Which of the following is not an effective way to apply the ALARA principle in a dental office?

Which of the following is not an effective way to apply the ALARA principle in a dental office?

• A. Use of fast image receptors
• B. Use of lead apron and thyroid collar
• C. Use of proper beam collimation
• D. Use of D film

Answer: (D)

ALARA in dental radiology means keeping radiation doses as low as reasonably achievable while still obtaining a diagnostic-quality image. Using a fast image receptor lowers the exposure needed to produce a clear image, which directly reduces the patient’s dose. Shielding with a lead apron and thyroid collar provides protection to radiosensitive tissues during exposure. Proper beam collimation narrows the x-ray field to the area of interest, decreasing the amount of tissue irradiated and reducing scatter, which lowers overall dose. D film, being slower than faster film speeds, typically requires higher exposure to achieve the same image quality, making it less aligned with ALARA. So, using D film is not an effective way to apply the ALARA principle.

ALARA in dental radiology means keeping radiation doses as low as reasonably achievable while still obtaining a diagnostic-quality image. Using a fast image receptor lowers the exposure needed to produce a clear image, which directly reduces the patient’s dose. Shielding with a lead apron and thyroid collar provides protection to radiosensitive tissues during exposure. Proper beam collimation narrows the x-ray field to the area of interest, decreasing the amount of tissue irradiated and reducing scatter, which lowers overall dose. D film, being slower than faster film speeds, typically requires higher exposure to achieve the same image quality, making it less aligned with ALARA. So, using D film is not an effective way to apply the ALARA principle.