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RADIOLOGY As Clinical Anatomy Speaker note Dr Mohamed El Safwany, MD. 1 Intended learning outcome The student should learn at the end of this lecture Clinical Radiological Anatomy . Intended Learning Outcomes Understand basics of image generation. Relate imaging to gross anatomy. See clinical relationship to basic science. Appreciate constraints and limitations. Develop imaging vocabulary. WHAT IS RADIOLOGY? Medical specialty that supervises and interprets imaging studies. Reports findings to referring physicians. 4 RADIOLOGIST ROLE Separate: Normal from Abnormal Characterize / Describe: Abnormality Determine: Extent (stage) of disease Suggest: Diagnosis / Differential Recommend: Further exams / follow-up 5 X-RAY Discovered and named by Dr. W. C. Röentgen at University of Würzburg, 1895 Awarded first Nobel prize for physics, 1901 6 PROJECTION -VSTOMOGRAPHIC IMAGE 7 FOOT AP PROJECTION (ANTERIOR - POSTERIOR) RT 8 LATERAL FOOT 9 TOMOGRAPHIC IMAGES ARE IN A SPECIFIC PLANE AXIAL RT CORONAL SAGITTAL RT 10 CT- HEAD RT CT REFERENCE FILM Skull / brain 11 RADIOLOGY TOOLS X- RAY ULTRASOUND NUCLEAR MEDICINE MAGNETIC RESONANCE COMPUTED TOMOGRAPHY 12 HOW IS IMAGING DONE? IONIZING RADIATION X-ray, CT, Nuclear Medicine SOUND WAVES Ultrasound MAGNETIC FIELDS / RADIO WAVES Magnetic Resonance 13 X- RAY High Energy Photon --Kilo Electron Volts Ionizing Radiation Exposes Film / Detector Projection Data 14 X-RAYS PLAIN FILM RADIOGRAPHY Chest Mammography Abdomen Spine Extremities & Joints Skull 15 X - RAY --- FOUR BASIC DENSITIES Air Soft Tissue Fat Bone 16 CONTRAST RADIOGRAPHY Injection, ingestion, or other placement of opaque material within the body. Improves visualization and tissue separation. Can demonstrate functional anatomy and pathology. 17 UPPER GI--(GASTRO INTESTINAL) STOMACH ORAL BARIUM CONTRAST WITHOUT CONTRAST-plain or scout film COLON BARIUM ENEMA RECTAL BARIUM CONTRAST 18 INTRAVENOUS PYELOGRAM – IVP INTRAVENOUS IODINE CONTRAST WITHOUT CONTRAST-plain or scout film ARTERIOGRAM INTRAARTERIAL IODINE CONTRAST 19 COMPUTED TOMOGRAPHY HIGH ENERGY PHOTON IONIZING RADIATION EXPOSES DETECTOR TOMOGRAPHIC DATA 20 CT EXAMPLE RT NUCLEAR MEDICINE High Energy Photon Ionizing Radiation --Radiopharmaceutical Exposes Detector Projection Data Dynamic / Physiologic 22 NUCLEAR MEDICINE EXAMPLES Bone Hepatobiliary Renal 23 ULTRASOUND Sound Wave - high Frequency No Ionizing Radiation Transmitter / Receiver Tomographic Data 24 ULTRASOUND EXAMPLES Gallbladder Kidney Obstetrics 25 MAGNETIC RESONANCE Hydrogen Protons In a Magnetic Field Radio Wave Signal Transmission No Ionizing Radiation Tomographic Data 26 MAGNETIC RESONANCE RT EXAMPLES Brain Spine Knee 27 RADIOLOGY EVALUATION Multiple Choice - Identify Labeled Images From Digital Film Sets And Lecture Images 28 HOSPITAL LINGO You will hear and see these abbreviations used frequently in the medical community. X- Ray Plain Film Scout Film Computed Tomography Nuclear Medicine Ultrasound Sono Magnetic Resonance Radiograph Cat Scan CT Nuc Med Sonogram MR MRI 29 SUMMARY TOMOGRAPHY- VS- PROJECTION IMAGES SECTION PLANES AXIAL CORONAL SAGITTAL IMAGE GENERATION OF: Nuclear Medicine Computed Tomography Ultrasound X-ray Magnetic Resonance 30 Text Book David Sutton’s Radiology Clark’s Radiographic positioning and techniques Assignment Two students will be selected for assignment. Question Define tomographic planes? Thank You 34