X-ray phase-contrast imaging is a promising approach for improving soft-tissue contrast and lowering radiation dose in biomedical applications. While current tabletop imaging systems adapt to common x-ray tubes and large-area detectors by employing absorptive elements such as absorption gratings or monolithic crystals to filter the beam, we developed nanometric phase gratings which enable table...

Crystal-based X-ray interferometry (CXI) detects phase shifts by using the superposition of waves, and its sensitivity is highest among other phase-detecting methods. Therefore, phase-contrast imaging (PCXI) CXI has density resolution PCXI methods enables fine, non-destructive observation with a below sub-mg/cm3. It thus been applied in wide range fields, including biology, medicine, geology, i...

Traumatic spinal epidural hematoma (TSEH) is a neurosurgical emergency which is considered as one of the rare causes of back pain. The onset of symptoms presentation can vary especially following a trauma. Here, we report a case where a young girl had a trivial fall and presented symptoms of back pain three days later. She developed abrupt onset of lower limb weakness during her stay in the eme...

-The factors influencing imaging quality of industrial digital radiographic imaging system are analyzed detailedly. This imaging system is a new type industrial digital radiographic imaging system developed by author, The structure of ray conversion screen and its non-uniformity, the discordance analysis of scientific grade CCD and vignetting effect of the optical system are introduced. The cor...

We discuss standard X-ray-imaging techniques. Phase-imaging methods and a new class of nano-focus and nanoresolution laboratory systems offer new opportunities in true laboratory-based X-ray microtomography with a host of possible applications that have mainly been demonstrated only at synchrotron sources. Notwithstanding these advances, the diffraction limit for X-ray-imaging methods is a long...

The compositions of diverse planetary bodies are of fundamental interest to planetary science, providing clues to the formation and evolutionary history of the target bodies and the solar system as a whole. Utilizing the X-ray fluorescence unique to each atomic element, X-ray imaging spectroscopy is a powerful diagnostic tool of the chemical and mineralogical compositions of diverse planetary b...

Terahertz (THz) science will profoundly impact biotechnology. It has tremendous potential for applications in imaging, medical diagnosis, health monitoring, environmental control and chemical and biological identification. THz research will become one of the most promising research areas in the 21st century for transformational advances in imaging, as well as in other interdisciplinary fields. ...

BACKGROUND To assess the accuracy and precision of a fully integrated pilot installation of stereoscopic X-ray imaging and kV-CBCT for automatic couch positioning in stereotactic radiotherapy of intracranial tumors. Positioning errors as detected by stereoscopic X-ray imaging are compared to those by kV-CBCT (i.e. the accuracy of the new method is verified by the established method), and repeat...

BACKGROUND To observe micro lesions on the cartilage of the rabbit femoral head using phase-contrast imaging with synchrotron hard X-ray and to prove that this method can be useful in the study of the degeneration of cartilage. METHODS New Zealand white rabbits were used in a micro lesion model of rabbit femoral head cartilage. Bilateral femoral heads were excised from rabbits, and micro lesi...