Screening Programs

Overview

Screening programs aim to detect disease early in asymptomatic populations. Modalities include mammography low dose CT and ultrasound in selected settings. Program design balances benefits harms and resources.

Breast Screening

Mammography remains the standard for breast cancer screening in many populations. Risk based approaches tailor screening intervals and modalities. Supplemental imaging may be used for high risk individuals.

Lung Screening

Low dose CT screening reduces lung cancer mortality in high risk smokers. Program implementation includes eligibility criteria and follow up protocols. Smoking cessation remains a key component of screening programs.

Quality and Outcomes

Screening programs require quality assurance and outcome monitoring. False positives and overdiagnosis are important considerations. Public education and access influence program success.

Screening Ultrasound

Overview

Screening ultrasound is used in selected populations for specific conditions. Examples include breast and abdominal aortic aneurysm screening. Program design considers sensitivity specificity and resource implications.

Breast Screening

Supplemental ultrasound may be used for women with dense breasts. It can detect cancers not seen on mammography in some cases. Operator skill and false positive rates influence program value.

Aortic Aneurysm

Ultrasound screening for abdominal aortic aneurysm reduces mortality in high risk men. It is a one time or periodic test depending on findings. Follow up protocols guide surveillance and intervention.

Implementation

Training and quality assurance are essential for screening ultrasound programs. Clear referral and follow up pathways ensure appropriate care. Cost effectiveness and access determine program feasibility.