Sporadic absorption tomography using a conical shell X-ray beam

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

X-ray absorption tomography employing a conical shell beam.

We demonstrate depth-resolved absorption imaging by scanning an object through a conical shell of X-rays. We measure ring shaped projections and apply tomosynthesis to extract optical sections at different axial focal plane positions. Three-dimensional objects have been imaged to validate our theoretical treatment. The novel principle of our method is scalable with respect to both scan size and...

متن کامل

X-ray luminescence computed tomography using a focused x-ray beam.

Due to the low x-ray photon utilization efficiency and low measurement sensitivity of the electron multiplying charge coupled device camera setup, the collimator-based narrow beam x-ray luminescence computed tomography (XLCT) usually requires a long measurement time. We, for the first time, report a focused x-ray beam-based XLCT imaging system with measurements by a single optical fiber bundle ...

متن کامل

X–ray absorption, phase and dark–field tomography through a beam tracking approach

We present a development of the beam-tracking approach that allows its implementation in computed tomography. One absorbing mask placed before the sample and a high resolution detector are used to track variations in the beam intensity distribution caused by the sample. Absorption, refraction, and dark-field are retrieved through a multi-Gaussian interpolation of the beam. Standard filtered bac...

متن کامل

Inner-shell 1s - 2p Soft X-ray Absorption Lines

The HULLAC atomic code is used to compute wavelengths and oscillator strengths for the 1s np inner-shell absorption lines in Li-like to F-like ions of neon, magnesium, aluminum, silicon, sulfur, argon, calcium, and iron. Many of these lines are expected to be observed in Chandra and XMM-Newton highresolution X-ray spectra of active galaxies. The new atomic data are incorporated in the ION code ...

متن کامل

X-ray acoustic computed tomography with pulsed x-ray beam from a medical linear accelerator.

PURPOSE The feasibility of medical imaging using a medical linear accelerator to generate acoustic waves is investigated. This modality, x-ray acoustic computed tomography (XACT), has the potential to enable deeper tissue penetration in tissue than photoacoustic tomography via laser excitation. METHODS Short pulsed (μs-range) 10 MV x-ray beams with dose-rate of approximately 30 Gy∕min were ge...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Optics Express

سال: 2017

ISSN: 1094-4087

DOI: 10.1364/oe.25.033029