کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3380665 1220219 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase-sensitive X-ray imaging of synovial joints
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ایمونولوژی، آلرژی و روماتولوژی
پیش نمایش صفحه اول مقاله
Phase-sensitive X-ray imaging of synovial joints
چکیده انگلیسی

SummaryObjectiveTo test the efficacy of phase-sensitive X-ray imaging for intact synovial joints, whereby refraction effects, along with the attenuation of conventional radiography, can be exploited.DesignIntact cadaveric human knee joints were imaged, in the computed tomographic mode, using an analyzer-based X-ray system at the National Synchrotron Light Source, Brookhaven National Laboratory. A collimated fan beam of 51 keV X-rays was prepared by a silicon [1,1,1 reflection] double-crystal monochromator. The X-ray beam transmitted through the specimen was imaged after diffraction in the vertical plane by means of the analyzer crystal with the analyzer crystal tuned to its half-reflectivity point (6.5 μrad). A two-dimensional filtered backprojection (FBP) algorithm was used for reconstructing transverse slices of images.ResultsThe resulting images demonstrate simultaneous soft tissue and bone contrast at a level that has not been achieved previously. Identifiable structures include articular cartilage, cruciate ligaments, loose connective tissue, menisci, and chondrocalcinosis.ConclusionPhase-sensitive X-ray imaging using an analyzer-based system renders exceptionally high quality images of soft and hard tissues within synovial joints, with high contrast and resolution, and thus holds promise for the eventual clinical utility.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Osteoarthritis and Cartilage - Volume 17, Issue 9, September 2009, Pages 1193–1196
نویسندگان
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