Medical Physics ABR Part 1 Clinical

Rate the body systems in order of decreasing radio-sensitivity. - 1. Hematopoietic, Reproductive (2-5 Gy) 2. Skin, cornea, lens of eyes, GI organs (10 Gy) 3. Bone and cartilage 4. Lungs, kidneys, Liver, Pancreas 5. Muscle, brain, nerves, spinal cord (20 Gy) a. What are the components of the cell cycle & their order? b. What is the relative radio-sensitivity of each? - Mitosis (M), Gap 1 (G1), Synthesis (S), Gap 2 (G2) a. M - G1 - S - G2 b. M G2 G1 S Cerebellum: a. Function b. Location - a. Motor control, balance b. Directly posterior to the brain stem. Cerebrum: a. Function and properties b. Divisions - a. Higher functions: thought, action. b. 4 lobes: frontal (anterior), parietal (superior), occipital (posterior), temporal (lateral x 2). Cerebral cortex - Sheet of neural tissue outermost to the cerebrum. Grey matter Brain steam function - Basic vital life functions (breathing, heartbeat, etc. Corpus callosum - Connects the two parts of the cerebrum. {Lets the two hemispheres talk to each other, i.e. "call" each other} Alveoli a. Location b. Function - a. Lungs b. Air-lung interface. Diffusion of O2, CO2. Hiatal hernia a. Describe condition b. Imaging modality to diagnose? - a. Part of the stomach sticks upward into the chest through opening in the diaphragm. b. UGI x-ray after ingestion of barium