A5079759742- Head and Neck Cancer Studies
- Salivary Gland Tumors Diagnosis and Treatment
- Head and Neck Anomalies
- MRI in cancer diagnosis
- Thyroid Cancer Diagnosis and Treatment
- Advanced MRI Techniques and Applications
- Lymphadenopathy Diagnosis and Analysis
- Head and Neck Surgical Oncology
- Radiomics and Machine Learning in Medical Imaging
- Ear and Head Tumors
- Cancer Diagnosis and Treatment
- Oral and Maxillofacial Pathology
- Acute Ischemic Stroke Management
- Lung Cancer Treatments and Mutations
- Lymphoma Diagnosis and Treatment
- Tumors and Oncological Cases
- Bone and Joint Diseases
- Ultrasound Imaging and Elastography
- Spine and Intervertebral Disc Pathology
- Mycobacterium research and diagnosis
- COVID-19 diagnosis using AI
- Advanced Neuroimaging Techniques and Applications
- Lung Cancer Diagnosis and Treatment
- Viral-associated cancers and disorders
- Infectious Diseases and Tuberculosis
St. George's University
2025
Govind Ballabh Pant Hospital
2025
Narayan Medical College and Hospital
2025
Government Medical College
2025
Rajasthan University of Veterinary and Animal Sciences
2024
Chinese University of Hong Kong
2011-2023
The Sanskrit College and University
2022
Prince of Wales Hospital
2010-2019
Tuen Mun Hospital
2018
Pamela Youde Nethersole Eastern Hospital
2018
There has been an outbreak of the severe acute respiratory syndrome (SARS) worldwide. We report clinical, laboratory, and radiologic features 138 cases suspected SARS during a hospital in Hong Kong.From March 11 to 25, 2003, all patients with after exposure index patient or ward were admitted isolation wards Prince Wales Hospital. Their demographic, characteristics analyzed. Clinical end points included need for intensive care death. Univariate multivariate analyses performed.There 66 male...
To compare the toxicities, tumor control, survival, and quality of life nasopharyngeal cancer (NPC) patients treated with sequential neoadjuvant chemotherapy followed by concurrent cisplatin-radiotherapy (CRT) or CRT alone.Previously untreated stage III to IVB NPC were randomly assigned (1) docetaxel 75 mg/m(2) cisplatin every 3 weeks for two cycles, 40 mg/m(2)/wk radiotherapy, (2) alone. Planned accrual was 30 per arm detect 20% difference toxicities based on 95% CIs.From November 2002...
Despite doubts about their efficacy and concern safety, antithrombotic agents are often used to treat acute ischemic stroke. Recent experience in patients with other thromboembolic disorders suggests that low-molecular-weight heparin, which requires only subcutaneous administration once or twice daily, may be more effective safer than standard (unfractionated) heparin.
In Brief Study Design. A reliability study was conducted. Objective. To modify a grading system for lumbar disc degeneration and to test the of this modified system. Summary Background Data. The 5-level Pfirrmann did not prove discriminatory when used assess in elderly spine. Such power is necessary association between other variables severity degeneration. Methods. An 8-level developed including description changes expected each grade 24-image reference panel. tested on 260 intervertebral...
To document utility of shear-wave (SW) elastography for assessing liver fibrosis in chronic hepatitis B and to compare its performance with that transient elastography.Ethics committee approved the study, informed consent was obtained. Patients biopsy correlation (n = 226) healthy patients 171) were analyzed. Results SW liver, spleen, compared correlated according METAVIR scores. Areas under receiver operating characteristic curve (AUCs), binary logistic regression, Delong test used.AUC...
Purpose The contribution of adjuvant chemotherapy after chemoradiation therapy (CRT) in nasopharyngeal cancer (NPC) remains controversial. Plasma Epstein-Barr virus (EBV) DNA is a potential biomarker subclinical residual disease NPC. In this prospective, multicenter, randomized controlled trial, we used plasma EBV to identify patients with NPC at higher risk relapse for chemotherapy. Patients and Methods Eligible histologically confirmed Union International Cancer Control stage IIB IVB,...
Purpose To determine the diagnostic performance of diffusion-weighted (DW) imaging for prediction treatment failure in primary head and neck squamous cell carcinoma (HNSCC). Materials Methods The study was approved by local institutional ethics committee conducted with informed written consent patients HNSCC treated radiation therapy chemotherapy. DW tumor performed before 37 repeated within 2 weeks 30 patients. Histograms apparent diffusion coefficients (ADCs) were analyzed, mean ADC,...
To retrospectively evaluate the radiographic appearances and pattern of progression severe acute respiratory syndrome (SARS).Chest radiographs obtained at clinical presentation during treatment in 138 patients with confirmed SARS (66 men, 72 women; mean age, 39 years; age range, 20-83 years) were assessed. Radiographic pulmonary parenchymal abnormality, distribution, extent involvement on initial chest documented. Recognizable patterns determined by comparing overall percentage lung for each...
PURPOSE: To report the initial experience regarding thin-section computed tomographic (CT) findings in patients with severe acute respiratory syndrome (SARS) who improved clinically after treatment. MATERIALS AND METHODS: Twenty-four (10 men, 14 women; mean age, 39 years; age range, 23–70 years) confirmed SARS underwent follow-up CT of thorax. The scans were obtained on average 36.5 days hospital admission and analyzed for parenchymal abnormality (ground-glass opacification, consolidation,...
The purpose of our study was to determine the prevalence, pattern, and spectrum glenoid bone loss in anterior shoulder dislocation, relate this frequency test appropriateness measurement method.Two hundred eighteen patients with single or recurrent dislocation underwent CT examination. Fifteen had bilateral dislocation. Prevalence severity fracture were assessed. examinations 56 control subjects without evaluated for contour side-to-side variation width.Glenoid present 27 (41%) 66 first-time...
PURPOSE: To compare the diagnostic accuracy of computed tomography (CT), magnetic resonance (MR) imaging, and ultrasonography (US) in detection necrosis metastatic cervical nodes from patients with head neck squamous cell carcinoma. MATERIALS AND METHODS: Twenty-seven (age range, 39–85 years; mean age, 62 years) carcinoma underwent CT, MR US. Three radiologists evaluated images for nodal necrosis. The results each modality were analyzed sensitivity, specificity, accuracy. Pathologic analysis...
Background and Purpose —Intracranial large-artery occlusive disease is the predominant vascular lesion found in stroke patients of Asian, African, Hispanic ancestry, making it numerically perhaps most common cause world. Relatively little known about clinical significance finding such lesions. We investigate whether presence extent these lesions help predict outcome after stroke. Methods —On basis transcranial Doppler intracranial arteries with supplementary duplex ultrasound carotid...
To retrospectively analyze the thin-section computed tomographic (CT) features in patients with severe acute respiratory syndrome (SARS) at authors' institution.From March 11, 2003, to April 2, 74 symptoms and signs suggestive of SARS underwent CT thorax; all except for one patient who conventional CT. Group 1 (n = 23) had keeping criteria from Centers Disease Control Prevention a positive chest radiograph. 2 17) high clinical suspicion but normal 3 34) minor The images were analyzed...
Background The purpose was to use MR imaging document the patterns of nodal involvement in upper neck nasopharyngeal carcinoma (NPC). Methods images 150 patients with newly diagnosed NPC were reviewed retrospectively. Nodes considered abnormal on criteria size, necrosis, and extracapsular spread. Results Retropharyngeal nodes (RN) more frequently involved than nonretropharyngeal (NRNs) (94% vs 76% 115 metastases). NRN without RN seen only 7 (6%). Involvement at level oropharynx (82%) as...
To prospectively determine the diagnostic accuracy of diffusion-weighted magnetic resonance (MR) imaging for discrimination malignant neck nodes due to lymphoma, squamous cell carcinoma (SCC), and undifferentiated nasopharyngeal (NPC), with histologic findings criteria as reference standards.Ethics committee approval informed consent were obtained. Patients lymphadenopathy underwent 1.5-T MR imaging. A region interest was drawn around node on apparent diffusion coefficient (ADC) maps; ADC...
Community-acquired pneumonia (CAP) is a leading infectious cause of death throughout the world, including Hong Kong.To compare ability three validated prediction rules for CAP to predict mortality in Kong: 20 variable Pneumonia Severity Index (PSI), 6-point CURB65 scale adopted by British Thoracic Society and simpler CRB65.A prospective observational study 1016 consecutive inpatients with (583 men, mean (SD) age 72 (17) years) was performed university hospital New Territories Kong 2004. The...
Abstract A link between bone blood flow and osteoporosis may exist. Outside of the spine, proximal femur is most common site osteoporotic fracture also an area prone to avascular necrosis nonunion. This study investigates relationship BMD, marrow fat content, perfusion, muscle perfusion. One hundred twenty healthy female subjects (mean age, 74 yr; age range, 67–89 yr) underwent DXA examination hip, proton MR spectroscopy, dynamic contrast-enhanced imaging right femur, acetabulum, adductor...
To evaluate whether there is a relationship between steroid treatment and risk for osteonecrosis of the hip knee in patients with severe acute respiratory syndrome (SARS).The hospital ethics committee approved study, all provided written informed consent. A total 254 confirmed SARS treated steroids underwent evaluation magnetic resonance (MR) imaging osteonecrosis. Clinical profiles, joint symptoms, relevant past medical drug history, dose, radiographic MR evidence other bone abnormalities...