Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Motion Of A Charged Particle In A Magnetic Field01:22

Motion Of A Charged Particle In A Magnetic Field

5.2K
A charged particle experiences a force when moving through a magnetic field. Consider the field to be uniform and the charged particle to move perpendicular to it. If the field is in a vacuum, the magnetic field is the dominant factor determining the motion. Since the magnetic force is perpendicular to the direction of motion, a charged particle follows a curved path. The particle continues to follow this curved path until it forms a complete circle. Another way to look at this is that the...
5.2K
Relative Motion Analysis - Velocity01:24

Relative Motion Analysis - Velocity

429
A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
429
Relative Velocity in One Dimension01:10

Relative Velocity in One Dimension

8.2K
The understanding of the concept of reference frames is essential to discuss relative motion in one or more dimensions. When we say that an object has a certain velocity, we must state the velocity with respect to a given reference frame. In most examples, this reference frame has been Earth. For instance, if a statement reads that a person is sitting in a train moving at 10 m/s east, then it implies that the person on the train is moving relative to the surface of Earth at this velocity,...
8.2K
Simplified Synchronous Machine Model01:30

Simplified Synchronous Machine Model

328
The Synchronous Machine Model is a fundamental tool in analyzing and ensuring the transient stability of power systems. This model simplifies the representation of a synchronous machine under balanced three-phase positive-sequence conditions, assuming constant excitation and ignoring losses and saturation. The model is pivotal for understanding the behavior of synchronous generators connected to a power grid, particularly during transient events.
In this model, each generator is connected to a...
328
Relative Velocity in Two Dimensions01:11

Relative Velocity in Two Dimensions

7.6K
Relative velocity is the velocity of an object as observed from a particular reference frame, or the velocity of one reference frame with respect to another reference frame. The concept of relative velocity can be used to describe motion in two dimensions. Consider a particle P and two reference frames S and S′. The position of the origin of S′ as measured in S is , the position of P as measured in S′ is , and the position of P as measured in S is , which can be evaluated by...
7.6K
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

328
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
328

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Comparison of nanopore sequencing, MethylationEPIC array, and EM-Seq for DNA methylation detection.

Computational biology and chemistry·2026
Same author

Postoperative anlotinib plus radiotherapy in patients with newly diagnosed, unmethylated O<sup>6</sup>-methylguanine-DNA methyltransferase glioblastoma: A single-arm, phase 2 study.

Cancer·2026
Same author

Placental toxic metal concentrations and preterm birth: Modification by social stressors.

Reproductive toxicology (Elmsford, N.Y.)·2026
Same author

Proton therapy treatment planning via the alternating direction method of multipliers: a tutorial review.

Biomedical physics & engineering express·2026
Same author

Fabrication of RADA32/Ngf_EE/MSCs composite hydrogel and its protective mechanism against radiation-induced ototoxicity.

iScience·2026
Same author

Complete response of a giant metastatic neck mass in tonsillar squamous cell carcinoma achieved with radiotherapy combined with immunotherapy: a case report.

Frontiers in oncology·2026

関連する実験動画

Updated: Sep 9, 2025

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
08:34

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

20.5K

プロトン・アーク・ゲントリーの双方向スキャンベースの速度スケジューリングアルゴリズム

Shiyi Zhou1, Qingkun Fan1, Yujia Qian2

  • 1School of Mathematics and Statistics, Wuhan University, No. 299, Bayi Road, Wuchang District, Wuhan, Hubei, 430072, CHINA.

Physics in medicine and biology
|September 2, 2025
PubMed
まとめ

新しい双方向スキャニングベースのゲントリー速度スケジューリングアルゴリズム (BDSSPArc) は,スポットスキャニングプロトンアークセラピー配信効率を改善します. この方法は処理時間を短縮し,より良いSPArc計画のためにゲントリー速度の滑らかさを高めます.

キーワード:
双方向スキャンゲントリー速度スケジューリング濃度調節プロトン療法

さらに関連する動画

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.4K
Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
09:01

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Published on: April 4, 2017

8.7K

関連する実験動画

Last Updated: Sep 9, 2025

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
08:34

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

20.5K
Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.4K
Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
09:01

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Published on: April 4, 2017

8.7K

科学分野:

  • 医学物理学
  • 放射線腫瘍学
  • 癌 の 治療

背景:

  • スポットスキャニングプロトンアーチ療法 (SPArc) は,適合的な用量配分を提供しますが,効率的な投与が必要です.
  • ゲントリー速度スケジューリングは,SPArc処理の提供を最適化し,ゲントリーのスムーズな回転を確保するために重要です.
  • 現在の方法では,SPArcの機械的および臨床的な要求を完全に満たすことはできません.

研究 の 目的:

  • 新しい双方向スキャンベースのゲントリー速度スケジューリングアルゴリズム,BDSSPArcを導入し,評価する.
  • 配送効率を向上させ,SPArcプランのゲントリー速度プロフィールを改善します.
  • 機械的および臨床的要件を満たすようにします.

主な方法:

  • BDSSPArcアルゴリズムは,二方向スキャンを用いて,照射とエネルギー層のスイッチングのための最大可能なゲントリー速度を決定します.
  • ゲントリー角度間のスムーズな移行を保証するために,制限された揺れで速度プロファイルを生成します.
  • 9件の臨床症例を用いて,SPArc配達シーケンスモデル (DSMSPArc) によるパフォーマンスを評価した.

主要な成果:

  • BDSSPArcは,DSMSPArcと比較して,平均ダイナミック配信時間を308. 5 ± 10. 0秒から273.1 ± 18. 5秒に大幅に短縮しました.
  • 失われた時間は48. 1 ± 10. 0秒から12. 6 ± 3.1秒に短縮され,効率が向上しました.
  • アルゴリズムはよりスムーズなゲントリー速度プロファイルを生成しました.

結論:

  • BDSSPArcは,SPArc治療の提供のための効果的な新しいアルゴリズムです.
  • 輸送効率を向上させ,ゲントリー速度プロフィールを最適化します.
  • BDSSPArcは,SPArcの計画と臨床実施の実践的な進歩を表しています.