Search results for "MULTIFOCAL"

showing 10 items of 106 documents

Combined hepatectomy and radiofrequency ablation for multifocal hepatocellular carcinoma: a case report

2009

Introduction: At the present time, the best possible choice for the local management of a multifocal hepatocellular carcinoma (HCC) developing on liver cirrhosis is multimodal treatment of the disease. Combined approach based on simultaneous radiofrequency ablation (RFA) together with limited surgical resection represents a valid choice of treatment. Case presentation: A 75-year-old white female patient affected of HCV-associated cirrhosis in BChild-Pugh’s functional class A5, developed a bifocal HCC. The patient had undergone a limited surgical resection together with simultaneous RFA, without intraoperative and postoperative surgical complications. At 36 months after surgery, still shows …

Medicine(all)medicine.medical_specialtyCirrhosisPatient affectedbusiness.industryRadiofrequency ablationmedicine.medical_treatmentWhite femaleGeneral MedicineHepatic resection multifocal hepatocellular carcinoma radiofrequency ablationmedicine.diseaseCombined approachdigestive system diseasesSurgerylaw.inventionSettore MED/18 - Chirurgia GeneralelawHepatocellular carcinomaCase reportmedicineHepatectomybusinessDISEASE RELAPSECases Journal
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Scanning microscopy with spatial sampling of the detector plane

2013

We present the implementation of a confocal scanning microscope in which the signal detection is performed through a matrix sensor, specifically, a CCD camera. This kind of detection has several advantages over the conventional detection in confocal microscopes. One of those advantages is the possibility to recover information of the sample that vanishes when the confocal image is directly acquired by the integration of light into a signal. We demonstrate the applicability of the system which allows implementing super-resolution techniques in a very easy manner.

MicroscopeMaterials sciencebusiness.industryMechanical EngineeringConfocalDetectorComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONScanning confocal electron microscopySignalAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialslaw.inventionOpticsSampling (signal processing)Multifocal plane microscopylawDetection theorybusinessEngineering (miscellaneous)Optica Pura y Aplicada
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Retinal straylight in patients with monofocal and multifocal intraocular lenses

2007

Purpose To determine the differences in retinal straylight perceived by patients with monofocal intraocular lenses (IOLs) and patients with multifocal IOLs. Setting Vissum-Instituto de Oftalmologico de Alicante, Alicante, Spain. Methods In this prospective study, contrast sensitivity and retinal straylight were measured prospectively 6 months postoperatively in 67 eyes of 40 patients with a monofocal or multifocal IOL. In the monofocal group, a ThinOptX IOL (ThinOptX, Inc.) was implanted in 12 eyes and an Acri.Smart 48 S IOL (Acri.Tec) in 20 eyes. In the multifocal IOL group, a ReZoom IOL (Advanced Medical Optics) was implanted in 13 eyes and a ReSTOR IOL (Alcon Laboratories) in 22 eyes. Re…

Miosismedicine.medical_specialtyLightPseudophakiagenetic structuresmedicine.medical_treatmentmedia_common.quotation_subjectIntraocular lensRetinaPupilGlareContrast Sensitivitychemistry.chemical_compoundLens Implantation IntraocularOphthalmologymedicineHumansScattering RadiationContrast (vision)Prospective StudiesAgedmedia_commonAged 80 and overLenses IntraocularPhacoemulsificationbusiness.industryGlare (vision)RetinalPhacoemulsificationMiddle AgedMultifocal intraocular lensequipment and supplieseye diseasesSensory SystemsOphthalmologychemistryOptometrySurgerysense organsmedicine.symptombusinessJournal of Cataract and Refractive Surgery
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Imaging quality of multifocal intraocular lenses: automated assessment setup

2012

[EN] Purpose: A new technique for the assessment of the optical quality of multifocal intraocular lenses (MIOLs) under monochromatic and polychromatic illumination is presented. Methods: The system provides, in a totally automated procedure, the modulation transfer function (MTF) of the lens under test for different axial positions of the object. The artificial eye admits different artificial corneas, to optimise the axial resolution in the sampling of the MTF of the MIOL under test, and different pupils, to test the dependence of the optical performance of the MIOL on the eye pupil diameter. Results: The performance and sensitivity of the apparatus is tested with different commercial MIOLs…

Models AnatomicOptics and Photonicsbusiness.product_categorygenetic structuresComputer scienceImaging qualityIntraocular lenseslaw.inventionOpticsSampling (signal processing)Through-focus MTFlawOptical transfer functionHumansComputer visionSensitivity (control systems)Multifocal lensesLightingLenses IntraocularOptical setupbusiness.industryMultifocal intraocular lensMultifocal lenseseye diseasesSensory SystemsLens (optics)OphthalmologyImaging qualityFISICA APLICADAsense organsArtificial intelligenceMonochromatic colorbusinessOptometry
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IOL Multifocali di II e III generazione: performance visiva e capacità di lettura

2011

Multifocal IOL reading speed contrast sensitivity
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Comfort visivo e indipendenza da occhiali con IOLs multifocali di nuova generazione: follow-up a 1 anno

2008

Multifocal IOLs presbyopia cataract
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High myopic patients with and without foveoschisis: morphological and functional characteristics.

2020

Purpose: Myopic foveoschisis (MF) is characterized by the splitting of the retinal layers in the fovea of patients with high myopia (HM). MF may progress into foveal detachment or macular hole formation with consequent loss of central vision. The aim of this study is to investigate morphological and functional changes of the macular region in myopic subjects with and without foveoschisis. Design: Observational, cross-sectional, comparative study. Methods: Forty-eight patients with HM and 24 healthy controls were evaluated by spectral domain-optical coherence tomography (SD-OCT), multifocal electroretinography (mfERG) and microperimetry (MP-1) tests to assess macular thickness, functionality…

Myopic foveoschisisMalemedicine.medical_specialtyFovea Centralisgenetic structuresRetinoschisisVisual AcuityRetinoschisisFoveoschisisRetina03 medical and health scienceschemistry.chemical_compound0302 clinical medicinePhysiology (medical)OphthalmologyHigh myopiaVitrectomyPost-hoc analysismedicineChi-square testElectroretinographyHumansMacular holePathological myopiabusiness.industryMultifocal electroretinography (mfERG)RetinalMiddle Agedmedicine.diseaseRetinal Perforationseye diseasesSensory SystemsSpectral domain-optical coherence tomography (SD-OCT)high myopia; microperimetry (MP-1); multifocal electroretinography (mfERG); myopic foveoschisis; pathological myopia; retinoschisis; spectral domain-optical coherence tomography (SD-OCT)OphthalmologyCross-Sectional StudieschemistryMyopia Degenerative030221 ophthalmology & optometryMicroperimetry (MP-1)Visual Field TestsFemalesense organsAnalysis of varianceVisual FieldsbusinessMicroperimetry030217 neurology & neurosurgeryTomography Optical CoherenceDocumenta ophthalmologica. Advances in ophthalmology
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Chemotherapy for Urinary Bladder Cancer: Developments, Trends, and Future Perspectives

1982

The role of chemotherapy in the management of transitional bladder tumors can conveniently be considered under two principal headings — topical (intracavitary) and sytemic chemotherapy, as the indications for these modalities are distinctly different. The intent of topical administration of cytoxic agents may be (1) prophylactic to prevent recurrences or new occurrences after TUR; (2) curative to clear the bladder of extensive non-resectable multifocal disease, or to control carcinoma in situ.

OncologyChemotherapymedicine.medical_specialtyUrinary bladderBladder cancerUrinary Bladder Cancerbusiness.industrymedicine.medical_treatmentCarcinoma in situmedicine.diseasemedicine.anatomical_structureMultifocal diseaseInternal medicineBladder tumorSuperficial bladder cancerMedicinebusiness
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No evidence of beneficial effects of plasmapheresis in natalizumab-associated PML

2017

Objective:To examine retrospectively the effects of plasmapheresis (PLEX) on the survival and clinical outcomes of patients with multiple sclerosis (MS) and natalizumab (NTZ)–associated progressive multifocal leukoencephalopathy (PML).Methods:The medical literature was searched for the terms natalizumab and progressive multifocal leukoencephalopathy. A total of 193 international and 34 Italian NTZ-PML cases were included. Clinical outcome was determined by comparing the patients' clinical status at PML diagnosis with status after PML resolution. The effects on survival and clinical outcome of PLEX, sex, age, country, pre-PML Expanded Disability Status Scale score, NTZ infusion number, prior…

OncologyMaleJC virus030204 cardiovascular system & hematologymedicine.disease_causeLeukoencephalopathyDisability Evaluationneurology (clinical); progressive multifocal leukoencephalopathy; reconstitution inflammatory syndrome; multiple-sclerosis0302 clinical medicineNatalizumabImmunologic FactorLeukoencephalopathyRetrospective StudieMultiple SclerosiMedicinePlasmapheresiAdult; Disability Evaluation; Female; Humans; Immunologic Factors; Leukoencephalopathy Progressive Multifocal; Male; Middle Aged; Multiple Sclerosis; Natalizumab; Plasmapheresis; PubMed; Retrospective Studies; Statistics Nonparametric; Treatment OutcomeProgressive multifocal leukoencephalopathyNatalizumabStatisticsLeukoencephalopathy Progressive MultifocalPlasmapheresisMiddle AgedTreatment OutcomeFemaleSettore MED/26 - Neurologiamedicine.drugHumanAdultmedicine.medical_specialtyPubMedMultiple SclerosisProgressive MultifocalStatistics Nonparametric03 medical and health sciencesImmune reconstitution inflammatory syndromeInternal medicineHumansImmunologic FactorsNonparametricprogressive multifocal leukoencephalopathy multiple sclerosis side effectRetrospective StudiesExpanded Disability Status Scalebusiness.industryMultiple sclerosisRetrospective cohort studymedicine.diseaseImmunologyNeurology (clinical)business030217 neurology & neurosurgery
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In vitro optical quality comparison of 2 trifocal intraocular lenses and 1 progressive multifocal intraocular lens.

2015

Purpose To evaluate the optical quality of 3 multifocal intraocular lenses (IOLs): the Mini Well Ready progressive multifocal aspheric IOL, the AT LISA trifocal diffractive IOL, and the Finevision full diffractive trifocal IOL. Setting University of Valencia, Valencia, Spain. Design Experimental study. Methods An instrument designed for measuring real-time modulation transfer function (MTF) and IOL power was used to measure the optical quality of each IOL for 3.0 mm and 4.5 mm apertures. This instrument measures both sagittal and tangential MTFs. The optical quality of each IOL was evaluated with the MTF, through-focus MTF, defocus tolerance, Strehl ratio MTF, and relative percentage of lig…

Optics and PhotonicsOptical PhenomenaComputer sciencemedicine.medical_treatmentCataract ExtractionProsthesis DesignRefraction Ocular03 medical and health sciencesNear vision0302 clinical medicineLens Implantation IntraocularOptical transfer functionmedicineProsthesis designHumansLenses IntraocularStrehl ratioCataract surgeryMultifocal intraocular lensModels TheoreticalSensory SystemsOptical qualityOphthalmologyIntraocular lenses030221 ophthalmology & optometryOptometrySurgery030217 neurology & neurosurgeryJournal of cataract and refractive surgery
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