Introduction to Guided Ablation

Since the definition of criteria to identify myocardial dense scar, borderzone and normal myocardium, and the description of isolated late potentials, local abnormal ventricular activity and decrementing evoked potential mapping, substrate‐guided ablation has progressively become the method of choice to guide procedures.

Guided ablations with a three-dimensional  electroanatomic mapping system  (3D) report greater efficacy and safety.

BACKGROUND In patients with stage 0-A (as per Milan criteria) hepatocellular carcinoma (HCC) image-guided ablation is less invasive and requires shorter hospitalization than resection, but long-term prognosis is poorer.

Magnetic navigation system (RMN)‐guided ablation and contact force‐sensing (CFS) catheters have the potential to overcome these obstacles.

Procedural and 12-month clinical outcomes were compared with 93 consecutive controls (65% paroxysmal) who underwent AI-guided ablation using 35-40 W.

We sought to compare very long-term outcomes between linear ablation and electrogram (EGM)-guided ablation for PsAF.

Methods  A total of 179 patients with primary liver cancer who were admitted to Tianjin Second People's Hospital from January 2014 to September 2017 and underwent ultrasound-guided ablation for the first time were enrolled, and according to tumor location, the patients were divided into dangerous area group with 134 patients and non-dangerous area group with 45 patients.

Conclusion Our study demonstrates the safety and long-term effectiveness of a trans-epithelial topography-guided ablation in the treatment of post-PK highly irregular astigmatism.

Similarly, we also demonstrated a high success rate in PAF patients undergoing thermal-guided ablation when compared to cohort who underwent cryoablation using a signalguided approach [7].

Finally, to fully exploit and transfer the knowledge of multiple well-trained teacher networks to the student network, we propose a novel Graph-guided Semantically Discriminative Mapping (GSDM) module, which utilizes graph-guided ablation analysis to produce a good visual explanation to highlight the important regions across modalities and concurrently preserve the interrelations of original data.

Although surgical resection remains the mainstay for PNETs, EUS-guided ablation offers a relatively safe and effective treatment option in patients deemed unfit for, or who do not want to undergo, surgery.

Background MicroFidelity catheter technology may facilitate voltage-guided ablation by high-resolution electroanatomic mapping (HR-EAM) and precisely targeted energy application.

Here, we present a case of persistent PMT after surgical resection treated with image-guided ablation.

Methods CLOSE-guided ablation was performed in 329 consecutive patients (age 61.

He underwent topography-guided ablation, which improved his visual acuity and normalized the cornea.

Methods: This retrospective cohort study included 27 patients (16 women, 11 men; median age 64 years; Eastern Cooperative Oncology Group performance score 0-2) who underwent 39 percutaneous CT-guided ablation sessions (21 MWA, 18 cryoablation; 1-4 sessions per patient) to treat 65 sarcoma lung metastases (median 1 tumor per patient, range 1-12; median tumor diameter 11 mm, range 5-33 mm; 25% non-peripheral) from 2009 to 2021.

Introduction Multiple contact-based ablation technologies have been developed to allow real-time judgement of lesion effectiveness; local impedance (LI) guided ablation and the role of ultra-high density (UHD) mapping have not yet been evaluated for cavotricuspid isthmus dependent atrial flutter (CTI-AFL).

Percutaneous image-guided ablation for the treatment of lung metastases was essentially limited to radiofrequency ablation before the advent of microwave and cryoablation.

This study aimed to evaluate the long-term efficacy of RMN-guided ablation for ventricular tachycardia (VT) and premature ventricular contractions (PVC).

Baseline QRS, PVC burden and an OT origin were independent predictors of the need to undergo a PM-guided ablation.

Combining the use of general anaesthesia, TOE, a steerable sheath, and contact force-guided ablation may contribute to achieving minimally invasive PVI with a single transseptal puncture via an SVC approach.

A total number of 384 consecutive patients with persistent AF underwent complex ablation consisting of PV isolation (PVI), biatrial electrogram-guided ablation, and linear ablation with the desired procedural endpoint of AF termination.

As secondary endpoint, the percentage of redo procedures for MRI-guided ablation at which this treatment becomes equally costly was calculated.

L scoring system when it is used for risk assessment in the percutaneous image-guided ablation (IGA) cohort [2, 3].

To evaluate the safety and technical efficacy of a customized blunt-tip microwave ablation (MWA) electrode for CT-guided ablation of pulmonary ground-glass opacity nodules (GGOs).

Transurethral high-intensity directional ultrasound allows for MRI-guided ablation of the prostate gland with the ability to contour boundaries and spare critical structures, such as the neurovascular bundle and urinary sphincter.

Background: Computed tomography (CT)-guided ablation has been used to treat adrenal metastasis (AM).

PURPOSE To evaluate the influence of coma on manifest refractive cylinder (MRC) in eyes with coma-dominated corneal optics and suggest alternative guidelines for surgical planning of astigmatism correction in topography-guided ablation and toric intraocular lens (IOL) exchange surgery.

Unfortunately, MR-guided ablation is limited to specialized centers, and the cost is relatively high.

Although focal impulse and rotor modulation (FIRM)‐guided ablation is currently used as an adjunct to PVI, evidence supporting this strategy is conflicting.

Baseline QRS, PVC burden and an OT origin were independent predictors of PM-guided ablation.

Unfortunately, MR-guided ablation is limited to specialized centers, and the cost is relatively high.

Herein, to enhance the accuracy and sensitivity for tracking the ablation catheter tip and temperature monitoring, we proposed to develop a high frame rate (500 Hz), combined ultrasound (US), and PA-guided ablation system.

There may be hesitation in treating juxtaesophageal liver tumors with conventional ultrasound-guided ablation because the location restricts the ultrasonic window due to the poor visibility.

Magnetic resonance- (MR-) guided ablation provides more reliable visualization of the target tumors and allows multiplanar imaging of the treatment process, making it the modality of choice, in particular if lesions are small.

mVNav supported the ablation of lesions smaller than those that could be ablated with US only and doubled the application of minimally-invasive US-guided ablations.

e16261 Background: Endoscopic ultrasound-guided ablation therapy (EUS-A) is a minimally invasive technique increasingly used for the management of surgically unresectable pancreatic cancer.

Purpose To investigate the outcomes of the treatment of keratoconus/corneal ectasia utilizing topographic-guided ablation (WaveLight Contoura) followed by corneal cross-linking.

Modern excimer laser techniques using topography-guided ablations as done in many of the patients in our study can improve visual outcomes beyond techniques from times past.

BACKGROUND Endoscopic ultrasound-guided ablation (EUS-A) therapy is a minimally invasive procedure for pancreatic-cystic tumors in patients with preoperative comorbidities or in patients who are not indicated for surgical resection.

Objective We sought to determine if catheter ablation–guided by PM of low-intraprocedural-burden idiopathic outflow tract VA would be noninferior compared to non-PM-guided ablation.

In this chapter, we illustrate the current knowledge about EUS-guided ablation in pancreatic solid tumor.

Materials and Methods From April 2015 to April 2020, 279 patients suspected of having PCNs were prospectively enrolled, and seventy patients underwent EUS-guided ablation using lauromacrogol alone.

Image-guided ablation can provide effective local tumor control in selected patients with CLM.

The role of percutaneous image-guided ablation in the management of RCC will be also reviewed.

Additionally, functional imaging allowed detecting novel molecular tissue characteristics within the ischemic VT substrate such as metabolic channels, RTA, and MVM demonstrating intra-substrate heterogeneity and providing possible targets for imaging-guided ablation.

The 3D matrix-guided ablation resulted in a similar nodule ablation coverage when compared to 2D-guidance (76.

These image-guided ablation techniques have emerged as a safe, cost-effective, minimally invasive treatment alternative for patients who do not require surgery.

The study aimed to evaluate a promising minimally invasive option in the treatment of corneal scars using transepithelial topography-guided ablation.

CONCLUSIONS Measurement of stromal topography using swept-source OCT immediately after mechanical deepithelialization may be a viable method in therapeutic refractive surgery, where stromal topography-guided ablation is needed.

Recently, newer image‐guided ablation techniques including radiofrequency ablation (RFA) have been introduced.

A LI-guided ablation strategy for PVI proved to be safe and effective and resulted in a very high recurrence-free rate.

The objective of this study was to validate this method during CT‐guided ablation procedures.

Conclusions: Since acute success was reported as being achieved in only ∼2/3 of the treated subjects, it is possible that the full potential benefit of the FIRM-guided ablation was hidden in this evaluation of the full cohort.

Percutaneous image-guided ablation of small RCC (< 4 cm) is a validated therapeutic option, especially as many patients are no candidates for surgery due to comorbidities.

CT-guided RFA treatment of primary liver cancer patients is safe, effective, and superior to the conventional spiral CT-guided ablation lesion site-specific terms.

The objective of this study was to evaluate the safety and efficacy of LI‐guided ablation using standard (30 W) and high‐power (50 W) in a preclinical model.

Overall, the guided ablations required 50% fewer attempts to successfully target the marker (P =.

Iatrogenic injury to the healthy ureter during ureteroscope-guided ablation of malignant or nonmalignant disease can result in ureteral stricture.

Even though image-guided ablation is accepted in most european countries as a valid alternative to surgery in patients with unresectable hepatic tumors, currently, there is no algorithm for the use of this minimally invasive therapy in croatia.

Postablation adverse events with EUS-guided ablation with alcohol lavage were 44/207 (21.

Transvaginal ultrasound-guided ablation of follicles ≥5 mm was performed in all cows as a group, at 5 to 8 days after ovulation.

Usefulness of an individually tailored LGE-MRI-guided ablation approach is still under evaluation.

Conclusions: CT-guided ablation is a feasible and safe procedure for adrenal metastases from HCC, and it may be more beneficial for patients with adrenal oligometastases.

In addition, fusion used in combination with CEUS has a great potential for increasing procedure technique during guiding of interventional procedures US-guided ablation of non-operable malignant liver lesions with RF or MW has become a well-established treatment that can be performed either percutaneously, laparoscopically, intraoperatively, during laparotomy or in combination with liver surgery.

MATERIAL AND METHODS We conducted a retrospective cohort study, on a series of 61 patients who had undergone percutaneous US-guided ablations for 82 LM between 2010 and 2015.

2–4 Incremental operator experience probably played a less important role since the primary operator performed over 1,000 AF radiofrequency ablations and only 17 procedures were performed to develop the newmethod during the transition period between the standard fluoroscopy-guided ablation and the current fluoroless one.

CONCLUSION Dispersion-guided ablation in conjunction with CPVI is efficient, personalized, and accurate for persistent AF.

CF-guided ablation has been associated with improved outcomes in observational studies.

Future studies and longer follow-up times are warranted to understand the fullest duration of the therapeutic potential of this ajmaline and map-guided ablation therapy.

ConclusionThe sequence of ventricular activation, as determined by the pacing site in patients with CRT devices, has a major influence on the detection of late potentials during substrate-guided ablation.

Our results suggest that the proposed method is a potential assisting tool for guided ablation procedures.

We have evaluated the results of visual acuity and refraction in patients undergoing custom topography-guided ablation.

This article reviews the immune microenvironment in relation to image-guided ablation techniques and discusses current and upcoming novel strategies to take advantage of antitumor immunity.

A growing body of evidence is being published regarding the safety and efficacy of minimally invasive image-guided ablation techniques.

When performing image-guided ablation for renal cell carcinoma, a thorough understanding of its imaging diagnosis, the use of preprocedural imaging for patient selection, and common appearances of.

The radiopaque beads ensure visualisation of the embolised lesion on intra- and post-operative imaging and, in selected cases, can act as a marker for CT-guided ablation.

3%) undergoing AI-guided ablation, compared to 72 propensity-matched control patients who underwent CF-guided procedure.

Image-guided ablation is performed by percutaneously introducing ablation probes to deliver energy into a tumor to destroy it in a controlled and localized fashion.

Percutaneous image-guided ablation is now an established treatment in the control of hepatocellular carcinoma (HCC).

The results support the long-term goal of developing a closed-loop platform for image-guided ablation therapy for breast cancer.

Finally, ultrasound-guided ablation therapy was introduced with promising results as a feasible treatment for low-risk papillary thyroid microcarcinoma or cervical lymph node metastases.