Seal Voids


Time Domain Imaging (TDI)™
Utilizes an echo (amplitude & polarity) arrival ‘time’ as a reference, such as standard A-Scan, B-Scan and C-Mode type images.

Seal Voids

Blister Pack Seal Voiding, Through Transmission - Application Note 800

Seal Voids

Sample & Method

This blister pack was imaged using the THRU-Scan.


The blue areas are locations of signal loss, representing voids which block transmission of the ultrasound through the sample. As these voids become larger, they connect and threaten the integrity of the package by providing a leak path. This seal is nearly compromised.