intravascular ultrasound ivus imaging  (Volcano Corporation)

Journal: JACC Case Reports

Article Title: Surgical Retrieval of Protective Guidewire That Spontaneously Fractured in the RCA and Penetrated the Vessel

doi: 10.1016/j.jaccas.2025.105740

Figure Lengend Snippet: Guidewire in the RCA Spontaneously Fracturing and Penetrating the Vessel (A) The BMW Universal II guidewire spontaneously fractured (arrows) at the first bending of the RCA when it was planned to be withdrawn, while the distal end of the guidewire was still located in the coronary artery. (B and C) The fractured end of the guidewire quickly pierced the vessel and entered the pericardium with the beating of the heart. The arrows in (B) indicate the position where the fractured guidewire penetrated the vessel, and the arrows in (C) indicate the position where the broken end of the fractured guidewire reached, which is located at the lower edge of the aortic arch. (D) IVUS demonstrating the guidewire piercing the vessel at the first bend of the RCA, with local hematoma (arrows). (E and F) Schematic diagrams showing the process of guidewire fracture. The guidewire is represented by the blue line. (E) The arrow points to the position where the guidewire fracture occurred. (F) The guidewire penetrated the artery at the first curve of the RCA. The distal end of the guidewire was in the RCA, and the broken end was located at the lower edge of the aortic arch, which was confirmed by subsequent CT examination. The length of the fractured guidewire was 14 cm, which was confirmed after removal during emergency surgery. BMW = balance middleweight; CT = computed tomography; IVUS = intravascular ultrasound; RCA = right coronary artery.

Article Snippet: Imaging • Intravascular ultrasound (Boston Scientific).

Techniques: Computed Tomography

Journal: JACC Case Reports

Article Title: Coronary Rupture Right After Intravascular Lithotripsy for Severely Calcified Coronary Lesion With C-CAT Sign

doi: 10.1016/j.jaccas.2025.103750

Figure Lengend Snippet: Intravascular Ultrasound Findings The white arrow indicates the significant stenosis at the diagonal branch bifurcation via coronary angiography. The white triangle indicates the calcified plaque and the C-type calcified and residual thin plaque sign (C-CAT sign) observed by intravascular ultrasound. In addition, the reference vessel diameter was sufficient for 3.0 mm.

Article Snippet: After the 1.5-mm semicompliant balloon dilatation, an intravascular ultrasound (IVUS) (Opticross HD Plus 60MHz Coronary Imaging Catheter; Boston Scientific) was performed ( , ). shows the severe calcification at the distal bifurcation of the diagonal branch along with C-type calcified and residual thin plaque sign (C-CAT sign).

Techniques: