What imaging modality is best for visualizing soft tissues? A) X-ray B) MRI C) CT D) Ultrasound Which contrast agent is commonly used in CT scans? A) Barium B) Iodine C) Gadolinium D) Carbon dioxide What is the primary purpose of a radiologist? A) Interpret imaging studies B) Perform surgeries C) Administer medications D) Conduct … Read more
What is the most common radiologic feature of pneumonia? A) Ground-glass opacities B) Consolidation C) Pleural effusion D) Cavitation In which condition is the “air bronchogram” sign commonly seen? A) Pulmonary embolism B) Lobar pneumonia C) Tuberculosis D) Lung cancer Which imaging modality is the most sensitive for detecting fractures? A) Ultrasound B) CT scan … Read more
Which structure is located anterior to the trachea in the mediastinum? A) Esophagus B) Thymus gland C) Aorta D) Heart What is the primary landmark for locating the carina on a chest X-ray? A) T5-T6 intervertebral space B) T3-T4 intervertebral space C) T7-T8 intervertebral space D) T9-T10 intervertebral space Which of the following structures is … Read more
What is the primary use of technetium-99m in medical imaging? A) Single photon emission computed tomography (SPECT) B) Positron emission tomography (PET) C) Magnetic resonance imaging (MRI) D) X-ray imaging Which radioisotope is commonly used for thyroid imaging? A) Iodine-123 B) Carbon-14 C) Strontium-89 D) Fluorine-18 What type of radiation does gallium-67 emit? A) Beta … Read more
Which of the following imaging techniques uses ionizing radiation to create images of the body? A) Ultrasound B) X-ray C) MRI D) CT scan What is the primary purpose of a collimator in radiography? A) To increase radiation exposure B) To limit the area of exposure C) To enhance image resolution D) To reduce patient … Read more
What is the primary source of radiation used in conventional radiography? A) X-rays B) Gamma rays C) Alpha particles D) Beta particles What is the role of the radiographic film in image formation? A) To emit radiation B) To capture the X-ray image C) To amplify the radiation D) To filter the radiation Which of … Read more
What is radiobiology primarily concerned with? A) The study of radioactive materials B) The effects of radiation on living organisms C) The development of radiation therapies D) The physics of radiation Which type of radiation has the highest biological effectiveness? A) Gamma rays B) Alpha particles C) Beta particles D) X-rays What term describes the … Read more
What is the primary mechanism of radiation-induced tissue damage? A) Thermal damage B) DNA damage C) Chemical changes D) Cellular dehydration Which type of radiation is most effective at causing direct DNA damage? A) Alpha particles B) Gamma rays C) Beta particles D) X-rays What cellular structure is most susceptible to radiation damage? A) Mitochondria … Read more
What type of radiation consists of positively charged particles emitted from the nucleus? A) Beta radiation B) Alpha radiation C) Gamma radiation D) X-rays Which type of radiation is known for its ability to penetrate tissues deeply? A) Alpha radiation B) Gamma radiation C) Beta radiation D) Neutron radiation What is the primary characteristic of … Read more
What is the primary goal of radiation safety principles? A) To increase exposure levels B) To protect individuals from harmful radiation effects C) To enhance imaging quality D) To improve equipment efficiency Which principle involves minimizing the time spent near a radiation source? A) Distance B) Time C) Shielding D) Risk assessment What is the … Read more