SysArc Infomatix Interview Questions and Answers

Before performing any procedure with contrast in CT scan and MRI, we first check the patient's medical history and any allergies to contrast agents.

• Check the patient's medical history for any previous reactions to contrast agents

• Ask the patient about any known allergies, especially to iodine or shellfish

• Perform a pre-procedure assessment to ensure the patient is suitable for contrast administration

• Verify renal function to determine if the patient can safely receive contrast

• Co...read more

T1w and T2w images are types of magnetic resonance imaging (MRI) scans that provide different information about the body's tissues.

• T1w images show the distribution of fat and water in the body, providing good anatomical detail.

• T2w images highlight fluid-filled structures and soft tissues, making them useful for detecting abnormalities like edema or inflammation.

• T1w images are typically brighter for fat and darker for water, while T2w images are brighter for water and darker f...read more

STIR and FLAIR are pulse sequences used in MRI imaging with different contrast mechanisms.

• STIR (Short Tau Inversion Recovery) is a T1-weighted sequence that suppresses fat signal and enhances pathology.

• FLAIR (Fluid Attenuated Inversion Recovery) is a T2-weighted sequence that suppresses fluid signal and enhances lesions.

• STIR is useful for detecting bone marrow edema, infection, and tumors, while FLAIR is effective in visualizing multiple sclerosis lesions and brain tumors.

• STI...read more

CT scan and MRI are both medical imaging techniques, but they differ in terms of the technology used and the types of images produced.

• CT scan uses X-rays to create detailed cross-sectional images of the body, while MRI uses strong magnetic fields and radio waves.

• CT scan is better for visualizing bone and dense tissues, while MRI is better for soft tissues like the brain, muscles, and organs.

• CT scan is faster and more widely available, while MRI provides more detailed and high...read more

X-rays use radiation to create images of bones and tissues, while CT scans use a combination of X-rays and computer technology to create detailed cross-sectional images of the body.

• X-rays use a single beam of radiation to create a 2D image, while CT scans use multiple X-ray beams and a rotating scanner to create a 3D image.

• X-rays are commonly used to detect fractures, lung infections, and dental problems, while CT scans are used to diagnose conditions like tumors, blood clots...read more

Contrast is given in T1W images to enhance the visualization of certain structures and abnormalities.

• Contrast agents help differentiate between normal and abnormal tissues.

• They improve the visibility of blood vessels, tumors, and inflammation.

• Contrast agents contain paramagnetic or superparamagnetic substances.

• Gadolinium-based contrast agents are commonly used in T1W imaging.

• Contrast administration can be intravenous, oral, or rectal depending on the area of interest.

No, it is generally not recommended to perform a CT scan on a pregnant woman.

• CT scans use ionizing radiation which can potentially harm the developing fetus.

• Alternative imaging techniques like ultrasound or MRI are preferred for pregnant women.

• However, in certain emergency situations where the benefits outweigh the risks, a CT scan may be performed with appropriate precautions.

• The decision to perform a CT scan on a pregnant woman should be made by a radiologist or a healthcar...read more

There are four generations in CT scan technology.

• The first generation of CT scanners used a single X-ray source and detector.

• The second generation introduced a rotating X-ray tube and multiple detectors.

• The third generation utilized a stationary X-ray tube and a rotating detector array.

• The fourth generation, also known as spiral or helical CT, introduced continuous rotation and a slip-ring technology.