M
Mark Logsdon
Researcher at Sutter Health
Publications - 6
Citations - 603
Mark Logsdon is an academic researcher from Sutter Health. The author has contributed to research in topics: Sexual function & Radiation therapy. The author has an hindex of 5, co-authored 6 publications receiving 446 citations.
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Journal ArticleDOI
Hydrogel Spacer Prospective Multicenter Randomized Controlled Pivotal Trial: Dosimetric and Clinical Effects of Perirectal Spacer Application in Men Undergoing Prostate Image Guided Intensity Modulated Radiation Therapy
Neil Mariados,John Sylvester,Dhiren Shah,Lawrence Karsh,Richard Hudes,David C. Beyer,Steven Kurtzman,Jeffrey A. Bogart,R. Alex Hsi,Michael Kos,Rodney J. Ellis,Mark Logsdon,S.H. Zimberg,Kevin Forsythe,Hong Zhang,Edward Soffen,Patrick Francke,Constantine Mantz,Peter J. Rossi,Theodore L. DeWeese,Daniel A. Hamstra,Walter Bosch,Jeff M. Michalski +22 more
TL;DR: The spacer appears to be an effective tool, potentially enabling advanced prostate RT protocols, and decreased rates of patients experiencing declines in bowel quality of life.
Journal ArticleDOI
Continued Benefit to Rectal Separation for Prostate Radiation Therapy: Final Results of a Phase III Trial
Daniel A. Hamstra,Neil Mariados,John Sylvester,Dhiren Shah,Lawrence Karsh,Richard Hudes,David C. Beyer,Steven Kurtzman,Jeffrey A. Bogart,R. Alex Hsi,Michael Kos,Rodney J. Ellis,Mark Logsdon,S.H. Zimberg,Kevin Forsythe,Hong Zhang,Edward Soffen,Patrick Francke,Constantine Mantz,Peter J. Rossi,Theodore L. DeWeese,Stephanie Daignault-Newton,Benjamin W. Fischer-Valuck,Anupama Chundury,Walter Bosch,Jeff M. Michalski +25 more
TL;DR: The benefit of a hydrogel spacer in reducing the rectal dose, toxicity, and QOL declines after image guided intensity modulated radiation therapy for prostate cancer was maintained or increased with a longer follow-up period, providing stronger evidence for the benefit of hydrogels spacer use in prostate radiation therapy.
Journal ArticleDOI
Sexual quality of life following prostate intensity modulated radiation therapy (IMRT) with a rectal/prostate spacer: Secondary analysis of a phase 3 trial.
Daniel A. Hamstra,Neil Mariados,John Sylvester,Dhiren Shah,Eric Gross,Richard Hudes,David C. Beyer,Steven Kurtzman,Jeffrey A. Bogart,R. Alex Hsi,Michael Kos,Rodney J. Ellis,Mark Logsdon,S.H. Zimberg,Kevin Forsythe,Hong Zhang,Edward Soffen,Patrick Francke,Constantine Mantz,Peter J. Rossi,Theodore L. DeWeese,Stephanie Daignault-Newton,Benjamin W. Fischer-Valuck,Anupama Chundury,Walter R. Bosch,Jeff M. Michalski +25 more
TL;DR: The use of a hydrogel spacer decreased dose to the penile bulb, which was associated with improved erectile function compared with the control group based on patient-reported sexual QOL.
Journal ArticleDOI
Who Benefits From a Prostate Rectal Spacer? Secondary Analysis of a Phase III Trial.
Thomas J. Quinn,Stephanie Daignault-Newton,Walter R. Bosch,Neil Mariados,John Sylvester,Dhiren Shah,Eric Gross,Richard Hudes,David C. Beyer,Steven Kurtzman,Jeffrey A. Bogart,R. Alex Hsi,Michael Kos,Rodney J. Ellis,Mark Logsdon,S.H. Zimberg,Kevin Forsythe,Hong Zhang,Edward Soffen,Patrick Francke,Constantine Mantz,Theodore L. DeWeese,Jeff M. Michalski,Daniel A. Hamstra +23 more
TL;DR: There was little heterogeneity in the likelihood of spacer reducing the risk of declines in bowel QOL across clinical and dosimetric variables and across prognostic groups including: age, body mass index, previous surgery, target volume, or quality of radiation plans.
Journal ArticleDOI
Continued Benefit to Rectal Separation for Prostate RT: Final Results of a Phase III Trial
Daniel A. Hamstra,Neil Mariados,Dhiren Shah,Steven Kurtzman,John Sylvester,S.H. Zimberg,Richard Hudes,L. Karsh,Mark Logsdon,David C. Beyer,Michael Kos,R.A. Hsi,Kevin Forsythe,E.M. Soffen,Patrick Francke,Hengshan Zhang,Theodore L. DeWeese,Rodney J. Ellis,Constantine Mantz,Walter Bosch,J.M. Michalski +20 more
TL;DR: This work aims to provide a history of radiation oncology andrology in the United States and Europe over the past 50 years and some of the techniques used today have not been used in this manner.