What is the primary source of X-rays in an X-ray tube? A) Filament B) Tungsten target C) Cathode D) Anode What type of radiation is generated when high-energy electrons collide with the target material in an X-ray tube? A) Alpha radiation B) Beta radiation C) X-ray radiation D) Gamma radiation What component of the X-ray … Read more
What is the primary purpose of an X-ray examination? A) To visualize soft tissues B) To visualize bones and dense structures C) To assess blood flow D) To measure metabolic activity What type of radiation is used in X-ray imaging? A) Alpha radiation B) Beta radiation C) Ionizing radiation D) Non-ionizing radiation What does the … Read more
What is the most common cause of vascular abnormalities in adults? A) Genetic disorders B) Atherosclerosis C) Congenital malformations D) Trauma Which imaging modality is commonly used to evaluate vascular abnormalities? A) MRI B) Ultrasound C) CT scan D) X-ray What is a common vascular abnormality characterized by an abnormal dilation of a blood vessel? … Read more
What is the primary purpose of iodine-based contrast agents in medical imaging? A) To reduce patient anxiety B) To enhance the visibility of internal structures C) To provide sedation D) To replace X-rays Which imaging modality commonly uses iodine-based contrast agents? A) MRI B) CT scans C) Ultrasound D) X-ray What is the main risk … Read more
What is the primary principle behind ultrasound imaging? A) Reflection of sound waves B) Absorption of X-rays C) Transmission of light D) Magnetic resonance Which frequency range is typically used for diagnostic ultrasound? A) 1-2 kHz B) 2-18 MHz C) 20-50 kHz D) 30-100 MHz What is the main advantage of using high-frequency ultrasound? A) … Read more
What is the primary purpose of using contrast agents in medical imaging? A) To reduce radiation exposure B) To enhance the visibility of structures or fluids C) To provide pain relief D) To facilitate surgery Which of the following is a commonly used iodinated contrast agent? A) Barium sulfate B) Iohexol C) Gadolinium D) Carbon … Read more
What is the primary purpose of placing a stent? A) To perform surgery B) To keep a blood vessel open C) To increase blood flow D) To enhance tissue healing Which type of stent is designed to expand after placement? A) Balloon-expandable stent B) Self-expanding stent C) Drug-eluting stent D) Covered stent What imaging technique … Read more
What is the primary purpose of shielding in radiation protection? A) To enhance radiation B) To reduce exposure to radiation C) To detect radiation D) To increase radiation dose Which material is commonly used as a radiation shield for gamma rays? A) Aluminum B) Lead C) Plastic D) Wood What is the main factor affecting … Read more
What is the primary goal of rapid diagnostic tests? A) To confirm chronic conditions B) To provide quick results for immediate clinical decisions C) To replace laboratory tests D) To assess long-term prognosis Which rapid diagnostic test is commonly used for COVID-19 detection? A) PCR test B) Rapid antigen test C) Serological test D) Chest … Read more
What is the primary purpose of radiopharmaceuticals in medicine? A) Diagnosis and treatment of diseases B) Pain relief C) Surgical procedures D) Immunization Which of the following is a commonly used radiopharmaceutical for thyroid imaging? A) Technetium-99m B) Iodine-123 C) Fluorine-18 D) Gallium-67 What does the term “half-life” refer to in radiopharmaceuticals? A) Time taken … Read more