Echogenic - Study guides, Class notes & Summaries

Abdomen ARDMS _ MOCK exam 2023, Verified Solution Progression of which of the following abnormalities flattens the portal veins? Biliary obstruction The wall thickness in a normal fasting gallbladder should not exceed 3 mm This color Doppler sonogram is most likely demonstrating which of the following abnormalities? Pseudoaneurysm This color Doppler image demonstrates turbulent swirling blood flow within a fluid collection, classic sonographic findings of a common femoral artery pseud...

a patient presents for an anatomy scan of a 20wk gestation. she states that she has a history or a prior pregnancy with an atrioventricular septal defect. what is the best way to evaluate this fetus? a. trans view of the fetal head with the beam perpendicular to the parietal bones b. coronal view of chest c. trans view of the fetal chest at the level of the 4 ch heart - c. trans view of the chest at the level of the 4ch heart which of the following is a failure of fusion defect of the uter...

Schistosomiasis CORRECT ANSWER -One of the most common parasitic infections in humans & major cause of portal hypertension in endemic areas - eggs react liver via portal vn inciting granulomatous resulting in peri portal fibrosis -U/S: occluded intrahepatic portal vn, thickening and increased echogenicity of portal Acute Hepatitis CORRECT ANSWER -this form of hepatitis is known as "starry night" -hypoechoic enlarged liver -can cause elevated ALT,AST, conjugated and unconjugated biliru...

Which of the following conditions requires immediate communication of the results to the radiologist? A. placental abruption and gastroschisis B. renal agenesis and ompahlocele C. premature rupture of membranes and placental abruption D. renal agenesis, premature rupture of membranes, and placental abruption - C Fetal lung volumetry performed with 3D sonography should be used to help diagnose: A. skeletal dysplasia B. fetal asphyxia C. fetal respiratory failure D. diaphragmatic hernia -...

Definition of Duty Factor? - ️️The percentage of time the pulse is on -Unitless (just a number) -For continuous wave, duty factor = 100% -For pulsed wave, Duty Factor is less than 1% What are the two types of Ultrasound Waves? - ️️1.) Electromagnetic - Wave travels through a vacuum. 2.) Mechanical - Wave must travel through a medium. Meaning of Anechoic? - ️️Dark, less echos. Meaning of Echogenic? - ️️Full of echoes. Meaning of Hyperechoic? - ️️More echoes than adjac...

A tumor that consists of tissue from all three germ cell layers A. Pheochromocytoma B. Hamartoma C. Adrenal reat tumor D. Teratoma answer is: - D. Teratoma A tumor that is of similar echo-texture to normal liver tissue is discovered in the liver of an asymptomatic patient. What is the echogenicity of the tumor? A. Echogenic B. Hypoechoic C Isoechoic D. Hypodense answer is: - C. Isoechoic A type of reverberation artifact caused by several small, highly reflective interfaces, such as ma...

Meaning of Anechoic? - Dark, less echos. Meaning of Echogenic? - Full of echoes. Meaning of Hyperechoic? - More echoes than adjacent tissue. Meaning of Hypoechoic? - Less Echoes than adjacent tissue. Meaning of Isoechoic? - Similar/same echoes than adjacent tissue. Meaning of Homogenous? - Uniform Texture. (smooth) Meaning of Heterogenous? - Different levels of echogenicity. Definition of Wavelength? - The length of one cycle. -Denoted by (Lamda)

Artifact -Answer An echo feature present or absent in a sonographic image that does not correspond to the presence or absence of a real structure. Eg. enhancement or shadowing. Attenuation -Answer The reduction of intensity (and amplitude) of a sound wave as it travels through a material. Attenuation is due to absorption, reflection, and scattering. Complex -Answer A structure in the body that contains both cystic and solid components. Echogenic -Answer A structure or medium that p...

the normal AP ddimension of the aorta lumen should not exceed - 3 cm the celiac trunk is the first _____ branch of the aorta - anterior the celiac trifurcates into...? - the common hepatic artery the left gastric artery the splenic artery the gastroduodenal artery is a branch of the...? - the common hepatic artery this artery branches off the anterior aspect of the aorta and travels vertically anterior and parallel to the aorta - the superior mesenteric artery which renal artery...

Left lobe of the liver is divided into medial and lateral segments by what? - correct answer Left hepatic vein Left lobe of the liver is separated from the caudate lobe by what? - correct answer ligamentum venosum Right lobe of the liver is divided into anterior and posterior segments by what? - correct answer Right hepatic vein Main lobar fissure - correct answer The main lobar fissure separates the right and left lobes of the liver. It is visualized sonographically as an echo...