Diagnostic & Interventional Radiology Procedures Flashcards

Which imaging modality uses ionizing radiation to create cross-sectional images of the body?

Answer: CT Scan

A CT (Computed Tomography) scan uses X-rays (ionizing radiation) from multiple angles to create detailed cross-sectional images of organs, bones, soft tissues, and blood vessels. Unlike MRI or ultrasound, CT scans rely on radiation to generate these images. This makes ionizing radiation a key characteristic of this imaging modality.

What is the purpose of fluoroscopy in interventional radiology?

Answer: To provide real-time imaging

Fluoroscopy is an imaging technique that uses X-rays to obtain real-time moving images of the internal structures of a patient. In interventional radiology, it is invaluable for guiding procedures such as catheter placements, biopsies, and stent insertions. It allows the radiologist to visualize instruments and anatomy in motion, ensuring precision and safety.

Which of the following procedures involves inserting a catheter to open blocked arteries?

Answer: Angioplasty

Angioplasty is a minimally invasive procedure specifically designed to open narrowed or blocked blood vessels, often arteries, using a balloon-tipped catheter. This process helps restore blood flow, making it a key interventional radiology procedure for conditions like atherosclerosis. It directly addresses blocked arteries, unlike the other listed procedures.

Which imaging technique is best suited for soft tissue contrast without ionizing radiation?

Answer: MRI

Magnetic Resonance Imaging (MRI) uses strong magnetic fields and radio waves to generate detailed images of organs and soft tissues. Unlike X-rays or CT scans, MRI does not use ionizing radiation and provides superior contrast for soft tissues, making it ideal for visualizing structures like the brain, spinal cord, and joints. Ultrasound also avoids radiation but typically offers less detailed soft tissue contrast than MRI.

Which procedure involves injecting contrast into the spinal canal to visualize the spinal cord?

Answer: Myelography

Myelography is an imaging procedure that involves injecting a contrast agent directly into the subarachnoid space of the spinal canal. This allows for clear visualization of the spinal cord, nerve roots, and surrounding structures, helping to diagnose conditions affecting the spinal column. The contrast highlights abnormalities that might not be visible on standard X-rays.

What is the role of coding in interventional radiology?

Answer: To ensure reimbursement & compliance

In interventional radiology, accurate coding translates the complex procedures performed into standardized codes for billing and data tracking. This is crucial for ensuring that healthcare providers receive appropriate reimbursement for their services from insurance payers. Furthermore, correct coding ensures compliance with federal and state regulations, preventing fraud and abuse.