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RADIOLOGY Radiology Radiology Radiology
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Dr / Anwar Abd-Elgayed Ebeed
Assistant Professor Telephone no / .com
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RADIOLOGY AND DIAGNOSTIC IMAGING
1st Lecture
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DIAGNOSTIC IMAGING Plain X ray Myelography CT scan MRI scan Ultrasound
Isotope Study e.g. Bone scan Angiogram
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Plain x ray CT Ultrasonography
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CT MRI Myelography
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Ultrasonography Bone scan
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Radiology & Diagnostic Imaging Overview
X-Rays High-energy electromagnetic waves Travel in straight lines Shorter wave length than visible light Able to penetrate solid materials of varying densities Capable of exposing a photographic plate (x-ray film) Much the same way as a camera exposes film
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Radiology & Diagnostic Imaging Overview (continued)
X-Rays (continued) Used to visualize internal organs and structures of body Provide valuable means for verifying presence of illness or disease Radiology Study of the diagnostic and therapeutic uses of x-rays
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Radiology & Diagnostic Imaging Overview (continued)
X-Rays (continued) Used to visualize internal organs and structures of body Provide valuable means for verifying presence of illness or disease Radiology Study of the diagnostic and therapeutic uses of x-rays
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PROCEDURES AND TECHNIQUES
RADIOLOGY AND DIAGNOSTIC IMAGING
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Angiocardiography (Cardiac Catheterization)
Pronounced (an-jee-oh-kar-dee-OG-rah-fee) (CAR-dee-ak kath-eh-ter-ih-ZAY-shun) Defined A specialized diagnostic procedure in which a catheter is introduced into a large vein or artery, usually of an arm or a leg, and is then threaded through the circulatory system to the heart
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Angiocardiography
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Angiography Pronounced (an-jee-OG-rah-fee) Defined
A series of x-ray films allowing visualization of internal structures after the introduction of a radiopaque substance
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Coronary angiography MRI angiography
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Cerebral Angiography Pronounced (seh-REE-bral an-jee-OG-rah-fee)
(SER-eh-bral an-jee-OG-rah-fee) Defined Injection of a radiopaque contrast medium into an arterial blood vessel (carotid, femoral, or brachial) to make visualization of the cerebral vascular system via x-ray possible
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Cerebral Angiography
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Renal Angiography Pronounced (REE-nal an-jee-OG-rah-fee) Defined
X-ray visualization of the internal anatomy of the renal blood vessels (blood vessels of the kidney) after injection of a contrast medium
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Renal angiography
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Arteriography Pronounced (ar-tee-ree-OG-rah-fee) Defined
X-ray visualization of arteries following the introduction of a radiopaque contrast medium into the blood stream through a specific vessel by way of a catheter
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Hepatic arteriography
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Arthrography Pronounced (ar-THROG-rah-fee) Defined
The process of taking x-rays of the inside of a joint, after a contrast medium has been injected into the joint Contrast medium makes the inside of the joint visible
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Arthrography
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Barium Enema (BE) Pronounced (BAH-ree-um EN-eh-mah) Defined
Infusion of a radiopaque contrast medium, barium sulfate, into the rectum Contrast medium is retained in lower intestinal tract while x-ray films are obtained of the lower GI tract
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Barium Enema (BE)
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Barium Swallow (Upper GI Series)
Pronounced (BAH-ree-um SWALL-oh) Defined Oral administration of a radiopaque contrast medium, barium sulfate, which flows into the esophagus as the person swallows X-rays are taken as barium sulfate flows into the upper GI tract
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Bronchography Pronounced (brong-KOG-rah-fee) Defined
Bronchial examination via x-ray following the coating of the bronchi with a radiopaque substance
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Bronchography Main air way ronchgraphy
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Cholangiography (Intravenous)
Pronounced (koh-lan-jee-OG-rah-fee) (in-trah-VEE-nus) Defined Visualizing and outlining of the major bile ducts following an intravenous injection of a contrast medium
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Cholangiography
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Cholangiography (Percutaneous Transhepatic)
Pronounced (koh-lan-jee-OG-rah-fee) (per-kyoo-TAY-nee-us trans-heh-PAT-ik) Defined Examination of the bile duct structure using a needle to pass directly into an intrahepatic bile duct to inject a contrast medium Also known as PTC or PTHC
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Percutaneou cholangiography
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Cholangiopancreatography (Endoscopic Retrograde)
Pronounced (koh-lan-jee-oh-pan-kree-ah-TOG-rah-fee) (en-doh-SKOP-ic RET-roh-grayd) Defined Procedure that examines the size of and the filling of the pancreatic and biliary ducts through direct radiographic visualization with a fiberoptic endoscope
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Endoscopic Retrograde
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Cholecystography (Oral)
Pronounced (koh-lee-sis-TOG-rah-fee) Defined Visualization of the gallbladder through x-ray following the oral ingestion of pills containing a radiopaque iodinated dye
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Cholecystography
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Cineradiography (Pronounced) (sin-eh-ray-dee-OG-rah-fee) Defined
Diagnostic technique combining the techniques of fluoroscopy, radiography, and cinematography by filming the images that develop on a fluorescent screen with a movie camera
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Cineradiography
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Computed Axial Tomography (CT, CAT)
Pronounced (kom-PEW-ted AK-see-al toh-MOG-rah-fee) Defined A painless, noninvasive diagnostic x-ray procedure using ionizing radiation that produces a cross-sectional image of the body
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Computed Axial Tomography (continued)
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Computed Axial Tomography
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Abdominal CT
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Voiding Cystourethrography
Pronounced (VOYD-ing sis-toh-yoo-ree-THROG-rah-fee) Defined X-ray visualization of the bladder and urethra during the voiding process, after the bladder has been filled with a contrast material
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Cystourethrography
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Digital Subtraction Angiography (DSA)
Pronounced (DIJ-ih-tal sub-TRAK-shun an-jee-OG-rah-fee) Defined X-ray images of blood vessels only, appearing without any background, due to the use of a computerized digital video subtraction process
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Angiography
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Renal angiogram Renal CT angiogram
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Echocardiography Pronounced (ek-oh-kar-dee-OG-rah-fee) Defined
Diagnostic procedure for studying the structure and motion of the heart via ultrasound Useful in evaluating structural and functional changes in a variety of heart disorders
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Echocardiography
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Fluoroscopy Pronounced (floor-or-OSS-koh-pee) Defined
Radiological technique used to examine the function of an organ or a body part using a fluoroscope
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Fluoroscopy Fluoroscopy is a study of moving body structures - similar to an x-ray "movie." A continuous x-ray beam is passed through the body part being examined, and is transmitted to a TV-like monitor so that the body part and its motion can be seen in detail. Fluoroscopy is used in many types of examinations and procedures, such as barium x-rays, cardiac catheterization, and placement of intravenous (IV) catheters (hollow tubes inserted into veins or arteries). In barium x-rays, fluoroscopy allows the physician to see the movement of the intestines as the barium moves through them. In cardiac catheterization, fluoroscopy enables the physician to see the flow of blood through the coronary arteries in order to evaluate the presence of arterial blockages. For intravenous catheter insertion, fluoroscopy assists the physician in guiding the catheter into a specific location inside the body.
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Fluoroscopy
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Hysterosalpingography
Pronounced (his-ter-oh-sal-ping-OG-rah-fee) Defined X-ray assessment of the uterus and the fallopian tubes by injecting a contrast material into these structures
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Hysterosalpingography
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Lymphangiography Pronounced (lim-fan-jee-OG-rah-fee) Defined
X-ray assessment of the lymphatic system following injection of a contrast medium into the lymph vessels in the hand or foot
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Lymphangiography
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Magnetic Resonance Imaging (MRI)
Pronounced (mag-NET-ik REZ-oh-nans IM-ij-ing) Defined A noninvasive scanning procedure that provides visualization of fluid, soft tissue, and bony structures without the use of radiation
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Magnetic Resonance Imaging
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Mammography Pronounced (mam-OG-rah-fee) Defined
Process of taking x-rays of the soft tissue of the breast to detect various benign and/or malignant growths before they can be felt
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Mammography
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Myelography Pronounced (my-eh-LOG-rah-fee) Defined
Introduction of contrast medium into the lumbar subarachnoid space through a lumbar puncture to visualize the spinal cord and vertebral canal through x-ray examination
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Myelography
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Positron Emission Tomography Scan (PET)
Pronunciation (POZ-ih-tron ee-MISH-un toh-MOG-rah-fee) Defined Computerized radiographic images of various body structures produced when radioactive substances are inhaled or injected
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Positron Emission Tomography Scan
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Pyelography (Intravenous) (IVP)
Pronounced (pye-eh-LOG-rah-fee) (in-trah-VEE-nus) Defined Radiographic procedure that provides visualization of the entire urinary tract: kidneys, ureters, bladder, and urethra Also known as intravenous pyelogram or excretory urogram
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Pyelography
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Radiation Therapy Pronounced (ray-dee-AY-shun THAIR-ah-pee) Defined
The delivery of ionizing radiation to accomplish one or more of the following: Destruction of tumor cells Reduction of tumor size Decrease in pain Relief of obstruction To slow or stop the spread of cancer cells
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Radiation Therapy
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Radiation Therapy (continued)
Destroys rapidly multiplying cells regardless if they are cancerous Goal of therapy is to reach maximum tumor control with no, or minimum, normal tissue damage May be delivered by teletherapy (external) May be delivered by brachytherapy (internal)
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Radioactive Iodine Uptake
Pronounced (ray-dee-oh-AK-tiv EYE-oh-dine UP-tayk) Defined An examination that determines the position, size, shape, and physiological function of the thyroid gland through the use of radionuclear scanning Image of the thyroid is recorded and visualized after a radioactive substance is given
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Radioactive Iodine Uptake
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Scanning Pronounced (SCAN-ing) Defined
Scanning of specific parts of the body with a gamma camera after an intravenous injection of a radionuclide material, which is absorbed by the area to be studied The image of the area being studied is displayed by recording the concentration or collection of a radioactive substance specifically drawn to that area
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Scanning (continued) Bone Scan
Involves intravenous injection of a radionuclide material absorbed by bone tissue Used to detect spread of cancer to the bones, osteomyelitis, and other destructive changes in the bones
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Bone Scan
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Scanning (continued) Brain Scan
Nuclear scanning of cranial contents 2 hours after an intravenous injection of radioisotopes Useful in diagnosing abnormal findings such as an acute cerebral infarction, cerebral neoplasm, cerebral hemorrhage, brain abscess, aneurysms, cerebral thrombosis, hematomas, hydrocephalus, cancer metastasis to the brain, and bleeds
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Brain Scan
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Scanning (continued) Liver Scan
Noninvasive scanning technique that enables the visualization of the shape, size, and consistency of the liver after the IV injection of a radioactive compound Useful in detecting cysts, abscesses, tumors, granulomas, or diffuse infiltrative processes affecting the liver
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Liver metastasis CT scan Liver enlargement
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Scanning (continued) Lung Scan
Visual imaging of the distribution of ventilation or blood flow in the lungs by scanning the lungs after the patient has been injected with or inhaled radioactive material
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CT lung scan
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Scanning (continued) Spleen Scan
Noninvasive scanning technique that enables the visualization of the shape, size, and consistency of the spleen after injection of radioactive red blood cells Useful in detecting damage, tumors, and other problems
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Liver spleen scan
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Small Bowel Follow-through
Pronounced (Small Bowel Follow-Through) Defined Oral administration of a radiopaque contrast medium, barium sulfate, which flows through the GI system X-ray films are obtained at timed intervals to observe the progression of the barium through the small intestines
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Tomography Pronounced (toh-MOG-rah-fee) Defined
X-ray technique used to construct a detailed cross-section, at a predetermined depth, of a tissue structure Useful in identifying space-occupying lesions in the liver, brain, pancreas, and gallbladder
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Tomography (liver tumour)
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Ultrasonography (Ultrasound)
Pronounced (ull-trah-son-OG-rah-fee) Defined Procedure in which sound waves are transmitted into the body structures as a small transducer is passed over the patient’s skin Sound waves are reflected back into the transducer and are interpreted by a computer that converts waves to a composite picture form
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Ultrasonography (continued)
Abdominal Ultrasound Use of reflected sound waves to provide reliable visualization of the liver, gallbladder, bile ducts, pancreas, kidneys, bladder, and ureters
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Ultrasonography
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Ultrasonography (continued)
Pelvic Ultrasound Noninvasive procedure that uses high-frequency sound waves to examine the abdomen and pelvis Can be used to locate a pelvic mass, an ectopic pregnancy, or an intrauterine device, and to inspect and assess the uterus, ovaries, and fallopian tubes
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Pelvic Ultrasound
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Ultrasonography (continued)
Renal Ultrasound Noninvasive ultrasound of the kidneys that is useful in distinguishing between fluid-filled cysts and solid masses, detecting renal calculi, identifying obstructions, and evaluating transplanted kidneys Thyroid Echogram (Ultrasound) Ultrasound examination important in distinguishing solid thyroid nodules from cystic nodules
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Venography Pronounced (vee-NOG-rah-fee) Defined
Technique used to prepare an x-ray image of veins, which have been injected with a contrast medium that is radiopaque Also called phlebography
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Venography
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Xeroradiography Pronounced (zee-roh-ray-dee-OG-rah-fee) Defined
A diagnostic x-ray technique used to produce an electrical image rather than a chemical image Uses less radiation and exposure time than ordinary x-rays
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Xeroradiography
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X-Rays Pronounced (ECKS-rays) Defined
The use of high-energy electromagnetic waves, passing through the body onto a photographic film, to produce a picture of the internal structures of the body for diagnosis and therapy
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X-Rays (continued) Chest X-Ray
Visualization of the interior of the chest Provides diagnostic information about the following: Tumors, inflammation, accumulation of fluid, accumulation of air, bone fractures, diaphragmatic hernia, size of heart, calcification, placement of centrally located intravenous access devices
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X-Rays (continued) Chest X-Ray Views Posteroanterior (PA) Lateral
X-rays pass through the posterior (back) to the anterior (front) Lateral X-rays pass through the person’s side Oblique X-rays are taken from different angles Decubitus X-rays are taken with person in recumbent lateral position – aids in localizing fluid
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Chest X-Ray
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Thank you Questions
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Thank you
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