Ch. 16 Diagnostic Imaging Homework Questions with
Correct Answers
A diagnostic technique used to image moving structures Correct
Answer-Fluoroscopy
The computer system used to store and transmit digital x-ray images.
Correct Answer-PACS
An imaging technique that uses cassettes to produce a digital image.
Correct Answer-Computed radiography
A dark structure on an ultrasound image is said to be ______________.
Correct Answer-Anechoic (ex. bladder full of urine)
A structure that has the same brightness as adjacent structures on an
ultrasound image is said to be ________. Correct Answer-Isoechoic
A type of ultrasound display not used in practice. Correct Answer-A-
mode
A measurement of absorbed radiation that takes into account biologic
effectiveness of radiation. Correct Answer-Rem
A universal format or standard for digital image storage, display,
manipulation, and retrieval. Correct Answer-DICOM
,Allows transmission of x-ray images across the internet to referral
facilities. Correct Answer-Teleradiology
Also know as "brightness mode." Correct Answer-B-mode
A structure that produces more echoes than adjacent structures is said to
be __________. Correct Answer-Hyperechoic
The unit of absorbed dose of ionizing radiation. Correct Answer-Rad
A measurement of sound frequency. Correct Answer-Hz
An imaging technique that doesn't require use of film. Correct Answer-
Digital radiography
An ultrasound display used primarily for heart exams. Correct Answer-
M-mode
Requires less radiation. (fast screens or slow screens) Correct Answer-
Fast screens
Produces poorer detail. (fast screens or slow screens) Correct Answer-
Fast screens
, Also called "fine screens." (fast screens or slow screens) Correct
Answer-Slow screens
Has larger crystals. (fast screens or slow screens) Correct Answer-Fast
screens
Emit less light. (fast screens or slow screens) Correct Answer-Slow
screens
Also called "detail screens." (fast screens or slow screens) Correct
Answer-Slow screens
Best for imaging small exotic animals. (fast screens or slow screens)
Correct Answer-Slow screens
Changing the kVp from 50 to 60. (↑ density, ↓ density, no change)
Correct Answer-↑ density
Changing the object -film distance from 6in to 12in. (↑ density, ↓
density, no change) Correct Answer-no change in density
Changing mA from 300 to 200. (↑ density, ↓ density, no change) Correct
Answer-↓ density
Changing the exposure time from 1/2 sec to 1/4 sec. (↑ density, ↓
density, no change) Correct Answer-↓ density
Correct Answers
A diagnostic technique used to image moving structures Correct
Answer-Fluoroscopy
The computer system used to store and transmit digital x-ray images.
Correct Answer-PACS
An imaging technique that uses cassettes to produce a digital image.
Correct Answer-Computed radiography
A dark structure on an ultrasound image is said to be ______________.
Correct Answer-Anechoic (ex. bladder full of urine)
A structure that has the same brightness as adjacent structures on an
ultrasound image is said to be ________. Correct Answer-Isoechoic
A type of ultrasound display not used in practice. Correct Answer-A-
mode
A measurement of absorbed radiation that takes into account biologic
effectiveness of radiation. Correct Answer-Rem
A universal format or standard for digital image storage, display,
manipulation, and retrieval. Correct Answer-DICOM
,Allows transmission of x-ray images across the internet to referral
facilities. Correct Answer-Teleradiology
Also know as "brightness mode." Correct Answer-B-mode
A structure that produces more echoes than adjacent structures is said to
be __________. Correct Answer-Hyperechoic
The unit of absorbed dose of ionizing radiation. Correct Answer-Rad
A measurement of sound frequency. Correct Answer-Hz
An imaging technique that doesn't require use of film. Correct Answer-
Digital radiography
An ultrasound display used primarily for heart exams. Correct Answer-
M-mode
Requires less radiation. (fast screens or slow screens) Correct Answer-
Fast screens
Produces poorer detail. (fast screens or slow screens) Correct Answer-
Fast screens
, Also called "fine screens." (fast screens or slow screens) Correct
Answer-Slow screens
Has larger crystals. (fast screens or slow screens) Correct Answer-Fast
screens
Emit less light. (fast screens or slow screens) Correct Answer-Slow
screens
Also called "detail screens." (fast screens or slow screens) Correct
Answer-Slow screens
Best for imaging small exotic animals. (fast screens or slow screens)
Correct Answer-Slow screens
Changing the kVp from 50 to 60. (↑ density, ↓ density, no change)
Correct Answer-↑ density
Changing the object -film distance from 6in to 12in. (↑ density, ↓
density, no change) Correct Answer-no change in density
Changing mA from 300 to 200. (↑ density, ↓ density, no change) Correct
Answer-↓ density
Changing the exposure time from 1/2 sec to 1/4 sec. (↑ density, ↓
density, no change) Correct Answer-↓ density
