Digital X-ray Radiogrammetry
- Digital X-ray Radiogrammetry
Digital X-ray Radiogrammetry (DXR) is a means of measuring bone mineral density (BMD). Digital X-ray radiogrammetry is based on the old technique of radiogrammetry. In DXR the cortical thickness of the three middle metacarpal bones in the hand is measured in a digital X-ray image by a computer and is through a geometrical operation converted to the forearm bone mineral density. The BMD is corrected for porosity of the bone, estimated by a texture analysis performed on the cortical part of the bone.
Like other technologies for estimating the bone mineral density, the outputs are an areal BMD value, a T-score and a Z-score for assessing osteoporosis and the risk of bone fracture.
Due to high precision it is used for monitoring change in bone mineral density over time.
References
*Estimation of bone mineral density by digital X-ray radiogrammetry: theoretical background and clinical testing, Rosholm A et. al, Osteoporos Int. 2001;12(11):961-9.
*Digital X-ray radiogrammetry: a new appendicular bone densitometric method with high precision, Jorgensen JT et. al, . Clin Physiol. 2000 Sep;20(5):330-5.
*Friis M, Digital X-ray Radiogrammetry on Hand X-rays Obtained on Mammographic X-ray Equipment, Journal of the International Bone and Mineral Society, 2001, 28; 5(suppl):P336 (IBMS 2001).
*Digital X-ray radiogrammetry combined with semiautomated analysis of joint space widths as a new diagnostic approach in rheumatoid arthritis: a cross-sectional and longitudinal study, Bottcher J et. al, Arthritis Rheum. 2005 Dec;52(12):3850-9.
External links
* [http://courses.washington.edu/bonephys/opbmd.html#tz Bone Densitometry explained]
Wikimedia Foundation.
2010.
Look at other dictionaries:
Digital X-ray radiogrammetry — (DXR) is a means of measuring bone mineral density (BMD). Digital X ray radiogrammetry is based on the old technique of radiogrammetry. In DXR the cortical thickness of the three middle metacarpal bones in the hand is measured in a digital X ray… … Wikipedia
Dual-energy X-ray absorptiometry — Not to be confused with Bone scan. Dual energy X ray absorptiometry Intervention A scanner used to measure bone density with dual energy X ray absorptiometry. ICD 9 CM … Wikipedia
Surgery — This article is about the medical specialty. For other uses, see Surgery (disambiguation). A cardiothoracic surgeon performs a mitral valve replacement at the Fitzsimons Army Medical Center. Surgery (from the Greek … Wikipedia
Osteotomy — Intervention ICD 9 CM 77.3 MeSH … Wikipedia
Ottawa ankle rules — Ligaments of the ankle. In medicine, the Ottawa ankle rules are a set of guidelines for doctors to aid them in deciding if a patient with foot or ankle pain should be offered X rays to diagnose a possible bone fracture. Before the introduction of … Wikipedia
Reduction (orthopedic surgery) — Intervention ICD 9 CM 79 Reduction is a medical procedure to restore a fracture or dislocation to the correct alignment. When a bone fractures, the fragments lose their alignment in the form of displacement or an … Wikipedia
Spinal fusion — Intervention An anterior posterior X ray of a case of adolescent idiopathic scoliosis post fusion ICD 9 CM … Wikipedia
Bone density — (or bone mineral density) is a medical term referring to the amount of matter per cubic centimeter of bones. [MeshName|Bone+Density] It is measured by a procedure called densitometry , often performed in the radiology or nuclear medicine… … Wikipedia
Arthroscopy — Intervention An example of shoulder arthroscopy. The surgeon looks at a video screen which is connected to a camera that is inserted into the body, together with working instruments. ICD 9 CM … Wikipedia
Orthopedic surgery — Intervention MeSH D019637 … Wikipedia
