世界各国のリアルタイムなデータ・インテリジェンスで皆様をお手伝い

EMEA末梢血管内超音波(IVUS)カテーテル市場の洞察、2027年までの予測


EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Insights, Forecast to 2027

当レポートでは、EMEAの末梢血管内超音波(IVUS)カテーテル市場に焦点を当てています。 2020年のヨーロッパの末梢血管内超音波(IVUS)カテーテル市場規模は3752万米ドルで、2021-2027年の間に13.58%のCAGRで20... もっと見る

 

 

出版社 出版年月 電子版価格 言語
QYResearch
QYリサーチ
2021年11月12日 US$3,900
シングルユーザライセンス
ライセンス・価格情報
注文方法はこちら
英語

※当ページの内容はウェブ更新時の情報です。
最新版の価格やページ数などの情報についてはお問合せください。

日本語のページは自動翻訳を利用し作成しています。
実際のレポートは英文のみでご納品いたします。


 

サマリー

当レポートでは、EMEAの末梢血管内超音波(IVUS)カテーテル市場に焦点を当てています。
2020年のヨーロッパの末梢血管内超音波(IVUS)カテーテル市場規模は3752万米ドルで、2021-2027年の間に13.58%のCAGRで2027年末には9339万米ドルに達すると予想されています。
2020年、中東・アフリカの末梢血管内超音波(IVUS)カテーテル市場規模は476万米ドルでしたが、2021-2027年の間に8.10%のCAGRで、2027年末には825万米ドルに達すると予測されています。
2020年のEMEAの末梢血管内超音波(IVUS)カテーテル市場規模は42.28百万米ドルでしたが、2021-2027年の間に13.05%のCAGRで2027年末には101.64百万米ドルに達すると予測されています。
末梢血管内超音波(IVUS)カテーテルの範囲と市場規模
末梢血管内超音波(IVUS)カテーテル市場は、地域(国)別、プレイヤー別、タイプ別、アプリケーション別に分類されています。EMEAの末梢血管内超音波(IVUS)カテーテル市場に参加するプレイヤー、ステークホルダー、その他の参加者は、本レポートを強力なリソースとして活用することで、優位に立つことができるでしょう。セグメント分析では、2016年から2027年の期間におけるタイプ別、アプリケーション別の売上、収益、予測に焦点を当てています。
EMEAの主要企業
フィリップス
ボストン・サイエンティフィック

タイプ別セグメント
周波数 10 MHZ
周波数 20 MHZ
周波数30 MHZ
その他

アプリケーション別セグメント
病院
クリニック
その他

地域・国別セグメント
ヨーロッパ
ドイツ
イギリス
フランス
イタリア
ロシア

中東・アフリカ地域 国別
トルコ
サウジアラビア
UAE


ページTOPに戻る


目次


1 STUDY COVERAGE 1
1.1 Peripheral Intravascular Ultrasound (IVUS) Catheter Product Introduction 1
1.2 Market by Type 2
1.2.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size Growth Rate by Type 2
1.2.2 Frequency 10 MHZ 3
1.2.3 Frequency 20 MHZ 4
1.2.4 Frequency 30 MHZ 4
1.3 Market by Application 5
1.3.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size Growth Rate by Application 5
1.3.2 Hospital 6
1.3.3 Clinic 7
1.4 Study Objectives 8
1.5 Years Considered 9
2 EXECUTIVE SUMMARY 10
2.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size Estimates and Forecasts 10
2.1.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue 2016-2027 10
2.1.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Sales 2016-2027 11
2.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Region: 2016 VS 2021 VS 2027 12
2.3 Peripheral Intravascular Ultrasound (IVUS) Catheter Historical Market Size by Region (2016-2027) 12
2.3.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Retrospective Market Scenario in Sales by Region: 2016-2021 12
2.3.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Retrospective Market Scenario in Revenue by Region: 2016-2021 14
2.4 Peripheral Intravascular Ultrasound (IVUS) Catheter Market Estimates and Projections by Region (2022-2027) 16
2.4.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Sales Forecast by Region (2022-2027) 16
2.4.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue Forecast by Region (2022-2027) 16
2.5 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size 2016-2027 17
2.6 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size 2016-2027 18
3 COMPETITOR LANDSCAPE BY PLAYERS 19
3.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Competition by Manufacturer 19
3.1.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Manufacturer (2016-2021) 19
3.1.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Manufacturer (2016-2021) 20
3.1.3 EMEA Top Players by Peripheral Intravascular Ultrasound (IVUS) Catheter Price (2016-2021) 20
3.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Competition by Manufacturer 21
3.2.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Manufacturer (2016-2021) 21
3.2.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Manufacturer (2016-2021) 22
3.2.3 EMEA Top Players by Peripheral Intravascular Ultrasound (IVUS) Catheter Price (2016-2021) 22
3.3 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Competition by Manufacturer 23
3.3.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Manufacturer (2016-2021) 23
3.3.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Manufacturer (2016-2021) 24
3.3.3 Mid East & Africa Top Players by Peripheral Intravascular Ultrasound (IVUS) Catheter Price (2016-2021) 24
3.4 Peripheral Intravascular Ultrasound (IVUS) Catheter Manufacturers Geographical Distribution 25
3.4.1 Peripheral Intravascular Ultrasound (IVUS) Catheter Manufacturing Base Distribution and Headquarters 25
3.4.2 Manufacturers Peripheral Intravascular Ultrasound (IVUS) Catheter Product Offered 25
3.4.3 Establish Date of Manufacturers 25
3.5 Mergers & Acquisitions, Expansion Plans 26
4 EUROPE 27
4.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Type 27
4.1.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Type (2016-2027) 27
4.1.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Type (2016-2027) 28
4.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Application 29
4.2.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Application (2016-2027) 29
4.2.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Application (2016-2027) 30
4.3 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Country 31
4.3.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Country (2016-2027) 31
4.3.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Country (2016-2027) 32
4.3.3 Germany 34
4.3.4 UK 34
4.3.5 France 35
4.3.6 Italy 35
4.3.7 Russia 36
5 MID EAST & AFRICA 37
5.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Type 37
5.1.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Type (2016-2027) 37
5.1.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Type (2016-2027) 38
5.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Application 39
5.2.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Application (2016-2027) 39
5.2.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Application (2016-2027) 40
5.3 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Country 41
5.3.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Country (2016-2027) 41
5.3.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Country (2016-2027) 42
5.3.3 Turkey 44
5.3.4 Saudi Arabia 44
5.3.5 UAE 45
6 CORPORATE PROFILE 46
6.1 Philips 46
6.1.1 Philips Corporation Information 46
6.1.2 Philips Overview 46
6.1.3 Philips in EMEA: Peripheral Intravascular Ultrasound (IVUS) Catheter Sales, Price, Revenue and Gross Margin (2016-2021) 47
6.1.4 Philips Peripheral Intravascular Ultrasound (IVUS) Catheter Product Description 47
6.1.5 Philips Recent Developments 50
6.2 Boston Scientific 51
6.2.1 Boston Scientific Corporation Information 51
6.2.2 Boston Scientific Overview 51
6.2.3 Boston Scientific in EMEA: Peripheral Intravascular Ultrasound (IVUS) Catheter Sales, Price, Revenue and Gross Margin (2016-2021) 52
6.2.4 Boston Scientific Peripheral Intravascular Ultrasound (IVUS) Catheter Product Description 52
6.2.5 Boston Scientific Recent Developments 54
7 MARKET DRIVERS, OPPORTUNITIES, CHALLENGES AND RISKS FACTORS ANALYSIS 55
7.1 Peripheral Intravascular Ultrasound (IVUS) Catheter Industry Trends 55
7.2 Peripheral Intravascular Ultrasound (IVUS) Catheter Market Drivers 56
7.3 Peripheral Intravascular Ultrasound (IVUS) Catheter Market Challenges 56
7.4 Peripheral Intravascular Ultrasound (IVUS) Catheter Market Restraints 57
8 VALUE CHAIN AND SALES CHANNELS ANALYSIS 58
8.1 Supply Chain Analysis 58
8.2 Peripheral Intravascular Ultrasound (IVUS) Catheter Customers 58
8.3 Sales Channels Analysis 60
8.3.1 Sales Channels 60
8.3.2 Distributors 61
9 RESEARCH FINDINGS AND CONCLUSION 63
10 APPENDIX 64
10.1 Research Methodology 64
10.1.1 Methodology/Research Approach 64
10.1.2 Data Source 67
10.2 Author Details 70
10.3 Disclaimer 70



 

ページTOPに戻る


 

Summary

This report focuses on EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter market.
In 2020, the Europe Peripheral Intravascular Ultrasound (IVUS) Catheter market size was US$ 37.52 million and it is expected to reach US$ 93.39 million by the end of 2027, with a CAGR of 13.58% during 2021-2027.
In 2020, the Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter market size was US$ 4.76 million and it is expected to reach US$ 8.25 million by the end of 2027, with a CAGR of 8.10% during 2021-2027.
In 2020, the EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter market size was US$ 42.28 million and it is expected to reach US$ 101.64 million by the end of 2027, with a CAGR of 13.05% during 2021-2027.
Peripheral Intravascular Ultrasound (IVUS) Catheter Scope and Market Size
Peripheral Intravascular Ultrasound (IVUS) Catheter market is segmented by region (country), by players, by Type, and by Application. Players, stakeholders, and other participants in the EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter market will be able to gain the upper hand as they use the report as a powerful resource. The segmental analysis focuses on sales, revenue and forecast by Type and by Application for the period 2016-2027.
Key companies in EMEA
Philips
Boston Scientific

Segment by Type
Frequency 10 MHZ
Frequency 20 MHZ
Frequency 30 MHZ
Others

Segment by Application
Hospital
Clinic
Others

Segment by region & Country
Europe
Germany
UK
France
Italy
Russia

Mid East & Africa by Country
Turkey
Saudi Arabia
UAE



ページTOPに戻る


Table of Contents


1 STUDY COVERAGE 1
1.1 Peripheral Intravascular Ultrasound (IVUS) Catheter Product Introduction 1
1.2 Market by Type 2
1.2.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size Growth Rate by Type 2
1.2.2 Frequency 10 MHZ 3
1.2.3 Frequency 20 MHZ 4
1.2.4 Frequency 30 MHZ 4
1.3 Market by Application 5
1.3.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size Growth Rate by Application 5
1.3.2 Hospital 6
1.3.3 Clinic 7
1.4 Study Objectives 8
1.5 Years Considered 9
2 EXECUTIVE SUMMARY 10
2.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size Estimates and Forecasts 10
2.1.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue 2016-2027 10
2.1.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Sales 2016-2027 11
2.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Region: 2016 VS 2021 VS 2027 12
2.3 Peripheral Intravascular Ultrasound (IVUS) Catheter Historical Market Size by Region (2016-2027) 12
2.3.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Retrospective Market Scenario in Sales by Region: 2016-2021 12
2.3.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Retrospective Market Scenario in Revenue by Region: 2016-2021 14
2.4 Peripheral Intravascular Ultrasound (IVUS) Catheter Market Estimates and Projections by Region (2022-2027) 16
2.4.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Sales Forecast by Region (2022-2027) 16
2.4.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue Forecast by Region (2022-2027) 16
2.5 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size 2016-2027 17
2.6 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size 2016-2027 18
3 COMPETITOR LANDSCAPE BY PLAYERS 19
3.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Competition by Manufacturer 19
3.1.1 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Manufacturer (2016-2021) 19
3.1.2 EMEA Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Manufacturer (2016-2021) 20
3.1.3 EMEA Top Players by Peripheral Intravascular Ultrasound (IVUS) Catheter Price (2016-2021) 20
3.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Competition by Manufacturer 21
3.2.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Manufacturer (2016-2021) 21
3.2.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Manufacturer (2016-2021) 22
3.2.3 EMEA Top Players by Peripheral Intravascular Ultrasound (IVUS) Catheter Price (2016-2021) 22
3.3 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Competition by Manufacturer 23
3.3.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Manufacturer (2016-2021) 23
3.3.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Manufacturer (2016-2021) 24
3.3.3 Mid East & Africa Top Players by Peripheral Intravascular Ultrasound (IVUS) Catheter Price (2016-2021) 24
3.4 Peripheral Intravascular Ultrasound (IVUS) Catheter Manufacturers Geographical Distribution 25
3.4.1 Peripheral Intravascular Ultrasound (IVUS) Catheter Manufacturing Base Distribution and Headquarters 25
3.4.2 Manufacturers Peripheral Intravascular Ultrasound (IVUS) Catheter Product Offered 25
3.4.3 Establish Date of Manufacturers 25
3.5 Mergers & Acquisitions, Expansion Plans 26
4 EUROPE 27
4.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Type 27
4.1.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Type (2016-2027) 27
4.1.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Type (2016-2027) 28
4.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Application 29
4.2.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Application (2016-2027) 29
4.2.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Application (2016-2027) 30
4.3 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Country 31
4.3.1 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Country (2016-2027) 31
4.3.2 Europe Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Country (2016-2027) 32
4.3.3 Germany 34
4.3.4 UK 34
4.3.5 France 35
4.3.6 Italy 35
4.3.7 Russia 36
5 MID EAST & AFRICA 37
5.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Type 37
5.1.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Type (2016-2027) 37
5.1.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Type (2016-2027) 38
5.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Application 39
5.2.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Application (2016-2027) 39
5.2.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Application (2016-2027) 40
5.3 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Market Size by Country 41
5.3.1 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Sales by Country (2016-2027) 41
5.3.2 Mid East & Africa Peripheral Intravascular Ultrasound (IVUS) Catheter Revenue by Country (2016-2027) 42
5.3.3 Turkey 44
5.3.4 Saudi Arabia 44
5.3.5 UAE 45
6 CORPORATE PROFILE 46
6.1 Philips 46
6.1.1 Philips Corporation Information 46
6.1.2 Philips Overview 46
6.1.3 Philips in EMEA: Peripheral Intravascular Ultrasound (IVUS) Catheter Sales, Price, Revenue and Gross Margin (2016-2021) 47
6.1.4 Philips Peripheral Intravascular Ultrasound (IVUS) Catheter Product Description 47
6.1.5 Philips Recent Developments 50
6.2 Boston Scientific 51
6.2.1 Boston Scientific Corporation Information 51
6.2.2 Boston Scientific Overview 51
6.2.3 Boston Scientific in EMEA: Peripheral Intravascular Ultrasound (IVUS) Catheter Sales, Price, Revenue and Gross Margin (2016-2021) 52
6.2.4 Boston Scientific Peripheral Intravascular Ultrasound (IVUS) Catheter Product Description 52
6.2.5 Boston Scientific Recent Developments 54
7 MARKET DRIVERS, OPPORTUNITIES, CHALLENGES AND RISKS FACTORS ANALYSIS 55
7.1 Peripheral Intravascular Ultrasound (IVUS) Catheter Industry Trends 55
7.2 Peripheral Intravascular Ultrasound (IVUS) Catheter Market Drivers 56
7.3 Peripheral Intravascular Ultrasound (IVUS) Catheter Market Challenges 56
7.4 Peripheral Intravascular Ultrasound (IVUS) Catheter Market Restraints 57
8 VALUE CHAIN AND SALES CHANNELS ANALYSIS 58
8.1 Supply Chain Analysis 58
8.2 Peripheral Intravascular Ultrasound (IVUS) Catheter Customers 58
8.3 Sales Channels Analysis 60
8.3.1 Sales Channels 60
8.3.2 Distributors 61
9 RESEARCH FINDINGS AND CONCLUSION 63
10 APPENDIX 64
10.1 Research Methodology 64
10.1.1 Methodology/Research Approach 64
10.1.2 Data Source 67
10.2 Author Details 70
10.3 Disclaimer 70



 

ページTOPに戻る

ご注文は、お電話またはWEBから承ります。お見積もりの作成もお気軽にご相談ください。

webからのご注文・お問合せはこちらのフォームから承ります

本レポートと同分野(一般医療機器)の最新刊レポート

本レポートと同じKEY WORD(catheter)の最新刊レポート


よくあるご質問


QYResearch社はどのような調査会社ですか?


QYリサーチ(QYResearch)は幅広い市場を対象に調査・レポート出版を行う、中国に本社をおく調査会社です。   QYResearchでは年間数百タイトルの調査レポートを出版しています。... もっと見る


調査レポートの納品までの日数はどの程度ですか?


在庫のあるものは速納となりますが、平均的には 3-4日と見て下さい。
但し、一部の調査レポートでは、発注を受けた段階で内容更新をして納品をする場合もあります。
発注をする前のお問合せをお願いします。


注文の手続きはどのようになっていますか?


1)お客様からの御問い合わせをいただきます。
2)見積書やサンプルの提示をいたします。
3)お客様指定、もしくは弊社の発注書をメール添付にて発送してください。
4)データリソース社からレポート発行元の調査会社へ納品手配します。
5) 調査会社からお客様へ納品されます。最近は、pdfにてのメール納品が大半です。


お支払方法の方法はどのようになっていますか?


納品と同時にデータリソース社よりお客様へ請求書(必要に応じて納品書も)を発送いたします。
お客様よりデータリソース社へ(通常は円払い)の御振り込みをお願いします。
請求書は、納品日の日付で発行しますので、翌月最終営業日までの当社指定口座への振込みをお願いします。振込み手数料は御社負担にてお願いします。
お客様の御支払い条件が60日以上の場合は御相談ください。
尚、初めてのお取引先や個人の場合、前払いをお願いすることもあります。ご了承のほど、お願いします。


データリソース社はどのような会社ですか?


当社は、世界各国の主要調査会社・レポート出版社と提携し、世界各国の市場調査レポートや技術動向レポートなどを日本国内の企業・公官庁及び教育研究機関に提供しております。
世界各国の「市場・技術・法規制などの」実情を調査・収集される時には、データリソース社にご相談ください。
お客様の御要望にあったデータや情報を抽出する為のレポート紹介や調査のアドバイスも致します。



詳細検索

このレポートへのお問合せ

03-3582-2531

電話お問合せもお気軽に

 

2024/11/22 10:26

155.52 円

163.34 円

198.56 円

ページTOPに戻る