Dosimetric Analysis of Neural and Vascular Structures in Skull Base Tumors Treated with Stereotactic Radiosurgery.

Objective To examine the relationship between the prescribed target dose and the dose to healthy neurovascular structures in patients with vestibular schwannomas treated with stereotactic radiosurgery (SRS). Study Design Case series with chart review. Setting SRS center from 2011 to 2013. Subjects Twenty patients with vestibular schwannomas treated at the center from 2011 to 2013. Methods Twenty patients with vestibular schwannomas were included. The average radiation dose delivered to healthy neurovascular structures (eg, carotid artery, basilar artery, facial nerve, trigeminal nerve, and cochlea) was analyzed. Results Twenty patients with vestibular schwannomas who were treated with fused computed tomography/magnetic resonance imaging-guided SRS were included in the study. The prescribed dose ranged from 10.58 to 17.40 Gy over 1 to 3 hypofractions to cover 95% of the target tumor volume. The mean dose to the carotid artery was 5.66 Gy (95% confidence interval [CI], 4.53-6.80 Gy), anterior inferior cerebellar artery was 8.70 Gy (95% CI, 4.54-12.86 Gy), intratemporal facial nerve was 3.76 Gy (95% CI, 3.04-4.08 Gy), trigeminal nerve was 5.21 Gy (95% CI, 3.31-7.11 Gy), and the cochlea was 8.70 Gy (95% CI, 7.81-9.59 Gy). Conclusions SRS for certain vestibular schwannomas can expose the anterior inferior cerebellar artery (AICA) and carotid artery to radiation doses that can potentially initiate atherosclerotic processes. The higher doses to the AICA and carotid artery correlated with increasing tumor volume. The dose delivered to other structures such as the cochlea and intratemporal facial nerve appears to be lower and much less likely to cause immediate complications when shielded

Islam-Lokal dan Lokal-Islam: Menonton Ujang Bustomi dan Om Hao di Youtube pada Masa Pandemi

This article aims to describe religious expression on YouTube during the Covid 19 pandemic. Religious activities were relatively limited to social restriction policies with all their dynamics. Pandemic encouraged some people, they are Ujang Busthomi and Om Hao, to express their religiosity in real and on YouTube. The type of this research is qualitative with the data search method using YouTube observations on Kang Ujang Busthomi, account of Ujang Busthomi, and Kisah Tanah Jawa, account of Om Hao. This article finds that the pandemic situation encourages religious actors to express their religious expression awareness through YouTube. The variety of religious expression on YouTube, base on Ujang Busthomi and Om Hao account, revolves around two model. First, the expression of Islam-local style. Second, expression of local-Islam style. [Artikel ini bertujuan untuk mendeskripsikan ekspresi keagamaan di YouTube pada masa pandemi. Selama pandemi, pembatasan sosial dengan segala dinamikanya mendorong sebagian orang mengekspresikan religiusitasnya tidak terbatas di ruang-ruang sosial nyata, namun juga di media sosial seperti YouTube. Keterbukaan ini mendorong munculnya ekspresi keagamaan dari tokoh penekun dunia supranatural, Ujang Busthomi dan Om Hao, yang sebelumnya lebih sering diungkapkan tidak secara terbuka. Data artikel ini didapatkan dengan menggunakan observasi akun YouTube Kang Ujang Busthomi dan Kisah Tanah Jawa. Penelitian ini menemukan bahwa situasi pandemi mendorong umat beragama mengekspresikan dimensi keagamaan dari kehidupan mereka secara lebih terbuka dan virtual. Adapun ekspresi keagamaan dua tokoh yang dikaji dapat dibaca menjadi dua model. Pertama, ekspresi keagamaan Islam-lokal. Kedua, ekspresi keagamaan lokal-Islam.