Biophysique MRI Clinical Case Preparation (Dr. Nhim Sovanvatey, Pharm.D.)

Biophysique MRI Clinical Case Preparation (Dr. Nhim Sovanvatey, Pharm.D)

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1) A 60-year-old female with a history of severe headaches and dizziness is referred for an MRI to rule out any intracranial pathology. During the pre-MRI screening, it is discovered that she has a pacemaker implanted.

2. Which of the following is a contraindication for performing an MRI in this clinical case?

a. The patient has a pacemaker implanted

b. The patient is claustrophobic

c. The patient is over 60 years old

d. The patient has a history of dizziness

e. The patient has a history of severe headaches

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2) A 55-year-old male with a history of chronic kidney disease presents with worsening lower back pain. The physician considers ordering an MRI to evaluate the cause of the pain.

4. Which of the following is a disadvantage of using MRI in this clinical case?

a. MRI is non-invasive and does not use ionizing radiation

b. MRI is safe for patients with chronic kidney disease without any concerns

c. MRI is the most cost-effective imaging modality for all patients

d. MRI can be time-consuming and may require the patient to remain still for long periods

e. MRI provides excellent soft tissue contrast, which is useful for visualizing spinal structures

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3) A 65-year-old female with a history of breast cancer presents with new onset of back pain. The physician considers ordering an MRI to evaluate for possible metastasis.

5. Which of the following is a disadvantage of using MRI in this clinical case, particularly related to cost?

a. MRI is more expensive compared to other imaging modalities like CT scans

b. MRI provides excellent soft tissue contrast, which is useful for detecting metastasis

c. MRI can be performed quickly and is widely available

d. MRI is safe for patients with metal implants

e. MRI is non-invasive and does not use ionizing radiation

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4) A 40-year-old male presents with persistent knee pain following a sports injury. The physician orders an MRI to assess the extent of the damage to the soft tissues and cartilage.

6. Which of the following components of the MRI machine is primarily responsible for generating the magnetic field used in this clinical case?

a. Radiofrequency coils B. Gradient coils

b. Computer system

c. Main magnet

d. Gradient coils

e. Patient table

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5) A 35-year-old female presents with sudden onset of severe headaches, visual disturbances, and nausea. The physician suspects a possible brain tumor and considers ordering an MRI.

3. Which of the following is an indication for performing an MRI in this clinical case?

a. The patient is pregnant

b. The patient has a history of claustrophobia

c. The patient has sudden onset of severe headaches and visual disturbances

d. The patient has a history of mild headaches

e. The patient has a pacemaker implanted

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6) A 45-year-old male presents with persistent lower back pain radiating to his left leg. The pain has not improved with conservative treatments such as physical therapy and medication. The physician suspects a herniated disc and orders an MRI to confirm the diagnosis.

1. Which of the following is an advantage of using MRI in this clinical case?

a. MRI is the first-line imaging modality for all types of back pain

b. MRI is less expensive and more widely available than other imaging modalities.

c. MRI uses ionizing radiation, which provides better imaging of bone structures.

d. MRI provides excellent soft tissue contrast, which is useful for visualizing herniated discs.

e. MRI scans are quick and do not require the patient to remain still for long periods.

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និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត