MICRO-CT SCANNING

Scanner

One of our in-house micro-CT scanners is surrounded by a lead-lined enclosure, which sits on a floating table. The x-ray source (to left of enclosure) is connected to the enclosure via a lead-lined tube.

Scanner Imaging Characteristics

Glass microspheres suspended in agar gel scanned and a single tomographic image through these microspheres shown on left. The CT image brightness profiles through each microsphere is shown in the right panels.

CRYOGENIC SCANNING

Radiolucent Dewar for Micro-CT at Cryogenic Temperatures

Schematic of the cryogenic vessel (left) and photo of vessel (right). The specimen is enclosed in a double walled beryllium vessel (the walls separated by a vacuum) which is continuously purged with nitrogen gas that has "boiled" off liquid nitrogen. The x-ray beam passes through beryllium windows in the vessels. A seal separates the specimen from the rotational stage so that the specimen remains frozen and no moisture can condense on or in the vessel.

Iliac Crest Biopsy Scanned at - 80° F

Volume rendered display of bone biopsy with cortical bone on right edge and cancellous bone in left two thirds of image.

X-RAY OPTICS

Schematic

Schematic of a poly capillary focussing x-ray optic. The hollow, 25