Principles of Radiographic Imaging
Preliminary study to determining illnesses.
diagnostic radiologist - conduct general imaging examination of the entire human body
digital radiography - digitally generated images take the form of electronic data stored in
computer through pacs. eliminates film processing room and storage room
exposure time - duration of x-ray emission. higher exposure time allows more x-ray to exit the
beam.
Film-based to Filmless - Imaged is processed after exposing it to radiation.
Done with caution and systemic step by step procedures.
Can view on monitors due to technological advancement.
high voltage generator - serve as its power source. transformer transforms electric current and
potential into higher or lower intensity. rectifier device that allows current flow in only one
direction
imaging consideration - radiographer must recognize basic equipment used to perform
efficiently and effectively
, imaging grid - eliminate scatter radiation.
decreases density but improve the image contrast.
Imaging modalities - specialization in medical imaging to operate machine designed with its own
data acquisition
automatic processing - follows the same steps in manual processing but all done by the machine
automated operation. uses roller transport system
casette and intensifying screen - a flat surface coated with phosphors that emits light when
exposed to x-ray
holds the film during examination and prevent light leakage during use and transport
characteristics of a good radiograph - adequate exposure factor are used
adequate penetration of xtray is evident on the part of interest
sufficient radiographic density and contrast or present
field size selection is appropriate
motion is absent during exposure
anatomic part being examine is properly positioned
proper accessories have been utilized
control console - means of control or operate. controls the voltage and current and time of
exposure. located behind a shielded wall.
Development of Radiology - Very important diagnostic tool.
Can readily view body structures through image.
kilovoltage peak - controls electric voltage. high-energy x-rays this controls x-ray quality and
image contrast.
Preliminary study to determining illnesses.
diagnostic radiologist - conduct general imaging examination of the entire human body
digital radiography - digitally generated images take the form of electronic data stored in
computer through pacs. eliminates film processing room and storage room
exposure time - duration of x-ray emission. higher exposure time allows more x-ray to exit the
beam.
Film-based to Filmless - Imaged is processed after exposing it to radiation.
Done with caution and systemic step by step procedures.
Can view on monitors due to technological advancement.
high voltage generator - serve as its power source. transformer transforms electric current and
potential into higher or lower intensity. rectifier device that allows current flow in only one
direction
imaging consideration - radiographer must recognize basic equipment used to perform
efficiently and effectively
, imaging grid - eliminate scatter radiation.
decreases density but improve the image contrast.
Imaging modalities - specialization in medical imaging to operate machine designed with its own
data acquisition
automatic processing - follows the same steps in manual processing but all done by the machine
automated operation. uses roller transport system
casette and intensifying screen - a flat surface coated with phosphors that emits light when
exposed to x-ray
holds the film during examination and prevent light leakage during use and transport
characteristics of a good radiograph - adequate exposure factor are used
adequate penetration of xtray is evident on the part of interest
sufficient radiographic density and contrast or present
field size selection is appropriate
motion is absent during exposure
anatomic part being examine is properly positioned
proper accessories have been utilized
control console - means of control or operate. controls the voltage and current and time of
exposure. located behind a shielded wall.
Development of Radiology - Very important diagnostic tool.
Can readily view body structures through image.
kilovoltage peak - controls electric voltage. high-energy x-rays this controls x-ray quality and
image contrast.
