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ALU Latest Exam Questions And 100% Correct Answers
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ALU 101 2024-2025 Latest Exam Questions And 100%Correct Answers
Hounsfield Units Answer How the absorption of different tissues is quantified
Fluoroscopy Answer allows physician to view moving parts of the body in real time-used
for arthroscopy, cardiac catheterization, stent placement
Fine Needle Aspirate (FNA) Answer obtains cells and or fluid for pathological dx
differentiates whether a cold nodule is benign/malignant
A-Mode, B-Mode, M-Mode & Grayscale Answer provides info on structural size, motion
or both
produces moving image of heart including valve motion and wall motion
Contrast Agents - Response allows better imaging for tubular/hollow structures
can be used w/ plain x-ray, CT & MRI studies
Doppler Ultrasonography - Response measures velocity & direction of blood flow within
heart and blood vessels
evaluates venous insufficiency, blood clots, arterial occlusion/stenosis, and identifies
valvular disorders
X-Rays - Answer a beam of radiation is emitted and scattered/absorbed by different
tissues, i.e. bone, fat, water, and air
Advantages of US over MRI/CT Scanning - Answer 1. differentiates solid from liquid
2. lesser cost
, 3. portability
4. accessibility
5. no exposure from ionizing radiation
Hyperechoic, Hypoechoic, Anechoic Tissues - Answer 1. large number of soundwaves
2. low number of soundwaves
3. no soundwaves (fluid)
Limitations to US - Answer 1. skill level of ultrasonographer
2. image resolution
3. "noise" produced by the incidence of ultrasound waves on gas & bone
Nuclear Medicine - Answer 1. use scintigraphy (gamma camera) to record radioactive
material in target orgain
2. image bone
3. evaluate thyroid and hepatobiliary function
3. useful in dx CAD and evaluation of cardiac physiology
Digital Radiography - Answer 1. X-ray modality
2. uses a low dosage of radiation
3. images can be digitally manipulated to enhance visualization by the radiologist
Computed Tomography (CT/CAT) - Answer 1. sees fat, air, soft tissue & bone
Oral/Instilled Contrast Agents w/ CT - Answer 1. useful for intracranial, neck, abdominal,
pelvic & lung images
2. detects pulmonary embolism, aortic aneurysm/dissection or acute hemorrhage
3. defines size, precise location & extent of tumor's involvement w/ surrounding tissue
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