Digital imaging week 3

Question 1

what are the physical components of computer and an ex

Answer 1

Hardware

keyboard, CPU, monitor

Question 2

what is a computer programs and a few examples

Answer 2

software

word, OS

Question 3

what is used to input info and an example

Answer 3

Input device

keyboard

Question 4

what is used to output info. to user and an ex

Answer 4

output device

monitor

Question 5

what is used to store info and an ex

Answer 5

storage device

flash drive, hard drive

Question 6

What does RAM stand for

Answer 6

random access memory (temporary)

Question 7

What does ROM stand for

Answer 7

read only memory (permanent)

Question 8

2 types of computer network

Answer 8

WAN and LAN

Question 9

what is WAN and an ex

Answer 9

wide area network

internet

Question 10

what is LAN and an ex

Answer 10

local area network

intranet

Question 11

the binary system operate with a

Answer 11

2 symbol alphabet

Question 12

0= & 1=

Answer 12

off

on

Question 13

bit=

Answer 13

0 or 1

Question 14

byte=

Answer 14

8 bits

Question 15

kilobyte=

Answer 15

1024 byte

Question 16

Megabyte=

Answer 16

1 million byte

Question 17

Gigabyte=

Answer 17

1 billion byte

Question 18

Terabyte=

Answer 18

1 thousand billion bytes

Question 19

each binary digit is called a

Answer 19

bit

Question 20

an 8 word bit is a

Answer 20

byte

Question 21

what is an algorithum

Answer 21

systematic application of highly complex mathematical formulas

Question 22

Algorithms are essential to the way computers _ why?

Answer 22

process info
the computer program is essentially an algorithm that tells the computer what specific steps to perform in order to carry out a specified task

Question 23

what is a compression technique achieved by compressing a range of values to a single quantum value

Answer 23

quantization

Question 24

by reducing the # of discrete symbols in a given stream, the stream becomes

Answer 24

more compressible

Question 25

compression is used to _

Answer 25

free up data space

Question 26

compression is a process of converting a into a coded image then converting a into a decoded image known as _ method

Answer 26

raw image
coded image
compression method

Question 27

what is the purpose or compression

Answer 27

to make the coded image as small as possible

Question 28

the decoded image has to be acceptably close to the

Answer 28

raw image

Question 29

if the decoded image is identical to the raw image (reversible); lower compression levels

Answer 29

lossless

Question 30

if the decoded image differs from the raw image (irreversible); higher compression levels

Answer 30

Lossy

Question 31

process of partitioning a digital image into multiple regions (sets pixel)

Answer 31

segmentation

Question 32

what is the goal for segmentation

Answer 32

to simplify &/or change the representation of an image into something that is more meaningful and easier to analyze

Question 33

segmentation is typically used to locate

Answer 33

objects and boundaries (lines, curves, etc)

Question 34

Digital Radiography is an image produced w/either a _ beam intercepted by a _or an x-ray beam intercepted by a

Answer 34

fan x-ray beam
linear array of radiation detectors
photostimulable phosphor plate or a direct capture solid-state device

Question 35

Teleradiography is the transmission of

Answer 35

patients images from one location to another for the purpose of sharing studies with other physicians

Question 36

Teleradiography improves care by allowing radiologists to

Answer 36

provide services w/out being at the location

Question 37

Teleradiography is used through

Answer 37

internet, phone, WAN, and LAN