test bank for DIGITAL RADIOGRAPHY AND PACS 3rd edition by carter

TESTBANKFOR

DIGITAL
RADIOGRAPHY AND
PACS 3RDEDITION
BY
CARTER

, Chapter 02: Digital Imaging Characteristics
Carter: Digital Radiography and PACS, 3rd Edition


MULTIPLE CHOICE

1. Multiple numeric values divided into an array of small elements capable of being processed is
the definition of images. a. analog
b. digital
c. medical
d. radiographic
ANS: B OBJ: Differentiate between analog and digital images.

2. The continuous and varying levels of brightness and colors describe images. a. analog
b. digital
c. medical
d. radiographic
ANS: B OBJ: Differentiate between analog and digital images.

3. Critical characteristics of a digital image include all of the following except a. contrast
resolution.
b. noise efficiency.
c. sample resolution.
d. dose efficiency of the receptor
ANS: C OBJ: Differentiate between analog and digital images.

4. Which of the following statements is not true?
a. Matrix size can change without affecting the FOV.
b. FOV can change without affecting the matrix.
c. Changing the matrix or the FOV will change the size of the pixel.
d. Changing the matrix and the FOV will not change the size of the pixel.
ANS: D OBJ: Relate pixel size, matrix size, and FOV to each other.

5. Each square in a matrix is called a
a. matrix element.
b. picture element.
c. bit.
d. byte.
ANS: B OBJ: Define pixel and image matrix and characteristics of each.

6. The number of bits per pixel is known as bit
a. pitch.
b. depth.
c. height.
d. width.
ANS: B OBJ: Define pixel and image matrix and characteristics of each.

7. If a pixel has a bit depth of 29, the number of gray tones that pixel can produce is a. 256.