Calebomolo01

One reason why focused beams with low intensities are less likely to cause bioeffects is that a focused beam is less efficient in heating a large mass of tissue to a critical temperature. correct answerTrue Typically, the sonographer can adjust the compression function of a receiver. correct answerTrue Mean frequency is calculated from weighted sum of frequencies in the power spectrum. correct answerTrue Refraction always occurs at the interface between two media when the propagation...

What type of wave is sound? Correct Ans ~ mechanical and longitudinal The frequency ranges for ultrasound are: Correct Ans ~ >20 kHz The speed of sound in soft tissue is: Correct Ans ~ 1540 m/s which of the following transducers fires the elements in groups? A. Linear sequenced array B. Phased array C. Continuous-wave transducer D. Single-element transducer Correct Ans ~ A Enhancement is caused by** Correct Ans ~ weakly attenuating structures wavele...

Which of the following describes the difference between side lobes and grating lobes? Correct Ans ~ Grating lobes are seen with arrays and side lobes are seen with single element probes Color Doppler is evaluated with what type of phantom? Correct Ans ~ Fluid filled phantom If the ultrasound image is too black and white, which of the following will add more levels gray to the image? Correct Ans ~ Decrease rejection levels If you obtain a peak velocity of 60 cm/s with the ...

A sound wave is correct answermechanical, longitudinal A compression area of a sound wave is correct answerhigh pressure, high density A rarefaction area of a sound wave is correct answerlow pressure, low density Which is considered an acoustic variable correct answerpressure Which is a unit for pressure correct answerN/m2 Which is a unit for density correct answerlbs/cm3 Which wave propagates in a medium correct answersound The range for ultrasound is correct answergreater ...

Which artifact is illustrated by this image? correct answera) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? correct answera) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? correct answera) Deny performance of the exam until a written request is received b) Seek approval from supervisor c) Verbally repeat the...

The congenital cardiac anaomaly seen most frequently in adults is: A. Ebstein's anomaly B. Bicuspid aortic valve C. Ventricular septal defect D. Endocardial cushion defect Correct Answer: B. Bicuspid aortic valve Which endocardiographic window is used in the detection and assessment of the inferior vena cava? A. apical B. subcostal C. parasternal D. suprsternal Correct Answer: B. Subcostal What is the number and location of the papillary muscles of a normal mitral valve? ...

C - Answer What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A - Answer to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed B - Answer which imaging mode requires a broadband transducer? A.continuous wave doppler B.Pulsed wave doppler ...

C - Answer What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A - Answer to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed B - Answer which imaging mode requires a broadband transducer? A.continuous wave doppler B.Pulsed wave doppler ...

Rhombencephalon - Answer The primitive hindbrain can be seen as a cystic structure with in the embryonic head? Decidua Basalis - Answer The maternal side of the developing placenta is referred to as the? 1 mm/day - Answer Up to 10 weeks gestational age, the mean diameter of the normal gestational sac should grow? 12 weeks CRL measures > 45mm - Answer Physicologic hernation of fetal intestines outside the abdomen should not be seen after what gestational age? 7 mm - Answer The bas...

Which artifact is illustrated by this image? - Answer a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? - Answer a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? - Answer a) Deny performance of the exam until a written request is received b) Seek approval from supervisor c) Verbally repeat the request back t...

what is secreted by developing follicles? - Answer estrogen what is secreted by the corpus luteum? - Answer progesterone what stimulates the growth and development of ovarian follicles? - Answer Follicle stimulating hormone Name the cells within the follicles that produce estrogen, which stimulates endometrial growth. - Answer theca cells Stimulates maturation of follicle and is responsible for Graafian follicular rupture causing ovulation. - Answer luteinizing hormone (LH) stimul...

What type of thyroid carcinoma is most lethal? A) medullary B) anaplastic C) papillary D) follicular - Answer B) anaplastic Adrenal hemorrhage is most commonly seen in ________________________. A) adults over 70yrs B) juvenile patients with chromosomal defects C) adults over 50yrs D) newborns - Answer D) newborns A right renal mass will displace the IVC: A) laterally B) medially C) superiorly D) inferiorly - Answer B) medially A patient presents with an acute onset of left s...

What's the first major arterial branch of the aorta is the? - Correct answer-Innominate artery or brachiocephalic artery The vertebral artery usually arises from the: - Correct answer-Subclavian Artery The incidence of new strokes per year is: - Correct answer-from 500,000 to 700,000 The abbreviation TIA stands for: - Correct answer-Transient Ischemic Attack A TIA of the right anterior hemisphere of the brain will likely affect: - Correct answer-The left side of the body - affects the sid...

What's the first major arterial branch of the aorta is the? - Correct answer-Innominate artery or brachiocephalic artery The vertebral artery usually arises from the: - Correct answer-Subclavian Artery The incidence of new strokes per year is: - Correct answer-from 500,000 to 700,000 The abbreviation TIA stands for: - Correct answer-Transient Ischemic Attack A TIA of the right anterior hemisphere of the brain will likely affect: - Correct answer-The left side of the body - affects the sid...

The first major arterial branch of the aorta is the: - Correct answer-Innominate artery Which of the following arteries does NOT arise from the subclavian artery? a. Vertebral b. Superior thyroid c. Internal thoracic d. Thyrocervical trunk (axis) e. Internal mammary - Correct answer-b. Superior thyroid The angular artery is the terminal part of the: - Correct answer-Facial artery The arterial pulsations felt in front of the ear and just above the zygomatic arch are from which artery? - ...

The cells that secrete epinephrine and norepinephrine - ANSWER chromaffin cells what is exudate ascites associated with - ANSWER cancer what is transudate ascites associated with - ANSWER cirrhosis what does a high white blood cell count indicate - ANSWER infection what does a decrease in hematocrit indicate - ANSWER bleeding transitional cell carcinoma is commonly found in all of the following locations except: - ANSWER liver

Progression of which of the following abnormalities flattens the portal veins? - ANSWER Biliary obstruction The wall thickness in a normal fasting gallbladder should not exceed - ANSWER 3 mm This color Doppler sonogram is most likely demonstrating which of the following abnormalities? - ANSWER Pseudoaneurysm This color Doppler image demonstrates turbulent swirling blood flow within a fluid collection, classic sonographic findings of a common femoral artery pseudoaneurysm. A patient pres...

1. the normal AP ddimension of the aorta lumen should not exceed(Answer) 3 cm 2. the celiac trunk is the first branch of the aorta(Answer) anterior 3. the celiac trifurcates into...?(Answer) the common hepatic artery the left gastric artery the splenic artery 4. the gastroduodenal artery is a branch of the...?(Answer) the common hepatic artery 5. this artery branches off the anterior aspect of the aorta and travels verti- cally anterior and parallel to the aorta(Answer) the superior mesente...

Progression of which of the following abnormalities flattens the portal veins? Correct Answer: Biliary obstruction The wall thickness in a normal fasting gallbladder should not exceed Correct Answer: 3 mm This color Doppler sonogram is most likely demonstrating which of the following abnormalities? Correct Answer: Pseudoaneurysm This color Doppler image demonstrates turbulent swirling blood flow within a fluid collection, classic sonographic findings of a common femoral artery pseudo...

1 1. 3 causes of venous thrombosis also called, Virchow's Triad(Answer) Venous stasis, trauma/endothelial damage, hypercoagulability 2. Venous stasis(Answer) Slowed blood flow in veins. Caused by immobility, myocardial infarction, CHF, hypotension, COPD, obesity, pregnancy, previous DVT, extrinsic compression, SVC syndrome, paraplegia, surgery associated conditions. 3. 2 types of Trauma/endothelial damage(Answer) Intrinsic and extrinsic 4. Intrinsic trauma is(Answer) Damage to the ves...