Human coronary and peripheral arteries: on-line three-dimensional reconstruction from two-dimensional intravascular US scans. Work in progress.
To explore the feasibility of computer-based, on-line three-dimensional reconstruction, timed manual withdrawal (pullback) recordings were obtained with two-dimensional intravascular ultrasound (US) in 42 patients who underwent percutaneous revascularization. Three-dimensional processing was performed with commercial software that stacked serially obtained intravascular US scans and created a new set of data points in four steps: interpolation, segmentation, boundary encoding, and surface rendering. In all 42 patients, satisfactory on-line three-dimensional reconstruction was accomplished. In the first three patients, 70-90 seconds was required for three-dimensional processing, and display was limited to the sagittal format. In the next six patients, a sagittal display was rendered in 45-60 seconds, and on-line reconstruction in the cylindrical format was achieved within 30 additional seconds. In the last 33 patients, an unlimited number of sagittal views could be produced in 30-40 seconds, the extra time required for cylindrical display was shortened to 15-20 seconds, and a luminal cast display was added to the on-line menu.
Rosenfield
K
K
Department of Medicine, Elizabeth's Hospital, Tufts University School of Medicine, Boston, MA 02135.
Kaufman
J
J
Pieczek
A M
AM
Langevin
R E
RE
Palefski
P E
PE
Razvi
S A
SA
Isner
J M
JM
D000328:Adult; D000368:Aged; D001158:Arteries / Q000000981:diagnostic imaging* / Q000601:surgery; D003331:Coronary Vessels / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography