Lumbar Exam Flashcards
what are the structures demonstrated on an AP lumbosacral view
T12-mid sacrum
where do you measure for an AP lumbosacral view
at the thickest part of the abdomen or at the level of the umbilicus
what is the film size for an AP lumbosacral view
14x17
what is the SID/FFD for an AP lumbosacral view
40”
what is the central ray angle for an AP lumbosacral view
none
what is the central ray for an AP lumbosacral view
horizontal 11/2” below the top of the iliac crest (2 fingers below)
vertical through the midline of the body (use xiphoid process as a landmark)
what is the pt position for an AP lumbopelvic
- upright standing, back lightly touching bucky
- feet comfortably apart
- true AP without rotation or tilt
what is the pt management for an AP lumbosacral
use filter or shield
what is the collimation for an AP lumbosacral view
length T12-ASIS
width ASIS and both SI joints
9x16
what are the breathing instructions for an AP lumbosacral
suspended expiration
what are the structures demonstrated for a lateral lumbar
T12-mid sacrum
where do you measure for a lateral lumbar
at the level of ASIS
always measure from behind the pt
what is the film size for a LL
14x17
what is the SID/FFD
40”
what is the pt position for a LL
- upright, standing left lateral
- feet comfortably apart
- true lateral without rotation or tilt (lateral flexion)
what is the pt position for a LL
put arms in a position that moves them out of the field of interest
what is the central ray angle for a LL
none
what is the central ray for an LL
horizontal 11/2” above the top of the iliac crest
vertical at the top of the iliac position so that the spine is in the center of the film
what is the collimation for an LL
length T12-1/2 between ASIS and greater trochanters
width ASIS to PSIS
10x16
what are the breathing instructions for a LL
suspended expiration
what are the structures demonstrated on an L5/S1 lateral spot shot
L5-S1 joint space
good projection to rule out spondylolisthesis
where do you measure for an L5/S1 lateral spot shot
place hand on iliac crest and roll down
what is the film size for an L5/S1 lateral spot shot
8x10
what is the SID/FFD for a L5/S1 lateral spot shot
40”
what is the central ray angle for an L5/S1 lateral spot shot
none
what is the central ray for a L5/S1 lateral spot shot
vertical-halfway between the ASIS and PSIS
or look to the lateral lumbar projection to be exact
horizontal-1 inch below the iliac crest
what is the pt position for an L5/S1 lateral lumbar
upright
lateral position, feet comfortably apart
what is the collimation for a L5/S1 lateral spot shot
6x8
what are the breathing instructions for a L5/S1 lateral spot shot
suspended expiration
