RAD- ABDOMENCT Flashcards
What is the MC procedure for ABD patho?
CT
If Mr. KFC has abdominal pain with recatal bleeds, which contrast is ideal to differntiate bowel from other abdomen issues?
PO contrast- Cons- takes HRs, NON EMergent. Look for hyperattenuation in bowel, stomach
How can you tell if there is IV contrast?
Look at aorta an vessesl near verterbal body
What are cues to look for in CT of abdomen?
- Contrast or NON (enhanced) 2. Fat stranding 3. Fluid collection 4. Level of slice, use anatoamy 5. Creatine- NO PREGS. 6. Locate Aorta- size, califications, bifurcation, lumen contrast
How long is CT of ABdomen
Base of LUNGS- FEMUR Heads
What is only organ to cross midline?
Pancreas- RETROPERITINEAL
What can be confusing w/ contrast vs. non?
Calification in organs will by hyperattenuation: pancreas, aorta, kidney
For SBO or LBO, what preferred IV or PO contrast?
IV CON
For diverticulitis, what preferred IV or PO contrast?
IV CON, +/- ORAL
For IBD or Toxic megacolon what preferred IV or PO contrast?
Emergent- IV, NON emergent- PO
For colon tumor in colon, what preferred IV or PO contrast?
Colonoscopy- CT w/ PO and IV
What is most sensitve for site of SBO and cause?
CT 1. Dilated, Air- fluid bowel, Thick bowel walls.
What is seen in stomach on CT?
Air
With a LBO what is DX on CT?
1.Feces 2. Haustra 3. Dilated, large 4. SB collapsed
What condition has lareg sigmoid colon seen at kidney level slice, Air- fillied out pouching, with NO FAT STRANDING>
Diverticulosis
What is seen as inflamation around organs in CT?
FAT STRANDING- mid density, strands, near inflammed organ
Mr. KFC CT shows sigmoid full of local hypoattenuated strands, thick edematous sigmoid wall
Diverticulitis
This DDX may cause this on a CT? IBD, Ischemic Bowel, Intusseption, Diverticulitis?
TARGET sign- edema, fat, air, water contrast formed
WHat is tricky about DX appedciits?
GREAT pretender- Classic sign- n/v, acute, McBurney pain-diffuse to local. BUT 10% have this. Appedix can be in many locations.
What is order of procedure for PT if Appendix is suspected?
- Children US 1st 2. Adult- CT IV CON ONLY 3. THin Adults, PREG- US
What are DX findings for Appendix on CT and US
CT- edema, fat stranding, >6mm dilated, appendolith. US- non compressible, >6mm dilated, peri appendical fluid
WHihc is worse with Hernias? Stranguated vs Incarerated?
Incareated- unble to reduce Stranulate- ischemia-ER
What causes pancreatisis?
ETOH, gallstones, Rx, Drugs, Virues.
What are indicative finding on CT for pancreatiits?
Fluid, Fat stranding, unable to see pancreaas
WHat is sign of AAA vs Disection>
- AAA-no hyperattenuation. >3mm 2. Dissection-split Lumen w/ contrast then a clot hypoattenuation
What is best test to DX pneumoperitouem?
CT- double wall sign-clearly see both sides of bowel wall, and Falciform ligament-pulling from liver and wall
Can you see aire around gallbladder cause by infection gas producing Bacteria on US?
NO. CT for emphysematuos cholecysisits
How do you located fluid/ascites in ABdomen?
- look near spleen and liver. Both should be close to ABD wall 2. RAdiologist determine if blood
If asked by preceptor, if you want CON or non CON for kideny stone,what should you say?
CT best for renal/ureter NON CONTRAST. BUT, i learned changes, so based off HOSP
WHat is best for REnal stones?
CT best for hyrdoureter, polycstic kidney, Renal CA, Renal Trauma
Mrs. Bracy is 13wk pregnant, which US is needed?
Formal US via trainer HCP. Bladder full for transabdominal. <10wk intravagianl bladder empty
In order to see ovary, ectopics pathology, which is best?
Transvaginal, hard to see
Pregnant women CANNOT get?
CT!!!!. GEt UPT b4
What can be seen in longiitudinal and transverse views w/ US on females?
LONG-1. Low frequency curvilnear: bladder, uterus, cervix. TRANS- bladder uterus
Where is the endometrial strip?
Line belwo uterus. TRANS- closer to tranducer head. LONG- central below uterus
How early can gestatin be seen on US?
5-7wks
Durning ED female visit what is important to note on US?
IUP, Size match dates, heartmotion
WHat is seen on transvaginal early US? 4-5wks
Sac visible- anechoic hole, souround by Double dedicual sac
WHat is seen on transvaginal early US? 5-6wks
Gestational sac +yolk sac.
WHat is seen on transvaginal early US? 6-8wks
Gestational sac +yolk sac, + fetal pole
WHat is seen on transvaginal early US? 7-9wks
Fetal pole + cardiac anatomy
Why doesnt visual early IUP NOT gurantee ectopic?
Twins, multple pregnacy. Heterotrophic pregnancy/ EctopicPT- syncope, UPT, transvaginal
12 weeks what can be measured?
HR 130-160
Pt is at 7-13 wks what measurement should be taken?
Crown to rump
Pt is at 13 wks what measurement should be taken?
Bipartietal diameter+CRL
Pt is at 14 wks what measurement should be taken?
Femur length + BD+CRL
Pt is at >14 wks what measurement should be taken?
ABdominal circumference- Late. FL+AC= age monitors growth
As a student or non formal US tech, should we give gender?
NO, very variabl. GIRLS 3 line sign- vaginal folds
What is progression of PID and can be seen on CT?
Tubo ovarian absecc.
