Create an account
When using a 14- x 17-in (35- x 43-cm) IR for an AP projection of the lumbar spine, the CR is directed to:
When taking radiographs to evaluate fusion of the vertebrae, place the IR:
1 to 2 inches below the iliac crest
The zygapophyseal joints and midsagittal plane form an angle of:
30° for the lower vertebrae and 50° for the upper vertebrae
When the spine is unsupported for a lateral projection for L5-S1, the CR should be directed:
5° to 8° caudad
For an AP projection of the sacroiliac joints in the oblique position, the patient is rotated:
25° to 30°
Which topographic landmarks are used to direct the CR for an AP axial projection of the sacrum?
Anterior superior iliac spine, Symphysis pubis
For a lateral projection of the sacrum and coccyx, the CR is directed:
3 to 4 inches posterior to the ASIS
For a PA projection of the sternoclavicular joints, the CR is directed
3 inches (7 cm) inferior to the vertebra prominens
To demonstrate ribs above the diaphragm on a radiographic image
Use a low kV and Take the exposure in inspiration
For a PA projection for ribs above the diaphragm
Align the midsagittal plane perpendicular to the IR, Direct the CR to the level of T7, and Take the exposure on suspended inspiration
A radiographic image taken to demonstrate ribs below the diaphragm should include ribs numbered
8 through 12
The IR size and orientation for a radiograph of the sternum in the RAO position is
10 x 12 inches (24 x 30 cm) lengthwise
For a radiograph of the sternum in the RAO position, place a
Right side marker in the upper right corner of the IR
To demonstrate the sternum on a radiographic image using the RAO position, use
Low kV, A long exposure time, and A 40-inch (100-cm) SID
Which body habitus type would require the greatest degree of patient rotation for an RAO position to demonstrate the sternum
For a lateral projection of the sternum
Place the patient in an erect position and Draw the patient's arms posteriorly
For a radiograph of the sternum in the RAO position, the CR is directed halfway between the
Jugular notch and Xiphoid process
Palpable topographic sternal landmarks include the
Jugular notch, Sternal angle, and Xiphoid process
For a radiograph of the sternoclavicular joints in the recumbent oblique position
Rotate the patient 15° and Direct the CR to the level of T2-T3
For a radiograph of the sternum in the RAO position, the typical degree of patient rotation is
15° to 20°
the portion of the lumbar spine between inferior and superior articular processes is the
laminae or pars interarticularis
on properly positioned oblique lumbar spine, the pedicles or eyes should appear in the ______ aspect of the vertebral body
advantages of a PA lumbar include
prone position places spine more parallel and opens spaces between disks, lowers ovarian dose
What projections and position are used and why for a scoliosis series
PA projection to reduce dose,
Convex side of curvature placed toward IR on the lateral projection to reduce magnification
name of method that is required to assess scoliosis in which the patient is required to stand with one foot on a 3" block
Why is the RAO position for the sternum preferred to the LAO position
places sternum in heart shadow
A radiograph of an RAO sternum reveals that it is partially superimposed over the spine. What must be done to eliminate this problem during the repeat exposure
Increase patient rotation
A radiograph of a lateral projection of the sternum reveals that the patient's ribs are superimposed over the sternum. What is the error?
Rotation, not true lateral
why does breathing technique improve imaging of the sternum
lung & rib markings will become obscured allowing the sternum to remain sharp and defined
which images of the ribs are taken erect and which are taken recumbant and why
erect - for ribs 1-9 if there is pain and also diaphragm is at lowest position on full inspiration.
recumbant - for ribs 8-12 because diaphragm is at its highest position on expiration allowing structures to be visualized better thru abdominal structures.
Which AP/PA projection and OBL position should be taken for an injury to the right anterior upper ribs?
PA & LAO
Which AP/PA projection and OBL position should be taken for an injury to the left anterior upper ribs?
PA & RAO
Which AP/PA projection and OBL position should be taken for an injury to the right posterior upper ribs?
AP & RPO
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together