quantitative computed tomography qct

... Algorithms for Computed Tomography Gabor T Herman University of Pennsylvania 26.1 26.1 Introduction 26.2 The Reconstruction ... Maximization (EM) 26.9 Comparison of the Performance of Algorithms References Introduction Computed tomography is the process of reconstructing the interiors of objects from data collected based ... measure the radiation transmitted through or emitted from the structure at a number of points Computed tomography (CT) is the process of obtaining from these measurements the distribution of the...

Ngày tải lên: 16/12/2013, 04:15

Ngày tải lên: 09/02/2014, 22:56

... neighboring bone rotation on the various measurements of patellar tilting, through an axial computed tomography study, to help selecting a better measurement for patella tilting and implement ... analysis, comprising a total of 45 subject knees CT imaging All patients were examined with axial computed tomography on both knees in extension, with the quadriceps relaxed as well as contracted according ... FR: femoral rotation; and TR: tibial rotation and minus as internal rotation) As thus axial computed tomography images of patients with PFPS were analyzed to explore the relationship between the...

Ngày tải lên: 20/06/2014, 01:20

... three-dimensional computed tomography scapulas while in the cadaveric group was of 2,35 (ranging from 2,00 to 2,73) The "shortneck" group represented the 41,82% in the three-dimensional computed tomography ... three-dimensional computed tomography and cadaveric scapulas Mean index of length in the "short-neck" group was of 4,80 (ranging from 4,22 to 5,41) for the three-dimensional computed tomography scapulas ... computed tomography scapulas while in the cadaveric group were of 50° (ranging from 49,25° to 55°) Mean type II angle was of 64° (ranging from 60° to 70°) for the three-dimensional computed tomography...

Ngày tải lên: 20/06/2014, 01:20

... (n) 28 II III 24 26 26 IV 5 MDCT: multi-detector computed tomography List of abbreviations CT: Computed Tomography; MDCT: Multi-Detector Computed Tomography; MPR: Multiplanar Reformatted; MIP: ... masses were reported [13], the present study aimed to evaluate the accuracy of 64-multidetector computed tomography in detection, differentiation and staging of adnexal tumors Methods Study design ... mass 89.2% PPV: Positive predictive value, NPV: Negative predictive value MDCT: multi-detector computed tomography Page of Gatreh-Samani et al Journal of Ovarian Research 2011, 4:15 http://www.ovarianresearch.com/content/4/1/15...

Ngày tải lên: 20/06/2014, 08:20

... abdominal helical computed tomography on the rate of negative appendicitis J Emerg Med 2008, 34:7-11 Gwynn LK: The diagnosis of acute appendicitis: clinical assessment versus computed tomography evaluation ... staged ultrasound and computed tomography pathway Acad Emerg Med 2009, 16:1258-65 28 Hlibczuk V, Dattaro JA, Jin Z, Falzon L, Brown MD: Diagnostic accuracy of noncontrast computed tomography for appendicitis ... Ann Emerg Med 2008, 52:301-3 Terasawa T, Blackmore CC, Bent S, Kohlwes RJ: Systematic review: computed tomography and ultrasonography to detect acute appendicitis in adults and adolescents Ann Intern...

Ngày tải lên: 20/06/2014, 23:20

... my pleasure to present the book titled Computed Tomography - Special Applications” Computed tomography (CT) and in particular multi-detector-row computed tomography (MDCT), is a powerful non-invasive ... distress syndrome: lessons from computed tomography of the whole lung Crit Care Med;31(4 Suppl):S285-295 Lescot T, Bonnet MP, Zouaoui A, et al.(2005) A quantitative computed tomography assessment of ... goal of this review is to describe the use of quantitative CT scan results in non-contused and contused areas in TBI patients Quantitative computed tomography Since its development in the 1970’s,...

Ngày tải lên: 27/06/2014, 17:20

... my pleasure to present the book titled Computed Tomography - Special Applications” Computed tomography (CT) and in particular multi-detector-row computed tomography (MDCT), is a powerful non-invasive ... distress syndrome: lessons from computed tomography of the whole lung Crit Care Med;31(4 Suppl):S285-295 Lescot T, Bonnet MP, Zouaoui A, et al.(2005) A quantitative computed tomography assessment of ... goal of this review is to describe the use of quantitative CT scan results in non-contused and contused areas in TBI patients Quantitative computed tomography Since its development in the 1970’s,...

Ngày tải lên: 28/06/2014, 00:20

... III Pocket Atlas of Sectional Anatomy Computed Tomography and Magnetic Resonance Imaging Volume II Thorax, Heart, Abdomen, and Pelvis Torsten ... diagnosis is no exception Technical improvements guarantee further developments in diagnosis Computed tomography (CT) and magnetic resonance imaging (MRI) have attained a recognized value in the...

Ngày tải lên: 29/06/2014, 09:21

Ngày tải lên: 29/06/2014, 09:21

Ngày tải lên: 05/08/2014, 15:21

Ngày tải lên: 05/08/2014, 20:21

... multidetector row computed tomography (MDCT) and compared the parameters with those of conventional pigs In recent years, major technological improvements have been achieved in computed tomography (CT) ... detected by multidetector row computed tomography (MDCT) and echocardiography in conventional pigs and micropigs EF (%) MDCT (n = 3) Fig Left ventriculogram by computerized tomography (A: end-systolic ... Left ventriculogram by computerized tomography (A: end-systolic phase, B: end-diastolic phase) in a conventional pig Fig Coronary circulation by computerized tomography in a conventional pig (A)...

Ngày tải lên: 07/08/2014, 20:23

... liver and cell systems used to date have been much smaller than the normal human liver [14,28] Computed tomography (CT) is frequently used to evaluate graft size preoperatively in both potential ... used for xenotransplantation, as well as individual patients Fig (A) Contrast enhanced axial computed tomography (CT) images show relatively homogenous enhancement at the level of hepatic vein ... volume calculation (C) Table Liver parameters in micropigs as measured by multi-detector row computed tomography No Sex Weight (Kg) Volume of liver (ml) Volume of Rt lobe liver (ml) Diameter of...

Ngày tải lên: 07/08/2014, 23:22

... emission /computed tomography; 18F-FDG: 18F-fluorodeoxyglucose; PET/CT: positron emission /computed tomography; CEA: carcinoembryonic antigen; CA19-9: carbohydrate antigen 19-9; CT: computed tomography; ... provide, is Figure 18F-fluorodeoxyglucose positron emission /computed tomography 18F-fluorodeoxyglucose positron emission /computed tomography demonstrated increased 18F-fluorodeoxyglucose uptake ... increased 18FFDG uptake (maximum standardized uptake value: 3.1) Figure Abdominal computed tomography scan Abdominal computed tomography scan on November 2008 revealed a small nodule in the abdominal...

Ngày tải lên: 09/08/2014, 01:24

... moderate in one case, severe in three patients and no hydrocephalus was present in one case (2) Computed tomography angiography (CTA) was applied to detect tumor staining, venous complex (VC, which ... Neurooncol 2010, 96(2):143-9 doi:10.1186/1477-7819-9-64 Cite this article as: Li et al.: Use of 3D -computed tomography angiography for planning the surgical removal of pineal region meningiomas using ... Neurosurgery 2002, 51(4 Suppl): S53-120 Suzuki Y, Nakajima M, Ikeda H, Abe T: Three-dimensional computed tomography angiography of the galenic system for the occipital transtentorial approach Neurol...

Ngày tải lên: 09/08/2014, 02:20

... documented in both planes (i) Radiography reveals no erosions at the corresponding sites CT, computed tomography; MCP, metacarpophalangeal; MRI, magneticresonance imaging; RA, rheumatoid arthritis; ... impression of the presence of anerosion, with the same configuration as on CT and radiography CT, computed tomography; MCP, metacarpophalangeal; MRI, magnetic resonance imaging; RA, rheumatoid arthritis; ... these modalities reflects true loss of calcified tissue, that is, are true erosions[26,27] Computed tomography (CT) is a tomographic radiographic imaging method that visualizes calcified tissue...

Ngày tải lên: 09/08/2014, 08:22

... work is properly cited Rib fracture after stereotactic radiotherapy on follow-up thin-section computed tomography in 177 primary lung cancer patients *Atsushi Nambu1, Hiroshi Onishi1, Shinichi Aoki1, ... imaging findings are not clarified So this study aimed to fully characterize the findings on computed tomography (CT), appearance time and frequency of chest wall injury after stereotactic radiotherapy ... paper References Uematsu M, Shioda A, Suda A, Fukui T, Ozeki Y, Hama Y, Wong JR, Kusano S: Computed tomography- guided frameless stereotactic radiotherapy for stage I non-small cell lung cancer:...

Ngày tải lên: 09/08/2014, 09:21

... never explicitly defined Currently, breast cancer radiotherapy has gradually shifted towards computed tomography (CT)-guided treatment planning This enabled the application of new techniques such ... outside breast PTVCT ≥ 95% * 66 Gy outside boost PTVCT PTV: planning target volume; PTVCT: computed tomography (CT)-based PTV Data presented as mean values, with ranges in parentheses Organs ... volumes Representation of 95%-isodose (green) resulting from conventional breast beams and computed tomography (CT)-based clinical target volume (CTV) and planning target volume (PTV) Note the...

Ngày tải lên: 09/08/2014, 09:22

... the gross tumor volume (GTV) on each of the phases that constitute the four-dimensional (4-D) computed tomography (CT) image data set, followed by expansion of each GTV to account for microscopic ... IGTV, we computed the differences in IGTV between the all phases volume (IGTVAllPhases) and the three test volumes (IGTVMIP, IGTV2Phases, and IGTVMIP-Modified) For each pair of volumes, we computed ... Vedam SS, Keall PJ, Kini VR, Mostafavi H, Shukla HP, Mohan R: Acquiring a four-dimensional computed tomography dataset using an external respiratory signal Phys Med Biol 2003, 48:45-62 Keall...

Ngày tải lên: 09/08/2014, 09:22