DICOM compliant software program used to capture, store, transfer, retrieve, and review digital images. McKesson Radiology™ consists of the following applications and modules: McKesson Radiology PACS Admin™, McKesson Radiology Study Scheduler™, McKesson Enterprise Image Repository Route Manager™, McKesson Radiology QA Manager™, and McKesson Enterprise Image Repository™ Media Manager.

#### McKesson Radiology™ Disc Advanced Viewer

A portable viewer that allows you to view, modify and manipulate study images, and view study information on a computer that does not have access to McKesson Radiology Station™. This enables you to share studies with other medical staff or to view studies at a different location, such as your home office.
It extends the basic functionality of the McKesson Radiology™ Disc Quick Viewer by supporting DICOM images. Both viewers are provided by the McKesson Radiology™ Disc application.

#### McKesson Radiology™ Disc media

When you export study images using the McKesson Radiology Station™ Disc Export Tool, you specify the location the study images are copied to. The location specified is the McKesson Radiology™ Disc media. Typically it is a removable media, such as a CD, but it may also be a folder accessible from the workstation that the study images are exported from.

#### McKesson Radiology PACS Admin™

A system and site management application for maintaining information in the McKesson Radiology™ database.

#### McKesson Radiology Station™

A DICOM compliant software program used to view multi-modality, grayscale, cross-sectional images.

#### McKesson Radiology Station™ Disc Export Tool

The goal of the McKesson Radiology™ Disc application is to enable you to share studies and view study images at locations, such as your home, where the McKesson Radiology Station™ application cannot be accessed. To achieve this goal, McKesson Radiology™ Disc provides the McKesson Radiology Station™ Disc Export Tool, integrated with McKesson Radiology Station™. It allows you to copy studies in McKesson Radiology Station™ to removable media or a folder.

#### McKesson Radiology™ Voice Clips

An application used to add audio messages to a study. Voice clips can be accessed by other users.

#### modality

An attribute of the equipment used to capture images. For example, all images captured with an ultrasound system are of the Ultrasound Imaging (US) modality.

#### optical disk

A disk that is written and read by laser. There are three types of optical disks: read-only, write-once-read-many (WORM), and rewriteable.

#### panning

Moving through an enlarged (zoomed) area.

#### patient class

Category to which the patient belongs. It is specified in the patient records and study information. The default patient classes in McKesson Radiology™ are: Discharged, Inpatient, Outpatient, Unknown.

#### patient documentation

Documents that are related to the study and/or the associated patient. For example, text or audio reports and voice clips.

#### Patient ID

Identification number assigned to the patient. The Patient ID is entered directly in McKesson Radiology™, or received from a HIS/RIS.

#### PDF

Acronym for Portable Document Format, a file format developed by Adobe® Systems. The PDF fully captures the formatting information of the document to which it is applied, regardless of the application in which the document was produced. The PDF makes it possible to send formatted documents that are produced in different applications, and have them appear on the recipient's computer as originally intended. PDF files can be viewed using Adobe Reader® which is available at no cost.

#### picture archiving and communication system (PACS)

An information system used to receive, store, retrieve, display, and distribute medical images.

#### procedure type

The type of procedure performed, for example, Obstetric or Kidney. Sometimes referred to as exam type.

#### Projection X-Ray

The original radiology scanning device. Projection x-ray produces images through the projection of x-rays directly through a patient onto a flat receptor. For historical reasons, the output of projection x-rays is commonly referred to as plain film.

#### Radiologist

User role for individuals who interpret images within a study to produce a diagnosis.

#### Referring Physician

A physician who refers patients. Referring physicians may also review patient studies.

#### report

A report is a document, associated with a specific study or patient, containing information about the perceived medical condition of the patient at a particular point in time.

#### RTF

The extension used for documents stored in rich text format. RTF text files make it possible to transfer the original format of a document, for example font styles and paragraph indents, from one software application to another.

#### series

A grouping of related images within a study. For example, images may be related spatially, in terms of the imaging technique used, or the session during which they were created.

#### study

A group of images captured by an imaging device and associated with a patient. Sometimes called an exam.

#### Study List

A list of studies displayed by the Quick Viewer. The Study List lists studies and displays information about the studies and the patients associated with them. Users can open studies from the Study List.

#### Technologist

User role for individuals who capture images for new studies. They may also write preliminary reports and make initial image modifications.

#### toolbar

A collection of icons that represents application features.

#### Ultrasound Imaging (US)

This modality is also called Ultrasound Scanning or Sonography. Obstetric medicine relies heavily on Ultrasound scanning to provide images of the fetus and uterus.

#### viewport

A panel on the screen that holds a series of images.

#### voice clip

An audio message that is created using McKesson Radiology™ Voice Clips. Voice clips are attached to studies and can be accessed. Voice clips are stored as WAV files.

#### WAV

The extension used for digital audio data files such as voice clips.

#### window

A panel on the computer screen.

#### Window/Level

Image processing term. Parameters that are used to adjust the brightness and contrast of an image. They define how the captured image intensities will be displayed on the computer monitor. Level controls the brightness of the image and Window controls the contrast. All image points with intensities outside of the range this is defined by Window/Level will be displayed black, if they are too dark, or white if they are too bright.

#### Windows Media® Player

Used to view cine clips and play voice clips stored on the McKesson Radiology™ Disc media.

#### X-Ray Angiography (XA)

A radiological imaging modality that creates digital images (called angiograms) of the blood vessels. It is used to diagnose blockages and other blood vessel problems.

#### X-Ray imaging

A type of irradiation used for imaging purposes that can penetrate most substances except heavy metals. X-ray imaging is the most common imaging technique used in clinical practice.

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