scholarly journals EUS-guided fiducial marker placement for radiotherapy in rectal cancer: feasibility of two placement strategies and four fiducial types

2019 ◽  
Vol 07 (11) ◽  
pp. E1357-E1364 ◽  
Author(s):  
Lisanne S. Rigter ◽  
Eva C. Rijkmans ◽  
Akin Inderson ◽  
Roy P.J. van den Ende ◽  
Ellen M. Kerkhof ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Success Rate ◽  
Cancer Patients ◽  
Fiducial Marker ◽  
Retention Rates ◽  
Technical Failure ◽  
Technical Success ◽  
Serious Adverse Events ◽  
Technical Success Rate ◽  
Clinical Consequences

Abstract Background and study aims To facilitate image guidance during radiotherapy of rectal cancer, we investigated the feasibility of fiducial marker placement. This study aimed to evaluate technical success rate and safety of two endoscopic ultrasound (EUS)-guided placement strategies and four fiducial types for rectal cancer patients. Patients and methods This prospective multicenter study included 20 participants who were scheduled to undergo rectal cancer treatment with neoadjuvant short-course radiotherapy or chemoradiation. EUS-guided endoscopy was used for fiducial placement at the tumor site (n = 10) or in the mesorectal fat and in the tumor (n = 10). Four fiducial types were used (Visicoil 0.75 mm, Visicoil 0.50 mm, Cook, Gold Anchor). The endpoints were technical success rate and retention of fiducials, the latter of which was evaluated on cone-beam computed tomography scans during the first five radiotherapy fractions. Results A total of 64 fiducials were placed in 20 patients. For each fiducial type, at least three fiducials were successfully placed in all patients. Technical failure consisted of fiducial blockage within the needle (n = 2) and ejection of two preloaded fiducials at once (n = 4). No serious adverse events were reported. In three patients, one of the fiducials was misplaced without clinical consequences; two in the prostate and one in the intraperitoneal cavity. After a median time of 17 days after placement (range 7 – 47 days), a total of 42/64 (66 %) fiducials were still present (24/44 intratumoral vs. 18/20 mesorectal fiducials, P = 0.009). Conclusions Placement of fiducials in rectal cancer patients is feasible, however, retention rates for intratumoral fiducials were lower (55 %) than for mesorectal fiducials (90 %).

Extravascular Recanalization of Chronic Total Occlusions

2018 ◽  
Author(s):  
S. Lowell Kahn
Keyword(s):  
Lower Extremity ◽  
Success Rate ◽  
Technical Failure ◽  
Technical Success ◽  
Contrast Injection ◽  
True Lumen ◽  
Chronic Total Occlusions ◽  
Technical Success Rate ◽  
The Wire

Subintimal revascularization is a mainstay of therapy for lower extremity interventions. This stems from the realization that true lumen traversal is not always possible, subintimal revascularization has a high technical success rate, and the subintimal space may confer advantages over a heavily calcified true lumen. Most commonly in the tibial vasculature, there are times when subintimal recanalization is not possible because the wire and catheter may leave the subintimal plane and enter the periadventitial tissue. Although this is not intentional, exit from the vessel historically results in a technical failure because future passes of the wire and catheter are likely to follow suit, as evidenced by extravasation on contrast injection. This chapter describes two techniques to salvage this scenario and accept an extravascular tract for revascularization: the Outback® extravascular revascularization technique and the percutaneous gun-sight extravascular revascularization technique.

A novel method of biopsy for indeterminate pancreaticobiliary strictures: tube-assisted biopsy

Endoscopy ◽  
2020 ◽  
Vol 52 (07) ◽  
pp. 589-594
Author(s):  
Sung Woo Ko ◽  
Sang Soo Lee ◽  
Hoonsub So ◽  
Jun Seong Hwang ◽  
Tae Jun Song ◽  
...  
Keyword(s):  
Success Rate ◽  
Diagnostic Yield ◽  
Rate Sensitivity ◽  
Adverse Event Rate ◽  
Technical Success ◽  
Serious Adverse Events ◽  
Technical Success Rate ◽  
Single Operator ◽  
Novel Method ◽  
Sensitivity Specificity

Abstract Background Single-operator cholangioscopy (SOC) provides an accurate diagnosis of indeterminate pancreaticobiliary strictures. However, the procedure is expensive and can be performed using only limited accessories. Therefore, we devised a novel tube-assisted biopsy (TAB) technique and evaluated its feasibility, diagnostic yield, and safety for indeterminate pancreaticobiliary strictures. Methods The medical records of patients with indeterminate pancreaticobiliary strictures who underwent TAB between September 2018 and July 2019 were reviewed. We assessed the technical success rate, adverse event rate, sensitivity, specificity, and overall accuracy of TAB in differentiating malignant from benign lesions. Results TABs were performed in 16 patients: 12 had biliary strictures; four had pancreatic strictures. The technical success rate was 93.7 % (15/16), and the sensitivity, specificity, and overall accuracy of TAB were 87.5 %, 100 %, and 93.7 %, respectively. No serious adverse events occurred either during or after the procedure in any of the patients. Conclusions TAB has an acceptable accuracy for the diagnosis of indeterminate pancreaticobiliary strictures and may represent a useful diagnostic method in patients where SOC cannot be implemented.

scholarly journals Japanese multicenter registry evaluating the antegrade dissection reentry with cardiac computerized tomography for chronic coronary total occlusion

2021 ◽  
Author(s):  
Maoto Habara ◽  
◽  
Etsuo Tsuchikane ◽  
Kazuki Shimizu ◽  
Yoshifumi Kashima ◽  
...  
Keyword(s):  
Success Rate ◽  
Cardiac Computed Tomography ◽  
Coronary Intervention ◽  
Technical Failure ◽  
Technical Success ◽  
Conventional Angiography ◽  
Total Occlusion ◽  
Cardiac Computed Tomography Angiography ◽  
Technical Success Rate ◽  
Ct Evaluation

AbstractRecently, antegrade dissection re-entry (ADR) with re-entry device for chronic total occlusion (CTO) percutaneous coronary intervention (PCI) has evolved to become one of the pillar techniques of the hybrid algorithm. Although the success rate of the device is high, it could be improved. We sought to evaluate the current trends and issues associated with ADR in Japan and evaluate the potential of cardiac computed tomography angiography (CCTA) for ADR procedure. A total 48 patients with CTO suitable for ADR evaluated by baseline conventional angiography and CCTA were enrolled. Procedural success and technical success were evaluated as the primary and secondary observations. Furthermore, all puncture points were analyzed by CCTA. CT score at each punctured site depended on the location of plaque deposition (none; + 0, at isolated myocardial site; + 1, at epicardial site; + 2) and the presence of calcification (none; + 0, presence; + 1) was analyzed and calculated (score 0–3). Overall procedure success rate was 95.8%. Thirty-two cases were attempted with the ADR procedure and 25 cases of them were successful. The technical success rate was 78.1% and myocardial infarction or other major complications were not observed in any cases. CT score at 60 puncture sites in 32 cases were analyzed and the score at technical success points was significantly smaller compared to that at technical failure points (0.68 ± 1.09 vs 1.77 ± 1.09, p < 0.0001). CTO-PCI with Stingray device in Japan could achieve a high procedure success and technical success rate. Pre procedure cardiac CT evaluation might support ADR procedure for appropriate patient selection or puncture site selection.

scholarly journals Trans-Scapular Approach Coil Localization for Scapular-Blocked Pulmonary Nodules: A Retrospective Study

2020 ◽  
Author(s):  
Juan Wu ◽  
Min-Ge Zhang ◽  
Jin Chen ◽  
Wen-Bin Ji
Keyword(s):  
Success Rate ◽  
Thoracoscopic Surgery ◽  
Pulmonary Nodules ◽  
Adenocarcinoma In Situ ◽  
Technical Failure ◽  
Technical Success ◽  
Ct Guided ◽  
Technical Success Rate ◽  
Preoperative Ct ◽  
The Mean

Abstract Background: Preoperative computed tomography (CT)-guided coil localization (CL) is commonly employed to facilitate the video-assisted thoracoscopic surgery (VATS)-guided diagnostic wedge resection (WR) of pulmonary nodules (PNs). When a scapular-blocked PN (SBPN) will be localized, the trans-scapular CL (TSCL) should be performed. In this study, we investigated the safety, feasibility, and clinical efficacy of preoperative CT-guided TSCL for SBPNs.Materials and Methods: From January 2014 to September 2020, a total of 152 patients with PNs underwent CT-guided CL prior to VATS-guided WR. Among them, 14 patients had the SBPNs and underwent TSCL procedure. Results: A total of 14 SBPNs were localized in the 14 patients. The mean diameter of the 14 SBPNs was 7.4 ± 2.4 mm. Technical success rate of puncture of the scapula was 100%. No complications occurred near the scapula. Technical success rate of CL was 92.9%. One coil dropped off when performing the VATS procedure. The mean duration of the TSCL was 14.2 ± 2.7 min. Two patient (14.3%) developed aysmptomatic pneumothorax after TSCL. Technical success rate of VATS-guided WR was 92.9%. The patient who experienced technical failure of TSCL directly underwent lobectomy. The mean VATS procedure duration and blood loss were 90.0 ± 42.4 min and 62.9 ± 37.2 ml, respectively. The final diagnoses of the 14 SBPNs included invasive adenocarcinoma (n = 4), adenocarcinoma in situ (n = 9), and benign (n = 1).Conclusions: Preoperative CT-guided TSCL can be safely and simply used to facilitate high successful rates of VATS-guided WR of SBPNs.

scholarly journals Safety and efficacy of arteriovenous fistula angioplasties performed by nephrologists: report from a Brazilian interventional nephrology center

2021 ◽  
Author(s):  
Ricardo P. Franco ◽  
Miguel C. Riella ◽  
Domingos C. Chula ◽  
Marcia T. de Alcântara ◽  
Marcelo M. do Nascimento
Keyword(s):  
Success Rate ◽  
Low Income ◽  
Complication Rates ◽  
Technical Failure ◽  
Success Rates ◽  
Technical Success ◽  
Safety And Efficacy ◽  
Technical Success Rate ◽  
Venous Stenosis ◽  
First Choice

ABSTRACT Introduction: Arteriovenous fistulas (AVF) are the first choice vascular access for hemodialysis. However, they present a high incidence of venous stenosis leading to thrombosis. Although training in interventional nephrology may improve accessibility for treatment of venous stenosis, there is limited data on the safety and efficacy of this approach performed by trained nephrologists in low-income and developing countries. Methods: This study presents the retrospective results of AVF angioplasties performed by trained nephrologists in a Brazilian outpatient interventional nephrology center. The primary outcome was technical success rate (completion of the procedure with angioplasty of all stenoses) and secondary outcomes were complication rates and overall AVF patency. Findings: Two hundred fifty-six angioplasties were performed in 160 AVF. The technical success rate was 88.77% and the main cause of technical failure was venous occlusion (10%). The incidence of complications was 13.67%, with only one patient needing hospitalization and four accesses lost due to the presence of hematomas and/or thrombosis. Grade 1 hematomas were the most frequent complication (8.2%). The overall patency found was 88.2 and 80.9% at 180 and 360 days after the procedure, respectively. Conclusion: Our findings suggest that AVF angioplasty performed by trained nephrologists has acceptable success rates and patency, with a low incidence of major complications as well as a low need for hospitalization.

Distal or proximal venous port device insertion: Results of a prospective randomized trial

2009 ◽  
Vol 27 (15_suppl) ◽  
pp. e20605-e20605
Author(s):  
P. Marcy ◽  
E. Chamorey ◽  
J. Macchiavello ◽  
R. Largillier ◽  
F. Peyrade ◽  
...  
Keyword(s):  
Success Rate ◽  
Cancer Patients ◽  
Controlled Trial ◽  
Control Technique ◽  
Technical Success ◽  
Technical Success Rate ◽  
Venous Port ◽  
Procedure Duration ◽  
Group 2 ◽  
Port Device

e20605 Background: Open, nonblinded, prospective, randomized, controlled trial comparing two techniques of venous port device insertion: percutaneous distal (phlebography-guided arm port- study technique- 2) vs proximal surgical (cephalic vein cutdown- control technique- 1) placement -To determine whether technique 1 is superior to technique 2. Methods: 230 eligible patients beginning a course of i.v. chemotherapy via a port device catheter with an expected duration of treatment of 3 months or longer were randomized (written informed consent). Eligibility criteria included adult patients with solid tissue malignancy (neuro oncology, gynecology, lung, abdominal, head§neck) beginning a course of I.V.chemotherapy, normal hemostatic parameters, no organ failure, a life expectancy >3months, WHO status<3. Exclusion criteria included current anticoagulant therapy, previous ipsilateral venous catheter/pacewires/surgical axillary node dissection/radiodermatitis, local tumor growth/sepsis, symptomatic brain metastasis, psychosis. The silicone rubber 7F catheter was connected to a 11mm port reservoir, and implanted under local anesthesia using either technique 1 or 2 after randomization. Outcome measurements included technical feasibility/procedure duration, port complications, quality of life (EORTC) questionnaires. Results: Median study duration was 12.2 vs 11.9 months (p: 0.9), median chemotherapy cycles were 6.0 in both groups. Patients groups differed significantly in venous access side (left access in group 2) and sex ratio (p=0.028). In group 2, technical success rate was higher (99 vs 91%, p<0.02), procedure was shorter: 18.0min (10.0–90.0) vs 21min (15.0- 45.0)(p<0.008), but global complication rate was higher (p<0.05). Device complication related explantation rate was 11.9 vs 2.8% (p=0.022). Conclusions: Both techniques are safe and effective. Despite a higher technical success rate and a shorter procedure duration, arm port insertion has a lower complication-free duration. Distal (arm port) technique should be recommended in young female cancer patients (neckline cosmesis/discretion), head and neck cancer patients, obese patients (upright position) and in patients presenting with respiratory insufficiency or at high risk for pneumothorax. No significant financial relationships to disclose.

Long-Term Outcome of Endoscopic Colorectal Stenting for Malignant and Benign Disease

2009 ◽  
Vol 75 (10) ◽  
pp. 897-900 ◽  
Author(s):  
Jessica Rayhanabad ◽  
Maher A. Abbas
Keyword(s):  
Success Rate ◽  
Benign Disease ◽  
Long Term Results ◽  
Colorectal Disease ◽  
Endoscopic Stenting ◽  
Technical Failure ◽  
Technical Success ◽  
Technical Success Rate ◽  
Colorectal Stenting

Although the technical success rate of endoscopic stenting has been defined, there is a paucity of outcome data. The purpose of this study was to evaluate the long-term results of colorectal stenting for both malignant and benign disease. A retrospective review was conducted of patients who underwent stenting at a tertiary center over 4 years. One surgeon performed all stents under endoscopic and fluoroscopic guidance. A total of 49 stent procedures were performed in 36 patients (19 females, mean age 65 years). Mean follow-up was 15 months. Twenty-eight patients (78%) underwent stenting for malignant disease and eight patients (22%) for benign conditions. The most common reason for intervention was obstruction (81%). Technical success rate was 72 per cent. Carcinomatosis was associated with a higher technical failure rate. Procedural related complications occurred in two patients (6%). Long-term stent migration rate was 24 per cent and was more common in patients with benign disease and patients who received nonmetal stents or stents with diameter < 25 mm. Endoscopic reintervention was required in 33 per cent of patients with initial technical success. Long-term need for subsequent operative intervention was 14 per cent. Endoscopic stenting is a viable option for a select group of patients with colorectal disease. Patient's selection and stent choice influence outcome.

scholarly journals Safety and efficacy of fiducial marker implantation for robotic stereotactic body radiation therapy with fiducial tracking

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Nathaniel Scher ◽  
Marc Bollet ◽  
Gauthier Bouilhol ◽  
Remi Tannouri ◽  
Imane Khemiri ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Success Rate ◽  
Fiducial Marker ◽  
Complication Rates ◽  
Stereotactic Radiation Therapy ◽  
Technical Success ◽  
Stereotactic Radiation ◽  
Technical Success Rate ◽  
Marker Tracking ◽  
All Treatment

Abstract Purpose The purpose of this study was to assess the feasibility, efficacy and toxicity of fiducial marker implantation and tracking in CyberKnife® stereotactic radiation therapy (SBRT) applied to extracranial locations. Materials and method This is a retrospective, single-centre, observational study to collect the data of all patients treated by stereotactic radiation therapy with fiducial marker tracking at extracranial locations, conducted between June 2014 and November 2017. Information regarding the implantation procedure, the types of toxicity related to marker implantation and the number of markers implanted/tracked during treatment were collected. Complication rates were evaluated using the CTCAE v4 [Common Terminology Criteria for Adverse Events] scale. The technical success rate was based on the ability to optimally track the tumor throughout all treatment fractions. Results Out of 2505 patients treated by stereotactic radiation therapy, 25% received treatment with fiducial marker tracking. The total number of implantation procedures was 616 and 1543 fiducial markers were implanted. The implantation-related complication rate was 3%, with 16 Grade 1 events and 4 Grade 2 events. The number of treated patients and the number of implanted markers has gradually increased since the technique was first implemented. The median treatment time was 27 min (range 10–76). 1295 fiducials were effectively tracked throughout all treatment fractions, corresponding to a technical success rate of 84%. The difference between the number of fiducials implanted and those tracked during treatment decreased significantly as the site’s experience increased. Conclusion Fiducial marker implantation and tracking is feasible, well-tolerated, and technically effective technique in SBRT for extracranial tumors.

scholarly journals Trans-scapular approach coil localization for scapular-blocked pulmonary nodules: a retrospective study

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Juan Wu ◽  
Min-Ge Zhang ◽  
Jin Chen ◽  
Wen-Bin Ji
Keyword(s):  
Success Rate ◽  
Thoracoscopic Surgery ◽  
Pulmonary Nodules ◽  
Adenocarcinoma In Situ ◽  
Technical Failure ◽  
Technical Success ◽  
Ct Guided ◽  
Technical Success Rate ◽  
Preoperative Ct ◽  
The Mean

Abstract Background Preoperative computed tomography (CT)-guided coil localization (CL) is commonly used to facilitate video-assisted thoracoscopic surgery (VATS)-guided diagnostic wedge resection (WR) of pulmonary nodules (PNs). When a scapular-blocked PN (SBPN) is localized, the trans-scapular CL (TSCL) is commonly performed. In this study, we investigated the safety, feasibility, and clinical efficacy of preoperative CT-guided TSCL for SBPNs. Materials and methods From January 2014 to September 2020, a total of 152 patients with PNs underwent CT-guided CL prior to VATS-guided WR. Of these patients, 14 had SBPNs and underwent the TSCL procedure. Results A total of 14 SBPNs were localized in the 14 patients. The mean diameter of the 14 SBPNs was 7.4 ± 2.4 mm. The technical success rate of the scapula puncture was 100%. No complications occurred near the scapula. The technical success rate of CL was 92.9%. One coil dropped off when performing the VATS procedure. The mean duration of the TSCL was 14.2 ± 2.7 min. Two patients (14.3%) developed asymptomatic pneumothorax after TSCL. The technical success rate of VATS-guided WR was 92.9%. The patient who experienced technical failure of TSCL directly underwent lobectomy. The mean duration of the VATS was 90.0 ± 42.4 min and the mean blood loss was 62.9 ± 37.2 ml. The final diagnoses of the 14 SBPNs included invasive adenocarcinoma (n = 4), adenocarcinoma in situ (n = 9), and benign disease (n = 1). Conclusions Preoperative CT-guided TSCL is a safe and simple procedure that can facilitate high success rates of VATS-guided WR of SBPNs.

scholarly journals Evaluation of percutaneous transcatheter embolization for pulmonary arteriovenous malformations

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
ZhengZhong Wu ◽  
JunQing Lin ◽  
WeiZhu Yang ◽  
Na Jiang ◽  
Ning Huang ◽  
...  
Keyword(s):  
New York ◽  
Success Rate ◽  
Arteriovenous Malformations ◽  
Heart Association ◽  
Transcatheter Embolization ◽  
Pulmonary Arteriovenous Malformations ◽  
Technical Success ◽  
Arterial Blood Gas ◽  
Technical Success Rate ◽  
Arterial Blood

Abstract Background The purpose of this study was to assess the safety and efficacy of percutaneous transcatheter embolization (TCE) for the treatment of pulmonary arteriovenous malformations (PAVMs). Methods Forty-three consecutive patients (n = 17 males; n = 26 females) with 72 untreated PAVMs underwent coil and/or plug embolization between January 2010 and February 2018. The mean patient age was 42 ± 14 years (range 19–71 years). The median size of the feeding artery was 7.9 ± 2.9 mm (range 3.5–14.0 mm). The arterial blood gas level and cardiac function of all patients were analysed. The technical success rate, recanalization rate, and complications were evaluated. Computed tomography angiography (CTA) examinations were scheduled for 12 months after treatment and every 2–4 years thereafter. Results Twenty-five PAVMs were treated with coils alone, twenty-one were treated with plugs alone, and twenty-six were treated with both coils and plugs. The technical success rate was 100%. There were no complications during operation. However, one patient (2.3%) had pulmonary thrombosis and embolism post-operation. The patients’ pre-operative and post-operative PaO2 and SaO2 levels were significantly different (p < 0.01). A comparison of the New York Heart Association (NYHA) grade before and after embolization in all patients showed a significant decrease in the post-operative grade (p < 0.01). The 72 PAVMs were divided into three groups (coils only group [n = 25], plugs only group [n = 21], and coils/plugs combined group [n = 26]). After 12 months of follow-up, there were seven reperfusion PAVMs in the coil group, seven reperfusion PAVMs in the plug group, and 1 reperfusion PAVM in the combined group. There were significant differences between the two groups and the combined group. Conclusion Percutaneous TCE is safe and effective for the treatment of PAVMs. A combination of coils and vascular plugs may be useful for preventing recanalization after the embolization of PAVMs.

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