Скачать или смотреть Rutherford's 032: Intravascular Ultrasound

#IntravascularUltrasound #IVUS #VascularSurgery #EndovascularTherapy #MedicalImaging #Radiology #MinimallyInvasive #Aneurysm #Dissection #PAD #VenousDisease #Stenting #RutherfordsVascular

This video provides a comprehensive look at *Intravascular Ultrasound (IVUS)**, a key imaging tool in modern vascular surgery and endovascular therapy, drawing from Rutherford's Vascular Surgery 10th Edition. **IVUS is like a miniature ultrasound on a catheter**, allowing clinicians to **see inside blood vessels* in real-time during procedures, offering a level of detail traditional external imaging often misses.

The technology works by sending *sound waves 360 degrees* from a catheter tip inside the vessel, processing the returning echoes to build cross-sectional images. Different catheter frequencies are chosen based on vessel size and required detail. IVUS images are interpreted based on *greyscale (echogenicity)* to identify vessel wall layers and *plaque types* like calcium, fibrotic, or soft lipid-rich lesions.

Advanced features include *3D reconstruction* for longitudinal views, *ColorFlow* to visualise blood-wall interface, and *Virtual Histology (VHIVUS)* which analyses echo frequency to **colour-code plaque composition**, proven accurate against tissue samples and valuable for identifying vulnerable plaques.

IVUS offers significant advantages: *more accurate diagnostic information**, **precise measurements for sizing balloons/stents/grafts**, **real-time procedural guidance**, and significantly **reduced need for contrast dye and radiation exposure* compared to angiography.

Its applications are vast across arterial interventions (PAD, CTOs, carotid), complex aortic repair (AAAs, TAAAs, dissections, trauma, coarctation) and venous disease (stenosis, DVT, IVC filters, compression syndromes like May-Thurner), often *changing treatment plans* based on its detailed view. While invasive and costly, studies suggest its benefits in improving outcomes and *preventing future complications* often justify the investment. The future promises even more advanced, integrated systems.