暗記メーカー

ch 14&15

ch 14&15

17問 • 1年前

ユーザ名非公開

問題一覧

1

What is the rationale for the ALARA principle?

patient exposure

2

Which of the following is associated with uniform brightness?

compensation

3

An entire ultrasound image is too dark, but of uniform brightness. Which of the following is the first adjustment that should be made to make the image brighter?

increase output power

4

An entire ultrasound image is too bright, but of uniform brightness. Which of the following is the first adjustment that should be made to make the image darker?

decrease output power

5

Preamplification processes extremely weak signals that are susceptible to noise and often takes place in the transducer.

true

6

Which is not a receiver function

D to A conversion

7

Demodulation is a performed by the

receiver

8

Voltage pulses from the pulser go to the

transducer elements

9

The __________ converts the scan line data into images for the frame of display.

image processor

10

The place where the ultrasound beam originates is in the

pulser

11

The frequency of the ______ determines the frequency of the ultrasound pulse (PRF).

voltage pulse

12

The ratio of the largest power to the smallest power the receiver can handle is the

dynamic range

13

The acoustic power output of the transducer is determined by

the intensity of the voltage sent to the elements

14

the dynamic range is adjusted by the process of

compression

15

What is the number of binary digits required to store 29 levels of gray?

5

16

What happens to a digital image when the pixel density increases?

spatial detail improves

17

What happens to an image when the # bits allocated to each pixel increases?

more shades of gray

ch 6 AP

ch 6 AP

ユーザ名非公開 · 20問 · 1年前

ch 6 AP

ch 6 AP

20問 • 1年前

ユーザ名非公開

ch 9

ch 9

ユーザ名非公開 · 15問 · 1年前

ch 9

ch 9

15問 • 1年前

ユーザ名非公開

ch 11

ch 11

ユーザ名非公開 · 15問 · 1年前

ch 11

ch 11

15問 • 1年前

ユーザ名非公開

ch 16

ch 16

ユーザ名非公開 · 15問 · 1年前

ch 16

ch 16

15問 • 1年前

ユーザ名非公開

ch 12

ch 12

ユーザ名非公開 · 15問 · 1年前

ch 12

ch 12

15問 • 1年前

ユーザ名非公開

ch 13

ch 13

ユーザ名非公開 · 15問 · 1年前

ch 13

ch 13

15問 • 1年前

ユーザ名非公開

ch 14

ch 14

ユーザ名非公開 · 15問 · 1年前

ch 14

ch 14

15問 • 1年前

ユーザ名非公開

ch 17

ch 17

ユーザ名非公開 · 15問 · 1年前

ch 17

ch 17

15問 • 1年前

ユーザ名非公開

ch 19 (1)

ch 19 (1)

ユーザ名非公開 · 14問 · 1年前

ch 19 (1)

ch 19 (1)

14問 • 1年前

ユーザ名非公開

ch 15

ch 15

ユーザ名非公開 · 5問 · 1年前

ch 15

ch 15

5問 • 1年前

ユーザ名非公開

ch 4

ch 4

ユーザ名非公開 · 84問 · 1年前

ch 4

ch 4

84問 • 1年前

ユーザ名非公開

ch 9,10,11

ch 9,10,11

ユーザ名非公開 · 22問 · 1年前

ch 9,10,11

ch 9,10,11

22問 • 1年前

ユーザ名非公開

ch 12 & 13

ch 12 & 13

ユーザ名非公開 · 23問 · 1年前

ch 12 & 13

ch 12 & 13

23問 • 1年前

ユーザ名非公開

9-17

9-17

ユーザ名非公開 · 80問 · 1年前

9-17

9-17

80問 • 1年前

ユーザ名非公開

ch18

ch18

ユーザ名非公開 · 53問 · 1年前

ch18

ch18

53問 • 1年前

ユーザ名非公開

ch19-20

ch19-20

ユーザ名非公開 · 34問 · 1年前

ch19-20

ch19-20

34問 • 1年前

ユーザ名非公開

ch21-22

ch21-22

ユーザ名非公開 · 20問 · 1年前

ch21-22

ch21-22

20問 • 1年前

ユーザ名非公開

問題一覧

1

What is the rationale for the ALARA principle?

patient exposure

2

Which of the following is associated with uniform brightness?

compensation

3

An entire ultrasound image is too dark, but of uniform brightness. Which of the following is the first adjustment that should be made to make the image brighter?

increase output power

4

An entire ultrasound image is too bright, but of uniform brightness. Which of the following is the first adjustment that should be made to make the image darker?

decrease output power

5

Preamplification processes extremely weak signals that are susceptible to noise and often takes place in the transducer.

true

6

Which is not a receiver function

D to A conversion

7

Demodulation is a performed by the

receiver

8

Voltage pulses from the pulser go to the

transducer elements

9

The __________ converts the scan line data into images for the frame of display.

image processor

10

The place where the ultrasound beam originates is in the

pulser

11

The frequency of the ______ determines the frequency of the ultrasound pulse (PRF).

voltage pulse

12

The ratio of the largest power to the smallest power the receiver can handle is the

dynamic range

13

The acoustic power output of the transducer is determined by

the intensity of the voltage sent to the elements

14

the dynamic range is adjusted by the process of

compression

15

What is the number of binary digits required to store 29 levels of gray?

5

16

What happens to a digital image when the pixel density increases?

spatial detail improves

17

What happens to an image when the # bits allocated to each pixel increases?

more shades of gray