Mean exposure of radiation from OPG is:
**Core Concept**
The mean exposure of radiation from an Orthopantomogram (OPG) is a crucial aspect of radiology, particularly in the context of patient safety and radiation protection. OPGs are a type of dental radiograph used to visualize the teeth, jaw, and surrounding bone structures. However, they involve exposure to ionizing radiation, which can have adverse effects on human health.
**Why the Correct Answer is Right**
The mean exposure of radiation from an OPG is typically in the range of 10-30 μSv, which is relatively low compared to other medical imaging modalities. This is because OPGs use a single exposure to capture a wide area of the dental arch, whereas other imaging modalities like CT scans involve multiple exposures and higher doses of radiation. The low exposure is due to the use of a digital sensor and modern X-ray technology, which reduces the amount of radiation needed to produce a diagnostic image.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely incorrect because it does not provide a specific value or range for the mean exposure of radiation from an OPG. Without a specific value, it is difficult to determine its accuracy.
* **Option B:** This option may be incorrect because it does not align with the typical values of radiation exposure from an OPG. A value of 100 μSv or higher is likely too high for a single OPG exposure.
* **Option C:** This option may be incorrect because it does not provide a specific value or range for the mean exposure of radiation from an OPG. Without a specific value, it is difficult to determine its accuracy.
**Clinical Pearl / High-Yield Fact**
It is essential for dental professionals to minimize radiation exposure to patients while maintaining diagnostic image quality. This can be achieved by using digital sensors, modern X-ray technology, and adhering to established radiation safety guidelines.
**Correct Answer:** C. 10-30 μSv.