Sivakumar A. L. Krishnasamy

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OBJECTIVE To document the corneal astigmatism that occurs with macular translocation after scleral infolding surgery. DESIGN Retrospective case series of a nonrandomized clinical trial. PARTICIPANTS Eight consecutive age-related macular degeneration patients (eight eyes) with choroidal neovascularization who underwent macular translocation with scleral(More)
From July 1985 through March 1987, 44 consecutive patients with supratentorial, nonmetastatic anaplastic astrocytoma (AA) and glioblastoma multiforme (GBM) were treated with whole brain photon irradiation with concomitant neutron boost at the University of Chicago. All patients had biopsy proven disease and surgery ranged from biopsy to total gross(More)
Twenty-three patients with regionally advanced non-small cell lung cancer (NSCLC) (Stage III) were treated with continuous infusion 5-fluorouracil (5-FU) augmented by high-dose oral leucovorin and hydroxyurea and concomitant radiotherapy. This chemoradiotherapy regimen was administered during 5 days of every other week for six cycles (total radiation dose,(More)
The survival rate for patients with malignant gliomas is poor. We describe the results of a prospective study using concomitant chemoradiotherapy, neutron boost, and adjuvant chemotherapy for patients with malignant gliomas. Forty-two patients with anaplastic astrocytoma (AA) and glioblastoma multiforme (GBM) were treated with postoperative photon radiation(More)
Long-term survival of patients with high-grade gliomas remains extremely poor. The main reason for such an outcome is local failure, or recurrence, after surgery and/or radiotherapy. Higher doses of radiation may result in decreased local failure rates provided that the location (and extent) of gross tumor and microscopic disease can be defined accurately.(More)
PURPOSE With on-line portal imaging devices and image registration tools, the verification of radiation field position prior to each treatment becomes technically feasible. In this paper, we analyze the impact of pre-treatment verification and field position adjustment on target coverage and normal tissue sparing. METHODS AND MATERIALS Port films were(More)
PURPOSE To report the acute effects of laser in situ keratomileusis (LASIK) on the corneal endothelium. METHODS Twenty eyes of 10 consecutive patients (mean age, 38.1 +/- 10.84 years) underwent bilateral simultaneous LASIK for myopic astigmatism (spherical equivalent ranging from -1.75 to -7.13 diopters) without any complications. Each eye was evaluated(More)
Biomodeling is an important method to analyse the human anatomy. A spatially accurate three dimensional (3D) biomodel recreated from a computed tomography (CT) scans allow for various extended use. One major use would be as an instructional kit to train junior surgeons because of its exact replica of the actual anatomy in positions relative to each other.(More)
Pericardial cysts are uncommon mediastinal lesions that are usually congenital in origin. Patients are usually asymptomatic and the cysts are generally discovered on routine radiography for unrelated purposes. This case illustrates a symptomatic presentation of a haemorrhagic pericardial cyst in which radiographic, echocardiographic and multislice (MRI and(More)