An assessment of computerized tomography parameters in spinal bone mineralization determination

Miscellaneous · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6782465

Davis, J S

This research investigates the effects of changes in clinical parameters on measured bone density values using Quantitative Computed Tomography (QCT). These parameters include changes in patient size, geometry, internal anatomic conditions such as aortic calcifications and bowel gas, gantry slice position and angulation, spin-water bolus air gap distance, and field uniformity effects. It also assesses the reproducibility of the QCT technique on the G.E. 9800 CT scanner as well as the dose to radiosensitive tissues. The CIRS torso phantom was used in each of three size configurations to assess size effects. Mean bone mineral density (BMD) did not significantly vary with phantom size. Variations in patient cross-sectional geometry at constant volume were assessed using a custom manufactured body phantom.

• Research Organization: Florida Univ., Gainesville, FL (USA)
• OSTI ID: 6782465
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
SKELETAL DISEASES
DIAGNOSIS
VERTEBRAE
COMPUTERIZED TOMOGRAPHY
MINERALIZATION
PHANTOMS
RADIATION DOSES
SPINAL CORD
BODY
CENTRAL NERVOUS SYSTEM
DIAGNOSTIC TECHNIQUES
DISEASES
DOSES
MOCKUP
NERVOUS SYSTEM
ORGANS
SKELETON
STRUCTURAL MODELS
TOMOGRAPHY
655003* - Medical Physics- Dosimetry