RAD 100 Basic Terms Attempt

• First column


  Page number in Merrill's
• Second column


  Name of the position, usually refers to body position
• TT


  Table top placement of imaging plate
• Bucky


  Placement of imaging plate in a holder that is beneath the table
• CR


  Central ray, the central point (centering) of the x-ray beam
• 8X10, 10X12


  Imaging plate size
• SID


  Source to image distance, 40" unless otherwise specified
• Lengthwise, crosswise


  Refers to the imaging plate orientation to the body part or to the table/chest stand
• Detent


  Placement of the x-ray tube in a locked position that is aligned to the transverse axis of the imaging plate when placed in the bucky
• Collimation


  The sizing of the x-ray beam
• Lead blockers


  Lead strips placed on the imaging plate to absorb unwanted radiation
• Anatomical Planes

  • Frontal/coronal - separates the body into anterior and posterior parts
  • Mid-sagittal - separates body into equal right and left halves
  • Transverse/horizontal - separates the body into superior and inferior parts
• Directional Terms

  • inferior (below)
  • medial (middle)
  • lateral (side)
  • posterior (back)
  • superior (top or above)
  • anterior (front)
• Positions

  • Recumbent - lying down
  • Supine - lying on back
  • Prone - lying face down
  • Trendelenburg - head tilted down
  • Fowler - head higher than feet
  • Sims - LAO
  • Lithotomy - supine, knees flexed, abduct hips
  • Lateral - sagittal plane parallel with IR
  • Oblique - coronal plane not parallel with IR
  • Decubitus - pt lying down, beam is horizontal
• Breathing instructions

  Given to patients to prevent a blurry imaage
• Frontal /coronal -separates the body into anterior and posterior parts• Mid-sagittal-separates body into equal right and left halves• Transverse/horizontal -separates the body into superior and inferior parts
• Position in which the x ray is horizontal, debiticus