Endocardial irrigated catheter for volumetric optoacoustic mapping of radio-frequency ablation lesion progression

Özsoy, Çağla; Floryan, Marie; Deán‐Ben, Xosé Luís; Razansky, Daniel

doi:10.1364/ol.44.005808

Cited by 12 publications

(10 citation statements)

References 29 publications

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“…Lesion formation induced by HPSD ablation has been reported, and short duration application of radiofrequency is regarded as a safe procedure from the perspective of avoiding complications such as perforation or thrombus formation at the application sites 17,18 . We believe well-trained operators or upcoming methods would be able to evaluate ablation sites [19][20][21][22][23][24] .…”

Section: Discussionmentioning

confidence: 99%

Fluoroless and contrast-free catheter ablation without a lead apron in routine clinical practice

Matsubara

Fujiu

Shimizu

et al. 2020

Sci Rep

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The technique of catheter ablation has been improved within the past few decades, especially by three-dimensional (3D) mapping system. 3D mapping system has reduced radiation exposure but ablation procedures still require fluoroscopy. Our previous study showed the safety and efficacy of catheter ablation based on intracardiac echogram combined with CARTOSOUND/CARTO3 system, however fluoroscopy use for an average of 16 min is required for this procedure. The present study was aimed to reduce radiation exposure to zero and establish a radiation free catheter ablation method with the goal of utilizing it in routine clinical practice. We conducted single center, retrospective study during 2019 April to 2020 February. Consecutive 76 patients were enrolled. In the first 18 cases, the previously reported procedure (CARTOSOUND/CARTO3 method) was used. The remaining 58 cases were transitioned to fluoroless catheter ablation. The procedure time, success rates and complication rates were analyzed. Not only AF patients but atrial flutter (AFL), paroxysmal supraventricular tachycardia (PSVT) and ventricular arrhythmia patients were included. Catheter positioning, catheter visualization and collecting the geometry of each camber of the heart were conducted by using contact force and ICE based geometry on CARTO system without either prior computed tomography (CT) or magnetic resonance image (MRI). In fluoroless group, all catheter ablations were successfully performed without lead aprons. No complications occurred in either group. There were no significant differences in procedure time in any type of procedure (Total procedure time Fluoro-group; 149 ± 51 min vs. Fluoroless-group; 162 ± 43 min, N.S.), (PSVT 170 ± 53 min vs. 162 ± 29 min, N.S.), (AFL 110 ± 70 min vs. 123 ± 43 min, N.S.), (AF 162 ± 43 min vs. 163 ± 32 min, N.S.). The total radiation time was reduced to zero in fluoroless group. Catheter ablation with ICE and 3D mapping system guide without fluoroscopy could be safely performed with a high success rate, without any prior CT/MRI 3D images. Radiation was reduced completely for patients and staff, negating the need for protective wear for operators.

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Section: Discussionmentioning

confidence: 99%

Fluoroless and contrast-free catheter ablation without a lead apron in routine clinical practice

Matsubara

Fujiu

Shimizu

et al. 2020

Sci Rep

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“…116 Microvascular alterations can be detected with OR-OAM, AR-OAM and OAT, while coagulated areas are known to feature a distinctive absorption spectrum and cause an increase in OA signal. [117][118][119][120][121] Characterization of the depth, oedema, vascularization and healing process of burns has been performed with different types of OA imaging systems. [122][123][124][125][126] The practical clinical applicability of this approach may necessitate the development of non-contact OA detection approaches to avoid direct physical contact with the burns, for example based on air-coupled detectors or optical sensing of ultrasound [127][128][129][130] as was recently demonstrated by non-contact imaging of a laser-induced burn on the rabbit ear (Figure 5B).…”

Section: Burns and Other Types Of Woundsmentioning

confidence: 99%

Optoacoustic imaging of the skin

Deán‐Ben

Razansky

2021

Experimental Dermatology

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Optoacoustic (OA, photoacoustic) imaging capitalizes on the synergistic combination of light excitation and ultrasound detection to empower biological and clinical investigations with rich optical contrast while effectively bridging the gap between micro and macroscopic imaging realms. State-of-the-art OA embodiments consistently provide images at micron-scale resolution through superficial tissue layers by means of focused illumination that can be smoothly exchanged for acoustic-resolution images at diffuse light depths of several millimetres to centimetres via ultrasound beamforming or tomographic reconstruction. Taken together, this unique multi-scale imaging capacity opens unprecedented capabilities for high-resolution in vivo interrogations of the skin at scalable depths. Moreover, diverse anatomical and functional information is retrieved via dynamic mapping of endogenous chromophores such as haemoglobin, melanin, lipids, collagen, water and others. This, along with the use of non-ionizing radiation, facilitates a clinical translation of the OA modalities. We review recent progress in OA imaging of the skin in preclinical and clinical studies exploiting the rich contrast provided by endogenous substances in tissues. The imaging capabilities of existing approaches are discussed in the context of initial translational studies on skin cancer, inflammatory skin diseases, wounds and other conditions.

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“…Multispectral photoacoustic imaging is powerful for tissue characterization, and many studies have explored the possibility of multispectral photoacoustic imaging to visualize the underlying structures and lesion gaps during RF ablation [ 121 , 145 , 146 , 147 , 148 ], showing very promising results. Figure 11 is an example of PA -based differentiation between the ablated and non-ablated regions.…”

Section: Pa Imaging and DL Techniques In Cardiologymentioning

confidence: 99%

Advanced Ultrasound and Photoacoustic Imaging in Cardiology

Awasthi

Rad

et al. 2021

Sensors

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Cardiovascular diseases (CVDs) remain the leading cause of death worldwide. An effective management and treatment of CVDs highly relies on accurate diagnosis of the disease. As the most common imaging technique for clinical diagnosis of the CVDs, US imaging has been intensively explored. Especially with the introduction of deep learning (DL) techniques, US imaging has advanced tremendously in recent years. Photoacoustic imaging (PAI) is one of the most promising new imaging methods in addition to the existing clinical imaging methods. It can characterize different tissue compositions based on optical absorption contrast and thus can assess the functionality of the tissue. This paper reviews some major technological developments in both US (combined with deep learning techniques) and PA imaging in the application of diagnosis of CVDs.

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Endocardial irrigated catheter for volumetric optoacoustic mapping of radio-frequency ablation lesion progression

Cited by 12 publications

References 29 publications

Fluoroless and contrast-free catheter ablation without a lead apron in routine clinical practice

Fluoroless and contrast-free catheter ablation without a lead apron in routine clinical practice

Optoacoustic imaging of the skin

Advanced Ultrasound and Photoacoustic Imaging in Cardiology

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