Dexa for osteoporosis recommendation dont use dualenergy xray absorptiometry dexa screening for osteoporosis in women under age 65 or men under 70 with no risk factors. Bone density scan dexa scan how it is performed nhs. Clinical studies have demonstrated that abnormalities in body composition are a key predictor of health risks, including obesityrelated diseases, sarcopenia, and. Without major improvements in diagnosis and management, the rate of. Sv of radiation exposure from a spine and wholebody dxa scan is far less than the 80. Dualenergy xray absorptiometry dexa scans provide a stateoftheart way to assess your body composition. In the vast majority of our patients, we use our dxa interpretation to help answer three clinical questions. Performance, interpretation, and clinical application for technologists. A zscore compares your bone density to the average bone density of people your own age and gender. Bone density scanning, also called dualenergy xray absorptiometry dxa or bone. A radiologist, a physician specifically trained to supervise and interpret.
This video is created in order to briefly explain how to understand that. Dexafit is the gold standard for body fat testing, body composition analysis, dexa scans, vo2max testing, rmr analysis, heart rate fitness, hormone testing. Dexafit is the gold standard for body fat testing, body composition analysis, dexa scans, vo2max testing, rmr analysis, heart rate fitness, hormone testing, metabolic tests and more. Dxa scanning focuses on two main areas the hip and the spine. Doctors, with the help of a dexa scan, are able to confirm or verify the condition osteoporosis.
A practical approach to interpretation of dualenergy x. Dualenergy xray absorptiometry in the diagnosis of. Dxa is todays established standard for measuring bone mineral density bmd. Sv accumulated during a roundtrip transatlantic flight. Dualenergy xray absorptiometry dxa scans are costeffective examinations to monitor changes in bone mineral density bmd, to assess fracture risk, and to diagnose osteopenia and osteoporosis. Pitfalls in measurement and interpretation of bone. Pdf interpreting a dxa scan in clinical practice researchgate. Dualenergy xray absorptiometry dexa is the technique of choice in the assessment of bone mineral density bmd, the average concentration of mineral in a defined section of bone. Find out what it means, how its calculated, and more. This manual focuses on dxa scan acquisition and analysis.
Dualenergy xray absorptiometry dxa 1 is a clinically proven, accurate, and reproducible method of measuring bone mineral density bmd in the lumbar spine, proximal femur, forearm, and whole body 27. The clinical utility of dxa is highly dependent on the quality of the scan acquisition, analysis, and interpretation. Please select the ethnicity that best describes you patient name. Can anyone tell me what documentation requirements are needed to bill for a bone density interpretation and report. If you are not sure how to answer a question, leave the space blank and we will assist you with the answer when you are seen at our facility. Feb 05, 2016 many people, especially postmenopausal women, go to the doctor because of weak bones and get sent for a dexa bone scan. Peak bone density is reached by age 30 and should ideally. Bone density scans are often used to diagnose or assess your risk of osteoporosis, a health condition that weakens bones and makes them more likely to break.
Oct 19, 2012 a dexa scan is a technique that is used to measure the density of bone mineral. Frax was incorporated into dxa scan ners to provide frax probabilities at the time of dxa. Bone mineral density, dual energy xray absorptiometry, osteoporosis, osteopenia. Understand specific consideration for interpreting dxa in children, premenopausal. One common test doctors use is called dual energy xray absorptiometry dxa or dexa. Dxa measures the bone density at your spine and hip.
The frax results are shown on the dxa printout just below the bmd results. Dexa result is based on the worst score of the individual scores of the spine, total hip, femoral neck, and when applicable, the onethird radius forearm. Dxa, which stands for dualxray absorptiometry, is a low radiation xray capable of detecting very small percentages of bone loss. Youll want to look at all the results, not just the summary page. Dexa is a quick method that is accurate exact measurement of bmd, precise reproducible, and flexible different regions can be scanned and is performed with a low radiation dose 3, 4. Testing your bone density how strong your bones are is the only way to know for sure if you have osteoporosis. Bone density testing in general practice poor bone health is common in australia an estimated 4. It is used primarily in the diagnosis and management of osteoporosis and. Ucsf department of radiology and biomedical imaging. Depending on specific factors, related to the clinical status of the patient or technical aspects of the test itself, interpretation of a dxa examination ranges from straightforward to complicated. Understanding the results of your dxa test international. Dxa measurements can also be used to provide information on early gender and ethnic changes in the rate of bone accretion and to determine the. Understanding your total body test reportoverview the traditional or typical dexa with which people are most familiar provides measurements of bone mineral. Two xray beams, with different energy levels, are aimed at the patients bones.
Advances in dxa technology, combined with rising rates of obesity and other musculoskeletal disorders, are driving widespread adoption of dxa scans to evaluate body composition. Dualenergy xray absorptiometry interpretation and reporting in children and. As bmd decreases from this peak density, fracture risk increases. Bone densitometry dexa, dxa bone densitometry, also called dualenergy xray absorptiometry, dexa or dxa, uses a very small dose of ionizing radiation to produce pictures of the inside of the body usually the lower or lumbar spine and hips to measure bone loss.
There are many ways of getting your body fat tested, but most experts will agree that the dexa dualenergy xray absorptiometry scan is the most accurate testing technology available. The tscore is a comparison of a persons bone density with that. Maintain existing treatment schedule and return patient for dexa scan in approximately 2 years. Dxa scans are also interpreted by other physicians such as rheumatologists and endocrinologists. Premenopausal women and men younger than 50 will only have zscores. How to interpret your body fat test written by calvin sun. Your dexa scan test results how to interpret the scores. A practical approach to interpretation of dualenergy xray.
A bone density scan uses low dose xrays to see how dense or strong your bones are. Choplin leon lenchik scott wuertzer published online. Overview of dual energy xray absorptiometry dxa will be used to assess overall skeletal changes that often occur with age by measuring bone mineral content bmc and bone mineral density bmd. Recommendations for osteoporosis screening with dexa scan.
Documentation needed for dexa compliance ask an expert. In clinical practice, recognition of diverse artifacts and disease processes that may influence bmd results can be of major importance in the optimal interpretation of dxa scans. Specifically wondering if a letter to the patient regarding the dexa results is appropriate enough documentation to count as interpretation or if a separate note on the interpretation is needed. Dualenergy xray absorptiometry dxa scans to measure bone mineral density at the spine and hip have an important role in the evaluation of individuals at risk of osteoporosis, and in helping.
Explanation of body composition assessment results. How to interpret your body fat test invictus fitness. This gold standard test allows us to accurately determine your overall body fat mass and fat free mass including specific body segments being your arms, trunk, waist, hips and legs. Instances where reporting and interpretation of dxa. Dexa is not cost effective in younger, lowrisk patients, but is cost effective in older patients.
Body fat testing is a great way to have an accurate metric for your body composition. Osteoporosis screening, diagnosis, and treatment guideline. Interpretation and use of frax in clinical practice. Premenopausal i usually have regular menstrual periods perimenopausal irregular periods, but i have had at least 1 period in the past 12 months. This is one of the most accurate tests available today and is presently the most widely used technique that is used to measure bone density. Dxa is todays established standard for measuring bone mineral density bmd an xray radiograph is a noninvasive medical test that helps physicians diagnose and treat medical. Dexa is a quick method that is accurate exact measurement of bmd, precise reproducible, and flexible different regions can be scanned and is performed with. Fundamentals, methodology, and clinical applications 411 indicaciones y las di. New and novel approaches to the interpretation of dxa body composition keep dxa at the forefront of applications ranging from infants to the morbidly obese, and athletes to the elderly. Other means of assessing bone strength are also available but a dexa scan is currently the most accurate method and it uses the lowest amount of radiation a standard chest xray exposes you to 10 times more radiation than a typical dexa scan.
It is commonly used to diagnose osteoporosis, to assess an. This may be asking you to have a bone scan, or talking to you about measures that can help prevent. A dexa scan is a technique that is used to measure the density of bone mineral. Dexa scan should be several pages long, have many charts and xrays of the spine and hip. Official positions international society for clinical. Oct 26, 2015 ground rules for understanding more about dexa scan results. Changes have been made to the 2010 car technical standards for bone mineral densitometry reporting to incorporate principles from the 2010 clinical practice guidelines for the diagnosis and management of osteoporosis in canada from osteoporosis canada. This is a pdf file of an unedited manuscript that has been accepted for publication. Bone density scanning, also called dualenergy xray absorptiometry dxa or bone densitometry, is an enhanced form of xray technology that is used to measure bone loss. However, when dxa studies are performed incorrectly, it can lead to major mistakes in diagnosis and therapy. Dxa allows accurate diagnosis of osteoporosis, estimation of fracture risk and monitoring of patients undergoing treatment.
Continued interpreting your dexa bone scan results. Obtain copies of your full bone density reports from your dexa or dxa scans. Even with an abnormal dexa scan, the risk of fracture is still very low, and treatment isnt. The defining characteristic of osteoporosis is reduced bone mineral density as identified by dual energy xray absorptiometry dxa. Bone mineral measurements lippincott cmeconnection wolters. The dxa scan is typically used to diagnose and follow osteoporosis, as contrasted to the nuclear bone scan, which is sensitive to certain metabolic diseases of bones in which bones are attempting to heal from infections. For example, if you are a 60yearold female, a zscore compares your bone density to the average bone density of 60yearold females. Interpreting bmd measurements in children is complicated by the growing skeleton. Bone densitometry in children and adolescents american.
Survey nhanes by dual energy xray absorptiometry dxa scans of the femur and anteriorposterior ap spine. It is a safe and noninvasive method of testing which exposes you to less radiation than a mammogram. Along with advice from your personal trainer, dietitian or exercise physiologist, a dexa body composition scan will provide you with the information you need to help you. Introduction osteoporosis is a metabolic bone disorder characterized by low bone mass and microarchitectural deterioration, with a subsequent increase in bone fragility and susceptibility to fracture. Dualenergy xray absorptiometry dxa is a technology that is widely used to diagnose osteoporosis, assess fracture risk, and monitor changes in bone mineral density bmd. Dualenergy xray absorptiometry in the diagnosis of osteoporosis. A bone mineral density bmd test is can provide a snapshot of your bone health. Understanding your total body test reportoverview the traditional or typical dexa with which people are most familiar provides measurements of bone mineral density md in four spinal lumbars and left and right femurs. Dec 08, 2017 your frax score is your risk of having an osteoporosisrelated fracture in the next 10 years. Dual energy xray absorptiometry dxa procedures manual. Body composition measurements from dxa have been available since dxa technology was developed 30 years ago, but are historically underutilized. With most types of bone density tests, a person remains fully dressed, but you do need to make sure no buttons or zippers are in the way of the area to be scanned.
Dexa scan help for understanding your results better bones. A practical approach to interpretation of dualenergy xray absorptiometry dxa for assessment of bone density robert h. Interpretation of dxa scans deborah sellmeyer, md professor of medicine division of endocrinology, gerontology, and metabolism stanford university, school of medicine dxa technology xray source two energies with different attenuation profiles collimator pinhole for pencil beam, slit for fan beam patient. View the aafp choosing wisely recommendation on dualenergy xray absorptiometry dexa screening for osteoporosis in women under age 65 or men under 70. Any post menopausal woman should always request her tscore rather than just her zscore. A dexa scan is a quick and painless procedure that involves lying on your back on an xray table so an area of your body can be scanned. Jul 09, 2012 before interpreting pediatric dxa scan, a physician should be clear that diagnosis of osteoporosis can not be reached on the basis of bmd alone because till now there is paucity of data which corelates bmd scores with fracture risk, also bmd estimation is affected by bone area which is variable in children. Scanning of the axial skeleton by dual energy xray absorptiometry dxa is the gold standard in australia for the measurement of bone mineral density bmd. This information can help your doctor decide whether further action needs to be taken.
The test can identify osteoporosis, determine your risk for fractures broken bones, and measure your response to osteoporosis treatment. All answers will be kept in strict confidence and treated as medical record information. However, dxa is highly dependent on the quality of scan acquisition, analysis, and interpretation. The core elements of this program focus on performing quality dxa scans, dissecting the data and applying this knowledge to a technologists role in patient care.
Peak bone density is reached by age 30 and should ideally be maintained at this level throughout your life. Women discontinuing estrogen should be considered for bone density. This method will be used to 1 monitor secular trends in overweight prevalence. Dualenergy xray absorptiometry dxa, previously dexa is a means of measuring bone mineral density bmd using spectral imaging. Pitfalls in measurement and interpretation of bone mineral density. Article best practice guidelines for dxa scans and reports. Dont use dualenergy xray absorptiometry dexa screening for osteoporosis in women under age 65 or men under 70 with no risk factors. Recently, there have been rapid developments in body composition assessment including the analysis and publication. Dualenergy xray absorptiometry is the most widely used and most thoroughly studied bone density measurement technology. A practical approach to interpretation of dualenergy xray absorptiometry dxa for assessment of bone density. Bone density in the hip and spine can also predict the likelihood of future breaks in other bones. Composition scans if youre serious about your fitness or weightloss program, you need to have a dexa body composition scan to assess and show the distribution of your body fat.
It is used primarily in the diagnosis and management of osteoporosis and other disease states characterized by. And understanding those results is important if you are serious about strengthening your bones. Interpreting a dxa scan in clinical practice intechopen. The young normal or tscore indicates how your bmd compares to that of a healthy 30 yearold. Along with advice from your personal trainer, dietitian or exercise physiologist, a dexa body composition scan will provide you with the information you need to help you achieve your goals. The most commonly used bmd test is called a central dualenergy xray absorptiometry, or central dxa test. Suggested explanation of dxa scans english version it will take a few minutes to position you correctly for each scan and another few minutes to take the scans.
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