low-dose computed tomography
Specialized CT imaging technique using reduced radiation exposure, primarily used for lung cancer screening in high-risk populations.
Full Definition
Low-dose computed tomography is a modified CT scanning protocol that uses significantly lower radiation doses than standard CT examinations while maintaining adequate image quality for detecting lung nodules. This technique is the current standard for lung cancer screening in eligible high-risk individuals, typically those aged 50-80 with significant smoking history. LDCT screening programs require careful patient selection, standardized reporting systems, and coordinated follow-up protocols to manage detected abnormalities appropriately.
Usage
Usage note: Distinguish from standard-dose CT; emphasize the 'low-dose' qualifier in all references.
In Context
- "The smoking cessation counselor discussed low-dose computed tomography screening eligibility during the patient visit." — Clinical note
- "Annual low-dose computed tomography is recommended for patients meeting USPSTF criteria." — Screening guideline document