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Radiology Converters

About Radiology Converters

Radiology is the medical science that uses imaging techniques to diagnose and treat diseases inside the body.

Radiology allows doctors to see inside the body without surgery using different types of imaging.

Common Imaging Methods Used in Radiology:

  • X-rays – used to see bones and chest structures
  • CT (Computed Tomography) scans – detailed cross-section images
  • MRI (Magnetic Resonance Imaging) – detailed images using magnetic fields
  • Ultrasound – uses sound waves (no radiation)
  • Nuclear medicine – uses small amounts of radioactive material

Types of Radiology:

  • Diagnostic Radiology – Identifies diseases using imaging.
  • Interventional Radiology – Uses imaging to guide minimally invasive treatments.

We aim to help you save time and avoid calculation errors with tools you can trust, anytime and on any device.

Frequently Asked Questions — Radiology Converters

Question: What radiation units can I convert?

Answer: Radiology Converters cover absorbed dose (Gray, rad, milligray), dose equivalent (Sievert, rem, millisievert), radiation activity (Becquerel, Curie, millicurie), and radiation exposure (Roentgen, Coulomb/kg) — all the units used in medical physics, radiology, and radiation safety.

Question: How do I convert Gray to rad?

Answer: 1 Gray (Gy) = 100 rad. To convert Gray to rad, multiply by 100. For example, 0.5 Gy = 50 rad. To convert rad to Gray, divide by 100: 1 rad = 0.01 Gy.

Question: What is the difference between Sievert and Gray?

Answer: Gray (Gy) measures absorbed radiation dose — the energy deposited per kilogram of tissue (1 Gy = 1 J/kg), regardless of radiation type. Sievert (Sv) measures effective dose — Gray weighted by a radiation quality factor (Q) that reflects biological impact. For X-rays and gamma rays, 1 Gy = 1 Sv.

Question: How do I convert Becquerel to Curie?

Answer: 1 Curie (Ci) = 3.7 × 10¹⁰ Becquerel (Bq). To convert Curie to Becquerel, multiply by 37,000,000,000. To convert Becquerel to Curie, divide by 3.7 × 10¹⁰. Becquerel is the SI unit; Curie is the older, traditional unit.

Question: What is radiation exposure measured in?

Answer: Radiation exposure is measured in Roentgen (R) in the traditional system, or Coulombs per kilogram (C/kg) in SI units. 1 R = 2.58 × 10⁻⁴ C/kg. Exposure specifically refers to the ionization of air by X-ray or gamma radiation.