Visualization and quantitation of coronary arteries using multiple-view energy subtraction digital radiography. Interim report 30 September 1983-29 September 1984

Technical Report · Mon Aug 27 00:00:00 EDT 1984

OSTI ID:6304031

Macovski, A

The authors have studied a general approach to the imaging of coronary arteries using minimally invasive intravenous administration of contrast material. Using conventional DSA techniques this visualization would fail due to motion, low SNR, and intervening iodinated structures. The authors have implemented the digital fluoroscopy system with a rotating gantry and tested it on phantoms. Evaluation of stenosis in coronary arteries is difficult with low SNR images. The authors have studied and implemented a vessel outlining system using a global estimation procedure. The most recent approach has significantly improved computational efficiency. The processing of multiple-energy data to eliminate the moving soft tissue results in a noise penalty. The authors have studied and implemented an approach to restore the original SNR by deriving the high frequency components from a non-selective image. The authors have also implemented a scatter-cancellation system for minimizing this source of error.

• Research Organization: Stanford Univ., CA (USA)
• OSTI ID: 6304031
• Report Number(s): PB-85-100543/XAD
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
CORONARIES
BIOMEDICAL RADIOGRAPHY
CONTRAST MEDIA
DETECTION
DIGITAL SYSTEMS
SIGNAL-TO-NOISE RATIO
ARTERIES
BLOOD VESSELS
BODY
CARDIOVASCULAR SYSTEM
DIAGNOSTIC TECHNIQUES
MEDICINE
NUCLEAR MEDICINE
ORGANS
RADIOLOGY
550602* - Medicine- External Radiation in Diagnostics- (1980-)