What energy level does Technetium-99m (Tc-99m) emit?

What energy level does Technetium-99m (Tc-99m) emit?

• A. 140 keV
• B. 159 keV
• C. 93 keV
• D. 511 keV

Answer: (A)

Technetium-99m (Tc-99m) is a widely used radionuclide in nuclear medicine due to its favorable physical properties. It is known for emitting gamma rays at a primary energy level of 140 keV. This specific energy level is ideal for imaging applications because it strikes a balance between adequate penetration through body tissues and sufficient detection efficiency. The 140 keV gamma rays can be easily detected by gamma cameras, making this radionuclide highly effective for various diagnostic imaging procedures and reducing patient radiation exposure compared to higher energy emissions. The choice of this energy level is integral to its efficacy in nuclear medicine diagnostics.

Technetium-99m (Tc-99m) is a widely used radionuclide in nuclear medicine due to its favorable physical properties. It is known for emitting gamma rays at a primary energy level of 140 keV. This specific energy level is ideal for imaging applications because it strikes a balance between adequate penetration through body tissues and sufficient detection efficiency. The 140 keV gamma rays can be easily detected by gamma cameras, making this radionuclide highly effective for various diagnostic imaging procedures and reducing patient radiation exposure compared to higher energy emissions. The choice of this energy level is integral to its efficacy in nuclear medicine diagnostics.