Radiographic Imaging Exam 1 with
Complete Solutions
1.) transmission of energy
2.) reflection of energy
3.) emission of energy - ANSWER-Three basic means of medical imaging production
X-ray, CT, Fluoroscopy - ANSWER-Examples of transmission imaging
beam of high energy photons pass through the body; form of electromagnetic radiation -
ANSWER-X-ray mechanism
Gathers transmission data from multiple perspectives, uses algorithms to reconstruct
slices of images - ANSWER-CT (Computed Tomography)
continuous detection; moving picture - ANSWER-Flouroscopy
Ultrasound - ANSWER-Example of reflection imaging
High-frequency sound waves are transmitted from the probe through conductive gel into
the body. Sounds that bounce back are collected and algorithms are used to create an
image - ANSWER-Ultrasound Mechanism
Creates images according to acoustic differences (instead of density) between various
tissues - ANSWER-Reflection Imaging Mechanism
MRI and nuclear medicine - ANSWER-Emission Imaging Examples
Distinguishes between the nuclear magnetic properties of various tissues, which differs
markedly from simple atomic density. - ANSWER-Emission Imaging Mechanism
Superior soft tissue differentiation capabilities; No ionizing radiation, generates images
using a magnetic field and radio waves - ANSWER-MRI (Magnetic Resonance Imaging)
Mechanism
Creates images by introducing radioisotopes into the human body and then detecting
the locations from which gamma rays are emitted. Gamma rays consist of photons, but
emitted from a different source than an x-ray
Involves ionizing radiation.
Reveal the uptake of a radioactive substance (radiotracer) into areas of reactive tissue
(bone or soft tissue)
, Radioactive compound given (technetium 99) -radionuclide that emits gamma rays
Wait a few hours, then scan whole body
Most metabolically active tissues will take up the most radioactivity
Will appear as "hot spots" in the images
Various other organs can be scanned with different radiotracers - ANSWER-Nuclear
Medicine Mechanism 1
cost-effective, good for identifying skeletal pathologies, not good for identifying muscle,
ligament, or tendon injuries. - ANSWER-Plain Film Radiography
high level of radiodensity; more bright - ANSWER-Radiopaque
low level of radiodensity; more dark - ANSWER-Radioluscent
gasses, fatty tissue, cartilage, bone, metals - ANSWER-radioluscent --> radiopaque
want more than one radiograph as close to 90 degrees to each other as possible -
ANSWER-One view is no view
PA, AP, Lateral, and Oblique - ANSWER-Common projections
View box (Illuminator)
"hot light"
Digital - computer screen - ANSWER-Radiograph Equipment
patient facing the person viewing - ANSWER-AP/PA View
same direction as path of beam - ANSWER-Lateral/Oblique View
dorsal aspects with digits pointing up - ANSWER-Hands/Feet Orientation
Alignment, Bone (density and dimension), Cartilage, Soft tissue - ANSWER-Viewing
Radiograph ABCS System
Size of bone
Number of bones
Shape and contour of bone
Bone and joint position - ANSWER-Alignment
General bone density
Focal bone density
Trabecular alteration - ANSWER-Bone Density
Joint Space
-width
-symmetry
Complete Solutions
1.) transmission of energy
2.) reflection of energy
3.) emission of energy - ANSWER-Three basic means of medical imaging production
X-ray, CT, Fluoroscopy - ANSWER-Examples of transmission imaging
beam of high energy photons pass through the body; form of electromagnetic radiation -
ANSWER-X-ray mechanism
Gathers transmission data from multiple perspectives, uses algorithms to reconstruct
slices of images - ANSWER-CT (Computed Tomography)
continuous detection; moving picture - ANSWER-Flouroscopy
Ultrasound - ANSWER-Example of reflection imaging
High-frequency sound waves are transmitted from the probe through conductive gel into
the body. Sounds that bounce back are collected and algorithms are used to create an
image - ANSWER-Ultrasound Mechanism
Creates images according to acoustic differences (instead of density) between various
tissues - ANSWER-Reflection Imaging Mechanism
MRI and nuclear medicine - ANSWER-Emission Imaging Examples
Distinguishes between the nuclear magnetic properties of various tissues, which differs
markedly from simple atomic density. - ANSWER-Emission Imaging Mechanism
Superior soft tissue differentiation capabilities; No ionizing radiation, generates images
using a magnetic field and radio waves - ANSWER-MRI (Magnetic Resonance Imaging)
Mechanism
Creates images by introducing radioisotopes into the human body and then detecting
the locations from which gamma rays are emitted. Gamma rays consist of photons, but
emitted from a different source than an x-ray
Involves ionizing radiation.
Reveal the uptake of a radioactive substance (radiotracer) into areas of reactive tissue
(bone or soft tissue)
, Radioactive compound given (technetium 99) -radionuclide that emits gamma rays
Wait a few hours, then scan whole body
Most metabolically active tissues will take up the most radioactivity
Will appear as "hot spots" in the images
Various other organs can be scanned with different radiotracers - ANSWER-Nuclear
Medicine Mechanism 1
cost-effective, good for identifying skeletal pathologies, not good for identifying muscle,
ligament, or tendon injuries. - ANSWER-Plain Film Radiography
high level of radiodensity; more bright - ANSWER-Radiopaque
low level of radiodensity; more dark - ANSWER-Radioluscent
gasses, fatty tissue, cartilage, bone, metals - ANSWER-radioluscent --> radiopaque
want more than one radiograph as close to 90 degrees to each other as possible -
ANSWER-One view is no view
PA, AP, Lateral, and Oblique - ANSWER-Common projections
View box (Illuminator)
"hot light"
Digital - computer screen - ANSWER-Radiograph Equipment
patient facing the person viewing - ANSWER-AP/PA View
same direction as path of beam - ANSWER-Lateral/Oblique View
dorsal aspects with digits pointing up - ANSWER-Hands/Feet Orientation
Alignment, Bone (density and dimension), Cartilage, Soft tissue - ANSWER-Viewing
Radiograph ABCS System
Size of bone
Number of bones
Shape and contour of bone
Bone and joint position - ANSWER-Alignment
General bone density
Focal bone density
Trabecular alteration - ANSWER-Bone Density
Joint Space
-width
-symmetry
