Radiology Flashcards
What is first imaging modality for localized form at ovary?
Endometrioma
First image for highly suspicious renal stone
Ct abdo KUB noncontrast for male
Ultrasound for female if unsure if preg or not.
Where do stones like to get caught
UPJ, UVJ, and where ureter crosses iliac vessels
What % of people have radiolucent stones.
40%
Hiv -ovir treatment can get stones.
Gout
On those with known renal stones, what is another option, and to look for filling defect?
IVP
What is the modality of choice for preg woman?
What is twinkle artifAct?
Ultrasound. Can’t see very distally from kidney though.
MRI is another good one.
Twinkle artifact means stone.
What is best imaging for pyelonephritis.
Wedge shaped deck enhance striated areas on coronal. And
CT contrast
Renal abscess imaging?
ContrSt ct
Imaging on renal cancers?
Ct with or without contrast.
What is beta HCG number that SOMETHING should be seen in the uterus?
> 1500 (1500-2000)
What to start with in us opof genitogyne tract?
Start w transabdo…. See if you can see uterus, gestation. Orient, etc.
then Transvag us which is diagnostic of ectopic if outside uterus.
For ruptured ectopic, what pouch can look at distantly to assess for free fluids?
Morrison pouch
Ddx for T1 vag bleed?
Subchorionic hemorrhage…. Between amnion and uterus wall.
Small is 50%.
Fo,lowed by gyne to ensure it resolves.
Young woman w thyroid mass. First imaging modality?
Ultrasound. And order TSH!
Diff btwn iodine 123 and 131?
123 for diagnosis. (Some place Tc 99)
131 for TREATMENT ie ablation,
What would you want to biopsy a thyroid nodule for?
If it doesn’t look like a perfect little cyst.
If cold on diagnostic scanneed to go on to FNAB r/o malignancy
If no uptake, what to considere?
Serum thyroglobulin…. If inc the thyroiditis, if dec the thyrotoxicosis.
Where does RA back pain usually present?
Cervical spine
Ruq pain w fever, n and v. first line imaging?
Ultrasound as per ACR appropr criteria… Look for stones, bile duct obs.
Finding on acute cholecystitis
Thickened gb wall
Stone… 5% can be acalculous
Peri gb Edema.
Initial test for choledococystitis
US . If pos then proceed to ercp.
Check slide!!
For acute hepatitis what is the starry night on black sky background?
Check slide!
On us dec echogenitocy check slide!
What is the imaging algorithm for sbo?
Check slide!
How to locate transition point?
Slide
How to distinguish sbo vs lbo?
Slide
Distinguishing lbo vs sbo vs ileus.
Slide
Ileus air proportionately thru small bowel. Colon and into rectum.
What is important to distinguish in oldus?
Slide
Describe gallstone ileus
Slide
What is Riglers triad in gallstone ileus ct?
Bowel obstruction
Pneumobilia
Ectopic gallstone.
What is a distinction between pneumo ilia vs venous portal gas?
Pneumobilia is more central hepatic distribution.
Portal venous gas is more peripheral,.
Volvulus findings on abdominal film?
Slide
Coffee bean sign
Sigmoid volvulus
Kidney bean sign
Cecal volvulus
Approach to CHF
Vasculature –> interstitium –> alveoli –> beyond (pleural effusions)
What is fleischer sign on pe CXR?
Enlarged Pulm art.
Who gets vq scan?
Pregnant
What distinguishes chronic vs acute pe
Polo mint sign.
4 things listen to lecture at 1115.
Central,
On a supine film for a pneumothorax, what to look for?
Deep sulcus sign. On right.
Relieved by a chest tube.
Do the debakey and Stanford dissection categorizations count if traumatic?
NO!!! because it is trauma will want to do surfi all exploration.
What are pneumatocoeles?
Slide
For undiffd chest pain, initial imaging?
Or not classic for acs, no clinical marker, etc. do CXR
In the unstable of w acs, what is the go to imaging?
Ct for pts with low or intermediate probability of cad,
Coronary CT angiography. High NPV.
When is CXR used in acs
Stable, rule out other conditions, secondary signs to mi.
Approach to rib # imaging?
Traditionally had been CXR, rO tsn pneumo, hemothorax, flail chest, etc.
Cr now preferred for polytrauma
More readily detect spine and cv injuries
Better detection of lung parenchyma.
