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The Best Strategy for the Black Hole Phenomenon between Intravascular Ultrasound and Optical Coherence Tomography
Cheng-Cheng Kan1,2, Wei-Che Tsai2, Cheng-Chung Cheng2
1Department of Internal Medicine, Taichung Armed Forces General Hospital, Taichung 41152, Taiwan.
Insights
The black hole phenomenon, an intraluminal restenotic lesion, is identified by intravascular ultrasound (IVUS) and optical coherence tomography (OCT). Optical coherence tomography offers superior visualization of this uncommon post-stent implantation event.
Area of Science:
- Cardiovascular Imaging
- Interventional Cardiology
- Medical Device Technology
Background:
- The black hole (BH) phenomenon is an intraluminal restenotic lesion observed after intracoronary interventions.
- While both intracoronary brachytherapy and drug-eluting stents aim to prevent restenosis, the BH phenomenon is less common after drug-eluting stent implantation.
- Distinguishing between imaging modalities, optical coherence tomography (OCT) demonstrates superior resolution for identifying the BH phenomenon compared to intravascular ultrasound (IVUS).
Purpose of the Study:
- To present a clinical case of in-stent restenosis where the black hole phenomenon was initially suspected.
- To highlight the diagnostic utility of optical coherence tomography (OCT) in confirming the black hole phenomenon.
- To contribute to the understanding of the occurrence and imaging characteristics of the black hole phenomenon after coronary interventions.
Main Methods:
- Intravascular ultrasound (IVUS) was utilized for initial assessment of in-stent restenosis.
- Optical coherence tomography (OCT) was employed for detailed imaging and confirmation of the suspected black hole phenomenon.
- Case report methodology focusing on diagnostic imaging findings.
Main Results:
- Intravascular ultrasound (IVUS) suggested the presence of a black hole (BH) phenomenon.
- Optical coherence tomography (OCT) definitively confirmed the diagnosis of the black hole (BH) phenomenon in the context of in-stent restenosis.
- The findings underscore the complementary roles of IVUS and OCT in characterizing complex intraluminal lesions.
Conclusions:
- The black hole (BH) phenomenon, though uncommon, can occur after drug-eluting stent implantation.
- Optical coherence tomography (OCT) is the preferred imaging modality for accurate identification and characterization of the BH phenomenon.
- This case emphasizes the importance of advanced intravascular imaging for diagnosing and managing in-stent restenosis.
Abstract:
The black hole (BH) phenomenon is an intraluminal restenotic lesion. It was identified by intravascular ultrasound (IVUS) and optical coherence tomography (OCT) after intracoronary brachytherapy and drug-eluting stent implantation. Despite the similarity in the mode of action of brachytherapy and drug-eluting stent implantation, the BH phenomenon appears to be uncommon after drug-eluting stent implantation. Specifically, the BH phenomenon is better identified by OCT than by IVUS. Herein, we present a case of in-stent restenosis with suspected BH phenomenon on IVUS and confirmed by OCT.
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