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Automatic real-time surveillance of eye position and gating for stereotactic radiotherapy of uveal melanoma
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10.1118/1.1824195
/content/aapm/journal/medphys/31/12/10.1118/1.1824195
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/31/12/10.1118/1.1824195

Figures

Image of FIG. 1.
FIG. 1.

Noninvasive eye tracking and patient positioning system attached to the BrainLAB Head&Neck thermoplast mask system and setup with patient.

Image of FIG. 2.
FIG. 2.

Example for video images as acquired by the eye tracker (top: the pupil contour detected has been pasted over the image in black). Bottom: manually drawn contours to check the repositioning of the patient’s head within the mask.

Image of FIG. 3.
FIG. 3.

Summary diagram of absolute eye rotations with respect to the reference position for all five treatment fractions of one patient (approximately monitoring time).

Image of FIG. 4.
FIG. 4.

Deviation diagrams as recorded during application of one treatment field. Black: horizontal; gray: vertical deviation. The 5° maximum angular deviation criterion is indicated on the ordinate. Top: patient with good fixation capability. Examples for automatic radiation interruption: sudden eye movement (middle), slow drift away from reference position (bottom).

Tables

Generic image for table
TABLE I.

Example for statistical eye rotation data as recorded during a MR and a CT scan (total monitoring time ). Total deviation time during the whole MR scan (more than 5° from reference eye position) was and during the CT scan in this case.

Generic image for table
TABLE II.

Example for statistical eye rotation data as recorded during one fraction of a treatment (10 static conformal beams). Total deviation time during the whole beam-on time of (more than 5° from reference eye position) was in this case. No automatic radiation interruptions have occurred during this fraction. Delivery of the complete treatment fraction including the initial patient positining took about .

Generic image for table
TABLE III.

Example for statistical eye rotation data as recorded during all five fractions of the first 11 patients’ treatments. Total deviation time during the whole beam-on time (more than 5° from reference eye position) is given.

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/content/aapm/journal/medphys/31/12/10.1118/1.1824195
2004-11-24
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Automatic real-time surveillance of eye position and gating for stereotactic radiotherapy of uveal melanoma
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/31/12/10.1118/1.1824195
10.1118/1.1824195
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