Magnetic Resonance Imaging (MRI) for the Delineation of Organs At Risk (OAR) and Target Volumes in Lung Cancer Patients (MR-Lung)
The Christie NHS Foundation Trust is one of seven sites worldwide within the Atlantic consortium that is developing the Elekta MR-Linac (MRL) prior to commercial release at the end of 2017. The MRL allows MR images of patients to be acquired before, during and following radiotherapy (RT). One area where The Christie is taking the lead within the consortium is the application of the MRL for lung imaging and treatment, an area where MRI has hardly been used.
MRI scans provide greater soft tissue contrast than CT scans which can aid in the accurate delineation of organs at risk (OAR) and tumour target volumes for MRL and routine treatment. In addition, MRI can provide real time imaging which can aid in the accurate motion characterisation of these volumes. The addition of functional diffusion weighted imaging (DWI) has also proven to be useful in the discrimination of malignant from benign lesions; for lymph node detection and for the differentiation of tumour from atelectasis.
Auto-contouring has the potential to speed workflows at various points in the clinical pathway. This may be inter-patient contour propagation used pre-treatment for plan creation, or may be during online or offline adaptive workflows propagating contours through imaging acquired as treatment progresses. In collaboration with industry the investigators will be testing such algorithms on these images retrospectively.
In addition, the investigators would also like to evaluate patients' experiences of CT and MRI scans and determine which scanning method is preferred. Other studies have explored patient experiences of MRI compared to CT but not in the lung cancer patient population.
調査の概要
詳細な説明
Participants on this study will have two MRI scans in addition to the CT treatment planning scan, which is standard of care and cone beam CT scans during treatment, which are also standard of care. One of the MR scans will be close to the start of treatment and the other will be approximately 2 weeks after the start of radiotherapy treatment. If the patient has had a PET scan within 4 weeks of the 1st MR scan then the PET images will also be used for target volume delineation. If the PET scan > 4 weeks old, it can be repeated as per standard practice.
The MRI protocol includes up to 60 minutes of scanning which will include anatomical, respiratory dynamic and functional diffusion weighted imaging (DWI). The patient will be set up according to the treatment position on the MR scanner, using flat couch. The MR scans will not be used for clinical decision making.
Clinicians will then contour organs at risk (OARs) and target volumes on both the CT (guided by PET if available) and MRI scans and contours will be compared to determine the usefulness of MRI for radiotherapy treatment planning.
The contoured data sets will be fully anonymised, and used in house and shared with Elekta to assist with the development of automatic contouring / tumour tracking software, comparing CT to cone beam CT (CBCT) tracking (standard of care) with MR to MR tracking (experimental).
To assess experiences of MRI and CT, participants will be asked to complete baseline self-report questionnaires and additional questionnaires after MRI and CT scans. A small sample of participants will also be invited to participate in a semi-structured interview to explore their experiences in greater depth.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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Manchester、イギリス、M20 4BX
- The Christie NHS Foundation Trust
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Stage I-III Non-Small Cell Lung Cancer (NSCLC) or Small Cell Lung Cancer (SCLC) (histological diagnosis not mandatory)
Tumour Characteristics:
- Size ≥ 3 cm in diameter
- Positions: range of tumour positions with at least 10 of the participants having lower lobe tumours
- Patients planned for radical radiotherapy
- Eastern Co-operative Oncology Group (ECOG) Performance Status (PS) 0-2
Exclusion Criteria:
- Any contraindications to MR identified after MR safety screening including completion of an MR Safety Screening Form
- Unable to lie supine for 60 minutes
- Pregnancy
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：基礎科学
- 割り当て：なし
- 介入モデル：単一グループの割り当て
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的：MRI scan
All participants will undergo 2 MRI scans - 1 at the time of their radiotherapy planning scan & 1 after approx. 2 weeks of radiotherapy treatment.
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All participants will undergo 2 MRI scans - 1 at the time of their radiotherapy planning scans & 1 after approx. 2 weeks of radiotherapy treatment.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
時間枠 |
|---|---|
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Measure differences between target and OAR volumes contoured on PET, CT and MRI images.
時間枠：18 months
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18 months
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二次結果の測定
結果測定 |
時間枠 |
|---|---|
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Measure differences in inter-patient OAR volumes and intra-patient target and OAR volumes using MRI and CT.
時間枠：18 months
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18 months
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Measure patient experiences of CT and MRI using questionnaires and interviews.
時間枠：18 months
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18 months
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協力者と研究者
捜査官
- 主任研究者：Corinne Faivre-Finn, PhD、University of Manchester & The Christie NHS Foundation Trust
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
その他の研究ID番号
- 17_RADIO_121
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。
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