Assessment of coronary stent lumen visibility and patency by 64-slice spiral CT angiography.
- Author:
Ling-yan KONG
1
;
Zheng-yu JIN
;
Yi-ning WANG
;
Lan SONG
;
Zhu-hua ZHANG
;
Li-ren ZHANG
;
Shu-yang ZHANG
;
Song-bai LIN
;
Yun WANG
;
Wen-min ZHAO
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Aged; Angioplasty, Balloon, Coronary; Coronary Angiography; methods; Coronary Restenosis; diagnostic imaging; Female; Humans; Imaging, Three-Dimensional; Male; Middle Aged; Stents; Tomography, Spiral Computed; methods; Vascular Patency
- From: Acta Academiae Medicinae Sinicae 2006;28(1):32-35
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the clinical value of assessment of coronary stent patency by 64-slice spiral CT coronary angiography.
METHODSTotally 29 patients (59 stents) were investigated using a retrospective ECG-gated enhanced scan by 64-slice spiral CT at a mean interval of (28.4 +/- 21.2) months after coronary stent implantation. Axial multi-planar reconstruction (MPR) of the stents and curved-planar reconstruction (CPR) through the stents were evaluated for image quality on a 5-point scale (1 = excellent, 5 = uninterpretable) and lumen diameter. Stent lumen diameter was compared with the vessel diameter proximal of the stents to assess the in-stent lumen visibility. Conventional coronary angiography was performed in 5 patients, and 9 stents were evaluated.
RESULTSThe image quality was good to excellent on average (scores: 1.94 +/- 0.84), depending on heart rate, breath movement, and stent location. Stent lumen was visible, on average a percentage off (76.1 +/- 11.1)% of the lumen diameter. All the 9 stents were correctly detected as being patent, which was confirmed by conventional coronary angiography.
CONCLUSION64-slice spiral CT is a useful tool to assess the coronary stent patency.
