Intro To Digital Radiography / PACS - Questions
With Fully Explained Solutions
This type of radiography uses film in cassettes, intensifying screens and
chemical processing. Correct Answer - Conventional radiography
First CT scanner in what decade? Correct Answer - 1970's
Inventor of CT Correct Answer - Godfrey Hounsfield
MRI commercially available in what decade? Correct Answer - 1980's
Imaging acquisition process that produces an electronic image that can be
viewed and manipulated on a computer.
Recording radiographic images as numerical data Correct Answer -
Digital imaging
What are two type of detectors used in digital imaging? Correct Answer -
PSP (photostimulable phosphor) and FPD
Previously known as computed radiography or CR Correct Answer - PSP
*TRUE OR FALSE*
PSP is a cassette based system Correct Answer - True
What type of reader is used in psp systems? Correct Answer - Uses
storage phosphor plates reader
In conventional radiography, film is placed on or between what? Correct
Answer - intensifying screens
Intensifying screens when struck by x-rays emit what? Correct Answer -
*light*. That light then exposes the film in proportion to the amount of energy
of the x-rays incident on the screen.
, One of the first uses of digital imaging in medicine was with the introduction
of... Correct Answer - CT scanners
The earliest CT unit built by Hounsfield took how long to acquire a single slice
of information? Correct Answer - Several hours
The first CT scanners were built for imaging what? Correct Answer -
head only
Most flat panel detector (FPD) systems use what to form an image?
Correct Answer - Flat panel dectectors use an x-ray absorber material
coupled to a thin film transistor or a charge coupled device (CCD) to form the
image.
FPD can be divided into two categories. What are they? Correct Answer -
Indirect capture and Direct capture
This type of flat panel detector devices *absorb x-rays and convert them into
light*. That light is collected by an area CCD or thin film transistor (TFT) array
and *then converted into electrical signal* that is sent to the computer for
processing and viewing. Correct Answer - *Indirect capture* digital
radiography devices (review page 9 pictures)
This type of flat panel detector devices convert the incident x-ray energy
*directly* into an electrical signal. Correct Answer - *Direct capture*
digital radiography (review page 9 pictures)
What are the two types of digital imaging? Correct Answer - PSP and
FPD
What are the two types of FPD? Correct Answer - Direct capture and
Indirect capture
All of the following are components of PACS Correct Answer - - Web
access
- Multiple interfaces
- Reading stations
With Fully Explained Solutions
This type of radiography uses film in cassettes, intensifying screens and
chemical processing. Correct Answer - Conventional radiography
First CT scanner in what decade? Correct Answer - 1970's
Inventor of CT Correct Answer - Godfrey Hounsfield
MRI commercially available in what decade? Correct Answer - 1980's
Imaging acquisition process that produces an electronic image that can be
viewed and manipulated on a computer.
Recording radiographic images as numerical data Correct Answer -
Digital imaging
What are two type of detectors used in digital imaging? Correct Answer -
PSP (photostimulable phosphor) and FPD
Previously known as computed radiography or CR Correct Answer - PSP
*TRUE OR FALSE*
PSP is a cassette based system Correct Answer - True
What type of reader is used in psp systems? Correct Answer - Uses
storage phosphor plates reader
In conventional radiography, film is placed on or between what? Correct
Answer - intensifying screens
Intensifying screens when struck by x-rays emit what? Correct Answer -
*light*. That light then exposes the film in proportion to the amount of energy
of the x-rays incident on the screen.
, One of the first uses of digital imaging in medicine was with the introduction
of... Correct Answer - CT scanners
The earliest CT unit built by Hounsfield took how long to acquire a single slice
of information? Correct Answer - Several hours
The first CT scanners were built for imaging what? Correct Answer -
head only
Most flat panel detector (FPD) systems use what to form an image?
Correct Answer - Flat panel dectectors use an x-ray absorber material
coupled to a thin film transistor or a charge coupled device (CCD) to form the
image.
FPD can be divided into two categories. What are they? Correct Answer -
Indirect capture and Direct capture
This type of flat panel detector devices *absorb x-rays and convert them into
light*. That light is collected by an area CCD or thin film transistor (TFT) array
and *then converted into electrical signal* that is sent to the computer for
processing and viewing. Correct Answer - *Indirect capture* digital
radiography devices (review page 9 pictures)
This type of flat panel detector devices convert the incident x-ray energy
*directly* into an electrical signal. Correct Answer - *Direct capture*
digital radiography (review page 9 pictures)
What are the two types of digital imaging? Correct Answer - PSP and
FPD
What are the two types of FPD? Correct Answer - Direct capture and
Indirect capture
All of the following are components of PACS Correct Answer - - Web
access
- Multiple interfaces
- Reading stations
