Search results for: James Tam

Items from 1 to 20 out of 28 results

article

Cardiac Point-of-Care Ultrasound: State-of-the-Art in Medical School Education

Amer M. Johri, Joshua Durbin, Joseph Newbigging, Robert Tanzola, more

Journal of the American Society of Echocardiography > 2018 > 31 > 7 > 749-760

The development of small, user friendly, handheld ultrasound devices has stimulated the growth of cardiac point-of-care ultrasound (POCUS) for the purpose of rapid, bedside cardiac assessment. Medical schools have begun integrating cardiac POCUS into their curricula. In this review the authors summarize the variable approaches taken by several medical training programs with respect to duration of...

article

Cleaning verification: A five parameter study of a Total Organic Carbon method development and validation for the cleaning assessment of residual detergents in manufacturing equipment

Xue Li, Imad A. Haidar Ahmad, James Tam, Yan Wang, more

Journal of Pharmaceutical and Biomedical Analysis > 2018 > 149 > C > 33-39

A Total Organic Carbon (TOC) based analytical method to quantitate trace residues of clean-in-place (CIP) detergents CIP100^® and CIP200^® on the surfaces of pharmaceutical manufacturing equipment was developed and validated. Five factors affecting the development and validation of the method were identified: diluent composition, diluent volume, extraction method, location for TOC sample preparation,...

article

A simplified guide for charged aerosol detection of non-chromophoric compounds—Analytical method development and validation for the HPLC assay of aerosol particle size distribution for amikacin

Arianne Soliven, Imad A. Haidar Ahmad, James Tam, Nani Kadrichu, more

Journal of Pharmaceutical and Biomedical Analysis > 2017 > 143 > C > 68-76

Amikacin, an aminoglycoside antibiotic lacking a UV chromophore, was developed into a drug product for delivery by inhalation. A robust method for amikacin assay analysis and aerosol particle size distribution (aPSD) determination, with comparable performance to the conventional UV detector was developed using a charged aerosol detector (CAD). The CAD approach involved more parameters for optimization...

article

CHARACTERISTICS OF ACUTE CORONARY SYNDROME PRESENTATION IN YOUNG PATIENTS

Bill Ayach, Christopher Hayes, Malek Kass, John Ducas, more

Journal of the American College of Cardiology > 2017 > 69 > 11(S) > 276

article

AN UNUSUAL CAUSE OF ATRIAL FIBRILLATION

Shuangbo Liu, James Tam, Malek Kass

Journal of the American College of Cardiology > 2017 > 69 > 11(S) > 2276

article

Adjuvant radiation in the TORS era: Is there a benefit to omitting the tumor bed?

Stanislav Lazarev, Blagoja Todorov, James Tam, Vishal Gupta, more

Practical Radiation Oncology > 2017 > 7 > 2 > 93-99

Trans-oral robotic surgery (TORS) followed by adjuvant radiation therapy (RT) is becoming popular in treating node-positive tonsillar squamous cell carcinoma (SCC). One potential benefit is eliminating irradiation of the primary site when the tumor is widely resected, and targeting the neck only. This study assessed whether omitting the tumor bed provides any dosimetric or clinical advantage.We identified...

article

Cleaning verification: Exploring the effect of the cleanliness of stainless steel surface on sample recovery

Imad A. Haidar Ahmad, James Tam, Xue Li, William Duffield, more

Journal of Pharmaceutical and Biomedical Analysis > 2017 > 134 > C > 108-115

The parameters affecting the recovery of pharmaceutical residues from the surface of stainless steel coupons for quantitative cleaning verification method development have been studied, including active pharmaceutical ingredient (API) level, spiking procedure, API/excipient ratio, analyst-to-analyst variability, inter-day variability, and cleaning procedure of the coupons. The lack of a well-defined...

chapter

A Framework for Asynchronous Change Awareness in Collaboratively-Constructed Documents

James Tam, Saul Greenberg

Lecture Notes in Computer Science > Groupware: Design, Implementation, and Use > Awareness > 67-83

Change awareness is the ability of individuals to track the asynchronous changes made to a collaborative document or surface by other participants over time. We develop a framework that articulates what change awareness information is critical if people are to track and maintain change awareness. Information elements include: knowing who changed the artifact, what those changes involve,...

chapter

Depth Map Generation for 3-D TV: Importance of Edge and Boundary Information

Wa James Tam, Filippo Speranza, Liang Zhang

Three-dimensional Imaging, Visualization, and Display > Multiview Image Acquisition, Processing and Display > 153-181

article

Magnitude of perceived depth of multiple stereo transparent surfaces

Saori Aida, Koichi Shimono, Wa James Tam

Attention, Perception, & Psychophysics > 2015 > 77 > 1 > 190-206

According to the geometric relational expression of binocular stereopsis, for a given viewing distance the magnitude of the perceived depth of objects would be the same, as long as the disparity magnitudes were the same. However, we found that this is not necessarily the case for random-dot stereograms that depict parallel, overlapping, transparent stereoscopic surfaces (POTS). The data from five...

article

Adaptive Watermarking and Tree Structure Based Image Quality Estimation

Sha Wang, Dong Zheng, Jiying Zhao, Wa James Tam, more

IEEE Transactions on Multimedia > 2014 > 16 > 2 > 311 - 325

Image quality evaluation is very important. In applications involving signal transmission, the Reduced- or No-Reference quality metrics are generally more practical than the Full-Reference metrics. In this study, we propose a quality estimation method based on a novel semi-fragile and adaptive watermarking scheme. The proposed scheme uses the embedded watermark to estimate the degradation of cover...

article

Incidence, Secular Trends, and Outcomes of Cardiac Surgery in Aboriginal Peoples

Manish M. Sood, Navdeep Tangri, Paul Komenda, Claudio Rigatto, more

Canadian Journal of Cardiology > 2013 > 29 > 12 > 1629-1636

Canada's Aboriginal people experience a disproportionate burden of comorbid illnesses predisposing them to higher rates of atherosclerotic disease. We set out to investigate secular rates of cardiovascular surgery (CVSx) and postsurgical outcomes in Aboriginals compared with non-Aboriginals.All patients undergoing CVSx in Manitoba, Canada from 1995-2007 (N =12,170 [Aboriginal, 574, 4.7%; non-Aboriginal,...

article

The presence of ST-elevation in lead aVR predicts significant left main coronary artery stenosis in cardiogenic shock resulting from myocardial infarction: The Manitoba cardiogenic shock registry

Robin Ducas, Vignendra Ariyarajah, Roger Philipp, John Ducas, more

International Journal of Cardiology > 2013 > 166 > 2 > 465-468

Electrocardiographic (ECG) predictors of significant angiographic left main coronary artery stenosis (LMCS>50%) have been described in acute myocardial infarction using ST-segment elevation in lead aVR (aVR-STE). However, there is a paucity of data on its association with LMCS>50% in the setting of cardiogemic shock (CGS).We investigated 210 consecutive, unselected, patients from Sept. 2002–2006...

article

Problem‐driven three‐dimensional television research involving human visual perception studies

WA JAMES TAM, FILIPPO SPERANZA, CARLOS VÁZQUEZ

Japanese Psychological Research > 54 > 1 > 89 - 104

Stereoscopic three‐dimensional (S3‐D) visual entertainment has become a hot technology that is emerging very quickly in many new electronic devices and visual communication systems. Although this rapid growth of S3‐D technology is relatively recent, visual scientists have been conducting research on fundamental issues of stereoscopic 3‐D television (3‐D TV) development and deployment for many years...

article

Effect of rosuvastatin on C-reactive protein and progression of aortic stenosis

Kwan Leung Chan, Jean G. Dumesnil, James Tam, Andy Ni, more

American Heart Journal > 2011 > 161 > 6 > 1133-1139

Elevated C-reactive protein (CRP) is a common finding in patients with aortic stenosis (AS) and may be associated with rapid AS progression and worse outcome. The purpose of the study was to examine the role of high-sensitivity CRP and its interaction with rosuvastatin on the progression of AS.We measured CRP at baseline, 1 year, and end of follow-up in 260 patients with a median follow-up of 3.5...

article

INTERACTION BETWEEN ROSUVASTATIN AND HIGH SENSITIVITY C-REACTIVE PROTEIN ON PROGRESSION OF AORTIC STENOSIS

Kwan-Leung Chan, Andy Ni, James Tam, Randall Sochowski, more

Journal of the American College of Cardiology > 2010 > 55 > 10(S) > A149.E1395

article

Interventricular septal cleft aneurysm

Negareh Mousavi, James Tam, Iain Kirkpatrick, Davinder S. Jassal

Canadian Journal of Cardiology > 2009 > 25 > 8 > e291

article

The Aortic Stenosis Progression Observation: Measuring Effects of Rosuvastatin (ASTRONOMER) trial

Kwan-Leung Chan, Koon Teo, James Tam, Jean G. Dumesnil

American Heart Journal > 2007 > 153 > 6 > 925-931

Aortic stenosis (AS) is a common health problem in the western world. Recent studies have suggested that cholesterol lowering may have a salutary effect on the progression of AS. The primary objective of the ASTRONOMER study is to determine whether patients with AS randomized to rosuvastatin will experience less progression in AS severity as measured by aortic transvalvular gradients and valve areas...

article

An Image Quality Evaluation Method Based on Digital Watermarking

Sha Wang, Dong Zheng, Jiying Zhao, Wa James Tam, more

IEEE Transactions on Circuits and Systems for Video Technology > 2007 > 17 > 1 > 98 - 105

As a practical and novel application of watermarking, this paper presents a digital watermarking-based image quality evaluation method that can accurately estimate image quality in terms of the classical objective metrics, such as peak signal-to-noise ratio (PSNR), weighted PSNR (wPSNR), and Watson just noticeable difference (JND), without the need for the original image. In this method, a watermark...

article

Cardiac Metastasis From A Renal Cell Carcinoma

Abdulaziz Alghamdi, James Tam

Canadian Journal of Cardiology > 2006 > 22 > 14 > 1231-1232

A 59-year-old man developed an episode of syncope while he was driving. This resulted in a motor vehicle accident, and the patient sustained an open fracture of the left femur. Biopsy of the left femur fracture showed a metastastic renal cell carcinoma, and echocardiography revealed a right ventricular mass without contiguous vena caval or right atrial involvement. This is one of the few reported...

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INFONA - science communication portal

Search results for: James Tam

Cardiac Point-of-Care Ultrasound: State-of-the-Art in Medical School Education

Cleaning verification: A five parameter study of a Total Organic Carbon method development and validation for the cleaning assessment of residual detergents in manufacturing equipment

A simplified guide for charged aerosol detection of non-chromophoric compounds—Analytical method development and validation for the HPLC assay of aerosol particle size distribution for amikacin

CHARACTERISTICS OF ACUTE CORONARY SYNDROME PRESENTATION IN YOUNG PATIENTS

AN UNUSUAL CAUSE OF ATRIAL FIBRILLATION

Adjuvant radiation in the TORS era: Is there a benefit to omitting the tumor bed?

Cleaning verification: Exploring the effect of the cleanliness of stainless steel surface on sample recovery

A Framework for Asynchronous Change Awareness in Collaboratively-Constructed Documents

Depth Map Generation for 3-D TV: Importance of Edge and Boundary Information

Magnitude of perceived depth of multiple stereo transparent surfaces

Adaptive Watermarking and Tree Structure Based Image Quality Estimation

Incidence, Secular Trends, and Outcomes of Cardiac Surgery in Aboriginal Peoples

The presence of ST-elevation in lead aVR predicts significant left main coronary artery stenosis in cardiogenic shock resulting from myocardial infarction: The Manitoba cardiogenic shock registry

Problem‐driven three‐dimensional television research involving human visual perception studies

Effect of rosuvastatin on C-reactive protein and progression of aortic stenosis

INTERACTION BETWEEN ROSUVASTATIN AND HIGH SENSITIVITY C-REACTIVE PROTEIN ON PROGRESSION OF AORTIC STENOSIS

Interventricular septal cleft aneurysm

The Aortic Stenosis Progression Observation: Measuring Effects of Rosuvastatin (ASTRONOMER) trial

An Image Quality Evaluation Method Based on Digital Watermarking

Cardiac Metastasis From A Renal Cell Carcinoma

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