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Imaging Ch.18

Imaging Equipment

QuestionAnswer
Image Display, Storage and Communication The output digital image must first be converted to an analog signal before it can be viewed on a monitor. The computer uses special digital image software to manipulate the data for different purposes.
Image Processing A computer takes an input digital image and produces an output digital image. Input is in numerical form: output is in digital image form
Data Aquisition Being able to acquire the information that is input into the PACS system.
List all 3 Digital Imaging System Components for Image Compression Data Aquisition, Image Processing, and Image Display, Storage and Communication.
Lossy Compression is also called Irreversible Compression.
Lossy is used on.. Data associated with images.
Lossy Can compress images at a much higher compression rate and increases transmission speed with less storage space required. Sometimes information is lost that cannot be retrieved.
Lossless Compression is also called Reversible Compression.
Lossless is used on... Radiographic images.
Lossless Intended to reduce the size of the original image to speed up image transmission and reduced required data storage. Compresses image but does not lose any information.
Name the two types of compression Lossless and Lossy.
Image Compression The primary goal for image compression is to increase storage space by reducing file size and increase the speed to image transmission for large amounts of data.
HL10 Health Level 10. Also, a PACS language which is the standard for exchange of data usually between the radiology information system and the hospital information system.
LUT (look up table) Reference histogram of the luminance values derived during image acquisition.
Assession Numbers Unique identifiers associated with each radiographic exam. These numbers may be used by either HIS or RIS.
Worklist A list of patient names and exams to be preformed or that have previously been preformed.
Archive Like memory in a computer. Allows storage of images.
Intranet A privately maintained computer network that can be accessed only by authorized persons, especially members or employees of the organization that owns it.
Internet A vast computer network linking smaller computer networks worldwide (usually prec. by the). The Internet includes commercial, educational, governmental, and other networks, all of which use the same set of communications protocols.
How does radiology use the EMR? (5 steps) - Once the patient is registered with HIS, the information populates to the RIS. - From the RIS, patients' orders are entered. - An entered order is visualized by the RT on the Imaging Worklist and used to complete the exam.
How does radiology use the EMR? (5 steps): - Once a procedure has been completed by the RT and read by the radiologist the report is entered into the patients' EMR. - Previous images and reports are available for comparison.
EMR Electronic Medical Record
Teleradiology The process of remote transmission and viewing of medical images.
WAN (Wide Area Network) A series of LANS connected together usually be means of phonelines or other types of communication cables.
LAN (Local Area Network) A small area networked with a series of cables or wireless access points that allow computers to share information and devices on the same network.
Network Two or more computers that are connected with one another for the purpose of communicating data electronically.
PACS - Picture Archiving and Communication System This system electronically stores images and reports.
RIS - Radiology Information System Houses information about radiographic examinations and patients. This is where radiographic orders originate.
HIS - Hospital Information System Houses information about patients. It blends patient information, reporting and billing.
CAD - Computer Aided Detection/ Diagnosis Computer-based technology that helps the radiologist in identifying suspicious areas while reading a digitalized mammogram.
DICOM - Digital Imaging and Communication in Medicine A PACS language. A networking protocol developed in the early 90's and isused in virtually all hospitals worldwide.
DICOM - Digital Imaging and Communication in Medicine: It is designed to connect people,data and diverse systems, store display, retrieve, and printing medical imagesin all types of health care settings. It allows access to the same image, indifferent places, at the same time all at the touch of a button.
Created by: sassyrad
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