Biology ยท Physics

Diagnostic Imaging

1,100 Questions

Diagnostic imaging involves various techniques used to look inside the human body for diagnosis and treatment. This covers technologies like computed tomography, ultrasound, and magnetic resonance imaging. These questions often appear in general science and general awareness examinations.

Medical imaging technologiesRadiation therapyDiagnostic proceduresNon-destructive testing

Diagnostic Imaging Questions

Multiple choice

Which of the following is NOT a common indication for surgical gastroscopy?

  1. Evaluation of abdominal pain

  2. Screening for stomach cancer

  3. Treatment of gastroesophageal reflux disease (GERD)

  4. Removal of foreign objects from the stomach
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Surgical gastroscopy is primarily used for diagnostic and therapeutic purposes related to the stomach. Treatment of gastroesophageal reflux disease (GERD) is typically managed through medications or lifestyle modifications, rather than surgical intervention.

Multiple choice

Which of the following is a type of neuroimaging technique that uses magnetic fields to create images of the brain?

  1. Magnetic resonance imaging (MRI)

  2. Computed tomography (CT)

  3. Positron emission tomography (PET)

  4. Single-photon emission computed tomography (SPECT)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Magnetic resonance imaging (MRI) is a type of neuroimaging technique that uses magnetic fields to create images of the brain. It is used to diagnose a variety of neurological disorders, including stroke, tumors, and multiple sclerosis.

Multiple choice

How is cervical dysplasia diagnosed?

  1. Pap smear

  2. Colposcopy

  3. Biopsy

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cervical dysplasia is diagnosed through a combination of tests, including a Pap smear, colposcopy, and biopsy. A Pap smear is a test that collects cells from the cervix to look for abnormal cells. A colposcopy is a procedure in which a doctor uses a magnifying instrument to examine the cervix and vagina. A biopsy is a procedure in which a small piece of tissue is removed from the cervix and examined under a microscope.

Multiple choice

How is cervical dysplasia treated?

  1. Surgery

  2. Radiation therapy

  3. Chemotherapy

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The treatment for cervical dysplasia depends on the severity of the condition. In most cases, surgery is the primary treatment for cervical dysplasia. Surgery may involve removing the abnormal cells from the cervix or removing the entire cervix. In some cases, radiation therapy or chemotherapy may also be used.

Multiple choice

What is the treatment for CIN 2 and CIN 3?

  1. Surgery

  2. Radiation therapy

  3. Chemotherapy

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The treatment for CIN 2 and CIN 3, also known as moderate and severe cervical dysplasia, is usually surgery. Surgery may involve removing the abnormal cells from the cervix or removing the entire cervix. In some cases, radiation therapy or chemotherapy may also be used.

Multiple choice

What is the recommended follow-up care for women with cervical dysplasia?

  1. Regular Pap smears

  2. Colposcopy

  3. Biopsy

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The recommended follow-up care for women with cervical dysplasia is regular Pap smears. Pap smears can help detect any recurrence of cervical dysplasia or the development of cervical cancer.

Multiple choice

Which electromagnetic wave is used in medical imaging techniques like X-rays and CT scans?

  1. Infrared waves

  2. Ultraviolet waves

  3. X-rays

  4. Radio waves
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

X-rays are electromagnetic waves with a wavelength range of 0.01 to 10 nanometers, commonly used in medical imaging due to their ability to penetrate tissues and reveal internal structures.

Multiple choice

Which of the following is NOT a common application of acousto-optics in imaging and sensing?

  1. Laser Doppler Velocimetry (LDV)

  2. Acousto-Optic Imaging (AOI)

  3. Optical Coherence Tomography (OCT)

  4. Ultrasound Imaging
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ultrasound imaging is not a common application of acousto-optics in imaging and sensing. The other options, laser Doppler velocimetry (LDV), acousto-optic imaging (AOI), and optical coherence tomography (OCT), are widely used applications of acousto-optics in this field.

Multiple choice

Which of the following is a recommended screening test for young adults?

  1. Mammogram

  2. Pap smear

  3. Colonoscopy

  4. Cholesterol screening
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cholesterol screening is recommended for young adults with certain risk factors, such as a family history of high cholesterol or heart disease.

Multiple choice

Which rendering technique is commonly used for visualizing the external surfaces of organs and tissues in medical imaging?

  1. Volume Rendering

  2. Surface Rendering

  3. Image-Based Rendering

  4. Ray Tracing
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Surface rendering is a technique for creating realistic 3D models of organs and tissues by extracting their surfaces from medical images.

Multiple choice

What is the primary physical principle utilized in medical ultrasound imaging?

  1. X-ray radiation

  2. Magnetic resonance

  3. Acoustic waves

  4. Radioactive isotopes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Medical ultrasound imaging employs high-frequency acoustic waves to generate images of internal body structures.

Multiple choice

Which of the following is NOT a common type of medical ultrasound imaging modality?

  1. A-mode

  2. B-mode

  3. C-mode

  4. M-mode
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

C-mode is not a commonly used ultrasound imaging modality. A-mode, B-mode, and M-mode are more prevalent.

Multiple choice

What is the primary advantage of ultrasound imaging over X-ray imaging in medical diagnostics?

  1. Lower cost

  2. Higher resolution

  3. Real-time imaging capability

  4. Reduced radiation exposure
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ultrasound imaging does not involve ionizing radiation, making it safer for patients and healthcare professionals.

Multiple choice

Which of the following is NOT a common application of medical ultrasound imaging?

  1. Prenatal imaging

  2. Cardiac imaging

  3. Gastrointestinal imaging

  4. Bone density measurement
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bone density measurement is typically performed using X-ray or dual-energy X-ray absorptiometry (DXA), not ultrasound.

Multiple choice

What is the term used to describe the graphical representation of blood flow velocity obtained using Doppler ultrasound?

  1. Doppler spectrum

  2. Doppler waveform

  3. Doppler image

  4. Doppler map
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Doppler spectrum is a graphical representation of the distribution of blood flow velocities within a sample volume.