封面
市場調查報告書
商品編碼
2152666

X光篩檢市場規模、佔有率和趨勢分析報告:按最終用途、應用、地區和細分市場預測(2026-2033年)

X-ray Security Screening Market Size, Share & Trends Analysis Report By End-use (Transit, Commercial, Government), By Application (People Screening, Product Screening), By Region, And Segment Forecasts, 2026 - 2033

出版日期: | 出版商: Grand View Research | 英文 120 Pages | 商品交期: 2-10個工作天內

價格

全球 X 光篩檢市場預計到 2025 年將達到 42 億美元,到 2026 年將擴大到 45 億美元,到 2033 年將成長到 82 億美元,2026 年至 2033 年的複合年成長率為 8.9%。

北美市場處於領先地位,預計到 2025 年將佔銷售額的 33.0%。市場成長的促進因素是日益成長的安全擔憂,包括犯罪活動和潛在威脅,以及 X光檢查系統的廣泛部署,以檢測人員、行李、貨物和小包裹中包含的武器、走私貨和其他違禁物品。

X光篩檢產業正快速發展,先進技術的整合不斷提升篩檢系統的效率、準確性和易用性。這些進步正將X光篩檢系統的應用範圍拓展到傳統工業領域之外。檢測器、X光源和影像處理系統等硬體組件的進步,以及軟體的持續改進,顯著增強了威脅偵測能力和運作效率。傳統檢測基礎設施的持續現代化和升級,不斷為產業相關人員創造成長機會。例如,作為機場現代化計畫的一部分,倫敦希斯洛機場於2026年1月完成了所有航廈內史密斯偵測公司(Smith Detection)HI-SCAN 6040 CTiX 3D X光掃描儀的安裝。這使得乘客在攜帶液體和電子設備的情況下也能接受安檢,從而提高了安檢效率和威脅偵測能力。

為了加強反恐、打擊走私和其他犯罪活動的安全,除了人工檢查和金屬探測器等傳統安檢措施外,先進的X光篩檢技術正被日益廣泛地採用。然而,人們對輻射暴露的擔憂、嚴格的監管要求以及先進篩檢系統的高成本可能會抑制市場成長。此外,先進檢測設備的安裝和維護成本對於預算有限的終端用戶來說也是一項挑戰。這些因素可能會在預測期內阻礙X光安檢產業的成長。

機場和其他商業基礎設施的擴張,以及日益嚴峻的安全威脅,持續推動X光安檢產業的發展。交通樞紐和公共設施安全措施的不足不斷增加非法活動和恐怖活動的風險,從而推動了對先進安檢技術的需求。人體掃描儀、行李掃描儀和貨物安檢系統在檢測武器、爆炸物、走私貨和其他違禁品方面發揮著至關重要的作用。此外,世界各國政府和機場當局持續加強對現代化安檢基礎設施的投資。例如,2025年6月,加拿大航空運輸安全局(CATSA)在哈利法克斯斯坦菲爾德國際機場引入了CT X光技術,作為其全國安檢現代化計畫的一部分。同樣,2025年12月,CATSA在埃德蒙頓國際機場擴大了CT X光技術的部署,凸顯了全球對先進X光安檢技術日益成長的需求。

目錄

第1章:調查方法和範圍

第2章執行摘要

第3章:X光篩檢市場:影響因素、趨勢與範圍

  • 市場譜系展望
  • 產業價值鏈分析
  • 市場動態
  • 商業環境分析工具
  • 新冠疫情影響分析

第4章:X光篩檢市場:依最終用途分類的展望

  • X光篩檢市佔率:依最終用途分類,2025年及2030年
  • 運輸
  • 商業的
  • 政府

第5章:X光篩檢市場:按應用領域分類的展望

  • X光篩檢市場佔有率:依應用領域分類,2025年及2030年
  • 性格檢查
  • 產品檢驗

第6章:X光篩檢市場:區域展望

  • X光篩檢市佔率:依地區分類,2025年及2030年
  • 北美洲
    • 美國
    • 加拿大
  • 歐洲
    • 英國
    • 德國
    • 法國
    • 義大利
    • 西班牙
  • 亞太地區
    • 中國
    • 印度
    • 日本
    • 澳洲
    • 韓國
  • 拉丁美洲
    • 巴西
    • 墨西哥
    • 阿根廷
  • 中東和非洲
    • UAE
    • 沙烏地阿拉伯
    • 南非

第7章 競爭情勢

  • 公司分類(成熟公司、新興企業)
  • 2025年公司排名分析
  • 策略規劃
  • 公司簡介(概述、財務表現、產品概述、策略舉措)
    • Thales
    • Smiths Detection
    • NEC Corporation
    • Teledyne FLIR LLC
    • Burker
    • Analogic Corporation
    • OSI Systems
    • Leidos
    • Aware, Inc.
    • Kromek Group, plc
Product Code: 978-1-68038-400-0

The global X-ray security screening market was valued at USD 4.2 billion in 2025 and is projected to grow from USD 4.5 billion in 2026 to USD 8.2 billion in 2033, at a CAGR of 8.9% from 2026 to 2033. North America dominated the market, accounting for a revenue share of 33.0% in 2025. The market growth can be attributed to the rising security concerns, including criminal activities and potential threats, along with the increasing deployment of X-ray screening systems to detect weapons, contraband, and other prohibited items in people, baggage, cargo, and parcels.

The X-ray security screening industry has evolved rapidly, with the integration of advanced technologies making screening systems more efficient, accurate, and user-friendly. These developments have expanded the application base of X-ray security screening systems beyond traditional industrial settings. Advancements in hardware components, including detectors, X-ray sources, and imaging systems, along with continuous software enhancements, have significantly improved threat detection capabilities and operational efficiency. The ongoing modernization and replacement of legacy screening infrastructure continue to create growth opportunities for industry participants. For instance, in January 2026, London Heathrow Airport completed the deployment of Smiths Detection's HI-SCAN 6040 CTiX 3D X-ray scanners across all passenger terminals as part of its airport modernization program, enabling passengers to keep liquids and electronic devices in their carry-on baggage while enhancing screening efficiency and threat detection capabilities.

To strengthen security against terrorism, smuggling, and other criminal activities, advanced X-ray security screening technologies have been increasingly deployed alongside conventional security measures such as manual inspections and metal detectors. However, concerns about radiation exposure, stringent regulatory requirements, and the high costs of advanced screening systems may restrain market growth. In addition, the installation and maintenance costs of sophisticated screening equipment can create challenges for end users with limited budgets. Such factors could hinder the growth of the X-ray security screening industry during the forecast period.

The expansion of airports and other commercial infrastructure, combined with increasing security threats, remains a key driver of growth in the X-ray security screening industry. Inadequate security measures across transportation hubs and public facilities continue to increase the risk of illegal and terrorist activities, driving demand for advanced screening technologies. Body scanners, baggage scanners, and cargo inspection systems play a critical role in detecting weapons, explosives, contraband, and other prohibited items. Furthermore, governments and airport authorities continue to invest heavily in modern screening infrastructure. For instance, in June 2025, the Canadian Air Transport Security Authority (CATSA) deployed CT X-ray technology at Halifax Stanfield International Airport as part of its nationwide screening modernization program. Similarly, in December 2025, CATSA expanded CT X-ray deployment at Edmonton International Airport, underscoring the growing global demand for advanced X-ray security screening technologies.

Global X-ray Security Screening Market Report Segmentation

This report forecasts revenue growth at global, regional, and country levels and provides an analysis of the latest industry trends and opportunities in each of the sub-segments from 2021 to 2033. For the purpose of this study, Grand View Research has segmented the global X-ray security screening market report based on end-use, application, and region

  • End-use Outlook (Revenue, USD Million, 2021 - 2033)

Transit

Commercial

Government

  • Application Outlook (Revenue, USD Million, 2021 - 2033)

Product Screening

People Screening

  • Regional Outlook (Revenue, USD Million, 2021 - 2033)

North America

    • U.S.
    • Canada

Europe

    • UK
    • Germany
    • France
    • Italy
    • Spain

Asia Pacific

    • China
    • India
    • Japan
    • Australia
    • South Korea

Latin America

    • Brazil
    • Mexico
    • Argentina

Middle East & Africa (MEA)

    • UAE
    • Saudi Arabia
    • South Africa

Table of Contents

Chapter 1. Methodology and Scope

  • 1.1. Methodology Segmentation & Scope
  • 1.2. Information procurement
    • 1.2.1. Purchased database
    • 1.2.2. GVR's internal database
    • 1.2.3. Secondary sources & third-party perspectives
    • 1.2.4. Primary research
  • 1.3. Information analysis
    • 1.3.1. Data analysis models
  • 1.4. Market formulation & data visualization
  • 1.5. Data validation & publishing

Chapter 2. Executive Summary

  • 2.1. X-ray Security Screening Market - Market Snapshot, 2021 - 2033
  • 2.2. X-ray Security Screening Market - End-use Snapshot, 2021 - 2033
  • 2.3. X-ray Security Screening Market - Application Snapshot, 2021 - 2033

Chapter 3. X-Ray Security Screening Market Variables, Trends & Scope

  • 3.1. Market Lineage Outlook
  • 3.2. Industry Value Chain Analysis
  • 3.3. Market Dynamics
    • 3.3.1. Market Driver Analysis
    • 3.3.2. Market Restraint/Challenge Analysis
    • 3.3.3. Market Opportunity Analysis
  • 3.4. Business Environment Analysis Tools
    • 3.4.1. Industry Analysis - Porter's Five Forces Analysis
    • 3.4.2. PEST Analysis
  • 3.5. COVID-19 Impact Analysis

Chapter 4. X-ray Security Screening Market End-use Outlook

  • 4.1. X-ray Security Screening Market Share by End-use, 2025 & 2030 (USD Million)
  • 4.2. Transit
    • 4.2.1. Market Size Estimates and Forecasts, 2021 - 2033 (USD Million)
    • 4.2.2. Market estimates and forecast by region, 2021 - 2033 (USD Million)
  • 4.3. Commercial
    • 4.3.1. Market estimates and forecast, 2021 - 2033 (USD Million)
    • 4.3.2. Market estimates and forecast by region, 2021 - 2033 (USD Million)
  • 4.4. Government
    • 4.4.1. Market estimates and forecast, 2021 - 2033 (USD Million)
    • 4.4.2. Market estimates and forecast by region, 2021 - 2033 (USD Million)

Chapter 5. X-ray Security Screening Market Application Outlook

  • 5.1. X-ray Security Screening Market Share by Application, 2025 & 2030 (USD Million)
  • 5.2. People Screening
    • 5.2.1. Market Size Estimates and Forecasts, 2021 - 2033 (USD Million)
    • 5.2.2. Market estimates and forecast by region, 2021 - 2033 (USD Million)
  • 5.3. Product Screening
    • 5.3.1. Market estimates and forecast, 2021 - 2033 (USD Million)
    • 5.3.2. Market estimates and forecast by region, 2021 - 2033 (USD Million)

Chapter 6. X-ray Security Screening Market: Regional Outlook

  • 6.1. X-ray Security Screening Market Share by Region, 2025 & 2030 (USD Million)
  • 6.2. North America
    • 6.2.1. Market estimates and forecast, 2021 - 2033 (USD Million)
    • 6.2.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
    • 6.2.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.2.4. U.S.
      • 6.2.4.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.2.4.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.2.4.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.2.5. Canada
      • 6.2.5.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.2.5.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.2.5.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
  • 6.3. Europe
    • 6.3.1. Market estimates and forecast, 2021 - 2033 (USD Million)
    • 6.3.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
    • 6.3.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.3.4. U.K.
      • 6.3.4.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.3.4.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.3.4.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.3.5. Germany
      • 6.3.5.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.3.5.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.3.5.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.3.6. France
      • 6.3.6.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.3.6.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.3.6.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.3.7. Italy
      • 6.3.7.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.3.7.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.3.7.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.3.8. Spain
      • 6.3.8.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.3.8.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.3.8.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
  • 6.4. Asia Pacific
    • 6.4.1. Market estimates and forecast, 2021 - 2033 (USD Million)
    • 6.4.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
    • 6.4.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.4.4. China
      • 6.4.4.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.4.4.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.4.4.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.4.5. India
      • 6.4.5.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.4.5.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.4.5.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.4.6. Japan
      • 6.4.6.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.4.6.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.4.6.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.4.7. Australia
      • 6.4.7.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.4.7.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.4.7.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.4.8. South Korea
      • 6.4.8.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.4.8.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.4.8.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
  • 6.5. Latin America
    • 6.5.1. Market estimates and forecast, 2021 - 2033 (USD Million)
    • 6.5.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
    • 6.5.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.5.4. Brazil
      • 6.5.4.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.5.4.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.5.4.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.5.5. Mexico
      • 6.5.5.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.5.5.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.5.5.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.5.6. Argentina
      • 6.5.6.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.5.6.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.5.6.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
  • 6.6. Middle East & Africa
    • 6.6.1. Market estimates and forecast, 2021 - 2033 (USD Million)
    • 6.6.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
    • 6.6.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.6.4. UAE
      • 6.6.4.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.6.4.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.6.4.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.6.5. Saudi Arabia
      • 6.6.5.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.6.5.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.6.5.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)
    • 6.6.6. South Africa
      • 6.6.6.1. Market estimates and forecast, 2021 - 2033 (USD Million)
      • 6.6.6.2. Market estimates and forecast by end-use, 2021 - 2033 (USD Million)
      • 6.6.6.3. Market estimates and forecast by application, 2021 - 2033 (USD Million)

Chapter 7. Competitive Landscape

  • 7.1. Company Categorization (Mature Players, Emerging Players)
  • 7.2. Company Ranking Analysis, 2025
  • 7.3. Strategy Mapping\
  • 7.4. Company Profiles (Overview, Financial Performance, Product Overview, Strategic Initiatives)
    • 7.4.1. Thales
    • 7.4.2. Smiths Detection
    • 7.4.3. NEC Corporation
    • 7.4.4. Teledyne FLIR LLC
    • 7.4.5. Burker
    • 7.4.6. Analogic Corporation
    • 7.4.7. OSI Systems
    • 7.4.8. Leidos
    • 7.4.9. Aware, Inc.
    • 7.4.10. Kromek Group, plc

List of Tables

  • Table 1 List of Abbreviations
  • Table 2 Global X-ray screening security market, 2018 - 2030 (USD Million)
  • Table 3 Global X-ray screening security market, by region, 2018 - 2030 (USD Million)
  • Table 4 Global X-ray screening security market, by end-use, 2018 - 2030 (USD Million)
  • Table 5 Global X-ray screening security market, by application, 2018 - 2030 (USD Million)
  • Table 6 Global transit market by region, 2018 - 2030 (USD Million)
  • Table 7 Global commercial market by region, 2018 - 2030 (USD Million)
  • Table 8 Global government market by region, 2018 - 2030 (USD Million)
  • Table 9 Global people screening market by region, 2018 - 2030 (USD Million)
  • Table 10 Global product screening market by region, 2018 - 2030 (USD Million)
  • Table 11 North America X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 12 North America X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 13 U.S. X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 14 U.S. X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 15 Canada X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 16 Canada X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 17 Europe X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 18 Europe X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 19 U.K. X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 20 U.K. X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 21 Germany X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 22 Germany X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 23 France X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 24 France X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 25 Italy X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 26 Italy X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 27 Spain X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 28 Spain X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 29 Asia Pacific X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 30 Asia Pacific X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 31 China X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 32 China X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 33 India X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 34 India X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 35 Japan X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 36 Japan X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 37 Australia X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 38 Australia X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 39 South Korea X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 40 South Korea X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 41 Latin America X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 42 Latin America X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 43 Brazil X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 44 Brazil X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 45 Mexico X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 46 Mexico X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 47 Argentina X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 48 Argentina X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 49 Middle East & Africa X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 50 Middle East & Africa X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 51 UAE X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 52 UAE X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 53 Saudi Arabia X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 54 Saudi Arabia X-ray screening security market, by application 2018 - 2030 (USD Million)
  • Table 55 South Africa X-ray screening security market, by end-use 2018 - 2030 (USD Million)
  • Table 56 South Africa X-ray screening security market, by application 2018 - 2030 (USD Million)

List of Figures

  • Fig. 1 Data center power market segmentation
  • Fig. 2 Methodology
  • Fig. 3 Primary Research Pattern
  • Fig. 4 Information analysis
  • Fig. 5 Data Analysis Model
  • Fig. 6 Data Validation & Publishing
  • Fig. 7 X-ray screening security: Market Snapshot
  • Fig. 8 X-ray screening security Market Lineage Outlook
  • Fig. 9 X-ray screening security market: Value chain analysis
  • Fig. 10 Market driver analysis
  • Fig. 11 Market restraint analysis
  • Fig. 12 Market challenge analysis
  • Fig. 13 X-ray screening security market: Porter's five forces analysis
  • Fig. 14 X-ray screening security market: PEST analysis
  • Fig. 15 X-ray screening security market analysis: End-use segment analysis
  • Fig. 16 X-ray screening security market analysis: Application segment analysis