Skip to main content
Dr. Troy Zhou
Dr. Troy Zhou March 10, 2026 • 10 min read

Sentinel Events vs Serious Reportable Events: What Joint Commission Alignment Means for Hospitals

A practical overview of sentinel events and serious reportable events, including the 2026 Joint Commission policy baseline, the updated NQF SRE framework, and what the 2027 alignment means for hospitals, radiology, MRI, nuclear medicine, and radiation therapy.

Dr. Troy Zhou
Dr. Troy Zhou August 13, 2025 • 4 min read

PET Imaging Uptake Time: Why It Matters for Quantification and Image Quality

Physics Pulse overview of PET imaging uptake time and its impact on SUV accuracy, image quality, and protocol standardization.

Dr. Troy Zhou
Dr. Troy Zhou May 12, 2025 • 5 min read

Lead Shielding Design Principles in Diagnostic Imaging and Nuclear Medicine

Lead shielding design principles for CT, fluoroscopy, interventional radiology, PET/CT, and radionuclide therapy—workload, use factor, occupancy, and barrier design.

Dr. Troy Zhou
Dr. Troy Zhou March 23, 2025 • 4 min read

Siemens PET Flow Technology: Continuous Motion PET for Better Image Quality and Workflow Efficiency

Physics Pulse Series overview of Siemens PET Flow technology, explaining continuous bed motion acquisition, image quality advantages, and workflow benefits compared to traditional step-and-shoot PET imaging.

Dr. Troy Zhou
Dr. Troy Zhou February 21, 2025 • 3 min read

The Technical Advantage of Time-of-Flight (TOF) in PET Imaging

Physics Pulse Series overview of Time-of-Flight (TOF) PET imaging, explaining how TOF improves image resolution, quantitative accuracy, and scan efficiency.

Dr. Troy Zhou
Dr. Troy Zhou February 13, 2025 • 3 min read

Understanding Common Isotopes in PET & Radiopharmaceutical Therapy

Physics Pulse Series overview of common PET and radiopharmaceutical therapy isotopes, including decay physics, clinical applications, and radiation safety considerations.