226
|
Jiang HY, Yan LS, Sun YF, Ye J, Pan W, Luo B, Zou XH. Photonic arbitrary waveform generation based on crossed frequency to time mapping. OPTICS EXPRESS 2013; 21:6488-6496. [PMID: 23482218 DOI: 10.1364/oe.21.006488] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Microwave photonic arbitrary waveform generation based on incoherent frequency-to-time-mapping (FTTM) accompanied by intersymbol interference, so called crossed FTTM (CFTTM). The pulse shape can be defined and tuned by properly adjusting the spectrum shaper (symbol shape) and the degree of intersymbol interference. UWB-, triangular-, rectangle-, comb- and user-defined pulse shapes are experimentally obtained.
Collapse
|
227
|
Pan W, Gong J, Yang C, Feng R, Guo F, Sun Y, Chen H. Peripheral blood CD40-CD40L expression in human breast cancer. Ir J Med Sci 2013; 182:719-21. [PMID: 23456134 DOI: 10.1007/s11845-013-0931-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 02/21/2013] [Indexed: 10/27/2022]
Abstract
BACKGROUND Breast cancer is the most common cancer in women. T cell-based immunotherapy for cancer has attracted much attention recently. CD40 and CD40L occupy an important position of specific immune response. In this paper, we want to study the role of co-stimulatory molecules CD40/CD40L and their clinical significance in peripheral blood of patients with breast cancer. METHODS Thirty breast cancer patients served as observation group, who were diagnosed as having infiltrating ductal breast cancer histopathologically, and 30 healthy as control group. Flow cytometric analysis was conducted to detect the expression of CD40 and CD40L on B and T lymphocytes in peripheral blood. The relationship between the CD40/CD40L expression levels and pathological grades was analyzed. RESULTS The expression levels of CD40/CD40L on B cells and T cells in breast cancer patients were significantly higher than those in the controls (all P < 0.001), and CD40/CD40L levels had a significant positive relationship with pathological grades (all P < 0.001). CONCLUSIONS The upregulated levels of co-stimulators CD40/CD40L on B cells and T cells may play an important role in the immune pathogenesis of breast cancer.
Collapse
|
228
|
Pan W, Du L, Wu Y, Cai W. Successful sleeve lobectomy of inflammatory myofibroblastic tumor in a 4-year-old child. Ann Thorac Cardiovasc Surg 2013; 20 Suppl:430-3. [PMID: 23445794 DOI: 10.5761/atcs.cr.12.02143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Primary pulmonary tumors in small children have remained a challenge for pediatric surgeons. Pneumonectomy and radical lobectomy are limitedly indicated due to surgical difficulties and sequelae. Here, we present our experience with a 4-year-old patient who suffered from an inflammatory myofibroblastic tumor. A left lower sleeve lobectomy was performed, and the patient recovered significantly after surgery. At the last follow-up, the child was growing well without any sequel, which supports our hypothesis that in small children, sleeve resection is the preferred treatment for tumors on the main stem bronchus and presents an alternative to an otherwise unavoidable pneumonectomy.
Collapse
|
229
|
Yu X, Li C, Hong W, Pan W, Xie J. Autophagy during Mycobacterium tuberculosis infection and implications for future tuberculosis medications. Cell Signal 2013; 25:1272-8. [PMID: 23416463 DOI: 10.1016/j.cellsig.2013.02.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Accepted: 02/10/2013] [Indexed: 12/14/2022]
Abstract
Autophagy is a cellular homeostasis mechanism to eliminate unwanted or excessive organelles, or for the turnover of long-life cytosolic macromolecules. During Mycobacterium tuberculosis infection, autophagy represents not only an antimicrobial mechanism for the clearance of the intracellular pathogen, but also prevents excessive inflammation, avoiding the adverse effects on host. Here we focus on the anti-tuberculosis autophagy and signal pathways involved, and attempt to depict an integrative map of the interaction between autophagy and cytokine, ROS production, vitamin D, and inflammatory response. Novel autophagy-based therapy is also summarized. This integrative insight might add some novel thoughts for better tuberculosis medications.
Collapse
|
230
|
Li Z, Ying X, Shen Y, Ye P, Pan W, Chen H. Laparoscopic versus open surgery for rectal cancer: a clinical comparative study. J Int Med Res 2013; 40:1599-607. [PMID: 22971513 DOI: 10.1177/147323001204000440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To compare short-term surgical outcomes and long-term survival following laparoscopic or open resection for rectal cancer. METHODS A total of 381 patients undergoing laparoscopic surgery and 276 undergoing open surgery for curative resection of rectal cancer were included. Long-term survival and peri- and postoperative data were retrospectively reviewed from a prospectively-collected database. RESULTS Surgical groups were comparable regarding age, gender, tumour stage and preoperative comorbidities. Laparascopic surgery was associated with significantly longer duration of surgery, less intraoperative blood loss and fewer postoperative infections than open surgery. Patients who underwent laparoscopic resection had significantly earlier recovery of gastrointestinal function than those who underwent open surgery. There were no significant between-group differences in number of lymph nodes excised, specimen length or distal margin. The 3- and 5-year survival rates and overall survival were similar in the two groups, and survival was not influenced by tumour location. CONCLUSION Laparoscopic surgery can achieve the same oncological results as open resection in patients with rectal cancer, supporting its continued use in the management of this disease.
Collapse
|
231
|
Ma YN, Luo B, Yan LS, Pan W, Zou XH, Zhao JP, Li NQ, Liu XK. Bandwidth improvement for slow light using amplification characteristics of cascaded vertical-cavity surface-emitting lasers. OPTICS LETTERS 2013; 38:308-310. [PMID: 23381420 DOI: 10.1364/ol.38.000308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A scheme to improve the bandwidth of slow light using cascaded vertical-cavity surface-emitting lasers (VCSELs) is proposed and experimentally demonstrated. In the scheme, a proper adjustment on the gain peaks of two cascaded VCSELs enables the generation of the desired composite gain spectrum, which has flat-top gain and delay profiles with enhanced peak values. By employing the improved gain and delay profiles in a slow light system, a large delay can be achieved within a wider bandwidth. In the experiment, by using two cascaded VCSELs, a tunable slow light up to 135 ps for a 5 Gbits/s pseudorandom binary sequence is demonstrated with relatively low signal distortion.
Collapse
|
232
|
|
233
|
Liao W, Pan B, Chen M, Jia H, Pan W. Multiple subcutaneous abscesses: A rare presentation of cutaneous cryptococcosis. Indian J Dermatol Venereol Leprol 2013; 79:118-9. [DOI: 10.4103/0378-6323.104687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
234
|
Pan W. Approaches on genetic polymorphism of Cryptococcus Species Complex. FRONT BIOSCI-LANDMRK 2013; 18:1227-36. [DOI: 10.2741/4174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
235
|
Sun P, Huo J, Kurtán T, Mándi A, Antus S, Tang H, Draeger S, Schulz B, Hussain H, Krohn K, Pan W, Yi Y, Zhang W. Structural and stereochemical studies of hydroxyanthraquinone derivatives from the endophytic fungus Coniothyrium sp. Chirality 2012; 25:141-8. [PMID: 23255384 DOI: 10.1002/chir.22128] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Accepted: 09/24/2012] [Indexed: 01/17/2023]
Abstract
Four known hydroxyanthraquinones (1-4) together with four new derivatives having a tetralone moiety, namely coniothyrinones A-D (5-8), were isolated from the culture of Coniothyrium sp., an endophytic fungus isolated from Salsola oppostifolia from Gomera in the Canary Islands. The structures of the new compounds were elucidated by detailed spectroscopic analysis and comparison with reported data. The absolute configurations of coniothyrinones A (5), B (6), and D (8) were determined by TDDFT calculations of CD spectra, allowing the determination of the absolute configuration of coniothyrinone C (7) as well. Coniothyrinones A (5), B (6), and D (8) could be used as ECD reference compounds in the determination of absolute configuration for related tetralone derivatives. This is the first report of anthraquinones and derivatives from an isolate of the genus Coniothyrium sp. These compounds showed inhibitory effects against the fungus Microbotryum violaceum, the alga Chlorella fusca, and the bacteria Escherichia coli and Bacillus megaterium.
Collapse
|
236
|
Jiang HY, Yan LS, Ye J, Pan W, Luo B, Chen ZY, Zou XH, Yao XS. Photonic generation of impulse ultrawideband signals with switchable shapes and polarities based on frequency-to-time mapping. OPTICS LETTERS 2012; 37:5052-5054. [PMID: 23258002 DOI: 10.1364/ol.37.005052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A photonic approach to generate impulse ultrawideband (UWB) signals with switchable shapes and polarities based on the frequency-to-time mapping technique is proposed and demonstrated. UWB monocycle, doublet, and triplet signals with two polarities can be obtained by adjusting the switchable spectrum shaper.
Collapse
|
237
|
Pan B, Chen M, Pan W, Liao W. Histoplasmosis: a new endemic fungal infection in China? Review and analysis of cases. Mycoses 2012; 56:212-21. [PMID: 23216676 DOI: 10.1111/myc.12029] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Histoplasmosis occurs in specific endemic areas, including the mid-western United States, Africa and most of Latin America. Sporadic cases have also been reported in China. The aim of this study was to summarise the epidemiological and clinical data of histoplasmosis in China. We searched the PubMed, CBMdisk and CNKI databases to identify publications related to histoplasmosis in China. Case reports/series on patients with histoplasmosis were included. A comprehensive literature review identified additional cases. The relevant material was evaluated and reviewed. Overall, 300 cases of histoplasmosis were reported in China from 1990 to 2011, and 75% were from regions through which the Yangtze River flows. Most of the patients were autochthonous infections. Of these, 43 patients had pulmonary histoplasmosis and 257 patients had disseminated histoplasmosis. Common underlying diseases included HIV infection, diabetes mellitus and liver diseases. Fever was the most frequently reported clinical feature in disseminated histoplasmosis, followed by splenomegaly and hepatomegaly. Cases of histoplasmosis had a prominent geographical distribution in China. Histoplasmosis should be considered in the diagnosis of patients with relevant symptoms and a history of travel to or residence in these areas.
Collapse
|
238
|
Kuo C, Chu C, Huang C, Chang J, Pan W, Chen L. 157 Blockage of Nrf2/AKR1C Axis Enhanced Therapeutic Efficacy of Oxaliplatin in Oxaliplatin Resistant Gastric Cancer Cells. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71955-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
239
|
Jiang HY, Yan LS, Ye J, Pan W, Luo B, Yao XS. PDM RZ-to-NRZ and NRZ-to-PRZ format conversions using a variable DGD element inside a polarization-diversified loop. OPTICS LETTERS 2012; 37:2535-2537. [PMID: 22743446 DOI: 10.1364/ol.37.002535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A novel scheme for bit-rate-variable polarization-division-multiplexed return-to-zero to nonreturn-to-zero and NRZ to pseudo-return-to-zero format conversions is proposed using a variable differential-group-delay element inside a polarization-diversified loop. Conversion for both 2×10 and 2×12.5 Gbit/s PDM signals are successfully demonstrated with approximately 1 dB additional power penalty by properly adjusting DGD values of the variable DGD element.
Collapse
|
240
|
Wang N, Eckert KA, Zomorrodi AR, Xin P, Pan W, Shearer DA, Weisz J, Maranus CD, Clawson GA. Down-regulation of HtrA1 activates the epithelial-mesenchymal transition and ATM DNA damage response pathways. PLoS One 2012; 7:e39446. [PMID: 22761798 PMCID: PMC3383700 DOI: 10.1371/journal.pone.0039446] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Accepted: 05/21/2012] [Indexed: 12/18/2022] Open
Abstract
Expression of the serine protease HtrA1 is decreased or abrogated in a variety of human primary cancers, and higher levels of HtrA1 expression are directly related to better response to chemotherapeutics. However, the precise mechanisms leading to HtrA1 down regulation during malignant transformation are unclear. To investigate HtrA1 gene regulation in breast cancer, we characterized expression in primary breast tissues and seven human breast epithelial cell lines, including two non-tumorigenic cell lines. In human breast tissues, HtrA1 expression was prominent in normal ductal glands. In DCIS and in invasive cancers, HtrA1 expression was greatly reduced or lost entirely. HtrA1 staining was also reduced in all of the human breast cancer cell lines, compared with the normal tissue and non-tumorigenic cell line controls. Loss of HtrA1 gene expression was attributable primarily to epigenetic silencing mechanisms, with different mechanisms operative in the various cell lines. To mechanistically examine the functional consequences of HtrA1 loss, we stably reduced and/or overexpressed HtrA1 in the non-tumorigenic MCF10A cell line. Reduction of HtrA1 levels resulted in the epithelial-to-mesenchymal transition with acquisition of mesenchymal phenotypic characteristics, including increased growth rate, migration, and invasion, as well as expression of mesenchymal biomarkers. A concomitant decrease in expression of epithelial biomarkers and all microRNA 200 family members was also observed. Moreover, reduction of HtrA1 expression resulted in activation of the ATM and DNA damage response, whereas overexpression of HtrA1 prevented this activation. Collectively, these results suggest that HtrA1 may function as a tumor suppressor by controlling the epithelial-to-mesenchymal transition, and may function in chemotherapeutic responsiveness by mediating DNA damage response pathways.
Collapse
|
241
|
Fonarow GC, Saver JL, Smith EE, Broderick JP, Kleindorfer DO, Sacco RL, Pan W, Olson DM, Hernandez AF, Peterson ED, Schwamm LH. Relationship of National Institutes of Health Stroke Scale to 30-Day Mortality in Medicare Beneficiaries With Acute Ischemic Stroke. J Am Heart Assoc 2012. [DOI: 10.1161/xjaha.111.000034] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
242
|
Stapleton S, Flanary J, Hamblin F, Steinbrueck S, Rodriguez L, Tuite G, Carey C, Storrs B, Lavey R, Fangusaro J, Jakacki R, Kaste S, Goldman S, Pollack I, Boyett J, Kun L, Gururangan S, Jakacki R, Dombi E, Steinberg S, Goldman S, Kieran M, Ullrich N, Widemann B, Goldman S, Fangusaro J, Lulla R, Reinholdt N, Newmark M, Urban M, Chi S, Manley P, Robison N, Kroon HA, Kieran M, Stancokova T, Husakova K, Deak L, Fangusaro J, Gururangan S, Onar-Thomas A, Packer R, Goldman S, Kaste S, Friedman H, Poussaint TY, Kun L, Boyett J, Gudrun F, Tippelt S, Zimmermann M, Rutkowski S, Warmuth-Metz M, Pietsch T, Faldum A, Bode U, Slavc I, Peyrl A, Chocholous M, Kieran M, Azizi A, Czech T, Dieckmann K, Haberler C, Macy M, Kieran M, Chi S, Cohen K, MacDonald T, Smith A, Etzl M, Naranderan A, Gore L, DiRenzo J, Trippett T, Foreman N, Dunkel I, Fisher MJ, Meyer J, Roberts T, Belasco JB, Phillips PC, Lustig R, Cahill AM, Laureano A, Huls H, Somanchi S, Denman C, Liadi I, Khatua S, Varadarajan N, Champlin R, Lee D, Cooper L, Silla L, Gopalakrishnan V, Legault G, Hagiwara M, Ballas M, Brown K, Vega E, Nusbaum A, Bloom M, Hochman T, Goldberg J, Golfinos J, Roland JT, Allen J, Karajannis M, Karajannis M, Bergner A, Giovannini M, Welling DB, Niparko J, Slattery W, Roland JT, Golfinos J, Allen J, Blakeley J, Owens C, Sung L, Lowis S, Rutkowski S, Gentet JC, Bouffet E, Henry J, Bala A, Freeman S, King A, Rutherford S, Mills S, Huson S, McBain C, Lloyd S, Evans G, McCabe M, Lee Y, Bartels U, Tabori U, Jansen L, Mabbott D, Bouffet E, Huang A, Aguilera D, Mazewski C, Fangusaro J, MacDonald T, McNall R, Hayes L, Liu Y, Castellino R, Cole D, Lester-McCully C, Widemann B, Warren K, Robison N, Campigotto F, Chi S, Manley P, Turner C, Zimmerman MA, Chordas C, Allen J, Goldman S, Rubin J, Isakoff M, Pan W, Khatib Z, Comito M, Bendel A, Pietrantonio J, Kondrat L, Hubbs S, Neuberg D, Kieran M, Wetmore C, Broniscer A, Wright K, Armstrong G, Baker J, Pai-Panandiker A, Kun L, Patay Z, Onar-Thomas A, Ramachandran A, Turner D, Gajjar A, Stewart C. CLINICAL TRIALS. Neuro Oncol 2012; 14:i16-i21. [PMCID: PMC3483342 DOI: 10.1093/neuonc/nos096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024] Open
|
243
|
Pan W, Baldwin KW, West KW, Pfeiffer LN, Tsui DC. Spin transition in the ν=8/3 fractional quantum Hall effect. PHYSICAL REVIEW LETTERS 2012; 108:216804. [PMID: 23003291 DOI: 10.1103/physrevlett.108.216804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Indexed: 06/01/2023]
Abstract
We present here the results from a density dependent study of the activation energy gaps of the fractional quantum Hall effect states at Landau level fillings ν=8/3 and 7/3 in a series of high quality quantum wells. In the density range from 0.5×10(11) to 3×10(11) cm(-2), the 7/3 energy gap increases monotonically with increasing density, supporting its ground state being spin polarized. For the 8/3 state, however, its energy gap first decreases with increasing density, almost vanishes at n~0.8×10(11) cm(-2), and then turns around and increases with increasing density, clearly demonstrating a spin transition.
Collapse
|
244
|
Song S, Fonarow G, Pan W, Olson D, Hernandez A, Peterson E, Reeves M, Smith E, Schwamm L, Saver J. Improved Clinical Outcomes in Medicare Beneficiaries with Acute Ischemic Stroke during Initial Implementation of the Get with the Guidelines-Stroke Program 2003-2008 (S19.003). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.s19.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
245
|
Yi AL, Yan LS, Luo B, Pan W, Ye J, Chen ZY, Lee JH. Simultaneous all-optical RZ-to-NRZ format conversion for two tributaries in PDM signal using a single section of highly nonlinear fiber. OPTICS EXPRESS 2012; 20:9890-9896. [PMID: 22535081 DOI: 10.1364/oe.20.009890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Simultaneous all-optical RZ-OOK to NRZ-OOK format conversion for two tributaries in PDM signal is demonstrated utilizing a single section of highly nonlinear fiber through polarization nonlinear loop mirror configuration. Less than 1-dB power penalty is achieved in a 2 × 12.5-Gb/s PDM system, and only 1.4-dB SNR penalty is obtained in a 2 × 40-Gb/s PDM system.
Collapse
|
246
|
Song S, Fonarow G, Pan W, Olson D, Hernandez A, Peterson E, Reeves M, Smith E, Schwamm L, Saver J. Improved Clinical Outcomes in Medicare Beneficiaries with Acute Ischemic Stroke during Initial Implementation of the Get with the Guidelines-Stroke Program 2003-2008 (IN2-2.002). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.in2-2.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
247
|
Li M, Liao Y, Chen M, Pan W, Weng L. Antifungal susceptibilities of Cryptococcus species complex isolates from AIDS and non-AIDS patients in Southeast China. Braz J Infect Dis 2012. [DOI: 10.1590/s1413-86702012000200012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
248
|
Li M, Liao Y, Chen M, Pan W, Weng L. Antifungal susceptibilities of Cryptococcus species complex isolates from AIDS and non-AIDS patients in Southeast China. Braz J Infect Dis 2012; 16:175-9. [DOI: 10.1016/s1413-8670(12)70301-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 12/11/2011] [Indexed: 11/29/2022] Open
|
249
|
Pan W, Coatrieux G, Cuppens N, Cuppens F, Roux C. Reversible watermarking based on invariant image classification and dynamical error histogram shifting. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2012; 2011:4477-80. [PMID: 22255333 DOI: 10.1109/iembs.2011.6091110] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In this article, we present a novel reversible watermarking scheme. Its originality stands in identifying parts of the image that can be watermarked additively with the most adapted lossless modulation between: Pixel Histogram Shifting (PHS) or Dynamical Error Histogram Shifting (DEHS). This classification process makes use of a reference image derived from the image itself, a prediction of it, which has the property to be invariant to the watermark addition. In that way, watermark embedded and reader remain synchronized through this image of reference. DEHS is also an original contribution of this work. It shifts predict-errors between the image and its reference image taking care of the local specificities of the image, thus dynamically. Conducted experiments, on different medical image test sets issued from different modalities and some natural images, show that our method can insert more data with lower distortion than the most recent and efficient methods of the literature.
Collapse
|
250
|
Bushnell CD, Olson DM, Zhao X, Pan W, Zimmer LO, Goldstein LB, Alberts MJ, Fagan SC, Fonarow GC, Johnston SC, Kidwell C, LaBresh KA, Ovbiagele B, Schwamm L, Peterson ED. Secondary Preventive Medication Persistence and Adherence One-Year After StrokeStroke (copy of NEUROLOGY/2011/379727, keeping 5 of 15 authors): One Year Medication Persistence Following Stroke. Neurology 2012. [DOI: 10.1212/3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|