BACKGROUND The predominant treatment modality for meningioma is surgical resection. However, gamma knife radiosurgery is also an important treatment modality for meningioma that is small or cannot be completely removed because of its location. In this study, we evaluated the effectiveness and long-term results of radiosurgical treatment for meningioma in our institution. METHODS We studied 62...

No: 687 Health and Hygiene 329 EVALUATION OF THE IMPACT OF TABLET SPLITTING ON THE ACCURACY OF DRUG DOSING H.S. Sellahewa and H.M.D.R. Herath* Department of Pharmacy, Faculty of Allied Health Sciences, University of Peradeniya, Sri Lanka *[email protected] Tablet splitting is commonly used in pharmacy practice. There are many reasons to split tablets such as to get the prescribed dose, to ad...

The accuracy of the dose planning system (Leksell GammaPlan), used in Gamma Knife (type B) radiosurgery at extreme irradiation depths, was verified using the Monte Carlo technique. EGS4 Monte Carlo calculations were employed to calculate the dose distribution along the x, y and z axes for an irradiation relatively shallow in a spherical bony cavity water phantom. Two different sizes of the coll...

Gamma-Knife became an established therapeutic alternative for selected cases of vestibular schwannomas (benign tumors rooting from Scwann cells of vestibular nerve). However, the long term results and effects on the tumor and surrounding brain are still a matter of research. We analyze the imagistic findings in the patients with vestibular scwannomas treated with gamma-knife radiosurgery in the...

BACKGROUND Low-grade gliomas are uncommon primary brain tumors, located more often in the posterior fossa, optic pathway, and brain stem and less commonly in the cerebral hemispheres. CASE PRESENTATIONS Two patients with diagnosed recurrent cystic pilocytic astrocytoma critically located within the brain (thalamic and brain stem) were treated with gamma knife surgery. Gamma knife surgery (GKS...

We study the query complexity of cake cutting and give lower bounds for computing approximately envy-free, perfect, and equitable allocations with the minimum number of cuts. These lower bounds are tight for three players in the case of envy-free allocations and for two players in the case of perfect and equitable allocations. We also formalize moving knife procedures and show that a large subc...

BACKGROUND Previous research has suggested that the silicon BD Atomic Edge knife has superior performance characteristics when compared to a metal knife and performance similar to diamond knife when making various incisions. This study was designed to determine whether a silicon accurate depth knife has equivalent performance characteristics when compared to a diamond limbal relaxing incision (...

SEVERAL years ago a description was published of a new technique in performing the three-snip operation to relieve epiphora due to stenosis of the lacrimal punctum (Graves, 1926). The method was to dilate the punctum, insert a small grooved director, place the back of a large Ziegler knife in the groove, and then, by pushing it inwards towards the nose, to incise the upper edge of the canalicul...