Quantification of calcium in solitary pulmonary nodules using single- and dual-energy CT

Journal Article · Sun Oct 31 23:00:00 EST 1982 · Radiology; (United States)

DOI:https://doi.org/10.1148/radiology.145.2.7134457· OSTI ID:6374657

Cann, C E; Gamsu, G; Birnberg, F A; Webb, W R

Separation of benign from malignant solitary pulmonary nodules by computed tomography (CT) is based on two assumptions: (a) those that are calcified are benign, and (b) high CT numbers reflect calcium deposits. The authors used dual-energy CT to quantify the minimum detectable calcium content in simulated nodules independent of absolute CT number and to separate high CT numbers due to calcium from those due to high-density organic material. A mineral concentration of 20 mg/cm/sup 3/ was detectable with this method. Dual-energy CT may be a more accurate method of detecting calcium in solitary pulmonary nodules than single-energy CT.

• Research Organization: Univ. of California, San Francisco
• OSTI ID: 6374657
• Journal Information: Radiology; (United States), Journal Name: Radiology; (United States) Vol. 145:2; ISSN RADLA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALKALINE EARTH METALS
BODY
BODY AREAS
CALCINOSIS
CALCIUM
CHEST
COMPUTERIZED TOMOGRAPHY
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
ELEMENTS
LUNGS
METALS
MOCKUP
ORGANS
PATHOLOGICAL CHANGES
PHANTOMS
QUANTITY RATIO
RESPIRATORY SYSTEM
STRUCTURAL MODELS
TOMOGRAPHY