PT/P(VDF-TrFE) hydrophone array

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A poling study of lead zirconate titanate/polyurethane 0–3 composites

Author name used in this publication: S. T. LauAuthor name used in this publication: K. W. KwokAuthor name used in this publication: F. G. ShinAuthor name used in this publication: S. Kopf2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

PZT/P(VDF-TrFE) nanocomposite hydrophones for ultrasonic measurements

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Ultrasonic hydrophone based on distributed Bragg reflector fiber laser

2004-2005 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Living donor liver transplantation in adults

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Liver transplantation for hepatocellular carcinoma

Hepatocellular carcinoma (HCC) is the third commonest cancer in Hong Kong. Up to 80% of patients have inoperable tumour at presentation, either because of underlying cirrhosis or advanced stage of the disease. The present report described a case of orthotopic liver transplantation (OLT) for HCC. Prognostic factors for survival and selection criteria for liver transplantation are discussed. Early referral of selected patients with HCC to a transplant centre can offer a hope of cure. The best candidate for OLT is a young patient with an asymptomatic small HCC in a cirrhotic liver.published_or_final_versio

Structural evolution and dielectric relaxation behavior of electron-irradiated poly(vinylidene fluoride-trifluoroethylene) 80/20 mol% copolymers

2003-2004 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Outpatient laparoscopic cholecystectomy in Hong Kong Chinese - An outcome analysis

BACKGROUND: Laparoscopic cholecystectomy (LC) is now the procedure of choice for symptomatic gallbladder disease. Although many recent studies, mostly from abroad, report that it can be performed safely in the outpatient setting, the experience of outpatient LC in Hong Kong is still limited. This retrospective study evaluated the feasibility, safety and patient acceptance of outpatient LC in Hong Kong Chinese patients. PATIENTS AND METHODS: The data of 73 consecutive patients who had undergone outpatient LC between February 2000 and October 2002 in the Day Surgery Centre of Tung Wah Hospital were prospectively collected and reviewed. The selection criteria for patients undergoing outpatient LC included American Society of Anesthesiologists risk classification I or II, age less than 70 years, and the availability of a competent adult to accompany the patient home and look after them for 24 hours. No effort was made to exclude complicated cases. After assessment by the operating surgeon, patients were discharged from the Day Surgery Centre in the afternoon when their clinical condition satisfied pre-defined discharge criteria. All patients were followed up in the Day Surgery Centre in the first and fourth postoperative weeks. RESULTS: The same-day discharge rate was 88% and the conversion rate was 4%. Six patients (8.2%) with uneventful LC required hospitalization after the procedure. There was no major complication and no unplanned admission. Two patients had port site wound infection requiring hospital admission at the first follow-up. Patient satisfaction was high, pain acceptance was good, and analgesic consumption was minimal. Mild fat intolerance was common in patients postoperatively (> 50%), but this had almost all resolved by postoperative week four. All patients were able to resume their usual daily activities within 2 weeks after surgery. CONCLUSIONS: LC is a safe and feasible outpatient procedure in Hong Kong, with high levels of patient satisfaction. A prospective study with a larger patient population is warranted to verify whether it should be recommended as treatment for gallstone disease in selected patients in future.postprin

Spherically shaped active transducer based on proton-irradiated vinylidene fluoride-trifluoroethylene 70/30 mol% copolymer

2006-2007 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Persistence of hepatic hepatitis B virus after serological clearance of HBsAG with autologous peripheral stem cell transplantation

Delayed clearance of hepatitis B surface antigen was previously reported in a 38 year old woman after high dose chemotherapy with autologous peripheral blood stem cell rescue. Sixteen months later, this patient remained hepatitis B surface antigen negative, hepatitis B surface anti-body positive, and serum hepatitis B DNA negative by polymerase chain reaction. Serial liver biopsies (one at hepatitis B e antigen positive stage, one at hepatitis B e antibody positive stage, and one at hepatitis B surface antigen negative and hepatitis B surface antibody positive stage) showed a gradual resolution of the inflammatory activity with loss of hepatitis B e antigen and then hepatitis B surface antigen in the serum. However, the degree of fibrosis, though mild, remained the same. With the serological clearance of hepatitis B surface antigen, a small amount of hepatitis B virus DNA was still detectable in the nuclei of liver cells.published_or_final_versio