Publications by authors named "W D ARMSTRONG"
Article Synopsis
- The study compares the definitions of high-volume disease (HVD) and low-volume disease (LVD) in metastatic hormone-sensitive prostate cancer (mHSPC) patients using both conventional imaging (CI) and prostate-specific membrane antigen (PSMA) PET imaging, highlighting the need for more accurate definitions for treatment decisions.
- Researchers analyzed data from 67 mHSPC patients across five international sites who had both PSMA PET and CI scans within a specific timeframe, assessing how many were classified as HVD or LVD based on each imaging method.
- Results showed a significant discrepancy in classification: 25.4% of patients were identified as HVD using CI, while 40.3% were identified as HVD using
Importance: The phase 3 randomized EMBARK trial evaluated enzalutamide with or without leuprolide in high-risk nonmetastatic hormone-sensitive prostate cancer. Eligibility relied on conventional imaging, which underdetects metastatic disease compared with prostate-specific membrane antigen-positron emission tomography (PSMA-PET).
Objective: To describe the staging information obtained by PSMA-PET/computed tomography (PSMA-PET/CT) in a patient cohort eligible for the EMBARK trial.
Purpose: To determine how smoking intensity impacts the prognosis of patients with human papillomavirus (HPV)-positive oropharyngeal cancer treated by chemoradiation.
Methods And Materials: The medical records of 32 patients with histologically proven squamous cell carcinoma of the oropharynx and a prior smoking history were retrospectively reviewed. All patients were treated with intensity-modulated radiotherapy to a median dose of 70 Gy (range 63 to 72 Gy) with concurrent cisplatin.
Article Synopsis
- Measuring deeply virtual Compton scattering (DVCS) on the neutron is essential for understanding the nucleon's structure through generalized parton distributions (GPDs).
- Neutron targets help complement data obtained from polarized protons, particularly in determining the poorly understood GPD E, which is crucial for analyzing quark contributions to nucleon spin.
- The experiment utilized a longitudinally polarized electron beam at Jefferson Lab and the CLAS12 detector to measure DVCS on the neutron for the first time, providing new insights into quark-flavor separation of relevant Compton form factors.
Background: Previous studies have implicated hippocampal abnormalities in the neuropathology of psychosis spectrum disorders. Reduced hippocampal volume has been reported across all illness stages, and this atrophy has been hypothesized to be the result of glutamatergic excess. To test this hypothesis, we measured hippocampal subfield volumes and hippocampal glutamate levels in antipsychotic naïve first episode psychosis patients (FEP) and the progression of volume decline and changes in glutamate levels over a 16-week antipsychotic drug (APD) trial.
View Article and Find Full Text PDF