Radiographic Terminology / Chapter 2 Flashcards
Planes
a straight line surface connecting two points
Sagittal Plane
vertical plane dividing the body into right and left parts
Midsagittal Plane
midline sagittal plane dividing the body into equal right and left parts
Coronal / Frontal Plane
the vertical plane dividing the body into anterior and posterior parts
Midcoronal Plane
midline coronal plane dividing the body into equal front and back parts
Horizontal (Transverse or Axial) Plane
plane that divides the body into top and bottom parts
Section
a “cut” surface or “slice” of an organ
Longitudinal Sections
sections running lengthwise
Transverse or Axial Sections (Cross-Sections)
taking a slice of the body
Infraorbitomeatal Line
line passing from the infraorbital margin through the superior boarder of the external auditory meatus to the midoccipital bone
Anterior (Ventral)
the front of the body
Posterior (Dorsal)
the back of the body
Plantar
the soles or posterior surface of the foot
Dorsum
the top or anterior surface of the foot
Palmar (Volar)
the palm of the hand
General Body Positions
terms used to indicate the patient’s general position
Supine
- general body position
- lying on the back
Prone
- general body position
- lying on the front / abdomen
- head may be turned to the side
Erect
- general body position
- an upright position
- to stand or sit erect
Recumbent (Reclining)
- general body position
- lying down in any position
Ventral Recumbent
lying face down (prone)
Dorsal Recumbent
lying on back (supine)
Lateral Recumbent
- lying on side
- side view
- right or left lateral
Trendelenburg Position
- general body position
- recumbent position where head is LOWER than feet
Fowler’s Position
- general body position
- recumbent position where head is HIGHER than feet
Specific Body Positions
described by the body part closest to the film or by the surface on which the patient is lying
Lateral Position
- specific body position
- refers to the side of or side view
Oblique Position
- specific body position
- slanted or angled position in which neither the sagittal or coronal body plane is at a right angle
Left Posterior Oblique (LPO) Position
oblique position where the left posterior aspect of the body is closest to the IR
Right Posterior Oblique (RPO) Position
oblique position where the right posterior aspect of the body is closest to the IR
Right Anterior Oblique (RAO) Position
oblique position where the right anterior aspect of the body is closest to the IR
Left Anterior Oblique (LAO) Position
oblique position where the left anterior aspect of the body is closest to the IR
Decubitus Positions
patient is lying down and the CR is also horizontal
Left Lateral Decubitus Position (AP Projection)
- patient lies on their left side and the x ray beam is horizontally going anterior to posterior
- posterior side is closest to IR
Right Lateral Decubitus Position (PA Projection)
- patient lies on their right side and the x ray beam is horizontally going posterior to anterior
- anterior side is closest to IR
Left Lateral Dorsal Decubitus Position
- patient lies on their back
- x ray beam is horizontal
- left side is closest to IR
Right Lateral Ventral Decubitus Position
- patient lies on their belly
- CR is horizontal
- right side is closest to the IR
Projection
term that describes the path of the CR
Posteroanterior (PA) Projection
- CR enters posterior side and exits anterior side
- anterior side is closest to the IR
Anteroposterior (AP) Projection
- CR enters anterior side and exits posterior side
- posterior side is closest to the IR
AP Oblique Projection
AP projection that is obliqued
PA Oblique Projection
PA projection that is obliqued
Lateral Projections
side to side projection of the CR described by the path of the CR
Axial Projection
tube or body / body part is angled
Tangential Projection
- skims the surface
- used for curved bones mostly
Apical AP Projection / Lordotic Position
specific AP chest projection that shows the apices of the lungs
Transthoracic Projection
lateral or side to side projections through the thorax
Medial
toward the center or median plane
Lateral
away from the center
Proximal
near the source or beginning
Distal
away from the source
Cephalad or Superior
toward the head
Caudad or Inferior
toward the feet
Ipsilateral
on the same side of the body or part
Contralateral
on the opposite side of the body
Interior (Internal)
inside of something
Exterior (External)
situated on or near the outside
Superficial
nearer to the skin surface
Deep
further from the skin surface
Flexion
- bending the joint
- angle is decreased
- example: head or wrist facing down
Extension
- extending or straightening a joint
- angle is increased
- example: head or wrist facing up
Hyperextension
- extending a join beyond the straight or neutral position
- example: having patient look at ceiling
Ulnar Flexion of Wrist
- to decrease the angle between hand and the ulnar side of the forearm
- moving hand inward
Radial Flexion of the Wrist
- to decrease the angle between hand and the radial side of the forearm
- moving hand outward
Dorsiflexion of the Ankle
- to decrease the angle between the top of the foot and the lower leg
- moving foot and toes up
Plantar Flexion of the Ankle
- extending the ankle joint
- pointing toes down
Eversion
turning the foot out
Inversion
turning the foot in
Medial Rotation (Internal Rotation)
turning body part inward
Lateral Rotation (External Rotation)
turning body part outward
Abduction
turning body part away from the center
Adduction
turning body part toward the center
Supination
turning palm up into the anatomical position
Pronation
turning palm down the opposite of the anatomical position
Protraction
movement forward from a normal position
Retraction
a movement backward
Elevation
a lifting, raising, or moving a part superiorly
Depression
letting down, lowering or moving a part inferiorly
Circumduction
to move around in a circle
Tilt
slanting or tilting movement
Rotation
to turn or rotating motion