Tag Archives: stress

Cardiac MRI
4
Feb

Overview

Cardiac MRI offers detailed assessment of cardiac structure function and tissue characterization. It provides quantitative measures of ventricular volumes and ejection fraction. It is valuable for cardiomyopathy and myocarditis evaluation.

Tissue Characterization

Late gadolinium enhancement identifies scar and fibrosis. T1 and T2 mapping provide quantitative tissue metrics. These techniques aid in diagnosis and prognosis.

Functional Assessment

Cine MRI evaluates wall motion and valve function. Flow quantification measures shunts and regurgitation. Stress MRI assesses ischemia in selected patients.

Practical Considerations

Cardiac MRI requires specialized protocols and expertise. Scan time and patient cooperation affect study success. Coordination with cardiology optimizes clinical utility.

Stress Views Hand Wrist
4
Feb

Overview

Stress radiographs apply controlled force to evaluate ligamentous integrity and joint stability in the wrist and hand. They are performed under fluoroscopic guidance or with manual stress during radiography. Stress views help determine need for surgical stabilization.

Technique

Apply varus valgus or axial stress while obtaining targeted projections of the wrist or hand. Use protective measures and informed consent due to discomfort risk. Document the applied stress and technique used for reproducibility.

Clinical Indications

Stress views are indicated for suspected scapholunate instability ulnar collateral ligament injury and carpal instability. They assess dynamic widening or subluxation not evident on static views. MRI may be used to directly visualize ligament tears when needed.

Image Assessment

Measure joint space widening and compare with the contralateral side. Evaluate for dynamic subluxation and associated fractures. Report findings to guide orthopedic decision making and potential surgical repair.

Ankle Mortise Stress
4
Feb

Overview

Ankle stress radiographs apply controlled force to evaluate syndesmotic and lateral ligament stability. They are performed under fluoroscopic guidance or with manual stress during radiography. Stress views help determine need for surgical stabilization.

Technique

Apply inversion eversion or external rotation stress while obtaining AP mortise or specialized stress projections. Use protective measures and informed consent due to discomfort risk. Document the applied stress and technique used.

Clinical Indications

Stress views are indicated for suspected ligamentous injury when standard views are inconclusive. They assess widening of the mortise and talar tilt. MRI may be used to directly visualize ligament tears when needed.

Image Assessment

Measure joint space widening and talar tilt compared with the contralateral side. Evaluate for associated fractures and instability patterns. Report findings to guide orthopedic decision making.