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• W4281569862 abstract "Abstract Purpose Since 4D‐MRI is inadequate to capture dynamic respiratory variations, real‐time cinematographic (cine) MRI is actively used in MR‐guided radiotherapy (MRgRT) for tumor motion evaluation, delineation, and tracking. However, most radiotherapy imaging platforms do not support the format of cine MRI from clinical MRI systems. This study developed an institutional solution of clinical cine MRI for tumor motion evaluation in radiotherapy applications. Methods Cine MRI manipulation software (called Cine Viewer) was developed within a commercial Treatment Planning System (TPS). It consists of (1) single/orthogonal viewers, (2) display controllers, (3) measurement grids/markers, and (4) manual contouring tools. Results The institutional solution of clinical cine MRI incorporated with radiotherapy application was assessed through case presentations (liver cancer). Cine Viewer loaded cine MRIs from 1.5T Philips Ingenia MRI, handling MRI DICOM format. The measurement grids and markers were used to quantify the displacement of anatomical structures in addition to the tumor. The contouring tool was utilized to localize the tumor and surrogates on the designated frame. The stacks of the contours were exhibited to present the ranges of tumor and surrogate motions. For example, the stacks of the tumor contours from case‐1 were used to determine the ranges of tumor motions (∼8.17 mm on the x ‐direction [AP‐direction] and ∼14 mm on the y ‐direction [SI‐direction]). In addition, the patterns of the displacement of the contours over frames were analyzed and reported using in‐house software. In the case‐1 review, the tumor was displaced from +146.0 mm on the x ‐direction and +125.0 mm on the y ‐direction from the ROI of the abdominal surface. Conclusion We demonstrated the institutional solution of clinical cine MRI in radiotherapy. The proposed tools can streamline the utilization of cine MRI for tumor motion evaluation using Eclipse for treatment planning." @default.
• W4281569862 created "2022-05-27" @default.
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• W4281569862 date "2022-05-26" @default.
• W4281569862 modified "2023-09-27" @default.
• W4281569862 title "Technical note: Institutional solution of clinical cine MRI for tumor motion evaluation in radiotherapy" @default.
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• W4281569862 doi "https://doi.org/10.1002/acm2.13650" @default.
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