Imaging Biomarkers for Immunotherapy Response
21
Feb

Background

Immunotherapy can produce atypical response patterns such as pseudoprogression which complicates assessment by size alone. Imaging biomarkers including radiomics PET metrics and functional MRI parameters may provide earlier indicators of response or resistance. Robust validation is required before clinical adoption.

Candidate Biomarkers

PET based metrics of metabolic activity and radiomic texture features from CT or MRI have shown promise in early studies. Dynamic contrast MRI and diffusion metrics may reflect changes in tumor microenvironment and immune infiltration. Combining imaging biomarkers with blood based markers may improve predictive performance.

Clinical Trials and Validation

Prospective trials with standardized imaging protocols are needed to validate biomarkers and define thresholds for clinical decisions. Harmonization across scanners and reconstruction methods is essential for reproducibility. Regulatory qualification pathways should be pursued for biomarkers intended as trial endpoints.

Clinical Integration

Imaging biomarkers can inform early treatment modification and trial stratification when validated and standardized. Implement biomarker reporting with clear interpretation and recommended actions for clinicians. Multidisciplinary tumor boards should incorporate biomarker data into decision making.

Imaging for Climate Related Health Effects
20
Feb

Context

Climate change alters disease patterns and increases exposures that manifest in imaging findings such as heat related organ injury vector borne infection complications and air pollution related cardiopulmonary disease. Imaging contributes to surveillance diagnosis and research on climate related health impacts. Health systems must adapt imaging capacity and protocols to emerging needs.

Clinical Examples

CT and MRI detect complications of severe heat stroke including rhabdomyolysis related organ injury and neurologic sequelae. Imaging identifies pulmonary and cardiac effects of wildfire smoke exposure and helps evaluate vector borne disease complications such as neuroinvasive infections. Imaging supports outbreak investigations by localizing disease burden and complications.

Public Health Integration

Aggregate imaging data with environmental exposure and epidemiologic data to map disease patterns and inform public health responses. Use imaging registries to study long term sequelae of climate related exposures and to guide resource allocation. Collaborate with public health agencies to incorporate imaging into surveillance frameworks.

Preparedness and Resilience

Plan for surge imaging demand during climate related disasters and ensure mobile imaging and teleradiology capacity for affected regions. Train clinicians to recognize imaging patterns associated with emerging exposures and maintain flexible protocols for mass casualty and outbreak scenarios. Incorporate climate resilience into equipment procurement and facility design.

Internal Medicine
20
Feb

Overview

Internal medicine physicians provide comprehensive care for adults including diagnosis, treatment and prevention of complex multisystem disease. They coordinate care across specialties and manage chronic conditions such as diabetes, hypertension and heart failure. Many internists subspecialize in areas like cardiology, gastroenterology or infectious disease.

Clinical Practice

Internists perform detailed history and physical examination, order and interpret diagnostic tests and manage inpatient and outpatient care plans. They emphasize continuity of care, preventive medicine and care coordination for multimorbidity. Hospitalists are internists who focus on inpatient management and transitions of care.

Procedures and Tools

Common tools include point of care ultrasound, bedside procedures such as paracentesis and central line placement, and use of EHR based decision support. Internists rely on laboratory and imaging data to guide complex medical decisions. Chronic disease management programs and multidisciplinary clinics support long term outcomes.

Training and Roles

Internal medicine training includes residency with opportunities for fellowship subspecialization; board certification and maintenance of competence are required. Internists often lead primary care teams, quality improvement initiatives and population health programs. They collaborate closely with specialists, nurses, pharmacists and allied health professionals.

New York
20
Feb

Regulatory board

New York State Department of Health Bureau of Environmental Radiation Protection enforces ionizing radiation rules registers x ray equipment and licenses radiologic personnel.

Cities and venue

Largest city is New York City and major venues include Madison Square Garden and MetLife Stadium in the metro area.

Sports

Professional teams include NFL Giants and Jets and NBA Knicks and Nets and MLB Yankees and Mets and major academic programs include Columbia University and NYU Langone.

Notes

State capital is Albany and New York City is a global center for advanced imaging and research.

Sterile Drapes and Gowns
20
Feb

Overview

Sterile drapes and gowns protect sterile fields and reduce infection risk during procedures.

Material and sizing

Select appropriate drape sizes and gown levels for the procedure and staff roles.

Storage and handling

Keep sterile packs in clean dry storage and inspect packaging integrity before use.

Aseptic technique

Combine drapes and gowns with sterile technique checklists to maintain procedural sterility.

Gauze and Dressings
19
Feb

Overview

Gauze and dressings are used for hemostasis wound coverage and catheter site protection.

Types and selection

Stock sterile gauze pads adhesive dressings and occlusive options for varied clinical needs.

Application and change

Apply dressings with aseptic technique and change according to protocol or when soiled.

Disposal and inventory

Dispose contaminated dressings as clinical waste and monitor inventory to prevent stockouts.

Arsenic
19
Feb

Overview

Arsenic is a brittle metalloid with a history of both industrial use and notoriety for toxicity in inorganic forms.

Properties

It forms multiple allotropes and oxidation states commonly +3 and +5 and produces toxic inorganic arsenic species.

Occurrence and Uses

Arsenic occurs in mineral ores and is used in some semiconductors, wood preservatives and historically in pesticides and alloys.

Isotopes and Safety

Stable isotope As 75 is natural; inorganic arsenic compounds are highly toxic and carcinogenic, requiring strict environmental and occupational controls.

Fluorine 18 FDG F18 FDG
19
Feb

Overview

F18 fluorodeoxyglucose is a glucose analog labeled with fluorine 18 used widely for PET imaging of metabolic activity.

Properties

FDG accumulates in tissues with high glucose metabolism; positron emission allows high resolution PET imaging and quantitative SUV analysis.

Uses

Used for oncologic staging and response assessment, infection and inflammation imaging, and selected neurologic and cardiac applications.

Safety

Radiation dose is moderate; ensure appropriate fasting and glucose control prior to injection and follow pregnancy and breastfeeding precautions.

SPECT CT Hybrid Imaging
19
Feb

Introduction

SPECT CT combines functional SPECT imaging with anatomical CT to improve lesion localization and diagnostic specificity. Hybrid imaging enhances interpretation in oncology cardiology and infection imaging. Attenuation correction and anatomical correlation increase clinical confidence.

Clinical Applications

SPECT CT improves localization of sentinel nodes bone lesions and infection foci and refines cardiac perfusion assessment. It reduces equivocal findings and guides targeted interventions. Protocol optimization balances CT dose and diagnostic needs.

Technical Considerations

Accurate registration and attenuation correction require consistent patient positioning and timing between SPECT and CT acquisitions. Low dose CT protocols are often sufficient for localization while diagnostic CT may be used when additional anatomic detail is needed. Quality control ensures reliable hybrid performance.

Implementation

Hybrid SPECT CT systems require coordinated workflows radiopharmacy support and trained technologists for acquisition and reconstruction. Structured reporting integrates functional and anatomic findings for clinical teams. Ongoing training and protocol review maintain diagnostic quality.

Quality Assurance and Calibration in Radiation Safety
18
Feb

Program Structure

Establish QA schedules acceptance testing and preventive maintenance plans for imaging and therapy equipment and assign responsibilities for execution and documentation. Use standardized phantoms and test procedures and maintain traceable calibration records. Integrate QA findings into corrective action workflows and equipment replacement planning.

Calibration and Performance Testing

Perform routine calibration of dose meters detectors and imaging systems using accredited laboratories and reference standards. Validate image quality metrics and dosimetric accuracy after repairs upgrades or software changes. Document all tests and maintain logs for regulatory inspections and accreditation.

Audit and Continuous Improvement

Conduct internal and external audits of QA programs and use findings to prioritize improvements and training. Benchmark performance against peer institutions and diagnostic reference levels and implement projects to address gaps. Engage multidisciplinary teams to review QA data and translate insights into practice changes.

Record Keeping and Compliance

Maintain comprehensive QA records including test results maintenance actions and staff training to demonstrate compliance with regulations and accreditation standards. Use electronic systems to manage documentation and facilitate retrieval for audits. Regularly review policies to reflect technological advances and regulatory updates.