mid term review

  1. anechoic or sonolucent
    • (opposite of echogenic) without internal echoes; the structure is fluid-filled and transmits sound easily
    • ex: vascular structures, destened urinary bladder, gb, and amniotic cavity
  2. echogenic or hyperechoic
    • (opposite of anechoic) echoproducing structure; reflects sound with a brighter intensity
    • ex: gallstone, renal calyx, bone, fat, fessures and ligaments
  3. enhancement, increased through-transmission
    sound that travels through an anechoic (fluid filled) substance and is not attinuated; there is increased brightness diectly beyond the posterior border of the anechoic structure as compared with the surrounding area
  4. fluid-filled level
    • interface between two fluids with different acoustic characteristics; this level will change with patient postition;
    • ex: dermoid with fluid level
  5. heterogeneous
    • not uniform in texture or composition
    • ex: many tumors have characteristics of both decreased and increased echogenicity
  6. homogeneous
    • (opposite of heterogeneous) completely uniform in texture or composition
    • ex: the texture of the liver, thyroid, testes and myometrium
  7. hypoechoic
    • low level echoes within a structure
    • ex: lymph nodes and gastrointestinal tract
  8. infiltrating
    usually refers to a diffuse disease process or metastatic disease
  9. irregular borders
    • borders are not well defined, are ill defined, or are not present
    • ex: abscess, thrombus and metastases
  10. isoechoic
    • very close to the normal parenchyma echogenicity pattern
    • ex: metasatic disease
  11. loculated mass
    well defined borders with internal echoes; the septa may be thin (likely bening) or thick (likely malignant)
  12. shadowing
    the sound beam is attenuated by a solid or calcified object; this reflection or absorption may be partial or complere; are bubbles in the duadenum may cause a "dirty shadow" to occur seconday to reflection; a stone would cause a sharp shadow posterior to its borders
  13. role of sonographer
    to demonstrate a specific behavior involving the tasks or duties obligated to perform (perform u/s studies and gather diagnostic data under the direct or indirect supervision of a physician)
  14. gallstones sono view
    hyperechoic intraluminal echoes with posterior acoustic shadowing
  15. what structure appears homogeneous
    • liver
    • spleen
  16. most common tumor to fill IVC
    renal carcinoma
  17. most common b9 tumor of liver
    cavernous hemangiona
  18. other b9 tumor in the liver 2 most common
    focal nodular hyperplasia
  19. what disease process fatty liver infiltrate
    b9 process
  20. Image Upload 2
    • fusiform aneurysm (1&2)
    • saccular aneurysm (3)
  21. Image Upload 4
    • hepatic cyst in left lobe of liver
    • increased through transmission and well defined borders
  22. Image Upload 6
    long image of slpenic vein shown as a cicular stucture just anterior to the celiac axis.....(ct)celiac trunk, splenic artery, splenic vein, sma, aorta
  23. Image Upload 8
    • long image of hepatic vein draining the liver to the IVC
    • think walled hepatic vein compared with the thicker wall of portal vein
  24. Image Upload 10
    transverse image of the splenic vein as it leaves the splenic hilum
  25. hepatocellular disease
    a common liver malignancy related to cirrhosis. the carcinoma may present as a solitary massive tumor, multiple nodules throughtout the liver or diffuse infiltrative masses in the liver, HCC can be invasive
  26. a thrombosis of hepatic vein is called
    budd-chiari syndrome
Card Set
mid term review
vocab ch 1 v1