Keisuke Masuda

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STUDY DESIGN A retrospective study. OBJECTIVE The aim of this study was to determine the incidence of increased segmental range of motion (ROM) after laminoplasty and to clarify whether increased ROM is associated with spondylolisthesis. Finally, we explored the effect of increased segmental ROM on clinical results. SUMMARY OF BACKGROUND DATA Cervical(More)
OBJECTIVE To design, build, and evaluate an animal PET scanner, which can be used with non-human primates under conscious condition, incorporating flat-panel position-sensitive photomultiplier tubes (PS-PMTs). METHODS The system contains 30 detector modules, each having two PS-PMTs and 16×18 lutetium–yttrium oxyortho-silicate scintillation crystal arrays.(More)
STUDY DESIGN Case-control study. PURPOSE To identify the characteristics of candidate indexes for early detection of surgical site infection (SSI). OVERVIEW OF LITERATURE SSI is a serious complication of spinal instrumentation surgery. Early diagnosis and treatment are crucial for the welfare of the patient postoperation. METHODS We retrospectively(More)
STUDY DESIGN Case control study. PURPOSE To identify the most significant laboratory marker for early detection of surgical site infection (SSI) using multiple logistic regression analysis. OVERVIEW OF LITERATURE SSI is a serious complication of spinal instrumentation surgery. Early diagnosis and treatment are crucial. METHODS We retrospectively(More)
BACKGROUND CONTEXT During spine surgery, the spinal cord is electrophysiologically monitored via transcranial electrical stimulation of motor-evoked potentials (TES-MEPs) to prevent injury. Transcranial electrical stimulation of motor-evoked potential involves the use of either constant-current or constant-voltage stimulation; however, there are few(More)
STUDY DESIGN A case-control study. OBJECTIVE The objective of this study is to identify biochemical markers for surgical site infection (SSI) in posterior instrumented spinal fusion that are not affected by operative circumstances and to determine diagnostic cutoffs for these markers. SUMMARY OF BACKGROUND DATA Numerous biochemical markers may be used(More)