Final answer:
Magnetic Resonance Imaging (MRI) provides the best non-invasive imaging of soft tissues without radiation exposure, making it particularly useful for identifying tumors. Ultrasounds are the safest imaging technique during pregnancy because they do not involve electromagnetic radiation.
Step-by-step explanation:
Best Imaging Technique for Soft Tissues
Among the non-invasive diagnostic techniques provided, Magnetic Resonance Imaging (MRI) offers the best imaging of soft tissues. MRI uses magnetic fields and radio waves to produce detailed images, particularly useful for identifying tumors and differentiating between healthy and diseased tissue. Unlike CT scans and PET scans that involve ionizing radiation, MRI does not expose patients to radiation, making it a safer option, especially for individuals requiring multiple scans.
Safest Imaging Technique During Pregnancy
When considering the safety of imaging studies during pregnancy, ultrasounds are the safest option. Ultrasound technology is non-invasive and does not use electromagnetic radiation, which is why it is commonly used to monitor fetal development. On the other hand, CT scans, PET scans, and X-rays involve exposure to radiation, which could potentially be harmful to the developing fetus.