CONSTITUTION:When an image having a slice range of the thickness of 5mm is formed, having a position X0 as center, by using a CT scanner 1, a table 7 is shifted to a position (X0-1.25mm), and the X-ray irradiated from an X-ray tube 5 is throttled, and the slice thickness is ...
Purpose: To quantitatively compare noise texture across computed tomography(CT)scanners from different manufacturers using the noise power spectrum (NPS). ... JB Solomon,O Christianson,E Samei - 《Medical Physics》 被引量: 57发表: 2012年 Multiple beam computed tomography (CT) scanner image scanner...
All scans were performed on a 320-row-detector CT scanner (Aquilion One GENESIS Edition, Canon Medical Systems Corporation, Japan). The scan was performed from the distal abdominal aorta to the toes in a craniocaudal direction. Ninety milliliters of iodinated contrast agent (370 mgI/mL, Iopromi...
Examples of the modifications are shown using the AS&E CT scanner. The method convolves or deconvolves the CT image with an appropriate point spread function. Since the filter-function modifications are done conceptually in real space rather than in frequency space, the details of the modifications...
First Clinical Experience with Integrated Whole-Body PET/MR: Comparison to PET/CT in Patients with Oncologic Diagnoses The recently introduced first integrated whole-body PET/MR scanner allows simultaneous acquisition of PET and MRI data in humans and, thus, may offer new o... A Drzezga,M ...
JH Yanof,PH Klahr,L O'Donnell 被引量: 123 摘要: A frameless stereotactic CT scanner includes a virtual needle display for planning image-guided interventional procedures. The virtual needle is useful for planning the introduction of an object such as a biopsy probe into a patient at an entry...
From this framework we derive iterative convolution backprojection algorithms that make no restrictions on the location of missing line integrals. All available a priori information is incorporated by constraint operators. The algorithm has been implemented on a commercial CT scanner. We present examples...
PROBLEM TO BE SOLVED: To effectively reduce or prevent the bend of a scanning line in an optical scanner including a plastic lens formed by die forming in a scanning image-formation optical system.;SOLUTION: A lens 404 constituting at least one part of the scanning image- formation optical sy...
We have developed an X-ray microtomography scanner which uses the time-delay integration method of imaging with a CCD detector to average the characteristics of all the detector elements in each linear projection together. This has the added advantage of allowing specimens which are larger than the...
PROBLEM TO BE SOLVED: To prevent a read image from causing 'out of focus' and 'black level deformation', even if a floated part such as a file margin has a thick book cast with its face down with respect to a flat bed type scanner employ... K Toshiyuki,小林 俊之 被引量: 0发表:...