Digital subtraction angiography (DSA) の三次元画像やslab maximum intensity projection (MIP) 画像に加え, DSAとMRIやCTとのfusion画像により, 血管と脳・神経や骨構造との関係性が明瞭に描出可能となり, 血管機能解剖の理解が容易となった. 本稿では, 各種疾患の具体例を示しながら, われわれが行っている臨床例の実際を紹介したい. これら最新の診断技術と解剖を熟知した血管内治療医が詳細な術前診断を行うことによって病態理解が深まり, 開頭術を含む脳神経外科全体の治療成績が向上することが期待される.

Manufacturing industry faces new challenges with the emergence of need for production small batches personalized parts. Such methods demand a capability to integrate multiple machining operations in one manufacturing process reduce setup and calibration time tooling costs. This requirement is especially challenging difficult-to-machine materials such as glass, since there exist only limited num...

Metal machining is one of the most important manufacturing processes in today’s production sector. The tools used have been developed over years to improve their performance, by reducing cutting forces, friction coefficient, and heat generated during process. Several cooling systems emerged as an effective way remove excessive from chip-tool contact region. In recent years, introduction nano mi...

Cutting processes can be used in batch production of polygonal bars with special features. In this paper, a new form of broaching process for cutting of hexagonal bars from raw round bars is discussed. Due to lack of rolled or drawn raw material, the final product is made of AISI 316L stainless steel bars having appropriate initial size. In this method, a fixed die is used as a tool, and by app...

In today’s era of plasma and laser cutting, machines using oxy-acetylene flame are also meritorious due to their simplicity and cost effectiveness. The objective to devise a Computer controlled Oxy-Fuel profile cutting machine arose from the increasing demand for metal cutting with respect to edge quality, circularity and lesser formation of redeposit material. The System has an 8 bit micro con...

Elliptical vibration cutting technology is well-known for its excellent performance in ultraprecision machining of steel materials with single crystal diamond tools. This paper presents two approaches to attain high-performance microand macro-scale sculpturing for steel materials by utilizing elliptical vibration cutting. In order to attain free-form sculpturing in macro-scale, a 4-axis control...