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Alu 101 - Diagnostic Tests Exam Updated Questions And Correct Answers

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ALU 101 - Diagnostic tests Exam UPDATED QUESTIONS AND CORRECT ANSWERS Involve the puncture or cutting of the skin or entry into an orifice - CORRECT ANSWER Invasive test Test that takes multiple 2-D x-rays to give 3-D images - CORRECT ANSWER Scan (tomo) What is hounsfield unit? - CORRECT ANSWER CT Quantifies absorption levels of different tissues. Water being 0 units. (CT Scan) Ultrasound utilizes high-frequency sound waves. Name the techniques used. - CORRECT ANSWER A-mode, B-mode, M-mode, grayscale, real-time, doppler What are the advantages of ultrasounds? - CORRECT ANSWER Differentiate solid from fluid filled structures ; lower cost ; portability ; accessibility ; no radiation What are the he limitations of ultrasounds? - CORRECT ANSWER Low resolution ; relies on skill of technician ; noise produced if soundwaves hit bones or gas

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ALU 101 - Diagnostic tests Exam
UPDATED QUESTIONS AND CORRECT
ANSWERS
Involve the puncture or cutting of the skin or entry into an orifice - CORRECT
ANSWER Invasive test



Test that takes multiple 2-D x-rays to give 3-D images - CORRECT ANSWER CT-
Scan (tomo)



What is hounsfield unit? - CORRECT ANSWER Quantifies absorption levels of
different tissues. Water being 0 units. (CT Scan)


Ultrasound utilizes high-frequency sound waves. Name the techniques used. - CORRECT
ANSWER A-mode, B-mode, M-mode, grayscale, real-time, doppler



What are the advantages of ultrasounds? - CORRECT ANSWER Differentiate solid
from fluid filled structures ; lower cost ; portability ; accessibility ; no radiation



What are the he limitations of ultrasounds? - CORRECT ANSWER Low resolution ;
relies on skill of technician ; noise produced if soundwaves hit bones or gas



What is the difference between hypoechoic and hyperechoic tissues? - CORRECT
ANSWER Hypoechoic reflects few sound waves ex: fluids ; Hyperechoic reflects large
number of sounwaves ex: fat



Name the most common contrast agents - CORRECT ANSWER Barium, Iodine,
Gadolinium


What is the gold standard test to diagnose multiple sclerosis? - CORRECT
ANSWER MRI

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