Matthew E. Witek
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View article: Long-term quality of life in head and neck cancer: the role of postdiagnosis smoking behavior
Long-term quality of life in head and neck cancer: the role of postdiagnosis smoking behavior Open
Purpose Head and neck squamous cell carcinoma (HNSCC) significantly impacts patients’ quality of life (QoL). This study investigated long-term QoL outcomes among 619 patients with newly diagnosed HNSCC over five years. Methods QoL was asse…
View article: Gyroscopic Stereotactic Radiosurgery: A Retrospective Analysis
Gyroscopic Stereotactic Radiosurgery: A Retrospective Analysis Open
Introduction Stereotactic radiosurgery (SRS) is a safe and effective non-invasive treatment for both primary and secondary brain tumors. Recently, a gyroscopic frameless, self-contained, and self-shielded radiosurgery system has been clini…
View article: Optimizing quality assurance CT schedules during adaptive proton therapy for enhanced patient care
Optimizing quality assurance CT schedules during adaptive proton therapy for enhanced patient care Open
Purpose This study aims to optimize the frequency of routine quality assurance CT (QACT) scans in proton beam therapy (PBT) for brain, head and neck (HN), and prostate treatments. The goal is to enhance treatment efficiency without comprom…
View article: Postdiagnosis Smoking Cessation and Survival Outcomes of Head and Neck Cancer Patients
Postdiagnosis Smoking Cessation and Survival Outcomes of Head and Neck Cancer Patients Open
Background Post‐diagnosis smoking remains prevalent among head and neck squamous cell carcinoma (HNSCC) patients. Smoking cessation may improve patient outcomes. Methods A prospective longitudinal cohort study (2008–2014) included 835 newl…
View article: The acute changes in parameters of cardiac implantable electronic devices in patients undergoing radiation therapy
The acute changes in parameters of cardiac implantable electronic devices in patients undergoing radiation therapy Open
Background The number of patients with cardiac implantable electronic devices (CIEDs) requiring effective cancer treatment, including radiotherapy (RT), is increasing year by year. A potentially harmful effect of RT on CIEDs depending on t…
View article: Pencil Beam Scanning Proton Therapy as Single Vocal Cord Irradiation for Early-Stage Glottic Cancer
Pencil Beam Scanning Proton Therapy as Single Vocal Cord Irradiation for Early-Stage Glottic Cancer Open
View article: Proton therapy re-irradiation outcomes and genomic landscape of patients with recurrent head and neck cancer
Proton therapy re-irradiation outcomes and genomic landscape of patients with recurrent head and neck cancer Open
PBS-PT is effective at achieving LC for rHNC with favorable toxicity. Distant metastases are common, and associated with TP53, NOTCH4, and ARID1B mutations. Inclusion of genomic alterations in the clinical decision process may be warranted.
View article: Cone-Beam CT Images as an Indicator of QACT During Adaptive Proton Therapy of Extremity Sarcomas
Cone-Beam CT Images as an Indicator of QACT During Adaptive Proton Therapy of Extremity Sarcomas Open
The use of BPL changes on CBCT images represented a significant reduction (85%) in total QACT burden while maintaining treatment quality and accuracy. QACT can be performed only when it is needed, but not in a periodic manner. The benefits…
View article: Streamlining treatment plan evaluations on QACTs in adaptive proton radiotherapy using standardized review criteria
Streamlining treatment plan evaluations on QACTs in adaptive proton radiotherapy using standardized review criteria Open
View article: A Longitudinal Metagenomic Comparative Analysis of Oral Microbiome Shifts in Patients Receiving Proton Radiation Versus Photon Radiation for Head and Neck Cancer
A Longitudinal Metagenomic Comparative Analysis of Oral Microbiome Shifts in Patients Receiving Proton Radiation Versus Photon Radiation for Head and Neck Cancer Open
Introduction: Due to the radiation-sparing effects on salivary gland acini, changes in the composition of the oral microbiome may be a driver for improved outcomes in patients receiving proton radiation with potentially worse outcomes in p…
View article: Is noncoplanar plan more robust to inter‐fractional variations than coplanar plan in treating bilateral HN tumors with pencil‐beam scanning proton beams?
Is noncoplanar plan more robust to inter‐fractional variations than coplanar plan in treating bilateral HN tumors with pencil‐beam scanning proton beams? Open
Purpose Noncoplanar plans (NCPs) are commonly used for proton treatment of bilateral head and neck (HN) malignancies. NCP requires additional verification setup imaging between beams to correct residual errors of robotic couch motion, whic…
View article: Post-treatment PET/CT for p16-positive oropharynx cancer treated with definitive proton therapy
Post-treatment PET/CT for p16-positive oropharynx cancer treated with definitive proton therapy Open
Objectives: Given emerging data suggesting that uncertainty in the relative biologic effectiveness at the distal end of the Bragg peak results in increased mucosal injury in patients with oropharynx cancer receiving adjuvant proton therapy…
View article: Positive Predictive Value of PET CT in HPV Associated Oropharyngeal Cancers Treated with Definitive Proton Therapy
Positive Predictive Value of PET CT in HPV Associated Oropharyngeal Cancers Treated with Definitive Proton Therapy Open
View article: Histology Specific Molecular Biomarkers: Ushering in a New Era of Precision Radiation Oncology
Histology Specific Molecular Biomarkers: Ushering in a New Era of Precision Radiation Oncology Open
View article: Interstitial Brachytherapy for Lip Cancer: Technical Aspects to Individualize Treatment Approach and Optimize Outcomes
Interstitial Brachytherapy for Lip Cancer: Technical Aspects to Individualize Treatment Approach and Optimize Outcomes Open
View article: Regionalization of Head and Neck Oncology Tumor Boards: Perspectives of Collaborating Physicians
Regionalization of Head and Neck Oncology Tumor Boards: Perspectives of Collaborating Physicians Open
Objectives To survey academic and community physician preferences regarding the virtual multidisciplinary tumor board (MTB) for further improvement and expansion. Study Design This anonymous 14‐question survey was sent to individuals that …
View article: Patterns of failure for hypopharynx cancer patients treated with limited high-dose radiotherapy treatment volumes
Patterns of failure for hypopharynx cancer patients treated with limited high-dose radiotherapy treatment volumes Open
Purpose: Optimal radiotherapy treatment volumes for patients with locally advanced hypopharynx squamous cell carcinoma should ensure maximal tumor coverage with minimal inclusion of normal surrounding structures. Here we evaluated the effe…
View article: Evaluation of intrafraction couch shifts for proton treatment delivery in head‐and‐neck cancer patients: Toward optimal imaging frequency
Evaluation of intrafraction couch shifts for proton treatment delivery in head‐and‐neck cancer patients: Toward optimal imaging frequency Open
Purpose Treatment planning for head‐and‐neck (H&N) cancer, in particular oropharynx, nasopharynx, and paranasal sinus cases, at our center requires noncoplanar proton beams due to the complexity of the anatomy and target location. Targetin…
View article: Defining <scp>high‐risk</scp> elective contralateral neck radiation volumes for oropharynx cancer
Defining <span>high‐risk</span> elective contralateral neck radiation volumes for oropharynx cancer Open
Background To define the location of the initial contralateral lymph node (LN) metastasis in patients with oropharynx cancer. Methods The location of the LN centroids from patients with oropharynx cancer and a single radiographically posit…
View article: Impact of the Novel Coronavirus 2019 (COVID‐19) Pandemic on Head and Neck Cancer Care
Impact of the Novel Coronavirus 2019 (COVID‐19) Pandemic on Head and Neck Cancer Care Open
Objective The study aimed to assess the impact of the coronavirus disease 2019 (COVID‐19) pandemic on head and neck oncologic care at a tertiary care facility. Study Design This was a cross‐sectional study conducted between March 18, 2020,…
View article: Time to Treatment Analysis of Head and Neck Cancer Patients Undergoing Proton Therapy
Time to Treatment Analysis of Head and Neck Cancer Patients Undergoing Proton Therapy Open
View article: Treatment Outcomes for Advanced Stage Hypopharyngeal Cancer Treated without a GTV to CTV Expansion
Treatment Outcomes for Advanced Stage Hypopharyngeal Cancer Treated without a GTV to CTV Expansion Open
View article: Intra-Treatment PET/MRI Separates Intermediate Risk p16-Positive Oropharynx Cancer Patients into Favorable and Unfavorable Cohorts
Intra-Treatment PET/MRI Separates Intermediate Risk p16-Positive Oropharynx Cancer Patients into Favorable and Unfavorable Cohorts Open
View article: Clinical outcomes for larynx patients with cancer treated with refinement of high‐dose radiation treatment volumes
Clinical outcomes for larynx patients with cancer treated with refinement of high‐dose radiation treatment volumes Open
Background To evaluate disease control, toxicities, and dose to dysphagia/aspiration risk structures (DARS) using a direct gross tumor volume (GTV 70Gy ) to planning target volume expansion (dPTV 70Gy ) for patients with squamous cell carc…
View article: Opioid use in patients undergoing treatment for oral cavity cancer.
Opioid use in patients undergoing treatment for oral cavity cancer. Open
Patients undergoing surgery and adjuvant radiotherapy for oral cavity cancer who required opioids for cancer treatment related pain are at minimal risk for new dependency. Judicious pain management should be applied for patients with a his…
View article: Reducing radiotherapy target volume expansion for patients with HPV-associated oropharyngeal cancer
Reducing radiotherapy target volume expansion for patients with HPV-associated oropharyngeal cancer Open
View article: (P31) Patterns of Failure Following Curative Treatment for Oral Cavity Squamous Cell Carcinoma, in Patients Receiving Post-Operative Radiotherapy +/- Chemotherapy, an Institutional Experience
(P31) Patterns of Failure Following Curative Treatment for Oral Cavity Squamous Cell Carcinoma, in Patients Receiving Post-Operative Radiotherapy +/- Chemotherapy, an Institutional Experience Open
View article: NCCN Guidelines Insights: Head and Neck Cancers, Version 1.2018
NCCN Guidelines Insights: Head and Neck Cancers, Version 1.2018 Open
The NCCN Guidelines for Head and Neck (H&N) Cancers provide treatment recommendations for cancers of the lip, oral cavity, pharynx, larynx, ethmoid and maxillary sinuses, and salivary glands. Recommendations are also provided for occult pr…
View article: Impact of HPV Status on the Prognostic Potential of the AJCC Staging System for Larynx Cancer
Impact of HPV Status on the Prognostic Potential of the AJCC Staging System for Larynx Cancer Open
Objective We evaluated the ability of the American Joint Committee on Cancer (AJCC) seventh edition staging system to prognosticate the overall survival of patients with human papillomavirus (HPV)–positive laryngeal squamous cell carcinoma…
View article: Methadone Use During Concurrent Chemoradiation in Patients With Head and Neck Cancer
Methadone Use During Concurrent Chemoradiation in Patients With Head and Neck Cancer Open