quantitative computed tomography


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quantitative computed tomography (QCT)

a type of computed tomography that calculates and displays bone density in three dimensions. QCT is used mainly for lumbar spine studies but can also be applied in hip and peripheral bone mineral evaluations.

quantitative computed tomography

A type of CT scan used to measure density of bone in the vertebrae or in the extremities (peripheral QCT), usually the wrist.

Cons
QCT is rarely used because it is expensive, results in higher radiation exposure, and is less accurate than DEXA, P-DEXA or DPA.

quantitative computed tomography

Abbreviation: QCT
A method for determining the bone mineral density of a three-dimensional bony specimen, e.g., in the vertebral bodies or the forearms. It is used in the diagnosis of osteopenia and osteoporosis.
See also: tomography
References in periodicals archive ?
Quantitative computed tomography (QCT) of the forearm using general purpose spiral whole-body CT scanners: accuracy, precision and comparison with dual-energy X-ray absorptiometry (DXA).
Peripheral quantitative computed tomography in children and adolescents: the 2007 ISCD Pediatric Official Positions.
ACR Practice Guideline for the Performance of Quantitative Computed Tomography (QCT) Bone Densitometry (Resolution 33).
ACR-SPR-SSR Practice parameter for the performance of quantitative computed tomography (qct) bone densitometry (Resolution 39).
Influence of anthropometric parameters and bone size on bone mineral density using volumetric quantitative computed tomography and dual X-ray absorptiometry at the hip.
Muscle and bone adaptations after treadmill training in incomplete Spinal Cord Injury: a case study using peripheral Quantitative Computed Tomography.
Role of peripheral quantitative computed tomography in identifying disuse osteoporosis in paraplegia.
However, when perimenopausal women are separated from premenopausal women, there are evident differences between these groups: in our study, peripheral quantitative computed tomography demonstrated a decrease in trabecular bone density in perimenopausal women.
First experience with peripheral quantitative computed tomography (pQCT) in beagle dogs.
Abbreviations: ANOVA = analysis of variance, ASIA = American Spinal Injury Association, BMC = bone mineral content, BMI = body mass index, DEXA = dual-energy X-ray absorptiometry, DOP = duration of paralysis, FM = fat mass, LM = lean mass, NLOI = neurological level of injury, pQCT = peripheral quantitative computed tomography, SCI = spinal cord injury, SD = standard deviation, SNS = sympathetic nervous system, SSI = stress-strain index, [SSI.

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