1.Establishment of a Mouse Model of Infection-Induced Atheroma Formation.
Hyun Ju CHUNG ; In Chul RYU ; Soo Boo HAN ; Jannett H SOUTHERLAND ; Catherine ME CHAMPAGNE ; Steven OFFENBACHER
The Journal of the Korean Academy of Periodontology 2003;33(1):113-126
No abstract available.
Animals
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Mice*
;
Plaque, Atherosclerotic*
5.Structural design and biomechanical numerical analysis of body-fitted stent in stenotic vessels.
Sicong LIU ; Hanbing ZHANG ; Xiao LI ; Ning LIU ; Aike QIAO
Journal of Biomedical Engineering 2021;38(5):858-868
To solve the problem of stent malapposition of intravascular stents, explore the design method of intravascular body-fitted stent structure and to establish an objective apposition evaluation method, the support and apposition performance of body-fitted stent in the stenotic vessels with different degrees of calcified plaque were simulated and analyzed. The traditional tube-mesh-like stent model was constructed by using computational aided design tool SolidWorks, and based on this model, the body-fitted stent model was designed by means of projection algorithm. Abaqus was used to simulate the crimping-expansion-recoil process of the two stents in the stenotic vessel with incompletely calcified plaque and completely calcified plaque respectively. A comprehensive method for apposition evaluation was proposed considering three aspects such as separation distance, fraction of non-contact area and residual volume. Compared with the traditional stent, the separation distances of the body-fitted stent in the incompletely calcified plaque model and the completely calcified plaque model were decreased by 21.5% and 22.0% respectively, the fractions of non-contact areas were decreased by 11.3% and 11.1% respectively, and the residual volumes were decreased by 93.1% and 92.5% respectively. The body-fitted stent improved the apposition performance and was effective in both incompletely and completely calcified plaque models. The established apposition performance evaluation method of stent considered more geometric factors, and the results were more comprehensive and objective.
Constriction, Pathologic/surgery*
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Humans
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Plaque, Atherosclerotic
;
Stents
7.Incomplete Clipping Resulting from Scissoring of the Clip Blades during Treatment of a Large Atheromatous Aneurysm.
Jin Seong KIM ; Seung Hwan LEE ; Hak Cheol KO ; Hee Sup SHIN ; Jun Seok KOH
Journal of Cerebrovascular and Endovascular Neurosurgery 2016;18(3):281-285
The cerebral aneurysm 'clip scissoring' phenomenon resulting from clip blade twisting is an unpredictable surgical complication. Additionally, incomplete clipping resulting from the presence of an atherosclerotic wall in the neck of the aneurysm can also cause unforeseen problems. Here, the authors present an unusual case of incomplete clipping of a large, atheromatous aneurysm resulting from clip scissoring, which was treated with additional endovascular coiling.
Aneurysm*
;
Intracranial Aneurysm
;
Neck
;
Plaque, Atherosclerotic
;
Surgical Instruments
;
Treatment Failure
8.Surgical Removal of a IVUS Catheter that was Fractured During PCI.
Young Hak KIM ; Hyuck KIM ; Young Joo SONG ; Won Sang CHUNG ; Jeong Ho KANG
The Korean Journal of Thoracic and Cardiovascular Surgery 2008;41(6):768-771
The use of IVUS provides information about the lumen and arterial wall, the location and extent of atherosclerotic plaque and the state of the arterial wall after PCI. The use of IVUS after insertion of an intracoronary stent has currently increased, while conflicting evidence exists concerning the long-term benefits of IVUS. We report here on a case of surgical removal of an entrapped and fractured IVUS catheter during insertion of intracoronary stents, and we include a review of the relevant literature.
Cardiac Catheterization
;
Catheters
;
Foreign Bodies
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Plaque, Atherosclerotic
;
Stents
9.Lung Embolism.
Korean Journal of Legal Medicine 1997;21(2):56-62
An embolus is a detached intravasclar solid, liquid, or gaseous mass that is carried by the blood to a site distant from its point of origin. Virtually 90% of all emboli arise in thrombi (thromboembolism). Rare forms of emboli include fragments of bone or bone marrow, atheromatous debris from ruptured atherosclerotic plaques, droplets of fat, bits of tumor, foreign bodies such as bullets, and bubbles of air of nitrogen. Lung embolism is the disease condition caused by pulmonary vasculature obstruction with various kinds of material mentioned above.
Bone Marrow
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Embolism*
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Foreign Bodies
;
Lung*
;
Nitrogen
;
Plaque, Atherosclerotic