vessel caliber change
Alteration in vessel diameter compared to baseline or expected normal dimensions, indicating pathological processes.
Full Definition
Vessel caliber change encompasses both focal and diffuse alterations in arterial or venous diameter that deviate from expected normal dimensions or baseline measurements. Focal changes include stenoses, dilatations, and irregular contours associated with atherosclerosis, dissection, or inflammatory conditions. Diffuse changes may reflect systemic processes such as vasculitis, fibromuscular dysplasia, or hemodynamic alterations. Accurate assessment requires knowledge of normal anatomical variations and patient-specific factors including age, sex, and body habitus. Serial measurements enable monitoring of disease progression or treatment response, particularly important in aneurysmal disease surveillance and post-intervention follow-up.
Usage
Usage note: Provide quantitative measurements when possible and reference to baseline or normal expected values.
In Context
- "Serial imaging demonstrated progressive vessel caliber change with 15% diameter increase over six months." — Aneurysm surveillance report
- "Post-stent vessel caliber change showed restoration of normal diameter with elimination of the stenosis." — Endovascular procedure follow-up