김범준 교수

Readout electronics for the scintillation bar tracking detector (SciBar) in the K2K neutrino oscillation experiment has been developed. SciBar has 14 336 scintillator bars in total. The deposited energy and timing of particles from neutrino interactions in the scintillator bars are measured by 64-channel multianode photo-multiplier tubes (MAPMTs). Compact custom-designed electronics to record the MAPMT signals were developed, consisting of front-end circuit boards attached to each MAPMT and back

BackgroundLow-intensity focused ultrasound (LIFU), a non-invasive targeted brain stimulation technology, has shown promise for therapeutic applications in Alzheimer's disease (AD) patients. Despite its potential, the implications of repeated LIFU neuromodulation in AD patients remain to be investigated.ObjectiveThis pilot study evaluated the safety and potential to improve cognition and functional connectivity following repeated LIFU treatment in AD patients.MethodsTen early-stage AD patients un

Readout electronics for the scintillation bar tracking detector (SciBar) in the K2K neutrino oscillation experiment has been newly developed. Its purpose is to make a readout system for multi-anode photo-multiplier (MAPMT) be compact. A combination of ASICs (VA32HDR11 and TA32CG) is employee to multiplex pulse-height information from each anode of a 64-channel MAPMT and to make a fast triggering signal. A frontend circuit board to be attached to MAPMT is designed to generate biases for ASICs and

A rotating coil system mounted on a printed circuit board (PCB) was developed to precisely characterize multipole magnetic fields in magnets for Korea-4GSR project, which is constructing a 4 th -generation synchrotron light source in Korea. The system integrates a PCB-based coil shaft, high-resolution rotary encoder, digital integrator, and mercury slip ring, enabling accurate and repeatable field measurements. The accuracy and precision of the system were quantified by prototype quadrupole magn

BACKGROUND AND PURPOSE: Isolated cervical dystonia is characterized by sustained or intermittent neck movements caused by involuntary muscle contractions, resulting in abnormal movements or postures of cervical areas. We measured altered regional cerebral blood flow (rCBF) in patients with idiopathic cervical dystonia compared to healthy controls and explored the correlation between dystonia severity and rCBF patterns. METHODS: A total of 38 patients with isolated cervical dystonia and 29 health

Background: Nicergoline is an ergoline derivative and vessel dilator that is used to treat cognitive deficits in cerebrovascular disease and various forms of dementia including vascular dementia (VaD).Although therapeutic effects of nicergoline have been established, little is known about its effects on cerebral perfusion in patients with VaD.We conducted this longitudinal study to evaluate the role of nicergoline in regional cerebral blood flow (rCBF) and cognitive function of VaD patients usin