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Radiology and Nuclear Medicine

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Term
Definition
Radiology   Study of x-rays, radioactive substances and ionizing radiation.  
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Radiologist   One who specializes in radiology.  
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Radiogenic   Caused by or produced by radioactivity.  
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Radiotherapy   The treatment of diseases by the use of x-rays and other radioactive substances.  
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Roentgen (R)   The international unit for describing exposure dose of x-rays.  
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(MRI)Magnetic Resonance Imaging   A technique that uses radio waves and powerful magnet to produce images of a body's internal organs.  
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Dosimetrist   One who specializes in the planning and calculating of radiation dosage.  
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Half-Life   The time required for half of the radioactivity of a substance to be reduced by radioactive decay.  
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Scan   A process of using a moving device or a sweeping beam of radiation to produce images of the body.  
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Echography   The process of using ultrasound waves for diagnostic and treatment purposes.  
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Contrast Medium   A radiopaque or chemical substance used in some x-ray procedures to permit visualization of organs.  
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Radioactive   Charactized by emitting radiant energy.  
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ERTExternal Radiation Therapy   Method in which patient receives calculated doses of radiation from a machine located at some distance from a tumor.  
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Internal Radiation Therapy   Patient receives radiation from source inside the body.  
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Sealed Radiation Therapy   Radioactive material is sealed in gold container and placed closed to the tumor.  
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Unsealed Radiation Therapy   Radioactive materials are administered IV or PO  
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Nuclear Medicine   Branch of medicine that uses atomic particles for diagnostic or treatment purposes.  
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Tomography   The process of ''cutting'' across and producing images of single tissue plains. Mammogram  
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Cholecystogram   An x-ray record of the gallbladder.  
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Angiocardiogram   An x-ray of the heart and great blood vessels.  
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Hysterosalpingogram   An x-ray of the uterus and fallopian tubes.  
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Pyelography   An x-ray study of the kidney and renal pelvis.  
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Aortogram   An x-ray image of the aorta  
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Anticoagulant   A substance which prevents blood from clotting. Like EDTA and Heparin.  
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Buffy Coat   The white colored layer that forms between the packed RBC and the plasma and consists of WBC and Thrombocytes.  
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WBC Count   The number of WBC per cubic mm  
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Differential Count   Determines the percentage of each WBC  
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(ESR) Erythrocyte Sedimentation Rate   Test that determines the speed at which RBC settle at the bottom of a tube.  
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Hematocrit   Measures volume of RBC compare to whole blood.  
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Artifact   Unwanted marks on a radiogram  
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Myelograpy   Radiography of the spinal cord after injection of a contrast medium into the spinal canal.  
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Fluoroscopy   Radiographic procedure that uses a fluorescent screen instead of a photographic plate to produce an image of tissues and deep structures of the body.  
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CPK   Blood test that measures the level of the enzyme creatine phosphokinase.  
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Pro-ThrombinPT   Measures the ability of the blood to clot. Used to evaluate the effectiveness of anticoagulation drug therapy.  
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Mammogram   An X-ray image of the breast  
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