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Merrills Ribs

Sternum, ribs, sc joints by merrills

The bony thorax is formed by what parts of the thoracic cavity? Sternum, 12 Ribs, and 12 thoracic vertebrae
What are the spaces in between each rib called? Intercostal space
Which joint of the rib articulates with the vertebra? Costovertebral Joint
What part of the rib articulates with the Transverse Process of the Thoracic vertebrae? Tubercle
How are the anterior ends of the ribs situated in comparasion to the posterior ends? 3 to 5 inches lower
Which body habitus will the diaphragm be at the highest level in the body? Hyperstenic
Which projections are essential to demonstrate the sternum? Oblique, lateral
How much should the body be rotated for a PA Oblique projection of the sternum? 15 to 20 degrees
What breathing instructions are preferred for an oblique sternum? Breathing technique
On trauma patients, which position is preferred for imaging the oblique sternum? AP LPO
What is the preferred SID for an oblique projection of the sternum? 30 inches
Which projection of the sternum utilizes the heart shadow? PA RAO
How much above the jugular notch should the IR be positioned for the oblique and lateral sternum? 1 1/2 inches
The respiratory movement of the diaphragm averages how many inches between deep inspiration and deep expiration? 1 1/2 inches
How many ribs are considered to be true ribs? 7
How many ribs are considered to be false ribs? 5
What are the last two ribs called? floating ribs
Which body habitus is the diaphragm at the lowest position in the body? Hypostenic
The 12 costovertebral joints of the ribs are considered what type? Synovial-Gliding
Which ribs are attached directly to the sternum? 1-7
How is the 8th through the 10th rib attached? By the costal cartilage of the 7th rib
Name the typical parts of a rib. Head,neck,body,and tubercle
What structures are on the head of the ribs for articulation with the vertebrae? Facet
Which ribs attach directly to the sternum? 1-7
What are the 3 main parts of the sternum? Manubrium, body, xiphoid process
What is the name of the indentation on the manubrium called? Jugular notch
What is the average length of the sternum as a whole? 6 inches
Which ribs are considered to be false ribs? 8-12
What is the name of the joints that are the only points of articulation in the upper limbs and the trunk? Sternoclavicular joints(SC)
What is the SID for a lateral sternum? 72 inches
What is the degree of obliquity for PA SC joints? 10-15 degrees
Which SC joint is better visualized on an oblique projection? The SC joint closest to the IR
Where is the CR directed for SC joints? T3
How should the patients head be positioned for a PA SC joint x-ray? Rest head on chin, midsagittal plane should be vertical
Where should the CR be directed for an oblique SC joint? At the level of T2-T3(3in distal to the Vertebral Prominens),and 1 to 2 in lateral from MSP
How should the arms be placed for an upright lateral sternum? Hands locked behind the back
What are the breathing instructions for the lateral sternum? Ssuspend respiration upon deep inspiration
In which position does the diaphragm descend to its lowest level? The upright position
Which position is best to visualize the upper ribs? Upright, seated or standing
How are the patients hands positioned on upright ribs? Hands against the hips with palms faced outwards
What are the breathing instructions for the upper ribs? Suspend at full inspiration
Where is the CR directed for upper anterior ribs? At the level of T7
How much light should be above the shoulders for upper ribs, if the positioning is correct? Approximately 1 1/2 in above the shoulders(jugular notch)
What is the SID for any projection of ribs? 40 inches
Where should the CR be directed for an AP projection of the ribs? T7(3-4 in below jugular notch)
What are the breathing instructions for the lower ribs? Suspend respiration upon expiration
Why should the patient suspend respiration upon expiration for lower ribs? Elevate the diaphragm to visualize the lower ribs more clearly
How many degrees is the patient rotated for an oblique rib xray? 45 degrees
What PA projection is the same as an AP LPO? PA RAO
Where should the film be positioned for AP or PA lower ribs? The bottom of the film at the top of the Iliac Crest
Where should the arm of affected side of the ribs be positioned? Raise the arm enough to get the scapula away from the ribs
What position shows the left ribs cleared of the heart and its shadow? LAO or RPO
If the affected side of the ribs are away from the film, what position is the patient in? PA Oblique,RAO or LAO
If the affected side of the ribs are towards the film, what position is the patient in? AP Oblique, LPO or RPO
Where should the CR be directed for the AP or Oblique projections of the ribs? Mid way between the spine and the lateral margin of the thorax
In what projection can the axillary portion of the ribs best be seen? Oblique
Created by: radgirl37