FAQ

목록검색조건

  • [Body Composition Test] What is the difference betweena CT scan and MRI?

  • ▶ MRI is diagnostic equipment that produces a magnetic field and radiofrequency that stimulate hydrogen (water) which is abundant in our body to obtain an image. It precisely produces images of soft tissues that are high in hydrogen atoms, such as brain, blood vessels, and cartilage. It particularly produces accurate imaging of the brain, spine, and musculoskeletal system.
    CT is diagnostic equipment that uses x-ray and computers to produce tomographic and three-dimensional images.
    CT is more precise than MRI for lungs and heart. Although there is radiation exposure, there is no need to worry since the latest CT equipment is made with technology that reduces radiation dose.

  • [Body Composition Test] What is the difference betweenbrain MRI and brain MRA?

  • ▶ MRI is used for diagnosis in various areas of the body and MRA is a test to examine the condition of the cerebral vessels.
    Brain MRI is performed for abnormal findings in the structure and function of the brain such as dementia and brain tumors. Brain MRA creates imaging of specifically the blood vessels to examine any abnormality in the cerebral vessels such as aneurysm, vascular malformation, and vessel shape.

  • [Body Composition Test] What are dense breasts?

  • ▶ It means the parenchyma is very dense.
    The adipose tissue shows as black and the parenchyma as white on the mammogram. Dense breasts have less adipose tissues and more parenchyma and the overall image is white.
    Breast cancer occurs from parenchyma and performing a breast ultrasound with a mammogram is recommended for dense breasts as it has less sensitivity to mammograms.
    About half of the female examinees have dense breasts which are common in Korea.

  • [Body Composition Test] Can I just receive breast ultrasound?

  • ▶ The accuracy of diagnosis for performing only the breast ultrasound is 70–85% and is difficult to find early breast cancer.
    Mammography is a basic test for detecting asymptomatic early breast cancer and is the best test to detect microcalcifications as a sign of early breast cancers which are not easy to diagnose with the ultrasound.
    It is best to receive both mammography and breast ultrasound.

  • [Body Composition Test] What is low-dose chest CT scan?

  • ▶ Low-dose chest CT scan is an imaging technique that reduces radiation exposure compared to the general CT scan.
    The low-dose chest CT scan produces excellent image quality with about 1/5 to 1/10 of the radiation exposure of the general CT scan.
    For the early diagnosis of lung cancer, small nodules that are less than 1 cm must be found.
    It is difficult to find small nodules less than 1 cm with chest x-rays as well as nodules in areas covered by the heart, large blood vessels, and bones.
    A low-dose chest CT scan can find small nodules from 3 to 5 mm, and even nodules in areas covered by the heart, large blood vessels, and bones.

  • [Stress Test] What is body composition?

  • ▶ Body composition refers to the components of the body. Core components are divided into four categories: body water, protein, minerals, and fat.

  • [Stress Test] What are the precautions for the body composition test?

  • ▶ The body composition test is affected by the amount of body water. For accuracy, it is best to use the restroom 2 hours after your meal before the test.
    In addition, as strenuous exercise or intense movements can temporarily change the body composition, the test should be performed before exercises.
    The body water can flow to the lower body the longer you stand and it is best to test in the morning. The electric current does not pass through stockings and should be removed for the test.

  • [Stress Test] What is the body water measurement in the body composition test?

  • ▶ Body water is the measurement of the fluid in the body. Our weight is made up of 50–70% of water which is distributed in all cells and body fluid. It plays a key role in transporting nutrients and waste and maintaining the body temperature.

  • [Oral Examination] Are there any precautions for the stress test?

  • ▶ During the test, do not move or speak. Do not get too tense nor take slow breaths, and remain as usual.
    Do not fall asleep during the test and do not drink coffee, smoke, or take drugs 3 hours before the test.
    Do not drink alcohol before the test and do not take the test immediately after eating.

  • [Oral Examination] What is occupational stress?

  • ▶ Occupational stress can be defined as hazardous mental and emotional reactions when occupation conditions do not align with the worker’s capabilities, resources or needs.
    The factors of occupational stress are as follows.
    (1) Time pressure, work schedule, and speed
    Work demands, overtime, work shifts, machine speed, and salaries spending on whether the worker can control the work pace
    (2) Work structure
    Time pressure or lack of control such as meeting deadlines, and underutilization of skills
    (3) Physical environment
    Uncomfortable environment, physical or toxicological risk factors, and ergonomic risk factors
    (4) Organization
    Conflicting roles, competition, and ambiguous roles such as unclear work requirements, lack of job prospects, and unclear scope of responsibilities
    (5) Stressors outside the organization
    Requirements on the community, job insecurity, and career due to work-related situations that go beyond the individual work and organizational level
    (6) Non-occupational stressors
    The environment of the individual, family, and community due to stressors not related to work