MicroXCT-200 (Carl Zeiss X-ray Microscopy):
The MicroXCT-200 CT specimen scanner provides ultra high-resolution imaging in the 1.5 – 20 µm range. The high contrast 3D images allow visualization and analysis of fine structural features within samples as large as several cm. Both biological and non-biological samples may be imaged with this scanner. The MicroXCT-200 consists of a 90 kV micro-focused source; CCD camera; multiple optics to switch between resolution imaging modes; phase enhanced detectors; and a precision stage resting on a granite base. Three different detectors (based on a scintillator coupled to an optical light objective), with different magnification factors (4X, 10x and 20X), are installed on a software-controlled turret. X-rays are transmitted through the specimen and converted into optical photons by the scintillator. These optical photons are magnified by the optical light objective and captured by the CCD camera. The final resolution ranges from 1.5 µm to 20 µm depending on the magnification factor, with a sample field of view ranging from 1 – 50 mm.