cardiac imaging using ultrasound

... Ultrasound Imaging Using Coded Signals Thanassis Misaridis Center for Fast Ultrasound Imaging Technical University of Denmark August 2001 SUBMITTED ... on SNR improvement methods in STA imaging 9.5 Proposed STA coded imaging using Hadamard and FM space-time encoding 9.6 STA imaging with double frame rate using orthogonal FM signals ... iv Preface The Ph.D project entitled Ultrasound imaging using coded signals” has been part of the research activities of the Center For Fast Ultrasound Imaging (CFU), directed by my advisor...

Ngày tải lên: 24/08/2014, 17:52

... brain using magnetic resonance imaging Med Imaging IEEE Trans 13(3), 470–481 (1994) doi:10.1109/42.310878 H Maitre, F Schmitt, JP Crettez, Y Wu, JY Hardeberg, in IS&T and SID’s 4th Color Imaging ... to the system 3D imaging in itself is an interesting area of study, and could be a large part of the study This paper, therefore, focuses mainly on multispectral imaging, and 3D imaging has not ... Microscopic and Mesoscopic Spectral Bio -Imaging 200–206 (1996) RS Berns, in CIM’98: Colour Imaging in Multimedia Challenges for Color Science in Multimedia Imaging Derby, UK, pp 123–133 (1998) RS...

Ngày tải lên: 21/06/2014, 00:20

... that the above discussion is based on ISAR imaging In ISAR imaging for a moving target, the target size is much smaller than the terrain scale of SAR imaging Thus, we can sample only one point ... suggestions 10 −5 Range (m) Figure 10: Imaging result using the proposed clutter cancellation method, where the clutter scatterers are randomly moving in the imaging process within (−1 m, m) −10 ... Cross-range (m) −5 10 −5 Range (m) Figure 11: Imaging result using the proposed clutter cancellation method, where the clutter scatterers are randomly moving in the imaging process within (−5 m, m) the...

Ngày tải lên: 22/06/2014, 23:20

... imaging technique The element migration problems that had blighted the early biomedical applications of the ion microanalyzer are largely avoided by an approach of imaging labeled molecules using ... spectrometer transmission can approach 100% Molecular ion imaging Several groups have pursued the idea of obtaining molecular image information using sputtered molecular ions themselves to form images ... prototype instrument became the core of the National Resource for Imaging Mass Spectrometry at Harvard As with the direct molecular imaging study of Ostrowski et al [9], the work now emerging from...

Ngày tải lên: 06/08/2014, 18:21

... (-8°C) As the temperature was increased, ultrasound emission gradually diminished, while upon thawing we detected only a few counts Fig presents the behavior of ultrasound emissions in Araucaria subjected ... the sensor intermittently, switching it on only for out of 10 The acoustic emissions were counted using an instrument similar to the one described by Sandford and Grace (1985), slightly modified ... thermocouple sensors (type T) connected to a strip chart recorder Results Fig 1, the typical behavior of ultrasound pulses as a function of stem temperature In in Eucalyptus is reported Before ice for-...

Ngày tải lên: 09/08/2014, 04:20

... animal studies The NIRF imaging technology has recently been extended to arthritic studies In vivo NIRF imaging of arthritis in experimental animals was demonstrated using a protease-sensitive ... mice serum R311 In vivo NIRF reflectance imaging and lesion assessment All animals were imaged in a prone position using a homebuilt NIRF reflectance imaging system, which has been described ... activated macrophages in adjuvant-induced arthritis mice models using gamma scintigraphy as the imaging modality [7] In contrast, optical imaging is a noninvasive method and does not depend on radiolabeled...

Ngày tải lên: 09/08/2014, 06:22

... sensitivity of the preoperative detection of ELCs Coronal imaging alone was not significantly better than axial imaging alone The coronal imaging helped with decisions on the extent of the resection ... necessary for accurate examination of ELCs HRCT is traditionally performed by axial imaging Although axial imaging has the advantage of the central and peripheral areas being observed simultaneously, ... directional image might be necessary to overcome the disadvantages of traditional imaging methods The introduction of coronal imaging might provide more accurate examination of ELCs in cases of primary...

Ngày tải lên: 10/08/2014, 09:21

... Editorial II: ultrasound imaging by anaesthetists: training and accreditation issues Br J Anaesth 2006, 96:414417 Chapman GA, Johnson D, Bodenham AR: Visualisation of needle position using ultrasonography ... A: Ultrasound- guided infraclavicular axillary vein cannulation for central venous access Br J Anaesth 2004, 93:188-192 Sandhu NS, Sidhu DS: Mid arm approach to basilic and cephalic vein using ultrasound ... ultrasound- guided puncture of the femoral artery for interventional investigations Int J Cardiovasc Imaging 2004, 20: 363-368 Schwemmer U, Arzet HA, Trautner H, Rauch S, Roewer N, Greim CA: Ultrasound- guided...

Ngày tải lên: 13/08/2014, 03:20

... onset of cardiac arrest was only recorded in cases of witnessed cardiac arrest, and the estimated duration of cerebral anoxia was defined as the interval from collapse (presumed time of cardiac ... management of resuscitated cardiac arrest Among them, 10 patients (12%) sustained in-hospital cardiac arrest and were excluded Among the 71 patients who sustained an out-of-hospital cardiac arrest, 31 ... patients after cardiac arrest 11 12 13 14 15 16 17 18 References The Hypothermia after Cardiac Arrest Study Group: Mild therapeutic hypothermia to improve the neurologic outcome after cardiac arrest...

Ngày tải lên: 13/08/2014, 03:21

... D4, D2, serotonin type 2, norepinephrine, acetylcholine, and histamine [20-22] Functional brain imaging methods have been applied for studying schizophrenia These methods include positron emission ... [10], SPECT for studying CBF and neuroreceptors, and more recently, functional magnetic resonance imaging (fMRI) for measuring changes attributable to cerebral blood flow In this paper, after summarizing ... design and in reconstruction algorithms have substantially improved the quality of SPECT images using the Anger type gamma camera SPECT images can be merged with MRI and CT, creating a single...

Ngày tải lên: 02/11/2012, 11:12

... cloning process manually after using command to set up the server, and then you’ll learn how to start cloning on the clients C HA P TER USING UBUNTU SERVER FOR SYSTEM IMAGING Setting Up the Server ... easy, because the program will detect almost all settings automatically C HA P TER USING UBUNTU SERVER FOR SYSTEM IMAGING The first couple of questions ask you about the DNS configuration you want ... Once what you expected, and if it is, proceed with the configuration C HA P TER USING UBUNTU SERVER FOR SYSTEM IMAGING Listing 2-3 The DRBL Setup Program Shows What It Is Going to Configure Next...

Ngày tải lên: 19/10/2013, 02:20

... and a duty cycle associated with the therapeutic use of ultrasound rather than parameters used for imaging tissue In addition, Fahim had an ultrasound generator and transducer built by Whitewater ... prior to and during ultrasound treatment A ligature was used to prevent retraction of the testes into the abdomen by the cremaster muscle during treatment Ultrasound A therapeutic ultrasound generator ... against the bottom of the ultrasound chamber during treatment Ultrasound gel was used to coat the transducer face and the underside of the latex sheet used as the bottom of the ultrasound chamber to...

Ngày tải lên: 05/03/2014, 17:20

... FA: MR imaging- guided focused ultrasound surgery of fibroadenomas in the breast: a feasibility study Radiology 2001, 219:176-185 Chaussy C, Thuroff S: The status of high-intensity focused ultrasound ... Preliminary results of a phase I dose escalation clinical trial using focused ultrasound in the treatment of localised tumours Eur J Ultrasound 1999, 9:11-18 10 Wu F, Wang ZB, Chen WZ, Zou JZ, Bai ... experiments HIFU Exposure System In vivo HIFU treatment of tumor was carried out utilizing a B-mode ultrasound imaging- guided HIFU exposure system as reported in our previous study [20] (Figure 1A) A HIFU...

Ngày tải lên: 18/06/2014, 16:20

... performed on the largest subset of data to determine whether within assay variability would change when using the improved counting method We evaluated all of the tests performed on the lyophilized reference ... facilitates conservation of primary and secondary antibody stocks, which is an important factor when using http://www.virologyj.com/content/2/1/84 Figure complement separated by serum titers with Boxplots ... diluted 1:100 in Blotto, was incubated at 50 µl/well for h at room temperature Plaques were developed using 100 µl/well 3,3'diaminobenzidine HRP substrate (0.5 mg/ml DAB, 0.01% H2O2) prepared in DPBS...

Ngày tải lên: 19/06/2014, 08:20

... articular surface and early OA CT, ultrasound and MRI also provide a way to study the degeneration of AC and OA but these imaging techniques not have sufficient imaging resolution to study the microstructure ... images using a fibre optic laser scanning confocal microscope (FOCM, Optiscan Pty Ltd, Melbourne, Australia) Imaging techniques Prior to image acquisition, the FOCM was calibrated by using focal ... 5(C1) Discussion Using a 3D imaging technique, this study investigates the 3D collagen structure in the superficial zone in relation to the physiological status of AC Since the 3D imaging technique...

Ngày tải lên: 20/06/2014, 01:20

... performed on the largest subset of data to determine whether within assay variability would change when using the improved counting method We evaluated all of the tests performed on the lyophilized reference ... facilitates conservation of primary and secondary antibody stocks, which is an important factor when using http://www.virologyj.com/content/2/1/84 Figure complement separated by serum titers with Boxplots ... diluted 1:100 in Blotto, was incubated at 50 µl/well for h at room temperature Plaques were developed using 100 µl/well 3,3'diaminobenzidine HRP substrate (0.5 mg/ml DAB, 0.01% H2O2) prepared in DPBS...

Ngày tải lên: 20/06/2014, 04:20

... Successful treatment of severe accidental hypothermia with cardiac arrest for a long time using cardiopulmonary bypass – report of a case Keigo Sawamoto*1, Katsutoshi Tanno1, ... hypothermia associated with immersion is the cause of cardiac arrest due to drowning We here report the case of a patient who developed prolonged cardiac arrest because of drowning in the sea, a situation ... has been reported that active internal rewarming using CPB is useful for resuscitation in cases where severe accidental hypothermia develops into cardiac arrest [7] However, it is generally difficult...

Ngày tải lên: 20/06/2014, 20:20

... Decreased defluorination using the novel beta-cell imaging agent [18F]FEDTBZ-d4 in pigs examined by PET Mahabuba Jahan*†1, Olof Eriksson†2, ... USA) The tC18 Plus cartridge was activated using (1) ethanol [EtOH] (10 mL) and (2) water (10 mL, 18 M ) The SPE cartridge Sep-Pak QMA Light was activated using (1) potassium carbonate (K2CO3) solution ... performed using a Waters AcquityTM Ultra Performance LC system connected with a Micromass PremierTM Quadrupole Time-of-Flight [TOF] mass spectrometer (Waters Corporation) LC was performed using a...

Ngày tải lên: 20/06/2014, 21:20

... harmonic distortion during nonlinear ultrasound wave propagation Ultrasound Med Biol 2010, 36(10):1568-1580 Mills DM: Medical imaging with capacitive micromachined ultrasound transducer (cMUT) arrays ... attenuating full- wave model of ultrasound IEEE Trans Ultrason Ferroelectr Freq Control 2009, 56(3):474-488 Karamalis A, Wein W, Navab N: Fast ultrasound image simulation using the westervelt equation ... harmonic ultrasound field from arbitrary transducer geometries IEEE Ultrasonics Symposium 2005, 1964-1967 Yan X, Hamilton MF: Angular spectrum decomposition analysis of second harmonic ultrasound...

Ngày tải lên: 20/06/2014, 22:20

... continued for at least after injection of the tracer Imaging protocols The gated single-photon emission computed tomography (SPECT) studies were performed using a 2-day nongated stress/gated rest 99 mTc-sestamibi ... [9]; • Emory Cardiac Toolbox, Version 3.0, Emory University Medical Center (ECTb) [10]; • Cedars Quantitative Perfusion SPECT, Version 4.0, Cedars-Sinai Medical Center (QPS) [11] Using the database ... doi:10.1186/2191-219X-1-22 Cite this article as: Johansson et al.: Diagnostic evaluation of three cardiac software packages using a consecutive group of patients EJNMMI Research 2011 1:22 Authors’ contributions...

Ngày tải lên: 20/06/2014, 23:20