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Source: www.moreover.com --- 8 days ago
Daily Gleaner Aug 29 2008 11:11AM GMT ... Source: www.commercial-news.com --- 3 days ago
Provena United Samaritans Medical Center continues to upgrade the comprehensive care offered at its Regional Cancer Center, with the latest addition of a $650,000 16-slice CT Scanner. ... Source: www.johnogroat-journal.co.uk --- 9 days ago
A LONG time coming but well worth the wait! That was the verdict on the new £800,000 CT Scanner officially opened at Caithness General Hospital on Monday night. ... Source: www.westcoaster.ca --- 23 days ago
By Florentia Scott PORT ALBERNI - The final cost estimate for construction to house the new CT Scanner at West Coast General Hospital is half what was first projected. ...
Source: drwes.blogspot.com --- 36 days ago
St. Jude Medical came forth with a "Dear Doctor" letter (pdf) today regarding their findings regarding pacemaker and CT Scanner interactions which represents the most specific recommendations with CT scanners and their devices to date: Testing has shown that for devices which incorporate an accelerometor for rate responsive activity-based pacing, if the activity sensor is programmed "on" while continuous diagnostic X-ray exposure (e.g. CT scanning) is performed, if the beam of energy is directly over the implanted device, there may be a temporary increase in pacing rate during the exposure. The pacing rate will return to baseline pacing after the X-ray exposure is terminated. If increased rates occur, the pacing rate will be limited to the programmable Maximum Sensor Rate which is generally determined by the patient's physician as the safe maximum rate to be achieved during exercise. To prevent any potential transient rate increase, the clinician may want to consider programming the rate responsive sensor to Passive or OFF, if appropriate, prior to the X-ray procedure and then reprogram the parameter as desired after the diagnostic imaging is completed. Read the rest for the details. Medtronic's statement regarding the same issue is included here (pdf). I cannot recall ever seeing an interaction like the one they're describing, but the implications are that we'll have to be more cautious as CT scanners become more powerful, especially ... Source: www.topix.com --- 15 days ago
An evaluation of a Shockroom located CT Scanner: a Randomized study of Early Assessment by CT scanning in Trauma patients in the bi-located Trauma center North-West Netherlands . ... Source: brainimagingnews.net --- 34 days ago
Wired news is reporting : that: 'Three teams of scientists have created the first facial reconstructions of King Tutankhamun based on CT scans of his mummy. The images are strikingly similar both to each other and to ancient portraits of the boy pharaoh, including his depiction on the famed golden mask he wore into the crypt...' The report includes pictures of the re-creations. ... Source: rainyriverrecord.com --- 29 days ago
By Duane Hicks Fort Frances Times read more ... Source: tomographyblog.com --- 15 days ago
There has been some words on fast spinning CT scanners on this blog recently, so if you saw those videos and image that GE’s latest pre-clinical CT Scanner is able to capture images of the hearth beating as high as 600 bpm, you probably have a hard time imaging what is going on inside this [...] ... Source: www.wired.com --- 12 days ago
1973: The CT scan goes into use in the United States. Lives will be saved. Originally known as a CAT scan -- for computed (or computerized) axial tomography, or computer-aided (or assisted) tomography -- the process uses a series of X-rays to create sequential images of virtual slices of body tissue. Those can be integrated into a 3-D X-ray, so doctors know the precise position of diseased or otherwise abnormal tissue. In Medford, Massachusetts, in the 1960s, Tufts University physics professor Allan Cormack's main field was particle physics, but he laid the foundation for computerized tomography in his spare time. He theorized that you could take X-rays from varying angles; account for differences in the density of bone, muscle and organs; and program a computer to assemble 3-D images. Electrical engineer Godfrey Hounsfield was working on a similar line of research at the EMI Central Research Laboratories in England. (Yes, that's the same EMI as the record label, and massive profits from The Beatles' 1960s hits funded development of the CT Scanner .) Hounsfield developed a CT machine that could perform brain scans. He began testing it in 1971 -- sometimes carrying bull's brains across London on public transit. His announcement of the invention at a series of British scientific meetings in 1972 created a stir. Hounsfield's prototype took five minutes to make a scan, and two-and-half hours for the computer to process an image. The f ... Source: www.ncbi.nlm.nih.gov --- 14 days ago
Related Articles Quantitative Assessment of Wall Motion in Gated SPECT Using the Centerline Method. Nippon Hoshasen Gijutsu Gakkai Zasshi. 2008 Jul 20;64(7):814-21 Authors: Imae T, Fujii K, Takano M, Yamazaki J, Iida K, Mima K, Shinohara H Evaluation of myocardial wall motion is an important assessment of heart function. Specific analysis programs in nuclear medicine, such as QGS (quantitative gated SPECT) analysis and p-FAST (perfusion-function assessment for myocardial SPECT), have been used to assess wall motion, but they have not evaluated it through a comparison of normal data. The centerline method, using left ventriculograms (LVG), evaluates regional wall motion quantitatively through a comparison of normal data and patient data, and abnormality of wall motion is expressed in units of standard deviation (SD) s from the mean motion in a reference population. However, angiography is an invasive inspection, wall motion analysis is usually in one direction, and the conventional centerline method is not a three-dimensional analysis. The purpose of this study was to apply the centerline method to nuclear medicine and examine the wall motion of subjects through a comparison of normal wall motion non-invasively and in a three-dimensional way. We arranged the analysis program using C language and inspected it using a dynamic cardiac phantom and computed tomography (CT) Scanner. We made a polar map that indicated the mean and SD of norma ... Source: www.ncbi.nlm.nih.gov --- 25 days ago
Related Articles Evaluating the influence of the Siemens IGRT carbon fibre tabletop in head and neck IMRT. Radiother Oncol. 2008 Aug 7; Authors: Spezi E, Angelini AL, Romani F, Guido A, Bunkheila F, Ntreta M, Ferri A BACKGROUND AND PURPOSE: To investigate the impact of a commercial IMRT/IGRT carbon-fibre tabletop in radiotherapy planning optimization and clinical dose distribution. MATERIALS AND METHODS: In this investigation the Siemens IGRT carbon fibre tabletop, routinely used for IMRT treatments in our Centre, has been incorporated into the CT volume of 6 IMRT patients. This was done by CT scanning the tabletop and by adding the obtained volume to the clinical dataset, acquired using the standard couch available in our CT Scanner. This procedure was tested and validated for the purpose of this study. The radiotherapy plans have been optimized using both the original CT volume and the modified CT volume. RESULTS: IMRT optimization with the tabletop included in the clinical volume produced significantly different deliverable plans compared to standard optimized plans which did not include the treatment couch. Differences up to 6%/7% in terms of total number of MU were found in half of the clinical cases. Differences up to 37% in the number of MU per beam were also found. The number of iterations needed to reach an optimal solution also varied between -18% and +25%. Although the DVH analysis produced similar results, due to the fulfi ... Source: www.ncbi.nlm.nih.gov --- 32 days ago
Related Articles Variability of lesion detectability and standardized uptake value according to the acquisition procedure and reconstruction among five PET scanners. Ann Nucl Med. 2008 Jul;22(6):543-8 Authors: Takahashi Y, Oriuchi N, Otake H, Endo K, Murase K OBJECTIVE: The objective of this study was to assess differences in the semiquantitative values of (18)F-fluorodeoxyglucose ((18)F-FDG) uptake among different positron emission tomographic (PET) systems. METHODS: A phantom study was performed to compare standardized uptake value (SUV) in five PET scanners including a dedicated PET Scanner and four PET/computed tomography (CT) scanners. Radioactivity simulating the SUV of 2.5 was filled in the hot spheres (8 mm, 11 mm, 14 mm, 18 mm, 22 mm, and 27 mm) that were set in the cylindrical phantom with the background SUV of 1.0. Data acquisition and reconstruction were performed according to routine and standardized conditions. The standardized condition was as follows: CT acquisition (120 kVp, 50 mA) and PET acquisition (2-min acquisition with a slice thickness of 2 mm); reconstruction was performed by ordered subsets expectation maximization + Fourier rebinning. Detectability of hot spheres and SUV was compared between routine condition and standardized condition with five PET scanners. RESULTS: On routine condition, two cameras could detect a 14-mm sphere clearly. On the other hand, the visualization of hot spheres by the standardized ... Source: www.ncbi.nlm.nih.gov --- 15 days ago
Related Articles Venous thromboembolism and occult malignancy: simultaneous detection during pulmonary CT angiography with CT venography. AJR Am J Roentgenol. 2008 Sep;191(3):885-9 Authors: Bierry G, Holl N, Kellner F, Riehm S, Roedlich MN, Greget M, Veillon F OBJECTIVE: We explored the potential for patients with proven venous thromboembolism or pulmonary embolism (PE) to have occult malignancies detected during the same CT examination. To verify this, we compared the presence of occult malignancies identified on pulmonary artery CT angiography (CTA) and CT venography (CTV) when venous thromboembolism (VTE) was present. SUBJECTS AND METHODS: Pulmonary artery CTA combined with CTV was performed on a 16-MDCT Scanner on 186 adult patients suspected of having pulmonary embolism without any known malignancies. CTV was performed from the diaphragm to the knee 180 seconds after CTA. Two radiologists evaluated the presence of VTE, that is PE or deep venous thrombosis (DVT), and tumor lesions on both examinations in consensus. The malignant nature of the possibly identified tumors was confirmed by pathologic examination. RESULTS: VTE was found in 49 patients (26%). Malignant tumors were detected in 24 patients (13%). Eleven patients with malignant tumors had VTE (46% of patients with malignant tumors; 22% with VTE and 6% of all patients). There was correlation with presence of malignancies between both and DVT and DVT associated with PE but n ... Source: www.ncbi.nlm.nih.gov --- 1 day ago
Related Articles The use of CT in the development and implementation of a preoperative protocol to aid in pedicle screw placement during scoliosis surgery. Pediatr Radiol. 2008 Apr;38(4):452-6 Authors: Jamieson D, Perdios A, Varghese R, Reilly CW Scoliosis surgical constructs, using pedicle screws, provide increased fixed penetrable points for rod attachment. This allows improved curve correction and increases hardware stability. We have implemented a multidetector CT evaluation of the spine with post-process image manipulation to aid pedicle screw placement for deformity correction. Preoperative scanning was done with a Philips Brilliance 16 multislice CT Scanner. The created image dataset provided valuable preoperative information regarding pedicle morphology, suitability for screw placement and preoperative screw planning. Projected intraoperatively, the images increased the surgeon's confidence during screw placement, especially in large deformities with severe rotation. Improving pre- and intraoperative pedicle information is a valuable tool in operative management of children with spinal deformity. PMID: 18265967 [PubMed - indexed for MEDLINE] ... Source: www.ajc.com --- 26 days ago
The control room looks like the cockpit of a jet, and Dr. Szilard Voros, a scientist at the Piedmont Heart Institute, is jumping excitedly from one large glass window to another big pane on the opposite wall. Monitors beep and zigzag lines bounce up and down on several of the half-dozen computer screens. On one side, Jan McAlister, 40, is lying on a gurney, being run through the purring doughnut hole of a low-dose radiation CT Scanner that looks like a torpedo tube. On the other, a middle-aged man is sliding through a similar device that shows his heart in multiple views but exposes him to more radiation. ... Source: www.medicalnewstoday.com --- 32 days ago
GE Healthcare announced the commercial release of a new pre-clinical computed tomography Scanner specifically designed to accelerate research in the areas of cardiac disease and drug development. The GE eXplore CT 120 Scanner is an all-new design based on years of research CT Scanner experience. ... Source: www.eurekalert.org --- 4 days ago
( University of Toronto ) Today, University Health Network became the first institution in the world to have three 320-slice CT scanners, as Toronto Western Hospital's Scanner began clinical operation. ... Source: www.newswise.com --- 4 days ago
Today, University Health Network (UHN) became the first institution in the world to have three 320-slice CT scanners, as Toronto Western Hospital's (TWH) Scanner began clinical operation. The world's most advanced Computer Tomography technology, the 320-slice CT can cut time-to-treatment by two-thirds for stroke patients, help cancer specialists map tumours for treatment in greater detail than ever before, and allow cardiac disease to be diagnosed with unparalleled confidence. ... Find more results for CT Scanner on RSSMicro.com |
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General Electric is releasing a new CT Scanner for laboratory work involving unlucky rodents. The unit can scan the speedy beating heart of a lab mouse with a shutter rate of over 600 clicks per minute. From the press release: The GE eXplore CT 120 Scanner is an all-new design based on years of research CT Scanner experience. Using x-ray source technology derived from clinical systems, the eXplore CT 120 features 100 times the output of previous GE laboratory research imaging systems. This power enables x-ray exposures fast enough and detailed enough to capture the motion of a beating mouse heart, and brings the power of cardiac CT imaging to a popular mammal used in disease research and drug development. The power of the new x-ray source also allows for more effective filtering of the x-ray beam, reducing the x-ray dose to the research subject compared to previous scanners, while greatly reducing the scan time. Features from the product page: Rapid scans facilitated by a 5 kW pulsed high-output x-ray tube Application flexibility enabled by adjustable imaging parameters: Tube potential 70-120 kV, current up to 50 mA, exposure time as short as 8 ms Rodent cardiac imaging made possible by less than 1 millisecond pulse precision, capable of capturing over 600 beats per minute Multi-modality support built-in for hybrid imaging X-ray filtering reduces animal dose, decreases image artifacts Press release : GE HEALTHCARE INTRODUCES NEWES ...