Joseph C. K. Lee

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OBJECTIVES This prospective study investigated the effects of caffeine ingestion on the extent of adenosine-induced perfusion abnormalities during myocardial perfusion imaging (MPI). METHODS Thirty patients with inducible perfusion abnormalities on standard (caffeineabstinent) adenosine MPI underwent repeat testing with supplementary coffee intake.(More)
Telemedicine has been shown to have a considerable impact in medical education, conferencing and consultation. As a result, the People's Republic of China has been keen to develop telemedicine. In her attempts to further the development of telemedicine, China has looked to the progress of medical services in Western countries such as Europe and North(More)
Using real-time quantitative PCR, cell-free EBV DNA was detectable in the plasma of 96% (55 of 57) of nasopharyngeal carcinoma (NPC) patients (median concentration, 21058 copies/ml) and 7% (3 of 43) of controls (median concentration, 0 copies/ml). Advanced-stage NPC patients had higher plasma EBV DNA levels than those with early-stage disease. At 1 month(More)
BACKGROUND Unexpected focal colorectal fluorodeoxyglucose (FDG) uptake is becoming a common clinical dilemma with the increasing utilization of positron emission tomography (PET). These findings may subsequently reveal malignant or premalignant pathology. AIM In addition to reporting the prevalence of clinically significant colonic pathology associated(More)
In adults, nesidioblastosis is a very infrequent condition and a rare cause of symptomatic presentations. The diagnosis of nesidioblastosis may be difficult with functional and anatomical imaging modalities. "Slight focal" pancreatic abnormalities using (111)In-pentetreotide imaging has been reported in patients with hyperinsulinaemic hypoglycaemia,(More)
OBJECTIVE To define the extent of nosocomial transmission of methicillin-resistant Staphylococcus aureus (MRSA) in patients admitted to a tertiary-care hospital. DESIGN A blinded, prospective surveillance culture study of patients admitted to the hospital to determine the transmission (acquisition) rate of MRSA. Risk factors associated with the likelihood(More)
BACKGROUND Implantable cardioverter-defibrillators (ICDs) reduce mortality in patients at risk for sudden cardiac death. However, clinical trials report higher rates of appropriate ICD therapies in implanted patients than untreated patient mortality rates would predict. OBJECTIVE This study sought to describe a newly recognized form of ventricular(More)
Studies of heart failure patients have demonstrated that serial QT prolongation and abnormally prolonged QT intervals are associated with greater mortality. Serial QT interval measurements in patients who undergo orthotopic heart transplantation (OHT) may quantify the degree of myocardial repolarization heterogeneity and serve as a marker of arrhythmogenic(More)
A 47-year-old man without prior cardiac disease presented with lightheadedness, nausea, and fatigue while golfing. The initial 12-lead ECG demonstrated a first-degree atrioventricular delay, a transthoracic echocardiogram revealed normal myocardial thickness and left ventricular function, and stress nuclear imaging studies showed no ischemia; however,(More)
The planning and installation of a telemedicine system for communication within a teaching hospital and its academic and hospital units with a capacity for accommodation of up to 400 video-stations is described. The system is intended for improving the communication between patients and health professionals, and between the health professionals themselves.(More)