A5081937221- ECG Monitoring and Analysis
- Advanced MRI Techniques and Applications
- MRI in cancer diagnosis
- Advanced Neuroimaging Techniques and Applications
- Non-Invasive Vital Sign Monitoring
- Cardiac Imaging and Diagnostics
- Immunotherapy and Immune Responses
- Advancements in Transdermal Drug Delivery
- HIV/AIDS Research and Interventions
- Nail Diseases and Treatments
- Elevator Systems and Control
- Cardiac Arrhythmias and Treatments
- Urticaria and Related Conditions
- Cutaneous lymphoproliferative disorders research
- Advanced Adaptive Filtering Techniques
- Atrial Fibrillation Management and Outcomes
- Advanced NMR Techniques and Applications
- Artificial Intelligence in Healthcare and Education
- Empathy and Medical Education
- Brain Metastases and Treatment
- Fungal Infections and Studies
- Cutaneous Melanoma Detection and Management
- HIV Research and Treatment
- Cardiac electrophysiology and arrhythmias
- Cardiovascular Syncope and Autonomic Disorders
University of California, Irvine
2024
Yale University
2019-2024
Taipei Veterans General Hospital
1985-2003
Boston University
1997-2002
Boston Medical Center
1997-1999
University Medical Center
1997
The adverse consequences of HIV and related comorbidities on the central nervous system remain prevalent in era combination antiretroviral therapy. Metabolic syndrome (MetS) is a common comorbidity has been linked to increased neurocognitive impairment general population. We investigated association between MetS neurocognition among persons living with (PLHIV).
The conditions in which the image intensity of vessels transporting laminar flow is attenuated black-blood MR angiography (BB-MRA) with turbo spin-echo (TSE) and conventional (CSE) pulse sequences are investigated experimentally a phantom, studied theoretically by means Bloch equation-voxel sensitivity function (VSF) formalism, computer modeled. experiments effects of: a) velocity, b) imaging axes orientation relative to direction, c) phase encoding order TSE train. formulated equation-VSF...
The aim of this study was to examine the frequency spectrum arterial pulses in 17 patients with acute, uncomplicated myocardial infarction. Recordings right radial were taken from these immediately after their arrival at emergency room. This information considered as baseline data and monitored same time each day for up 7 days. These serial recordings then analyzed together 3 control groups not suffering included subjects who underwent coronary arteriography (n = 24), angioplasty 18), mitral...
Many of the usual methods for detection QRS complexes in ECG analysis or monitoring systems have been based on linear filters. These filters may miss ectopic beats small amplitudes, mistake tall T-waves as complexes, and even smooth signal edges. In this report, an algorithm a nonlinear digital filter, which is running filter with hanning window smoothing, fully described. The purpose to recognize almost all bizarre shapes waveforms population 2,200 patients. Compared three cardiologists'...
Abstract We investigated the feasibility of performing black‐blood MR angiography (MRA) with gradient and spin‐echo (GRASE) pulse sequence. Phantom experiments human testing were conducted, results compared those turbo (TSE). demonstrated that both techniques are able to produce signal suppression flowing fluid background level. With fewer radiofrequency (RF)‐refocusing pulses, GRASE sequences could serve as an alternative technique reduced RF power exposure shorter scan time. These relative...
The objectives of this study were to optimize T2-weighted hybrid-RARE pulse sequences for clinical MR imaging the liver, and compare them conventional spin-echo (CSE) sequence. Specifically, ranges echo train length (ETL) effective time (TEeff) investigated image quality liver-spleen contrast, in healthy volunteers. A total thirteen volunteers scanned at 1.5 Tesla with an extensive array scans. images analyzed quantitatively respect CNR (contrast-to-noise ratio spleen vs. liver), SNR (signal...
The conditions in which the image intensity of vessels transporting laminar flow is attenuated black-blood MR angiography (BB-MRA) with turbo spin-echo (TSE) and conventional (CSE) pulse sequences are investigated experimentally a phantom, studied theoretically by means Bloch equation-voxel sensitivity function (VSF) formalism, computer modeled. experiments effects of: a) velocity, b) imaging axes orientation relative to direction, c) phase encoding order TSE train. formulated equation-VSF...
A noninvasive method employing the technique of signal averaging has been developed for recording sinoatrial (S‐A) activity (pre‐ P wave). Recordings were obtained in man at time right heart catheterization. bipolar esophageal electrode was utilized to record prominent waves that used triggering process. After summing 150 beats, which had coefficients correlation 0.97 or larger, deflections small amplitude (< 40 μV) preceding atrial activity. Direct catheter recordings also taken...
A prospective study was undertaken of the high-frequency components terminal portion QRS complex in 38 Chinese patients with acute myocardial infarction (AMI) (mean age 62±5.6 years) within first week after event (5.5±1.2 days). Another 44 normals served as controls 57±9.6 years). The electrocardiogram averaged at a filter band pass 80-300Hz. low voltage span (LVS) signals less than 40μV QRS, root-mean-square (RMS) (V) 40 msec complex, and total duration signal-averaged vector were measured...
Cutaneous T-cell lymphoma (CTCL) is a non-Hodgkin of skin-homing malignant T cells, with mycosis fungoides (MF) being the most common subtype.1 MF can mimic benign inflammatory skin disorders and be diagnostically challenging in some cases.2 In such cases, identification cells aberrant immunophenotypes receptor gene rearrangement assays for clonality inform diagnosis. Morphea an fibrosing disorder that typically presents as pink to violaceous patches may progress more indurated sclerotic plaques.
Objective The role of radiation therapy (RT) in melanoma has historically been limited to palliative care, with surgery as the primary treatment modality. However, adjuvant RT can be a powerful tool certain cases and its application increasingly explored recent years. aim this study is explore national patterns care associations surrounding use for stage III melanoma. Methods National Cancer Data Base (NCDB) was used identify patients who were diagnosed between 2004 2014. Exclusion criteria...
A rule-based expert system which is capable of performing arrhythmia diagnosis (ARDIAG) has been constructed. The composed an IBM PC/AT, A/D converter, and building tool, Exsys. ARDIAG the characteristics a cardiologist, simulating inference process. It reliable, portable, easy to communicate with. Using ARDIAG, can be done in 2 min. ARDIAG's diagnoses for 367 ECGs are compared with those two experienced cardiologists shown agree 87.4% cases. sensitivity specificity common arrhythmias...
The author investigated the feasibility of detecting human brain lesions by using magnetic resonance (MR) imaging mapping technique diffusion coefficients. MR images a typical normal are shown; conventional SE image and weighted image. It is demonstrated that ventricles have highest intensity due to water consistency cerebospinal fluid. White matter has lowest coefficient because its lipid consistency. A T1-weighted patient with an aged mapped same shown. size shown be larger than normal....
A new algorithm for the compression and real-time digital transmission of ECG data over normal telephone lines has been developed tested. The technique combines modified adaptive delta modulation second difference with Huffman coding. methods was 91.67% 73.7% respectively, averaging 82.6%. high ration good quality signal reproduction achieved. This method is suitable standard networks in real time. Compressed 12-lead are sent to a central processing unit via line, using 1200-baud modem...