OBJECTIVE To characterize the performance of the Biograph mCT PET/CT TrueV scanner with time of flight (TOF) and point spread function (PSF) modeling. MATERIAL AND METHODS The PET/CT scanner combines a 64-slice CT and PET scanner that incorporates in the reconstruction the TOF and PSF information. PET operating characteristics were evaluated according to the standard NEMA NU 2-2007, expanding...

The investigation and treatment of coronary disease impose a significant burden on health service resources. Catheter coronary angiography remains the gold standard for the investigation of suspected coronary disease. Given the invasive nature and high costs of invasive coronary angiography, there is an increased interest in noninvasive methods to image the lumen of the coronary arteries. Recen...

From the time CT-scanning was introduced in oil and gas industry, its use could be divided into SCAL routine type applications. The first involves flowing fluids through cores, whereas second scanning, mainly whole their native (preserved or unpreserved) state. For core CT-scanning, there has been a constant shift from qualitative to quantitative analysis. size of cores is ideal for scanning th...

This work presents a methodology for the automatic detection of flaws in polymer insulators using three-dimensional industrial computed tomography (CT), as well as results obtained in the context of power distribution networks. The CT slices were reconstructed using 180 digital radiographs (projections) acquired by a high resolution system (pixel dimension of 50 μm × 50 μm, a-Si). For the recon...

Cardiac MDCT is here to stay. And, it is more than just imaging coronary arteries. Understanding the differences in and the benefits of one CT scanner from another will help you to optimize the capabilities of the scanner, but requires a basic understanding of the MDCT imaging physics.This review provides key information needed to understand the differences in the types of MDCT scanners, from 6...

BACKGROUND The aim of this study was to develop and validate an automated method for extracting forward stroke volume (FSV) using indicator dilution theory directly from dynamic positron emission tomography (PET) studies for two different tracers and scanners. METHODS 35 subjects underwent a dynamic (11)C-acetate PET scan on a Siemens Biograph TruePoint-64 PET/CT (scanner I). In addition, 10 ...

BACKGROUND AND PURPOSE Recently introduced 320-detector row CT enables whole brain perfusion imaging compared to a limited scanning area in 64-detector row CT. Our aim was to evaluate patient radiation exposure in comprehensive stroke imaging by using multidetector row CT consisting of standard CT of the head, CTA of cerebral and cervical vessels, and CTP. MATERIAL AND METHODS Organ doses wer...

OBJECTIVE To improve image and diagnostic quality in dynamic CT myocardial perfusion imaging (MPI) by using motion compensation and a spatio-temporal filter. METHODS Dynamic CT MPI was performed using a 256-slice multidetector computed tomography scanner (MDCT). Data from two different patients-with and without myocardial perfusion defects-were evaluated to illustrate potential improvements f...

  Combined PET/CT scanners now play a major role in medicine for in vivo imaging in oncology, cardiology, neurology, and psychiatry. As the performance of a scanner depends not only on the scintillating material but also on the scanner design, with regards to the advent of newer scanners, there is a need to optimize acquisition protocols as well as to compare scanner ...

This study focused on analysing the effectiveness of some CT scanner models; in this concern, selected Siemens Medical Scanner, Philip and GE Discovery STE. gathered primary data, which was scan report a patient, used by Scanner. presented patient’s scanning for five years, allowed comparative among these three machines. found that Scanner is less reliable due to its noise-reduction technique, ...