Request PDF on ResearchGate | Estudio de los hallazgos de la gammagrafía renal inmediata y su influencia en la supervivencia del injerto renal | Introduction: . Download scientific diagram | Gammagrafía renal que muestra riñón izquierdo hipoplásico y ectópico. from publication: Asociación MURCS: reporte de caso. Gammagrafía renal. Eliana Cintia Ramírez Jésica Regina Bruno ANATOMÍA DE LOS RIÑONES Son retroperitoneales ubicados en la región.
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It can provide unique information that is often unattainable using other imaging procedures. Your doctor will instruct you on how to prepare and may advise you to stop taking some medications or increase fluid intake prior to your exam.
Leave jewelry at home and wear loose, comfortable clothing. You may be asked to wear a gown. Renal scintigraphyalso known as “renal scans” refers to several examinations using radiopharmaceuticals that evaluate the function and anatomy of the kidneys.
Renal scintigraphy is one of many imaging methods used to evaluate the kidneys. Your doctor will determine which of these examinations will provide the best information about your kidneys. The different types of renal scans are used to examine different functional aspects of the kidneys; however, all of these procedures involve the injection of a radiopharmaceutical or radiotracer that emits a tiny amount of radioactivity into the patient.
Because the radiotracer interacts differently in different kinds of tissue, it can help physicians determine if something is wrong with the kidneys or if the kidneys are functioning normally. Renal scintigraphy can also be used to evaluate a kidney transplant.
After injection, the radiotracer travels throughout the body to the kidneys, where it gives off energy in the form of gamma rays. This energy is detected by a device called a gamma camera.
The camera works with a computer to produce special pictures offering details on both the structure and function of organs and tissues.
Four types of renal imaging help determine whether the kidneys are working normally or abnormally. Preparation can vary widely based on the type of scan being conducted.
You may be asked to drink extra fluid or possibly receive intravenous IV fluids. You may also be given a diuretic to increase urine production. In some cases, the bladder may need to remain empty during the scan, necessitating the insertion of a catheter. In other cases, you may be asked to go to the bathroom and empty your bladder prior to imaging. You also may be asked to discontinue use of some medications prior to your exam. Women should always inform gammagraria physician or technologist if there is any possibility that they are pregnant or if they are breastfeeding.
See the Safety page for more information about pregnancy and breastfeeding related to nuclear medicine imaging. You should inform your physician and the technologist performing your exam of any medications gammmagrafia are taking, including vitamins and herbal supplements. You should also inform them if you have any allergies and about recent illnesses or other medical conditions.
Jewelry and other metallic accessories should be left at home if possible, or removed prior to the exam because they rdnal interfere with the procedure.
The special camera and imaging techniques used in nuclear medicine include the gamma camera and single-photon emission-computed tomography SPECT. The gamma camera, also called a scintillation camera, detects radioactive energy that is emitted from the patient’s body and converts it into an image. The gamma camera itself does not emit any radiation.
The gamma camera is composed of radiation detectors, called gamma camera heads, which are encased in metal and plastic and most often shaped like a box, attached to a round circular donut shaped gantry. The patient lies on the examination table which slides in between two parallel gamma camera heads that are positioned above the patient and beneath the examination table.
Sometimes, the gamma camera heads are oriented at a 90 degree angle and placed over the patient’s body. SPECT involves the rotation of the gamma camera heads around the patient’s body to produce more detailed, three-dimensional images. With ordinary x-ray examinations, an image is made by passing x-rays through the patient’s body.
In contrast, nuclear medicine procedures use a radioactive material, called a radiopharmaceutical or radiotracer, which is injected into the bloodstream, swallowed or inhaled as a gas. This radioactive material accumulates in the organ or renak of your body being examined, where it gives off a small amount of energy gammabrafia the form of gamma rays. Special cameras detect this energy, and with the help of a computer, create pictures offering details on both the structure and function of organs and tissues in your body.
Unlike other imaging techniques, nuclear medicine imaging exams focus on depicting physiologic processes within the body, such as rates of metabolism or levels of various other chemical activity, instead of showing anatomy and structure.
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Areas of greater intensity, called remal spots,” indicate where large amounts of the radiotracer have accumulated and where gammagrafai is a high level of chemical or metabolic activity.
Less intense areas, or “cold spots,” indicate a smaller concentration of radiotracer and less chemical activity.
Nuclear medicine imaging is usually performed on an outpatient basis, but is often performed on hospitalized patients as well. Prior to imaging, you will be injected with a small amount of radiotracer. Diuretic renal scintigraphy, ACE-inhibitor renal scintigraphy, renal perfusion and function imaging will typically begin imaging while the tracer is being administered.
Cortical imaging requires a three hour delay after tracer administration for imaging to begin. You will be positioned on an examination table. If necessary, a nurse or technologist will insert an intravenous IV catheter into a vein in your hand or arm.
When it is time for the imaging to begin, the gamma camera will take a series of images.
The camera may rotate around you or it may stay in one position and you will be asked to change positions in between images. While the camera is taking pictures, you will need to remain still for brief periods of time.
You may be asked to sit gammgarafia lie down for the exam. You will feel a slight pin prick when the radiotracer is injected.
After the injection, you could experience a brief metallic taste. You will be asked to lie on your back or sit up, and will need to remain as still as possible while the camera takes each picture. It is important that you remain still while the images are being recorded. Though nuclear imaging itself causes no pain, there may be some discomfort from having to remain still or to stay in one particular position during imaging.
In some cases, the camera may move very close to your body. This is necessary to obtain the best quality images. If you are claustrophobic, you should inform the technologist before your exam begins. When the examination is completed, you may be asked to wait until the technologist checks the images in case additional images are needed. Occasionally, more images are obtained for clarification or better visualization of certain areas or structures. The need for additional images does not necessarily mean there was a problem with the exam or that something abnormal was found, and should not be a cause of concern for you.
Unless your physician tells you otherwise, you may resume your normal activities after your nuclear medicine scan. If any special instructions are necessary, you will be informed by a technologist, nurse or physician before you leave the nuclear medicine department. A radiologist or other physician who has specialized training in nuclear medicine will interpret the images and send a report to your referring physician.
Nuclear medicine procedures can be time-consuming. You will be informed as to how often and when you will need to return to the nuclear medicine department for further procedures. The resolution of structures of the body with nuclear medicine may not be as clear as with other imaging techniques, such as CT or MRI.
Gammagrafía renal by Jésica Bruno on Prezi
However, nuclear medicine scans are more sensitive than other techniques for a variety of indications, and the functional information gained from nuclear medicine exams is often unobtainable by any other imaging techniques. Please type your comment or suggestion into the text box below.
Please contact your physician gammzgrafia specific medical questions or for a referral to a radiologist or other physician. To locate a medical imaging or radiation oncology provider in your community, you can search the ACR-accredited facilities database. This website does not provide cost information. The costs for specific medical imaging tests, treatments and procedures may vary by geographic region. Web page review process: This Web page is gammagrafla regularly by a physician with expertise in the medical area presented and is further reviewed by committees from the Radiological Society of North America RSNA and the American College of Radiology ACRcomprising physicians with expertise in several radiologic areas.
For the convenience of our users, RadiologyInfo. What is renal scintigraphy? What are some common uses of the procedure? How should I prepare? What does the equipment look like? Renzl does the procedure work? How is the procedure performed?
What will I experience during and after the procedure? Who interprets the results and how do I get them? What are the benefits vs. What are the limitations of renal scintigraphy? Renal cortical scintigraphy detects the amount of functioning renal cortical tissue through images taken with a gamma camera approximately two hours after radiopharmaceutical injection. Renal perfusion and functional imaging examines blood flow to the kidneys and identifies potential narrowing of the renal arteries.
Through a series of images taken over 20 to 30 minutes immediately after radiopharmaceutical injection, it also helps determine how well the kidneys are working. Diuretic renal scintigraphy detects kidney blockages or obstruction of urine flow through images taken before and after the introduction of a diuretic to move urine through the kidneys.
ACE-inhibitor renal scintigraphy helps determine if the cause of a patient’s high blood pressure is coming from the kidneys, due to narrowing of the renal artery or arteries, by comparing kidney images before and after taking a blood pressure medication called an “ACE-inhibitor. You may be asked to wear a gown during the exam or you may be allowed to wear your own clothing. You will receive specific instructions based on the type of scan you are undergoing.
Depending upon the type of procedure, renal imaging can last from 30 minutes to 2 hours. Benefits The information provided by nuclear renal imaging is unique and often unattainable using other imaging procedures.
Renal imaging yields useful information needed to make a diagnosis or to determine appropriate treatment, if any. Risks Because the doses of radiotracer administered are small, diagnostic nuclear medicine procedures result in relatively low radiation exposure to the patient, acceptable for diagnostic exams.
Thus, the radiation risk is very low compared with the potential benefits. Nuclear medicine diagnostic procedures have been used for more than five decades, and there are no known long-term adverse effects from such low-dose exposure. The risks of the treatment are always weighed against the potential benefits for nuclear medicine therapeutic procedures.