dual-photon absorptiometry


Also found in: Encyclopedia.

dual-photon absorptiometry

A technique used to measure bone density.

Pros
DPA measures bone density of the vertebrae and hip (the bones most susceptible to clinical fractures), using very low doses of radiation.

Cons
Slower scan time than other methods.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
References in periodicals archive ?
The dual-photon absorptiometry (DPA) technique extended BMD measurement to all parts of the body, including the spine and proximal femur.
Single-photon absorptiometry measurements in the forearm, and both dual-photon absorptiometry and quantitative computed tomography in the spine indicate a premenopausal loss of bone mass [1-3] that becomes slightly more accentuated in the perimenopausal period [4].
Anterior-posterior spine measurements with dual energy techniques [14] (dual-photon absorptiometry [DPA] and dual-energy x-ray absorptiometry [DEXA] are not as sensitive as QCT for the detection of osteopenia because they measure the entire vertebral body (cortical bone and trabecular bone) plus the posterior elements.
* Single- or dual-photon absorptiometry (SPA or DPA)
Dual-photon absorptiometry (DPA) of the lumbar spine was performed using a Novo BMC-Lab 22a densitometer with a gadolinium source.
[20] Much of the controversy has centered on the suitability of single- vs dual-photon absorptiometry and whether one should screen all women.
Total body bone mineral and lean body mass by dual-photon absorptiometry. Calcif Tissue Int.
These compartments once were determined separately using different techniques [6-8], but now they all can be studied using the same technique since technological developments in dual-photon absorptiometry (DPA), originally used for bone density studies [9, 10], now permit evaluation of TBBM, FFM, and F.