BACKGROUND: The prevalence of incidental pulmonary emboli (PE) detected on contrast enhanced CT performed for other reasons is approximately 2.5%. The treatment decisions based upon the discovery of incidental PE have been less well reported. The purpose of this study was to report the clinicians response to, and consequences of, the finding of incidental PE on contrast enhanced CT. METHODS: Retrospective cohort study. Patients with incidental PE detected on a contrast enhanced CT were retrospectively identified at a single institution between 1 January 2009 and 31 December 2009. Case note review was performed to assess clinicians responses to this finding. Patients with synchronous venous thromboembolism, unrecognised symptoms or factors preventing response assessment were excluded from this analysis. Patient and PE characteristics, treatment, and outcomes related to treatment and non-treatment were recorded. RESULTS: There were 73 patients with incidental PE: 52 were in the proximal pulmonary
Multidetector Coronary Ct Angiography PrinciplesPractice And Applications - Buy Multidetector Coronary Ct Angiography PrinciplesPractice And Applications by KARTHIKEYAN with best discount of 10.00% at meripustak.com.
TY - JOUR. T1 - Multidetector row CT with dual-phase CT angiography in the preoperative evaluation of pancreatic cancer. AU - Horton, Karen M.. AU - Fishman, Elliot K.. PY - 2002/1/1. Y1 - 2002/1/1. UR - http://www.scopus.com/inward/record.url?scp=0036426627&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0036426627&partnerID=8YFLogxK. U2 - 10.3109/20024091059189. DO - 10.3109/20024091059189. M3 - Article. C2 - 12425453. AN - SCOPUS:0036426627. VL - 43. SP - 323. EP - 360. JO - Critical Reviews in Diagnostic Imaging. JF - Critical Reviews in Diagnostic Imaging. SN - 1040-8371. IS - 5. ER - ...
We report the usefulness of multidetector CT angiography (CTA) in the diagnosis of interrupted aorta of a neonate. CTA is useful for evaluating malformations of the aortic arch, particularly in cases that cannot undergo conventional angiography or in which detailed information cannot be provided by echocardiography. ...
Extract. Non-enhanced computed tomography (NECT) has been the standard imaging technique to diagnosis ischemic stroke and exclude hemorrhage. NECT is often preferred to MRI because it is more commonly available in emergency settings, is less expensive and is simpler to perform on severely ill patients. The development of multidetector helical CT (MDCT) has increased the spatial resolution and decreased the required time for CT imaging, thereby permitting special imaging protocols. MDCT angiography (MD-CTA) directly visualizes the intra- and extracranial arteries and thus can be used to identify vascular stenosis or occlusion. Perfusion MDCT (MD-CTP) dynamically assesses the cerebral microvasculature and thus permits quantification of the extent of reversibly and irreversibly damaged brain tissue.. The combined use of all three CT modalities (NECT, MD-CTA and MD-CTP) provides a wealth of information on altered brain anatomy, large vessel status and tissue hemodynamics. Several teams of ...
Therefore, as this case exemplifies, accurate depiction of site and features of SEMS-related perforation is crucial and should rely on multidetector CT. Sometimes complemented with oral contrast swallow in cooperative patients, CT has significant advantages over endoscopy and plain radiographs, particularly for retroperitoneal abnormalities such as those from injuries involving the oesophagogastric junction and second-through-fourth duodenal portions. CT is sensitive for even minimal intraperitoneal, mediastinal or retroperitoneal air, and provides comprehensive high-resolution display of the stent, gastrointestinal wall and surrounding structures, usually allowing clarification of the site and mechanism of injury and correct therapeutic choice [3, 6-10 ...
TY - JOUR. T1 - A comparison of the efficacy and safety of iopamidol-370 and iodixanol-320 in patients undergoing multidetector-row computed tomography. AU - Sahani, Dushyant V.. AU - Soulez, Gilles. AU - Chen, Ke Min. AU - Lepanto, Luigi. AU - Xu, Jian Rong. AU - Nelson, Rendon C.. AU - Grazioli, Luigi. AU - Vanzulli, Angelo. AU - Heiken, Jay P.. PY - 2007/12. Y1 - 2007/12. N2 - OBJECTIVES: To prospectively compare the effects on heart rate (HR) and contrast enhancement efficacy of iopamidol-370 and iodixanol-320 in contrast-enhanced, multidetector-row computed tomography (CE-MDCT). METHODS: IMPACT is a multicenter, double-blind study involving 166 patients undergoing CE-MDCT of the liver (n = 121) or peripheral arteries (n = 45) randomized to receive equi-iodine doses (40 gI) of iopamidol-370 or iodixanol-320 intravenous at 4 mL/s. CE-MDCT was performed using 16-MDCT scanners according to predefined imaging protocols. HR was measured with the patient in the supine position before and ...
With advancements in computed tomographic (CT) technology and the development of 3-dimensional (3D) software programs, multidetector CT (MDCT) now offers val...
|strong|In recent years technological advances have enabled improvements in both temporal and spatial resolution such that multi-detector computed tomog ...
Garcia et al enrolled 238 patients from 11 different hospitals over a nine month period; all had been referred for non-emergency coronary angiography. All patients underwent initial low-dose multidetector computed tomography (MDCT) to evaluate coronary artery calcium, and those with an Agatston score , 600 (187 patients) underwent contrast-enhanced MDCT. Both the MDCT studies and the patients subsequent angiograms were analysed by independent core laboratories. Of 1629 non-stented segments larger than 2 mm in diameter, 89 (5.5%) occurred in 59 (32%) of 187 patients with stenosis of more than 50% by conventional angiography. Of the 1629 segments, 71% were evaluable on MDCT. All non-evaluable segments were censored as positive, and this allowed a sensitivity for detecting more than 50% luminal stenosis to be calculated as 89%; specificity 65%; positive predictive value 13%; and negative predictive value 99%. Sensitivity for detecting more than 70% luminal stenosis was 94%; specificity 67%; ...
Early detection and improved treatment approaches following breast cancer (BC) have increased disease specific survival and resulted in increasing cohorts of BC survivors who are prone to develop late complications from treatment, including damage caused by radiation therapy (RT) to the heart. Older RT techniques for treating the breast resulted in excess cardiovascular morbidity and mortality. Improved RT techniques minimize irradiation to the heart. Data from various trials have yielded conflicting results on the extent to which these contemporary techniques have actually decreased cardiotoxicity. Long term follow-up and large cohorts are needed in order to evaluate the risk for cardiotoxicity, when based on its clinical manifestations. The current study is aimed to evaluate various imaging methods as potential surrogates to assess the degree of damage caused to the heart by RT in BC survivors many years before it becomes clinically apparent.This includes Multi-detector computed tomography ...
Multidetector-row computed tomography (MDCT) has become a fundamental imaging technique for the study of many anatomical districts in different clinical situations, as it provides a fast, reliable, an
肝門部胆管を含めた肝の区域・亜区域の局所解剖の研究は1950年代に欧米で始まったが,その臨床的外科的局所解剖の研究の発展は日本の臨床家に負うところが大きい.肝門部胆管癌の診断体系はMDCTの登場により大きく変貌した.ステージングおよび手術法の立案はMDCTだけでも十分可能であるといっても過言ではない. 肝外胆管切除, ...
KESKINOZ, Elif Nedret et al. Análisis Morfométrico de la Vena Cava Inferior Relacionado con las Vértebras Lumbares en la Bifurcación Aórtica Mediante Tomografía Computadorizada Multidetector (TCMD). Int. J. Morphol. [online]. 2016, vol.34, n.2, pp.620-627. ISSN 0717-9502. http://dx.doi.org/10.4067/S0717-95022016000200033.. Vascular structures are in greater danger during lumbar surgery. The purpose of this study is to describe the morphology of the inferior vena cava (IVC) related to the lumbar vertebra and aortic bifurcation (AB) and assessing the role of demographic values in these relations to decrease the risk of complications in the surgical interventions. The study was performed on Multidetector Computed Tomography (MDCT) images of 100 male and 100 female cases with an age range from 50 to 84 years. The morphometric values of the IVC obtained from the coronal, sagittal and the axial reformatted images were measured and compared with the demographic values. The distance from the IVC ...
TY - JOUR. T1 - Positive predictive value of computed tomography coronary angiography in clinical practice. AU - Groothuis, J.G.J.. AU - Beek, A.M.. AU - Meijerink, M.R.. AU - Brinckman, S.L.. AU - Heijmans, M.W.. AU - van Kuijk, C.. AU - van Rossum, A.C.. PY - 2012. Y1 - 2012. N2 - Background: Several studies have investigated the diagnostic performance of computed tomography coronary angiography (CTCA) for the detection of significant coronary artery disease (CAD). These studies were performed in patients that were already referred for invasive coronary angiography (ICA) and prevalence of significant CAD was high. Although the negative predictive value of CTCA was consistently high, a wide range of positive predictive values (PPVs) was reported. Thus, the PPV of CTCA in patients that undergo CTCA as part of a clinical diagnostic evaluation remains unclear. This study investigated the PPV of CTCA for the detection of significant CAD in clinical practice. Methods: A total of 181 patients with ...
To evaluate the spectrum, prevalence, and significance of incidental non-cardiac findings (INCF) in patients referred for a non-invasive coronary angiography using a 128-slice multi-detector CT (MDCT). The study subjects included 1,044 patients
TY - JOUR. T1 - Three-dimensional CT angiography with multidetector CT data. T2 - Study optimization, protocol design, and clinical applications in the abdomen. AU - Lawler, Leo P.. AU - Fishman, Elliot K.. PY - 2002/1/1. Y1 - 2002/1/1. N2 - The quality and flexibility of abdominal CT angiograms have been well served by advances in multidetector technology and volume rendering techniques, which allow real-time, interactive modification of high-quality data sets. We have applied this approach to many of the established and developing roles of CT and we discuss and illustrate protocol design and application.. AB - The quality and flexibility of abdominal CT angiograms have been well served by advances in multidetector technology and volume rendering techniques, which allow real-time, interactive modification of high-quality data sets. We have applied this approach to many of the established and developing roles of CT and we discuss and illustrate protocol design and application.. UR - ...
PURPOSE: The aim of our study was to assess the diagnostic capabilities of multidetector CT in the evaluation of the small bowel in different pathological conditions, with the use of oral hyperhydration with isotonic solution. MATERIALS AND METHODS: The study retrospectively evaluated 106 patients who underwent multidetector CT of the small bowel. Four groups were considered on the basis of the clinical findings: group A (48 cases), with suspected or certain chronic inflammatory disease of the small bowel; group B (16 cases), with suspected neoplastic lesion of the small bowel; group C (17 cases), patients affected by malabsorption; group D (25 cases), others: 13 cases with non-specific abdominal pain, 4 cases with occult bleeding, 8 cases affected by fever of unknown origin. Thirteen patients had previously undergone surgical intestinal resection. In all cases the CT examination was performed after the oral administration of 2000 mL polyethylene glycol electrolyte balanced solution; before the ...
Objective: Myocardial scintigraphy and/or conventional angiography (CA) are often performed before cardiac surgery in an attempt to identify unsuspected coronary artery disease which might result in significant cardiac morbidity and mortality. Multidetector CT coronary angiography (MDCTCA) has a recognised high negative predictive value and may provide a non-invasive alternative in this subset of patients. The aim of this study was to evaluate the clinical value of MDCTCA as a preoperative screening test in candidates for non-coronary cardiac surgery.. Methods: 132 patients underwent MDCTCA (Somatom Sensation 16 Cardiac, Siemens) in the assessment of the cardiac risk profile before surgery. Coronary arteries were screened for ⩾50% stenosis. Patients without significant stenosis (Group 1) underwent surgery without any adjunctive screening tests while all patients with coronary lesions ⩾50% at MDCTCA (Group 2) underwent CA.. Results: 16 patients (12.1%) were excluded due to poor image quality. ...
CTA using a 64-slice scanner is an accurate tool for detecting and characterizing aneurysms in acute SAH. CTA is useful in the decision process whether to coil or clip an aneurysm.
TY - JOUR. T1 - Long-term prognostic utility of computed tomography coronary angiography in older populations. AU - Gnanenthiran, Sonali R.. AU - Naoum, Christopher. AU - Leipsic, Jonathon A.. AU - Achenbach, Stephan. AU - Al-Mallah, Mouaz H.. AU - Andreini, Daniele. AU - Bax, Jeroen J.. AU - Berman, Daniel S.. AU - Budoff, Matthew J.. AU - Cademartiri, Filippo. AU - Callister, Tracy Q.. AU - Chang, Hyuk Jae. AU - Chinnaiyan, Kavitha. AU - Chow, Benjamin J.W.. AU - Cury, Ricardo C.. AU - Delago, Augustin. AU - Feuchtner, Gudrun. AU - Hadamitzky, Martin. AU - Hausleiter, Joerg. AU - Kaufman, Philipp A.. AU - Kim, Yong Jin. AU - Maffei, Erica. AU - Marques, Hugo. AU - De Araújo Goncalves, Pedro. AU - Pontone, Gianluca. AU - Raff, Gilbert L.. AU - Rubinshtein, Ronen. AU - Shaw, Leslee J.. AU - Villines, Todd C.. AU - Gransar, Heidi. AU - Lu, Yao. AU - Jones, Erica C.. AU - Penã, Jessica M.. AU - Lin, Fay Y.. AU - Kritharides, Leonard. AU - Min, James K.. PY - 2019/11/1. Y1 - 2019/11/1. N2 - Aims: ...
Coronary CT Angiography (Coronary CTA) is a CT scan of the heart and can show any narrowings or blockages of the coronary arteries. It is often used to determine if chest pains are caused by these narrowings or blockages. Working with a number of local cardiologists were able to assess patients with chest pains and determine the most appropriate test. If patients are appropriate for coronary CTA, they will undergo some preparation before returning for the scan. Coronary CTA scans require a referral from a specialist and is covered by Medicare with a small out of pocket fee. Attendance of the Rapid Assessment Clinic will require a referral from your GP.. Medicare rebates for CCTA require a referral from a Specialist.. There are no Medicare rebates available for Calcium scores. GPs can refer directly.. ...
The situation in Italy regarding radiation dose to patients undergoing Multidetector row Computed Tomography (MDCT) scans is unclear despite Italian law
TY - JOUR. T1 - Feasible scan timing for 320-row coronary CT angiography generated by the time to peak in the ascending aorta. AU - Shirasaka, Takashi. AU - Nagao, Michinobu. AU - Yamasaki, Yuzo. AU - Kojima, Tsukasa. AU - Kondo, Masatoshi. AU - Shimomiya, Yamato. AU - Kamitani, Takeshi. AU - Honda, Hiroshi. PY - 2019/3/1. Y1 - 2019/3/1. N2 - Purpose: A 320-row CT scanner can briefly scan the entire heart. Therefore, the feasible scan timing is required. The aim of this study was to propose a refined method for feasible scan timing for coronary CT angiography (CCTA) using a time-density curve of the ascending aorta (AAo). Methods: One-hundred and twenty-nine patients were prospectively enrolled. All patients were performed test-bolus method. For the initial 65 patients, the scan timing was determined as a 3.0 s delay at the peak time in the AAo, which was defined as the conventional protocol (COV-P). For the next 64 patients, a scan timing of 1.0, 3.0, or 5.0 s delay was determined according to ...
BACKGROUND: Endovascular management is the mainstay of therapy for most patients with primary and secondary liver tumors. Radiologist should understand the anatomy of the hepatic vasculature and tumor feeding vessels to ensure successful conduction of the embolization procedure. The aim of this study was to evaluate the accuracy of multidetector computed tomographic angiography (MDCTA) for the evaluation of hepatic arterial anatomy and tumor feeding vessels prior to embolization procedure ...
Background: The clinical value of multidetector computed tomography (MDCT) in assessing myocardial reperfusion after acute myocardial infarction (AMI) is currently unclear. We aim to validate the ability of MDCT for assessing myocardial viability and predicting left ventricular (LV) remodeling after AMI.. Methods: In 52 consecutive patients with first AMI, 64-slice MDCT without iodine reinjection was performed immediately after selective coronary angiography. ECG-gated thallium-201 SPECT was performed using QGS programs within 5 days and 6 months after onset. Transmurality and extent of myocardial delayed enhancement (DE) were assessed, and results combined with angiographic, SPECT, clinical follow-up data at 6 months to evaluate functional and prognostic significance of DE findings.. Results: Among the 52 patients, 18 patients (Group A) showed transmural contrast DE, 20 patients (Group B) showed subendocardial contrast DE, and 14 patients (Group C) had no contrast DE. In the acute phase, peak ...
Objective Osteoporosis diagnosis using multidetector CT (MDCT) is limited to relatively high radiation exposure. We investigated the effect of simulated ultra-low-dose protocols on in-vivo bone...
Coronary CT angiography has become a robust imaging technique for visualization of the coronary arteries. The most common application is to use this noninvas...
September 2, 2008 - Two recent studies demonstrate the economical value of cardiac imaging, showing MDCT to be cost-effective for men and cost-saving for women, and demonstrating how echo is cost-effective in determining patient eligibility for ICDs (implantable cardioverter-defibrillators).. In a study recently published in the American Journal of Roentgenology, lead investigator Joseph Ladapo, M.D., and his team at Harvard, identified cost-benefits of cardiac imaging by evaluating patients who presented to the ER with low-risk chest pain. Their research compared the standard of care to multidetector CT (MDCT) coronary angiography-base management and found MDCT to be cost-effective for men, and cost-saving for women. Hospital costs decreased by an average of $410 per female, while general per capita health care expenditures fell $380 for women.. Because coronary CT angiography is so good at ruling out disease, women…are much more likely to avoid a costly admission, said Dr. Ladapo. I ...
Center: ◼◼ extracellular hemichromes ◼◼ T1 - isointense ◼◼ T2 - hyperintense. Assessing potential for an underlying lesion in intracranial hemorrhage • Patient age, known risk factors, and hematoma location help to assess the likelihood that a hemorrhage reflects an underlying lesion rather than a spontaneous primary bleed. 13 on the companion website). 6 on the companion website). • Multidetector CT angiography (CTA) shows an overall sensitivity of 89-96%, a specificity of 92-100%, and an accuracy of 91-99% for the detection of vascular etiologies of hemorrhagic stroke when compared with catheter angiography. If the patient is tense, distract by asking to count backwards from 100. • If reflexes are absent, try reinforcement: the patient links both hands with the fingers flexed and curved and just before the tendon is struck pulls the hands strongly in opposite directions. Clenching the opposite fist can be used to reinforce upper extremity reflexes. The timing of reinforcement ...
Atıf İçin Kopyala Kaya D. , Yildiz E. CLINICAL NEUROLOGY AND NEUROSURGERY, cilt.111, sa.5, ss.415-421, 2009 (SCI İndekslerine Giren Dergi) ...
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Initial experience in patients evaluated for CAD shows that spiral MDCT studies may provide LV functional data in good correlation to Cine MRI.
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Disclosures: Dr. Bamberg has received grants/funding from Bayer Healthcare & Siemens Healthcare. Dr. Choe has nothing to disclose. Dr. Funabashi has nothing to disclose. Dr. Schoepf is a consultant for and has received grants/funding from Bayer, Bracco, GE, Medrad, & Siemens.. ...
There is no question: the barbell bent over row is one of the best exercises you can do to build thick slabs of muscle to support every strength movement and build a powerful, head turning body.. In fact, from a pure benefit driven perspective, Id argue the barbell bent over row should be a staple in nearly every program whether youre trying to build muscle, lose fat, and look good naked or hoist a huge deadlift.. Taking this a step further, the barbell bent over row requires you to perform a hip hinge and isometrically hold position. This builds incredible strength and resiliency through your core stabilizers to build an injury resistant midsection and of course, brutal strength on hip hinge patterns like deadlifts.. As you can see, the starting position for a barbell bent over row matches the body position required to perform deadlifts with optimal form. More directly, barbell bent over rows build incredible strength and muscle through your posterior chain. Barbell rows specifically hammer ...
The underlying concept is to image fluid within the ducts while suppressing signal from non-fluid structures [8]. The main aim of this classic MRCP sequence is to demonstrate ductal fluid as hyperintense while filling defects, such as those caused by stones, are displayed as hypointense [12]. Traditionally, a set of radially oriented thick slab MRCP images were obtained and may still be the case in many centres [44, 47]. It has been somewhat successful and so it is understandable that centres continue to use this approach. This may be of benefit when anatomical structures are difficult to identify on axial images (perhaps due to prior surgery or congenital anomalies) or because of an advanced stage of pathology which results in severe distortion of the relevant anatomical structures. However, the authors believe that this approach, if used for every case, may falsely lead to an oversimplification of the MRCP procedure. It may even be considered as a novice approach since it is not targeted ...
The other day, at a spontaneous party at his place that went from zero guests in the morning to 15 adults and eight kids, he went shopping and bought four large cuts of beef called ball tips here, weighing around four pounds each, a side of salmon and two dozen chicken sausages. Ramping up the Webers temperature to 400 degrees with the lid closed, Shakir then slapped on the meat, and the fish followed a few minutes later. The salmon obviously cooked more quickly, and was removed as soon as it was done. The thick slabs of beef took around 15 minutes to achieve a seared exterior and a juicy pink interior. This is the perpetual goal of the amateur cook: how to ensure that the outer surface doesnt get burned while the centre is cooked just right. Kenji Lopez-Alt provides some answers in his book The Food Lab: Better Cooking Through Science. A scientist and food writer, one of the things he emphasises is the importance of resting roasts and steaks after cooking them. According to the writer, the ...
In Fridays Daily News, an NFL scout will break down the Eagles position-by-position. Heres what he had to say about the teams linebackers. - Paul Domowitch, Philadelphia Daily News
Hi, I need to calculate the percentage of cells that contain data for rows and columns. Ive labeled the row and column and Percent Complete.
Around 4 AM, I was woken up by the baby - the first time this has happened! And then she/he proceeded to thump me 12 times in a row, even kicking b
TY - JOUR. T1 - Discrepancy between computed tomography coronary angiography and selective coronary angiography in the pre-stenting assessment of coronary lesion length. AU - Soon, K. H.. AU - Farouque, H. M.O.. AU - Chaitowitz, I.. AU - Cox, N.. AU - Selvanayagam, J. B.. AU - Zakhem, B.. AU - Bell, K. W.. AU - Lim, Y. L.. PY - 2007/10/1. Y1 - 2007/10/1. N2 - We aimed to compare the lesion length measured on computed tomography coronary angiography (CT-CA) with the selective coronary angiography (SCA) lesion length measured on quantitative coronary angiography (QCA). Compared with SCA, CT-CA has the advantage of showing the lumen and the atherosclerotic plaque in the arterial wall. This prospective observational study involved 44 coronary lesions. Computed tomography coronary angiography was carried out with an electrocardiogram-gated 16-slice CT before percutaneous coronary intervention. A cardiologist and a radiologist measured CT lesion lengths in consensus, whereas an interventional ...
INTRODUCTION. Over the past few years, multidetector computed tomography (MDCT) has been demonstrated as a feasible alternative to invasive coronary angiography (ICA), allowing noninvasive evaluation of the coronary arteries.1-4 However, contradictory results have been reported regarding the effect of coronary artery calcium score (CS) on the diagnostic accuracy of MDCT.5,6 With the first generations of MDCT scanners, severe coronary calcifications were recognized as an important factor hampering precise evaluation of coronary artery stenosis, thereby limiting diagnostic accuracy. Calcified plaques produce artifacts (blooming) which may affect the evaluation of luminal obstruction.7 At the same time, more extensive coronary calcification increases the likelihood that the patient has obstructive coronary artery disease,8,9 and ICA is usually required for definitive diagnosis and treatment. Advances in temporal and spatial resolution, especially the introduction of 64-detector rows, and growing ...
Rapid access chest pain clinics have facilitated the early diagnosis and treatment of patients with coronary heart disease and angina. Despite this important service provision, coronary heart disease continues to be under-diagnosed and many patients are left untreated and at risk. Recent advances in imaging technology have now led to the widespread use of noninvasive computed tomography, which can be used to measure coronary artery calcium scores and perform coronary angiography in one examination. However, this technology has not been robustly evaluated in its application to the clinic. The SCOT-HEART study is an open parallel group prospective multicentre randomized controlled trial of 4,138 patients attending the rapid access chest pain clinic for evaluation of suspected cardiac chest pain. Following clinical consultation, participants will be approached and randomized 1:1 to receive standard care or standard care plus ≥64-multidetector computed tomography coronary angiography and coronary calcium
TY - GEN. T1 - Feature-based non-rigid volume registration of serial coronary CT angiography. AU - Woo, Jonghye. AU - Hong, Byung Woo. AU - Dey, Damini. AU - Cheng, Victor. AU - Ramesh, Amit. AU - Sundaramoorthi, Ganesh. AU - Kuo, C. C.Jay. AU - Berman, Daniel S.. AU - Germano, Guido. AU - Slomka, Piotr J.. PY - 2009/12/15. Y1 - 2009/12/15. N2 - Coronary CT angiography (CTA) with multi-slice helical scanners is becoming the integral part of major diagnostic pathways for coronary artery disease. In addition, coronary CTA has demonstrated substantial potential in quantitative coronary plaque characterization. If serial comparisons of plaque progression or regression are to be made, accurate 3D volume registration of these volumes would be particularly useful. In this work, we propose a coronary CTA volume registration of the paired coronary CTA scans using feature-based non-rigid volume registration. We achieve this with a combined registration strategy, which uses the global rigid registration as ...
TY - JOUR. T1 - Computed tomography evaluation of right heart dysfunction in patients with acute pulmonary embolism. AU - He, Hongying. AU - Stein, Marjorie W.. AU - Zalta, Benjamin. AU - Haramati, Linda B.. PY - 2006/3/1. Y1 - 2006/3/1. N2 - Purpose: To evaluate the role of qualitative assessment of right heart dysfunction on multidetector computed tomography (CT) in patients with acute pulmonary embolism. Methods: Seventy-four consecutive adults with pulmonary embolism diagnosed on multidetector nongated CT were identified between July 2002 and March 2004. There were 47 women and 27 men, with a mean age of 62 years. Each CT scan was jointly reviewed by 2 of 3 reviewers in consensus. The CT scans were qualitatively assessed for dilatation of the right ventricle and the position of the interventricular septum. Scans were considered positive for right heart dysfunction if, on visual integration of multiple axial images, the right ventricle was dilated or the interventricular septum was ...
Introduction: Determination of mechanical valve function and size with multidetector computed tomography (MDCT) is feasible, but its accuracy is not established.. Hypothesis: MDCT can accurately assess the size and function of mechanical valves.. Methods: Retrospective evaluation of 62 consecutive patients with 64 mechanical valves (37 single-disc, 27 bi-leaflet; 59 aortic, 5 mitral) and both 64-slice ECG-gated MDCT and transthoracic echocardiography (TTE); a subset had fluoroscopy (n=10). Independent, blinded interpretations by 2 radiologists (MDCT) and 2 cardiologists (TTE and fluoroscopy) were performed. MDCT measured opening angles (OA), annulus diameter (AD), geometric orifice area (GOA), and evaluated complete closure. TTE measured mean pressure gradient (MPG), ejection fraction, and aortic insufficiency. Fluoroscopy measured OA.. Results: Mean ejection fraction was 62 ± 8%; it was ,50% in 2 patients. Each MDCT variable could be measured in all cases. There was excellent correlation and ...
It seems so simple and elegant. Fifty years after the introduction of coronary angiography, advances in technology allow imaging of the coronary arteries noninvasively using multidetector computed tomography (CT) scanners (1). Within a few short years, these imaging systems have begun appearing everywhere, first in hospitals and clinics, then in individual doctors offices, offering the promise of safe and painless detection of coronary obstructions (2). Weekend courses allow the members of our profession to learn this new technology and apply it routinely to patient care (3). The manufacturers of the equipment, all large multinational providers of radiological imaging devices, are quite pleased to show practitioners how they can rapidly recoup their million-dollar investments (4,5). What could possibly be wrong with this picture? Medical progress to the betterment of patients (and practitioners).. In this issue of the Journal, an interesting and important paper by Meijboom et al. (6) provides ...
Aims: The effects of a beta blocker, especially an ultra-short acting selective beta blocker, such as landiolol hydrochloride on the organ protection in sepsis are unclea..
Contrast-enhanced multidetector-row computed tomography (MDCT) is now capable of providing high-quality noninvasive views of cardiac anatomy and instant noninvasive coronary angiography. With current generation 64-slice scanners, MDCT can be performed in most patients with minimal patient discomfort and high diagnostic accuracy. MDCT may obviate the need for invasive diagnostic angiography in patients with borderline symptoms or equivocal noninvasive testing. It is useful in assessing the symptomatic patient postrevascularization and in emergency room triage in selected patients with chest pain. Calcified vessels are still difficult to assess, as is the accurate evaluation of implanted coronary stents. The volume of contrast material required for proper opacification limits the use of MDCT in patients with renal dysfunction, but newer emerging technologies will greatly improve these disadvantages in the near future. MDCT is expected to become an integral part of our diagnostic armamentarium in the
Subjects. Adult asthma subjects were recruited as part of the SARP 3 cohort. The SARP 3 protocol includes 3 baseline visits in which asthma subjects undergo detailed characterization, including sputum questionnaires, MBRT, a systemic corticosteroid responsiveness test, and an optional MDCT scan of the lungs (Supplemental Figure 6). Data reported here are from subjects that had MDCT scans as part of their baseline characterization. CT was not repeated after steroid injection. Healthy subjects for MDCT scans were recruited at a single center (Washington University), and subjects for sputum cell analyses were recruited from all SARP 3 centers (Supplemental Table 1). Twenty-five asthma subjects who had MDCT scans as part of the SARP 3 protocol also had MDCT scans available from their participation in SARP 1 or SARP 2 protocols. These subjects were enrolled at 3 sites: University of Pittsburgh, University of Wisconsin, and Washington University (Supplemental Table 2). Forty-three asthma subjects who ...
Safety of coronary CT angiography and functional testing for stable chest pain in the PROMISE trial: A randomized comparison of test complications, incidental findings, and radiation dose.
OBJECTIVE. We compared the diagnostic performance of gadoxetic acid-enhanced MRI with that of triple-phase 16-, 40-, and 64-MDCT in the preoperative detection of hepatocellular carcinoma (HCC).. SUBJECTS AND METHODS. Sixty-two consecutively registered patients (54 men, eight women; age range, 31-67 years) with 83 HCCs underwent triple-phase (arterial, portal venous, equilibrium) CT at 16-, 40-, or 64-MDCT and gadoxetic acid-enhanced 3-T MRI. The diagnosis of HCC was established after surgical resection. Three observers independently and randomly reviewed the MR and CT images on a tumor-by-tumor basis. The diagnostic accuracy of these techniques in the detection of HCC was assessed with alternative free response receiver operating characteristic (ROC) analysis. Sensitivity, positive and negative predictive values, and sensitivity according to tumor size were evaluated.. RESULTS. For each observer, the areas under the ROC curve were 0.971, 0.959, and 0.967 for MRI and 0.947, 0.950, and 0.943 for ...
A traditional CT scan is an x-ray procedure that combines many x-ray images with the aid of a computer to generate cross-sectional views of the body. Cardiac CT uses the advanced CT technology with intravenous (IV) contrast (dye) to visualize your cardiac anatomy, coronary circulation and great vessels. Cleveland Clinic uses state-of-the-art multi-row detector CT scanners. With multi-slice scanning, it is possible to acquire high-resolution three-dimensional images of the moving heart and great vessels.. A cardiac computed tomography also may be called a coronary CT angiography, MSCT, CT, cardiac CT, coronary CTA or cardiac CAT scan.. ...
Recent advances in technology have resulted in the development of scanners that can image the heart blood vessels within 10 to 20 minutes but without the need for admission to hospital or insertion of catheters. Further advances in technology allow the visualisation of both the blood vessels and the supply of blood to the heart muscle. Here we propose to assess the latest and most powerful computed tomography scanner and compare it to magnetic resonance and conventional coronary angiography ...
Using non-invasive CT scan technology, CCTA takes a 3D picture of a beating heart in about five seconds. The digital pictures give doctors excellent image quality. They can quickly evaluate the heart and coronary arteries for plaque, a blockage or heart disease.
Cardiac-computed tomography is an X-ray imaging technique that uses a computer to produce cross-sectional images. Also referred to as computerized axial tomography, or CT, CAT scan, multidetector CT or MDCT, it can be used to examine the heart and blood vessels for problems. It is also used to identify the blood vessels in the brain affected by stroke.. ...
Multi-detector computed tomography (MDCT) is the most widespread tool in modern forensic radiology. Thanks to a short examination time, high spatial resolution, and the possibility of reconstructions in different axes and two and three dimensions, it is an excellent method for rapidly examining a whole body and performing a first analysis of lesions. In clinical radiology, the sensitivity of MDCT can be increased by injecting contrast agent and enhancing the obtained images, leading to better visualization of organ tissues and visualization of the vascular system. This clinical experience inspired researchers in postmortem imaging to start investigating the possibility of performing postmortem MDCT angiography. Similar to the clinical experience, the aim is to increase the sensitivity of postmortem computed tomography (PMCT) and allow investigation of the vascular system, which is often complex to examine in conventional autopsy, especially if small vessels are to be investigated. However, the ...
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Read Protocols for Multislice CT 4- and 16-row Applications by with Rakuten Kobo. Multislice technology has made it possible to investigate large sections of the human body in a very short time. The 4- ...
Radiological assessment should include both MDCT and MRI with size being assessed by the widest dimensions on either scan. A tumour (for the purposes of counting numbers) will require to be identified as an arterialised focal abnormality with portal phase washout on MDCT or Gd enhanced MR. Other tumours are considered indeterminate and do not count.. Tumour rupture and an α-fetoprotein (AFP) ,1,000 iu/ml are absolute contraindications to transplantation, as are extra-hepatic spread and macroscopic vascular invasion.. The following are criteria for transplantation listing:. ...
Radiological assessment should include both MDCT and MRI with size being assessed by the widest dimensions on either scan. A tumour (for the purposes of counting numbers) will require to be identified as an arterialised focal abnormality with portal phase washout on MDCT or Gd enhanced MR. Other tumours are considered indeterminate and do not count.. Tumour rupture and an α-fetoprotein (AFP) ,1,000 iu/ml are absolute contraindications to transplantation, as are extra-hepatic spread and macroscopic vascular invasion.. The following are criteria for transplantation listing:. ...
Up to 70 years and an increasing prevalence and incidence of chd in patients with insomnia due to occupational shampoos sold in individual sachets) has contributed to his asthma. Tips to puncture the kidney poles will provide only part of the biceps tendon in fractures of the. In practical terms, the information contained in the process, they oxidise the acids. 2. Geniculate ganglion all symptoms of paget s as peptides, these preparations are usually in the systolic blood pressure, headaches, low each minute. However, the drug concurrently with another human being in a dilute solution is found. Advise the patient to contact the most accurate method of feeding into the active compound or com- patients who have been tested in the rectus sheath is in a decrease in peripheral resistance becomes higher to maintain inhalation anaesthetics of the kidney and surrounding viscera how: How: How: - anamnesis mainly ncct (non contrast - mainly multidetector ct is specific to the rare event of respiratory ...
Cardiac imaging by multi-slice computed tomography (MSCT) is a recently developed technique for assessing the function of the heart and coronary arteries non-invasively.
We had free range of the lab this summer, and tried to use as many of the machines as possible: waterjet aluminum, foam milling with plaster casting, and metal cnc milling of a 1″ thick slab of aluminum (inaugural use!) for the joint capsules. It all came together in five minutes, ten minutes before the presentation. ...
Date: 360-355 B.C.. When a man has in his mind a good thick slab of wax, smooth and kneaded to the right consistency, and the impressions that come through the senses are stamped on these tables of the heart--Homers word hints at the minds likeness to wax--then the imprints are clear and deep enough to last a l.... ...
A dessert consisting of a layer of sponge cake topped by a thick slab of ice cream, all of which is blanketed with meringue. This creation is then baked in a very hot oven for about 5 minutes, or until the surface is golden brown. The meringue layer insulates the ice cream and prevents it from melting.. ...
Tomography, Patients, Calcium, Tissue, Perfusion, Atherosclerotic Plaque, Diabetes Mellitus, Multidetector Computed Tomography, Acute Coronary Syndrome, Angiography, Artery, Chest, Chest Pain, Coronary Artery, Pain, Syndrome, Absorption, Breast, Carcinoma, Carcinoma In Situ
For fragments emitted in the reactions 124Sn + 64Ni and 112Sn + 58Ni at 35 AMeV, isotopic composition and velocity correlations have been studied as a function of the centrality of the collision, using the 4 Chimera multidetector. We have investigated the time scale for fragments formation, in order to distinguish between prompt dynamical and sequential statistical emission. Promptly emitted light fragments (Z ≤9) produced in the mid-rapidity domain are characterised by larger N/Z ratio and stronger angular anisotropies than those produced in sequential statistical emission. Results are compared with stochastic BNV code simulations obtained for primary fragments. Valuable information on the symmetry term of the nuclear equation of state at sub-saturation densities are obtained ...
Objectives To assess the feasibility of Multi-Detector Computed Tomography Angiography (MDCTA) volumetry for the quantification and grading of acute non-cerebral, non-gastrointestinal bleeding.Methods This retrospective, single-center, study inve...
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Inimese mitokondri genoom koosneb 16 569-st aluspaarist, [23] mis esindab kõigest murdosa kogu raku DNAst. Erinevalt tuuma DNAst, mis päritakse mõlemalt vanemalt ja mis rekombinatsiooni käigus ümber korraldatakse, pärandub järglasele tavaliselt samasugune mtDNA nagu vanemal. Kuigi ka mtDNA rekombineerub, teeb ta seda iseenda koopiatega ühe mitokondri piires. Tänu sellele ja faktile, et mtDNA mutatsioonikiirus on suurem kui tuuma DNA-l, [24] on mtDNA võimas töövahend, millega saab uurida põlvnemist naisliine pidi (matrilineaarsus). Seda töövahendit kasutades on teadlastel õnnestunud kindlaks määrata paljude liikide esivanemad sadu põlvkondi tagasi. Inimese mtDNAd võib kasutada ka isikute tuvastamiseks.[25] Kohtumeditsiini laborid kasutavad aeg-ajalt mtDNAde võrdlemist, et tuvastada inimeste jäänuseid, eriti just vanemate ja tundmatute skelettide tuvastamiseks. Samas pole mtDNA spetsiifiline ainult ühele indiviidile (erinevalt tuuma DNAst) ning seetõttu kombineeritakse ...
Nitecore MH25GT on professionaalne kompaktne taskulamp, mida iseloomustab multifunktsionaalsus ja ülisuursuur jõudlus, sobib kasutamiseks jahi- ja otsingulambina. Valgusallikaks on võimas Cree XP-L HI V3 valgusdiood. Lambi laadimiseks ei pea eemaldama ...
Nota: When using UPDATE, FrontBase will not update columns where the new value is the same as the old value. This creates the possibility that fbsql_affected_rows() may not actually equal the number of rows matched, only the number of rows that were literally affected by the query. ...
UMTS GSM DECT C2000 WiFi WLAN - Hoogfrequente elektromagnetische straling kan de gezondheid schaden (zie onderbouwing en vele ervaringsverhalen op de website). Het is tijd voor nieuwe blootstellingslimieten en veilige alternatieven voor mobiele communicatie.
UMTS GSM DECT C2000 WiFi WLAN - Hoogfrequente elektromagnetische straling kan de gezondheid schaden (zie onderbouwing en vele ervaringsverhalen op de website). Het is tijd voor nieuwe blootstellingslimieten en veilige alternatieven voor mobiele communicatie.
I have several cells with an x in them. I am trying to get a total of the xs by row and column. I am new at this and need a step by step instruction...