Group 1 - A tragic incident occurred in New York where a man died after being pulled into an MRI machine due to wearing a metal necklace, highlighting the dangers associated with MRI technology [1][18][22] - MRI technology operates based on the principles of quantum mechanics, specifically the concept of "spin" in atomic nuclei, which allows for imaging without ionizing radiation [3][4][22] - Hydrogen nuclei are the primary focus in MRI due to their abundance in the human body and their magnetic properties, making them ideal for imaging [4][6][24] Group 2 - The MRI machine generates a strong magnetic field that can be several thousand times stronger than the Earth's magnetic field, posing risks if metal objects are present [18][20][22] - Unlike X-rays and CT scans, MRI does not involve ionizing radiation, making it a safer option for imaging [22][24] - The technology has become essential in modern medicine, with numerous patients relying on it for diagnosis, although strict adherence to safety protocols is necessary to prevent accidents [24]