Seeing the Impossible - Lecture 10 PDF

seeing the impossible - lecture 10 Created @December 9, 2024 8:05 PM Class its whats the inside that counts Introduction to X-rays Discussion on imaging technology. Focus on m...

seeing the impossible - lecture 10 Created @December 9, 2024 8:05 PM Class its whats the inside that counts Introduction to X-rays Discussion on imaging technology. Focus on macro vs. micro imaging techniques. Importance of using X-rays to understand internal issues. Historical Context James Garfield: Assassinated, and the bullet couldn't be located due to lack of imaging technology. Alexander Graham Bell: Invented a metal detector to find the bullet but failed due to interference from bed springs. Photographic Revolution Advances in photography were essential for X-ray development. High-quality imaging was necessary for effective X-ray application. Discovery of X-rays Discovered accidentally by Wilhelm Röntgen using cathode ray tubes. Created the first X-ray image (his wife's hand showing bones and a wedding ring). seeing the impossible - lecture 10 1  Applications of X-rays Early use in medical diagnostics. Treatment for skin conditions (e.g., psoriasis). Identifying foreign objects inside the body. Radiation side effects initially unknown. How X-rays Work Wavelengths: X-rays have very short wavelengths and high energy. Penetration: Pass through soft tissue but are absorbed by dense materials like bones. Impact: Can damage DNA at the atomic level due to energy transfer. X-ray Technology Modern tubes ensure focused radiation for precision. Enabled the development of dynamic imaging for processes and 3D structures (CT scans). Advanced Applications X-ray Microscopy: Cellular-level imaging for detailed analysis. X-ray Crystallography: Determines molecular structures (e.g., proteins, DNA). Stereophotogrammetry: Combines X-rays with markers for surgical precision, especially in joint replacements. seeing the impossible - lecture 10 2