関連する実験動画

Updated: Feb 14, 2026

Focussed Ion Beam Milling and Scanning Electron Microscopy of Brain Tissue
08:57

Focussed Ion Beam Milling and Scanning Electron Microscopy of Brain Tissue

Published on: July 6, 2011

28.8K

鉛筆ビームスキャニングカーボンイオンビームセラピーのプロトン日QAプロトタイプの実現可能性

Matthias Witt1,2,3, Veronika Flatten4, Andreas Schönfeld4

  • 1Institute of Medical Physics and Radiation Protection, University of Applied Science, Gießen, Germany.

Journal of applied clinical medical physics
|February 12, 2026
PubMed
まとめ

新しいプロトン品質保証 (QA) 装置は,炭素イオンビーム療法における高速で多パラメータのQAを実現することが可能であることが示されました. これにより,毎日のQA手順が効率化され,測定時間は15〜20分から約5分に短縮されました.

キーワード:
PBS QA QA QA QA QA QA QA QA QA QA QA QA QA QA QA QA QA PBS QA QA QA QA QA炭素イオン療法とは,炭素イオン療法です.毎日QAを行っています.

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関連する概念動画

Beams01:30

Beams

Beams are integral components of structural engineering and construction, designed to support loads applied at various points along their length. These long, straight members can be classified based on geometry, cross-section, support type, and equilibrium condition.
Based on geometry, beams can be straight, tapered, or curved. Straight beams are the most common type and have a constant cross-section throughout their length. Tapered beams, on the other hand, have a varying cross-section along...
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Deflection of a Beam01:19

Deflection of a Beam

Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...
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Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
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Principal Stresses in a Beam01:11

Principal Stresses in a Beam

In prismatic beams subject to arbitrary transverse loading, It is essential to analyze the interaction between shear forces and bending moments in order to understand stress distribution and ensure structural integrity. The highest normal or bending stress occurs at the outer fibers of the beam, decreasing linearly to zero at the neutral axis. In contrast, shear stress peaks at the neutral axis and diminishes toward the outer surfaces.
Analyzing principal stresses is crucial, especially in...
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Beams with Symmetric Loadings01:15

Beams with Symmetric Loadings

The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...
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Beams with Unsymmetric Loadings01:17

Beams with Unsymmetric Loadings

Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
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