Tiny Patients, Big Clues
This is the characteristic ultrasound finding for intussusception
What is "target" or "donut" sign
This artifact appears as multiple, equally spaced echoes behind a strong reflector.
What is reverberation.
what liver condition may show a nodular surface and coarse echotexture.
What is cirrhosis?
This causes echogenic foci with clean shadowing and possible twinkle artifact.
What is renal calculi
This vessel is evaluated first in a liver transplant Doppler exam because thrombosis can be rapidly life‑threatening
What is the hepatic artery?
This fontanelle is most commonly used as an acoustic window for neonatal brain ultrasound to image the cerebellum.
What is the mastoid fontanelle
Increasing this transducer property improves axial resolution but decreases penetration.
What is frequency?
what vessel enlarges first in portal hypertension?
What is portal vein
These retroperitoneal gland sits superior to each kidney and is often triangular or crescent‑shaped on ultrasound.
What are adrenal glands
This fluid collection, common early after transplant, is typically anechoic and located near the surgical site
What is a lymphocele?
A brain injury in premature infants affecting white matter that can be seen by ultrasound.
PVL or periventricular leukomalacia
The assumed speed of sound in soft tissue is this.
What is 1540 meters per second?
What US finding is most specific for cholecystitis?
Postive sonographic murphy sign
This common benign renal mass is typically hyperechoic and well‑circumscribed.
What is an angiomyolipoma
This waveform measurement, often elevated in rejection or obstruction, is calculated as (PSV–EDV)/PSV
What is the resistive index?
This normal pediatric kidney feature can mimic scarring but resolves with age.
What is fetal lobulation
This crystal property allows conversion of electrical energy into sound waves.
What is piezoelectric effect?
This organ’s head sits nestled in the C‑loop of the duodenum.
What is the pancreas?
This classic sign of torsion shows a twisted spermatic cord
What is the whirlpool sign?
This artery, branching from the splenic artery, is a key inflow vessel assessed in pancreas graft Doppler
What is the superior mesenteric artery?
This is the most common cause of neonatal cholestasis which can be seen on ultrasound with triangular cord sign.
What is biliary atresia
This tissue causes the least attenuation of ultrasound waves.
What is fluid?
What pancreatic pathology is associated with the "double duct sign"?
Pancreastic head carcinoma (simulateous dilitation of cbd and main panc duct )
This branch of the aorta is used as a landmark to divide the proximal and mid‑aorta
What is the celiac artery?
This type of renal transplant—identified on ultrasound by two small kidneys sharing a single graft capsule and dual sets of vessels—is typically used when very young donor organs are implanted together into an adult recipient
What is a pediatric en bloc transplant?