Ultrasound of how much frequency is beamed into human body for sonography ?

Options

A. 45 - 70 MHz
B. 30 -45 MHz
C. 15 -30 MHz
D. 1 - 15 MHz

Answer

To solve the question regarding the frequency of ultrasound used in sonography, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Sonography**:
- Sonography is a medical imaging technique that uses ultrasound waves to visualize internal organs and structures within the body.

2. **Frequency Range for Medical Ultrasound**:
- The typical frequency range for ultrasound used in medical sonography is between 2 to 18 megahertz (MHz). This range is effective for imaging purposes.

3. **Frequency Characteristics**:
- Lower frequencies (around 2 MHz) have better penetration capabilities, allowing them to reach deeper tissues but produce lower resolution images.
- Higher frequencies (up to 18 MHz) provide better resolution images but have less penetration power, making them suitable for imaging superficial structures.

4. **Analyzing Options**:
- If the question provides multiple-choice options, we need to identify which option falls within the 2 to 18 MHz range.
- The option that is closest to this range is the correct answer.

5. **Conclusion**:
- Based on the analysis, the correct frequency range for ultrasound used in sonography is between 2 to 18 MHz.

### Final Answer:
- The frequency of ultrasound beamed into the human body for sonography is typically between **2 to 18 megahertz (MHz)**.