Radiography Basics: Patient
Positioning and Imaging Techniques 1
Radiographer - ANS>>A radiologic technologist who administers ionizing radiation to
perform radiographic procedures. They produce radiographic procedures at the request
of a physician.
Radiologic technology - ANS>>a health care profession that includes all diagnostic
imaging technologists and radiation therapists.
Radiographers must evaluate an image for _______ quality, _______, and _________
relative to the diagnosis or the reason for the procedure. - ANS>>technical, accuracy,
appropriateness
ALARA - ANS>>As Low As Reasonably Achievable
Patient care responsibilities of the radiographer include: - ANS>>communication,
assessment, monitoring, and support.
To ensure patient safety and quality of care, each radiographer must adhere to the
______ and _______ code of the profession. - ANS>>moral, ethical
Revised and adopted the radiologic current code of ethics - ANS>>The American
Society of Radiologic Technologists and the American Registry of Radiologic
Technologists
The ASRT Code of Ethics - ANS>>1. The RT conducts themself in a professional
manner, responds to patient needs, and supports team members in providing quality
patient care.
2. The RT provides services to humanity with full respect for the dignity of humankind.
3. The RT delivers care without any discrimination.
4. The RT practices technology with knowledge, uses equipment appropriately, and
employs procedures and techniques appropriately.
5. The RT assesses situations and acts in the best interest of the patient.
6. The RT acts to obtain pertinent information (through observation and communication)
regarding the patient that will assist the physician in treating the patient, but knows that
interpretation and diagnosis are outside the scope of the profession.
7. The RT performs many tasks, including an expertise in minimizing the radiation
exposure to the patients, co-workers, and themselves.
8. The RT practices ethical conduct appropriate to the profession and protects the
patient's right to quality care.
,9. The RT respects the patient's right to privacy and only reveals confidential
information when required by law or to protect the welfare of the patient or the
community.
10. The RT continues to further knowledge.
Image Receptor - ANS>>the device that receives the energy of the x-ray beam and
forms the image of the body part.
Cassette with film - ANS>>a device that contains special intensifying screens that emit
light when struck by x-rays and imprint the x-ray image on film.
Photostimulable storage phosphor image plate - ANS>>a device, used for computed
radiography, the IP stores much of the x-ray energy for later processing. After exposure,
the cassette is inserted into a CR reader device, which scans the IP and releases the
stored x-ray energy pattern as light. The emitted light is converted into digital format.
Solid-state digital detectors (aka digital radiography) - ANS>>a flat panel image receptor
that converts x-ray energy into a digital signal. The digital signal converter may be a
thin-film transistor array or a charge-coupled device. The portable solid-state detectors
may be "tethered" directly to the digital imaging system computer or may be connected
wirelessly.
Fluoroscopic image receptor - ANS>>"real-time" imaging; guide procedures or capture
full-motion video.
Radiograph - ANS>>the image recorded by exposing any of the image receptors to x-
rays
The information that assists in the diagnosis and treatment of the patient - ANS>>The
information obtained by performing the radiographic examination that generally shows a
presence (or absence) of abnormalities or trauma
Superimposition - ANS>>The relationship of the anatomic superimposition to size,
shape, and angulation (in the way).
Adjacent structures - ANS>>Each anatomic structure must be compared with adjacent
structures and reviewed to ensure that the structure is present and properly shown.
What are the two technical factors? - ANS>>kVp and mAs
Optical density - ANS>>The degree of blackening (overall) when associated with
radiographic film and as brightness when appearance on a digital display monitor is
described. The primary controlling factor is the milliampere-second (mAs).
Contrast - ANS>>The different shade of gray on an x-ray/ the difference in the density
on any two areas on a radiograph (kVp).
, Contrast resolution refers to - ANS>>digital imaging systems.
mAs= - ANS>>mA*seconds
The exposure is directly related to the - ANS>>mAs
Low contrast images display - ANS>>many density levels.
High contrast images display - ANS>>few density levels.
Bit depth - ANS>>the number of brightness values possible for each pixel.
Spatial resolution - ANS>>The ability to visualize small structures
Spatial resolution is controlled primarily by: - ANS>>1. IP phosphor
2. Flat panel detector DEL size
3. Geometry
4. Distance
5. Focal spot size
6. Motion
7. Film
8. Intensifying screen
Magnification - ANS>>Anatomy appearing larger on a radiograph than its actual size.
T/F: Every radiograph has magnification. - ANS>>TRUE
T/F: Any other structure but skin can be in contact with the IR. - ANS>>FALSE
Object to image receptor distance - ANS>>How far the body part is from the IR
Source to image receptor distance - ANS>>How far the x-ray tube is from the IR
Magnification ___________ with increased OID and decreased SID. - ANS>>Increases
Shape distortion - ANS>>misrepresentation by unequal magnification of the actual
shape of the structure being examined
Anatomic position - ANS>>The position of reference in which the patient stands facing
you, arms at the side, with the palms of the hands forward.
Radiographs are typically oriented on the display device so that the person looking at
the image sees the body part placed in ________________ - ANS>>anatomical
position
Positioning and Imaging Techniques 1
Radiographer - ANS>>A radiologic technologist who administers ionizing radiation to
perform radiographic procedures. They produce radiographic procedures at the request
of a physician.
Radiologic technology - ANS>>a health care profession that includes all diagnostic
imaging technologists and radiation therapists.
Radiographers must evaluate an image for _______ quality, _______, and _________
relative to the diagnosis or the reason for the procedure. - ANS>>technical, accuracy,
appropriateness
ALARA - ANS>>As Low As Reasonably Achievable
Patient care responsibilities of the radiographer include: - ANS>>communication,
assessment, monitoring, and support.
To ensure patient safety and quality of care, each radiographer must adhere to the
______ and _______ code of the profession. - ANS>>moral, ethical
Revised and adopted the radiologic current code of ethics - ANS>>The American
Society of Radiologic Technologists and the American Registry of Radiologic
Technologists
The ASRT Code of Ethics - ANS>>1. The RT conducts themself in a professional
manner, responds to patient needs, and supports team members in providing quality
patient care.
2. The RT provides services to humanity with full respect for the dignity of humankind.
3. The RT delivers care without any discrimination.
4. The RT practices technology with knowledge, uses equipment appropriately, and
employs procedures and techniques appropriately.
5. The RT assesses situations and acts in the best interest of the patient.
6. The RT acts to obtain pertinent information (through observation and communication)
regarding the patient that will assist the physician in treating the patient, but knows that
interpretation and diagnosis are outside the scope of the profession.
7. The RT performs many tasks, including an expertise in minimizing the radiation
exposure to the patients, co-workers, and themselves.
8. The RT practices ethical conduct appropriate to the profession and protects the
patient's right to quality care.
,9. The RT respects the patient's right to privacy and only reveals confidential
information when required by law or to protect the welfare of the patient or the
community.
10. The RT continues to further knowledge.
Image Receptor - ANS>>the device that receives the energy of the x-ray beam and
forms the image of the body part.
Cassette with film - ANS>>a device that contains special intensifying screens that emit
light when struck by x-rays and imprint the x-ray image on film.
Photostimulable storage phosphor image plate - ANS>>a device, used for computed
radiography, the IP stores much of the x-ray energy for later processing. After exposure,
the cassette is inserted into a CR reader device, which scans the IP and releases the
stored x-ray energy pattern as light. The emitted light is converted into digital format.
Solid-state digital detectors (aka digital radiography) - ANS>>a flat panel image receptor
that converts x-ray energy into a digital signal. The digital signal converter may be a
thin-film transistor array or a charge-coupled device. The portable solid-state detectors
may be "tethered" directly to the digital imaging system computer or may be connected
wirelessly.
Fluoroscopic image receptor - ANS>>"real-time" imaging; guide procedures or capture
full-motion video.
Radiograph - ANS>>the image recorded by exposing any of the image receptors to x-
rays
The information that assists in the diagnosis and treatment of the patient - ANS>>The
information obtained by performing the radiographic examination that generally shows a
presence (or absence) of abnormalities or trauma
Superimposition - ANS>>The relationship of the anatomic superimposition to size,
shape, and angulation (in the way).
Adjacent structures - ANS>>Each anatomic structure must be compared with adjacent
structures and reviewed to ensure that the structure is present and properly shown.
What are the two technical factors? - ANS>>kVp and mAs
Optical density - ANS>>The degree of blackening (overall) when associated with
radiographic film and as brightness when appearance on a digital display monitor is
described. The primary controlling factor is the milliampere-second (mAs).
Contrast - ANS>>The different shade of gray on an x-ray/ the difference in the density
on any two areas on a radiograph (kVp).
, Contrast resolution refers to - ANS>>digital imaging systems.
mAs= - ANS>>mA*seconds
The exposure is directly related to the - ANS>>mAs
Low contrast images display - ANS>>many density levels.
High contrast images display - ANS>>few density levels.
Bit depth - ANS>>the number of brightness values possible for each pixel.
Spatial resolution - ANS>>The ability to visualize small structures
Spatial resolution is controlled primarily by: - ANS>>1. IP phosphor
2. Flat panel detector DEL size
3. Geometry
4. Distance
5. Focal spot size
6. Motion
7. Film
8. Intensifying screen
Magnification - ANS>>Anatomy appearing larger on a radiograph than its actual size.
T/F: Every radiograph has magnification. - ANS>>TRUE
T/F: Any other structure but skin can be in contact with the IR. - ANS>>FALSE
Object to image receptor distance - ANS>>How far the body part is from the IR
Source to image receptor distance - ANS>>How far the x-ray tube is from the IR
Magnification ___________ with increased OID and decreased SID. - ANS>>Increases
Shape distortion - ANS>>misrepresentation by unequal magnification of the actual
shape of the structure being examined
Anatomic position - ANS>>The position of reference in which the patient stands facing
you, arms at the side, with the palms of the hands forward.
Radiographs are typically oriented on the display device so that the person looking at
the image sees the body part placed in ________________ - ANS>>anatomical
position
