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Chapter 8 BPositions
Basic Positioning
Question | Answer |
---|---|
3 Types of Projections | AP,PA,Lateral |
Oblique | Slanted or Sloped |
Lateral | Side View |
Posterior | Behind or Rear |
Anterior | Front |
Right angle views are necessary to: | avoid superimposed structures that may obsure pathology, provide alignment of fractured bones or placement, demonstrate foreign body localization. |
Comparison Images | are taken to provide additional diagnostic info for "comparison" of the "affected" and "non affected" side. |
Erect or Upright | for lower limb and pelvic xrays so when erect position lower limbs is recieving weight of entire body. |
Decubitus | Any position assumed by a patient while lying in bed. |
Motion Control | When motion occurs it causes blurring of image or loss of definition. Proper alignment of pt reduces motion. |
3 types of film markers | Pt's identification, date and L or R side. |
Body Habitus | Physical appearance of the body or body build |
Sthenic | Average or normal body shape. |
Hyposthenic | Slender or thin body shape. |
Asthenic | Extremely slender or frail body shape. |
Hypersthenic | Large or stocky (overweight) body shape. |
Anatomic Position | Standing erect facing forward, feet together, arms down by each side, palms facing forward. |
Body Planes | are used to identify the body in different sections. |
Coronal Plane | Divides the body into Anterior and Posterior portions. |
Sagiittal Plane | Divides the body into R & L portions vertically. |
Transverse | Divides Horizontal or axial plane is at right angles to the vertical axis. |
Supine | Lying on back |
Prone | Lying face down |
Decubitus | Lying down w/ horizontal xray beam. |
Recumbent | Lying down any position. |
Anterior | Facing film. |
Posterior | Facing tube. |
Oblique | erect or lying down |
Left Anterior Oblique | body rotated with Left Anterior portion of body closest to film. |
Right Anterior Oblique | body rotated with Right Anterior portion of body closest to film. |
Left Posterior Oblique | body rotated with Left Posterior portion of body closest to film. |
Right Posterior Oblique | body rotated with Right Posterior portion of body closest to film. |