Show simple item record

dc.contributor.authorBodla, Mashhood Ahmad
dc.contributor.authorLukez, Alexander
dc.contributor.authorO'Loughlin, Lauren
dc.contributor.authorBaima, Jennifer
dc.contributor.authorMoni, Janaki
dc.date2022-08-11T08:10:08.000
dc.date.accessioned2022-08-23T16:56:41Z
dc.date.available2022-08-23T16:56:41Z
dc.date.issued2018-02-15
dc.date.submitted2018-01-18
dc.identifier.doi10.13028/k9xc-xd50
dc.identifier.urihttp://hdl.handle.net/20.500.14038/42983
dc.description<p>Poster presentation at the 2018 Association of Academic Physiatrists Annual Meeting, Atlanta, GA, February 15, 2018.</p> <p>Co-authors Alexander Lukez and Lauren O'Loughlin are medical students at UMass Medical School.</p>
dc.description.abstractObjectives: We aimed to determine the variability in position of the pelvis for patients while receiving daily radiation treatments for pelvic malignancies. Design: Therapeutic radiation targets lymph nodes that lie along the curvature of the sacrum. Any change in pelvic tilt could inadvertently move these targets in or out of the radiation field. This variability has clinical significance both to target cancerous lymph nodes and avoid healthy sacrum. To better understand this variability, we observed trends in the change in the sacral slope. This measurement was chosen because it is an objective radiographic finding, there is no significant difference between men and women, and joint replacement does not appear to change this measurement. Twenty subjects were identified from patients receiving whole pelvis radiation for at least four weeks. CT simulator images and lateral radiographs obtained as part of standard radiation care were reviewed. We manually calculated this measurement with sloping lines drawn with computer graphics on the same single lateral view daily for the course of radiation per subject. Results: Compared to the initial imaging, the average sacral slope variation across all 20 subjects was 2.27 degrees, with a standard deviation of 1.43, and average variation among patients ranged from 1.22-5.09 degrees. Variation in sacral slope across all 20 subjects from one treatment day to the next was 2.05 degrees, with a standard deviation of 1.47, and ranged from 0.97-3.21 degrees. Conclusions: Despite the best efforts of the provider, there may be some variability in the daily pelvic position of the patient between fractions. This is clinically important because presacral lymph nodes are part of the radiation target volume and sacral fractures are a potential adverse effect of radiation treatment. Exercises for pelvic relaxation could be explored to potentially reduce this variability.
dc.language.isoen_US
dc.rightsCopyright 2018 the Authors
dc.subjectpelvic cancer
dc.subjectradiation therapy
dc.subjectpelvis
dc.subjectpelvic malignancies
dc.subjectNeoplasms
dc.subjectOncology
dc.subjectOrthopedics
dc.subjectRadiology
dc.subjectRehabilitation and Therapy
dc.titlePositioning of Patients for Pelvic Radiation: Variability Across Treatment
dc.typePoster
dc.identifier.legacyfulltexthttps://escholarship.umassmed.edu/cgi/viewcontent.cgi?article=1190&amp;context=ortho_pp&amp;unstamped=1
dc.identifier.legacycoverpagehttps://escholarship.umassmed.edu/ortho_pp/186
dc.legacy.embargo2018-02-15T00:00:00-08:00
dc.identifier.contextkey11383879
refterms.dateFOA2022-08-27T06:06:18Z
html.description.abstract<p><strong>Objectives:</strong> We aimed to determine the variability in position of the pelvis for patients while receiving daily radiation treatments for pelvic malignancies.</p> <p><strong>Design:</strong> Therapeutic radiation targets lymph nodes that lie along the curvature of the sacrum. Any change in pelvic tilt could inadvertently move these targets in or out of the radiation field. This variability has clinical significance both to target cancerous lymph nodes and avoid healthy sacrum.</p> <p>To better understand this variability, we observed trends in the change in the sacral slope. This measurement was chosen because it is an objective radiographic finding, there is no significant difference between men and women, and joint replacement does not appear to change this measurement.</p> <p>Twenty subjects were identified from patients receiving whole pelvis radiation for at least four weeks. CT simulator images and lateral radiographs obtained as part of standard radiation care were reviewed.</p> <p>We manually calculated this measurement with sloping lines drawn with computer graphics on the same single lateral view daily for the course of radiation per subject.</p> <p><strong> <strong>Results:</strong></strong> Compared to the initial imaging, the average sacral slope variation across all 20 subjects was 2.27 degrees, with a standard deviation of 1.43, and average variation among patients ranged from 1.22-5.09 degrees. Variation in sacral slope across all 20 subjects from one treatment day to the next was 2.05 degrees, with a standard deviation of 1.47, and ranged from 0.97-3.21 degrees.</p> <p><strong> <strong>Conclusions:</strong></strong> Despite the best efforts of the provider, there may be some variability in the daily pelvic position of the patient between fractions. This is clinically important because presacral lymph nodes are part of the radiation target volume and sacral fractures are a potential adverse effect of radiation treatment. Exercises for pelvic relaxation could be explored to potentially reduce this variability.</p>
dc.identifier.submissionpathortho_pp/186
dc.contributor.departmentSchool of Medicine
dc.contributor.departmentDepartment of Orthopedics and Physical Rehabilitation
dc.contributor.departmentDepartment of Radiation Oncology


Files in this item

Thumbnail
Name:
Positioning_pelvic_phase_1_SP_ ...
Size:
257.9Kb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record