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Procedures lll
Large Intestine BE
Question | Answer |
---|---|
where does the large intestine begin | the right iliac region, where it joins the ileum of the small intestine |
what are the 4 main parts of the large intestine | cecum colon rectum anal canal |
how long is the large intestine | approx 5' |
what is the main function of the large intestine | reabsorption of fluids and eliminate waste products |
which part of the large intestine is pouch like | cecum |
what is the approx length and width of the cecum | 2. 1/2 " long 2"in diameter |
the appendix is also know as | vermiform appendix |
what is attached to the end of the cecum | vermiform appendix |
what are the divisions of the colon | ascending, transverse, descending and sigmoid portion |
where is the ileocecal valve located | just below the junction of the asending colon and the cecum it guards the opening b/t the ileum and the cecum |
what is the radiograph of the large intestine also called | BE-barium enama BaE and lower GI |
what connects the ascending and the descending colon | right colic flexure(or haptic) left colic flexure(oe splenic) |
what is volvulus | twisting |
what is intussusception | telescoping of the bowels |
what can be best visualized with double contrast barium enema | visualization of the mucous lining colitis diverticulosis/diverticulitis neoplasms |
what would be 2 contraindications for a BE | possible perforated hollow viscus possible large bowel obstruction |
what is the time frame for dietary restriction for a BE | NPO 24 or 12 hrs before |
what should be done to the enema bag prior to tip insertion | shake it to prevent separation from barium sulfate from water |
true or false retention ballon tip should only be inflated under fluoroscopic control | true |
true or false Barium can be administered by anyone | false |
what are the technical considerations for single contrast study | 100-110kvp 110 is standard |
what are the technical considerations for double contrast study | 90kvp is standard |
what are the technical considerations for iodinated contrast media | 80-90kvp 80 is standard |
what should the water temp be for contrast media mixing | room temp 85-90ºF |
What is the CR for Barium Enema PA or AP | perpendicular to the IR at the level of iliac crest |
What is the SS for Barium Enema PA or AP | large intestine, including left coli flexure transverse colon filled with barium (if double you will see the air too) |
how many images do most adult require for Barium Enema PA or AP | 2 if the left colic is to be included |
What is the CR for Barium Enema LPO RPO (AP) | perpendicular to IR at 1" lateral to midline of the body at THE ELEVATED SIDE, at the level of crest (upside opens) |
What is the SS for Barium Enema LPO (AP) | right colic flexure and ascending and recto-signmoid portions upside opens |
What is the SS for Barium Enema RPO (AP) | left colic flexure and descending portions should appear open up side opens on an AP |
What is the pt rotation for Barium Enema LPO / RPO (AP) | 35-45º |
What is the CR for Barium Enema RAO/LAO (PA) | perpendicular IR at 1" lateral to midline of the body at THE ELEVATED SIDE, at the level of crest (down side open) |
What is the pt rotation for Barium Enema RAO/LAO (PA) | 35-45º |
what is the SS for Barium Enema RAO (PA) | right coli flexure, ascending portion and sigmoid portion downside opens |
for Barium Enema /LAO (PA) | left colic flexure and the descending colon downside opens |
what is the CR for the PA axial BE | centered to the IR and entering 30-40ºcaudal (down) and sexting at the level of ASIS and MSP |
what is the SS for the PA axial BE | recto-sigmoid colon |
what is the SS for the AP axial BE | recto-sigmoid colon |
what is the CR for the AP axial BE | directed 30-40º CEPHALD (up) entering 2" inferior to the ASIS |
what is the CR for the right/left decubitus PA/AP projections BE | horizontal and perpendicular to IR entering to the level of Iliac crest |
what is the SS for the right/left decubitus PA/AP projections BE | Up side is air filled just include the entire colon Air side must not be over penetrated |
what is the CR for the left lateral projections BE | perpendicular to the IR entering the midcoronal plane at the level os ASIS |
what is the SS for the left lateral projections BE | rectum and distal sigmoid |
where is the PT centered for the left lateral BE projection | center midcoronal plane to IR |
PA post evacuation BE SS | large intestine with residual amount of contrast |
PA post evacuation BE CR | perpendicular at the level of crest |
PA post evacuation BE is done with the emema tip _______ and most contrast _______ | out drained |
Which two structures of the large intestine are demonstrated primarily with the PA oblique projection, LAO position? | Left colic flexure and descending colon |
To which level of the patient should the IR be centered for the PA oblique projection, LAO position? | Iliac crests |
Which portions of the large intestine are of prime interest with the lateral projection | Sigmoid and rectum |
TRUE OR FALSE The entire colon should be demonstrated for the AP projection. | TRUE |
The AP oblique projection, LPO position, produces an image similar to the ____________ projection (____________ position). | PA oblique projection RAO position |
Large intestine: For the AP oblique projection, LPO position, which side of the patient (right or left) should be elevated away from the x-ray table? | RIGHT |
Which flexure (right colic or left colic) should be well demonstrated with the AP oblique projection, LPO position? | Right colic flexure |
How many degrees should the patient be rotated from the supine position for the AP oblique projection, RPO position? | 35 to 45 |
Which flexure (right colic or left colic) should be well demonstrated with the AP oblique projection, LPO position? | Right colic flexure |
where does the esophagus start | c6 |