Abdomen Flashcards
Flat Plate Abdomen/ KUB projections/ views
- AP Supine
- AP Upright
- AP/ PA Upright Substitute (Left Lt decub if pt too ill to stand)
Demo size and shape of liver, spleen, kidneys, and intra abdominal calcification and masses
Flat Plate Abdomen/ KUB AP Supine
Flat Plate Abdomen/ KUB is only done in — unless required by certain indications
supine
Flat Plate Abdomen/ KUB AP Supine cxt and crd
14x17- longit- BD- Perp- MSP- iliac crest
Respiration suspended at end of expiration so that abdominal organs are not compressed
Flat Plate Abdomen/ KUB AP Supine and Uprght
Demo visceroptosis and air-fluid levels
Flat Plate Abdomen/ KUB AP Upright
Flat Plate Abdomen/ KUB AP Upright CXT and CRD
14x17- longit- BD
(H)- MSP at 2” (5cm) above iliac crest
Use marker arrow in H RP
Flat Plate Abdomen/ KUB AP Upright
H RP requires ensured inclusion of the diaphragm but if bladder is to be included, center IR at iliac crest
Flat Plate Abdomen/ KUB AP Upright
If pt is too tall to include entire pelvic area, a 2nd radiography to in include bladder on a 10x12 CW IR is needed
Flat Plate Abdomen/ KUB AP Upright
10x12- CW- MLL- 2-3” (5-7cm) above upper border of SP
Flat Plate Abdomen/ KUB AP Upright if pt is too tall
When kidneys are nor of primary interest, consider (1) Proj as it greatly reduced pt (2) dose
- Upright PA
- gonadal
Why should upright PA Proj be considered when kidneys are not of primary interest during flat plate abdomen/ KUB?
Kidneys are posteriorly positioned and there is higher radiation dose upon entry. Thus, when xray enters from posterior, there is lower gonadal dose because of the attenuation effect
Used when pt is too ill to dtand to demo air-fluid levels
Flat Plate Abdomen/ KUB AP/ PA Upright Substitute (L Lat Decub)
Have pt lie on side for several minutes before exposure to allow air to rsie to its highest level within the abdomen
Flat Plate Abdomen/ KUB AP/ PA Upright Substitute (L Lat Decub)
14x17 vertically transverse on the surf of the RT (to follow LA of abdomen)
Flat Plate Abdomen/ KUB AP/ PA Upright Substitute (L Lat Decub)
Adjust height of CXT w grid so that the MLL or IR is centered to MSP and MTL at iliac crest/ 2” above iliac crest
Flat Plate Abdomen/ KUB AP/ PA Upright Substitute (L Lat Decub)
R Lat decub can be made if pt cannot lie on L side
Flat Plate Abdomen/ KUB AP/ PA Upright Substitute (L Lat Decub)
Why is left lat decub recommended during Flat Plate Abdomen/ KUB AP/ PA Upright?
To ensure that free air rises and stands out clearly against the liver (solid mass), detecting air-fluid levels.
If pt lie on their right, rising air might overlap with the air-filled intestines (splenic flexure of LI)
Done if pt is due for emergency operation
Acute Abdomen Series/ Three-way series
Acute Abdomen Series/ Three-way series Indication
To rule out free air and infections
Acute Abdomen Series/ Three-way series Proj/Views
- AP w supine
- AP w upright or L lat decub
- PA chest
Used to detect free air that may accumulate under the diaphragm
Acute Abdomen Series/ Three-way series PA Chest
Also used for cardiopulmonary clearance
Acute Abdomen Series/ Three-way series PA Chest
Acute Abdomen Series vs Abdominal Sequencing
Acute Abdomen (three way) Series: RT is stationary and pt is moving (positioned AP supine, upright, and PA chest)
Abdominal sequencing: RTable moves along w the pt
Demo small amount of intra peritoneal gas in acute abdominal cases
Abdominal sequencing
Abdominal sequencing
(1) recommended that pt be kept in L lat posn on a stretcher for (2) mins before abdominal radiography are obtained. This posn allow (3) into the area under the R hemidiaphragm, where the image will not be superimposed by the gastric gas bubbe
- Miller
- 10-20
- gas to rise
Abdominal suqeuncing
If larger amounts of free air are present, many Radiology dept may suggest that the pt lie on the side for a minimum of (1) before teh radiography is produced
- 5 mins
Abdominal suqeuncing
Smaller amount of air= (1) time the pt is in L lat in order to (2)
- longer
- give chance to all the air to rise from the side not dep on RT
Abdominal suqeuncing
3 Pt/ Structure positioning
- AP/ PA of chest and upper abdomen (L lat decub) (Chest expo etchnique)
- AP/ PA of chest and abdomen (L lat decub, pt being moved onto a H’lly placed table- tilt table and pt to upright posn)
- RT back to H posn for Supine AP/PA of abdomen