USA flag logo/image

An Official Website of the United States Government

Spatially Modulated Radiographic Illuminator

Award Information

Department of Health and Human Services
Award ID:
Program Year/Program:
1993 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Advanced Technologies/Laboratories Intl
Advanced Technologies/Lab Intl 20010 Century Blvd, Ste 500 Germantown, MD 20874 0111
View profile »
Woman-Owned: Yes
Minority-Owned: Yes
HUBZone-Owned: No
Phase 1
Fiscal Year: 1993
Title: Spatially Modulated Radiographic Illuminator
Agency: HHS
Contract: N/A
Award Amount: $50,000.00


The objective of this project is to develop a system for the optimized viewing of medical x-ray film. Illuminators currently used to view radiographs have a fixed-area, spatially uniform light output. This allows extraneous light to degrade visual performance and limits the viewable film density range to the dynamic range of the eye at a given adaptation level. The proposed viewing system will provide spatially modulated illumination to reduce the range of light intensities transmitted through and around the x-ray image; thus, it will lessen optical glare, improve photoreceptor sensitivity and expand viewable film latitude without compromising contrast or resolution. Specifically, this approach to film viewing should reduce significant false-negative rate in detecting pulmonary nodules on chest films. To achieve these goals, the project will aim to develop 1) a large-area, flat-panel spatial light modulator, 2) a variable light source with sufficient intensity to enable photopic viewing of radiographs over a wide density range, and 3) a mechanism to provide automatic illumination control. No current technological embodiment can provide large-area spatial modulation of light at sufficient intensity for reading radiographs.

Principal Investigator:

Zvi Yaniv

Business Contact:

Small Business Information at Submission:

Advanced Technology Materials
31275 Northwestern Highway Farmington Hills, MI 48334

Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No