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John S, Yan Y, Abbasi S, Mehrmohammadi M. Ultrasound and Photoacoustic Imaging for the Guidance of Laser Ablation Procedures. SENSORS (BASEL, SWITZERLAND) 2024; 24:3542. [PMID: 38894332 PMCID: PMC11175072 DOI: 10.3390/s24113542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024]
Abstract
The accuracy and efficacy of laser ablation procedures depend on the accurate placement of the laser applicator within the diseased tissue, monitoring the real-time temperature during the ablation procedure, and mapping the extent of the ablated region. Ultrasound (US) imaging has been widely used to guide ablation procedures. While US imaging offers significant advantages for guiding ablation procedures, its limitations include low imaging contrast, angular dependency, and limited ability to monitor the temperature. Photoacoustic (PA) imaging is a relatively new imaging modality that inherits the advantages of US imaging and offers enhanced capabilities for laser-guided ablations, such as accurate, angle-independent tracking of ablation catheters, the potential for quantitative thermometry, and monitoring thermal lesion formation. This work provides an overview of ultrasound-guided procedures and how different US-related artifacts limit their utility, followed by introducing PA as complementary to US as a solution to address the existing limitations and improve ablation outcomes. Furthermore, we highlight the integration of PA-driven features into existing US-guided laser ablation systems, along with their limitations and future outlooks. Integrated US/PA-guided laser ablation procedures can lead to safer and more precise treatment outcomes.
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Affiliation(s)
| | | | | | - Mohammad Mehrmohammadi
- Imaging Science, University of Rochester Medical Center, Rochester, NY 14642, USA; (S.J.); (Y.Y.); (S.A.)
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2
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Chen S, Zhang Y, Ma B, Chen J, Hao J, Zhang F, Cui C, Chen M. Practical Electrochemical Method to Enhance Needle Visibility during Ultrasound Imaging. ACS Biomater Sci Eng 2023; 9:5824-5831. [PMID: 37651609 DOI: 10.1021/acsbiomaterials.3c00807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Ultrasound-guided needle interventions play a pivotal role in the diagnosis and treatment processes in clinical practice. However, existing echogenic needles face challenges in achieving a balance between effectiveness, ease of manufacturing, and inexpensiveness. In this study, we developed an echogenic needle that encompassed the aforementioned advantages through the use of the electrolysis technology. The overall contour of the needle after electrolysis was observed using bright-field microscopy, while scanning electron microscopy (SEM) was employed to examine the micro-variations on the needle's surface. Subsequently, we validated the enhanced visualization effects in vitro (pork) and in vivo (anesthetized rabbit's thigh) puncture phantoms. To ensure the safety of the needles after the puncture procedure, we conducted Vickers hardness tests, SEM detection, bright-field microscopy, and DAPI staining. The results demonstrated that the surface roughness of the needle increased with the duration of electrolysis. Taking into account the comprehensive safety tests, the needle, subjected to 40 s of electrolysis, demonstrated a safe and effective enhancement of ultrasound visualization.
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Affiliation(s)
- Shaojie Chen
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yanjuan Zhang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Biao Ma
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Jiuzhou Chen
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Jingzhe Hao
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Feng Zhang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Chang Cui
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Minglong Chen
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Hovgesen CH, Wilhjelm JE, Vilmann P, Kalaitzakis E. Echogenic Surface Enhancements for Improving Needle Visualization in Ultrasound: A PRISMA Systematic Review. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2022; 41:311-325. [PMID: 33870532 DOI: 10.1002/jum.15713] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 03/14/2021] [Accepted: 03/17/2021] [Indexed: 05/12/2023]
Abstract
Optimal visualization of needles in clinical ultrasound imaging is important and challenging, especially at steep angles. Improvement of visualization has been attempted with various techniques, for example, coatings and dimples. This systematic review summarizes enhancement techniques and identifies superior echogenic surface enhancements. Twenty-four papers were identified providing visibility measures for 33 different echogenic needles. These were grouped according to surface characteristics and ranked. Echogenic needles ranked higher than standard needles especially at steeper angles. Among the echogenic needles, coated needles were seemingly better visualized "in vivo" than noncoated needles, despite heterogeneity in study conditions. No unambiguous comparison revealed which needle was best visualized.
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Affiliation(s)
- Caroline Harder Hovgesen
- Biomedical Engineering, Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Jens E Wilhjelm
- Biomedical Engineering, Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Peter Vilmann
- Gastrounit, Herlev University Hospital, Herlev, Denmark
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Watanabe K, Tokumine J, Lefor AK, Nakazawa H, Yamamoto K, Karasawa H, Nagase M, Yorozu T. Photoacoustic needle improves needle tip visibility during deep peripheral nerve block. Sci Rep 2021; 11:8432. [PMID: 33875687 PMCID: PMC8055898 DOI: 10.1038/s41598-021-87777-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 04/05/2021] [Indexed: 02/08/2023] Open
Abstract
We developed a novel technology using the photoacoustic effect that improve needle tip visibility. We evaluated whether this technology improves needle tip visibility when performing a deep peripheral nerve block in a cadaver model. A photoacoustic needle was developed using a conventional echogenic needle with an intraluminal optical fiber. A pulsed laser sends light from a source through the fiber, which is converted to ultrasound at the needle tip using the photoacoustic effect. A nerve block expert performed deep nerve blocks using the photoacoustic needle and the ultrasound views recorded, with or without photoacoustic ultrasound at the needle tip. Needle tip visibility was evaluated by questionnaire (Likert scale 1: very poor, 5: very good) completed by anesthesiologists evaluating recorded images. The score was presented as median [first quartile, third quartile]. Statistical analysis was performed using the Wilcoxon matched-pairs signed rank test. The scores of needle tip visibility with photoacoustic ultrasound from the needle tip (4.3 [4.0, 4.5]) was significantly higher than that without photoacoustic ultrasound (3.5 [3.2, 3.8]) (p < 0.01). Ultrasound emitted at the needle tip using the photoacoustic effect improves needle tip visibility during deep peripheral nerve blocks. Clinical trial number University Hospital Medical Information Network Center Clinical Trials Registration System (UMIN000036974).
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Affiliation(s)
- Kunitaro Watanabe
- Department of Anesthesiology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka City, Tokyo, 181-8611, Japan
| | - Joho Tokumine
- Department of Anesthesiology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka City, Tokyo, 181-8611, Japan.
| | - Alan Kawarai Lefor
- Department of Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Harumasa Nakazawa
- Department of Anesthesiology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka City, Tokyo, 181-8611, Japan
| | - Katsuya Yamamoto
- Medical System Research & Development Center, FUJIFILM Corporation, Kanagawa, Japan
| | - Hiroyuki Karasawa
- Medical System Research & Development Center, FUJIFILM Corporation, Kanagawa, Japan
| | - Miki Nagase
- Department of Anatomy, Kyorin University Faculty of Medicine, Mitaka, Tokyo, Japan
| | - Tomoko Yorozu
- Department of Anesthesiology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka City, Tokyo, 181-8611, Japan
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5
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Norbury JW, Nazarian LN. Ultrasound‐guided treatment of peripheral entrapment mononeuropathies. Muscle Nerve 2019; 60:222-231. [DOI: 10.1002/mus.26517] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2019] [Indexed: 01/13/2023]
Affiliation(s)
- John W. Norbury
- Department of Physical Medicine and RehabilitationThe Brody School of Medicine at East Carolina University 600 Moye Boulevard, Greenville North Carolina 27834 USA
| | - Levon N. Nazarian
- Department of RadiologySidney Kimmel Medical College at Thomas Jefferson University Philadelphia Pennsylvania USA
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6
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van de Berg NJ, Sánchez-Margallo JA, van Dijke AP, Langø T, van den Dobbelsteen JJ. A Methodical Quantification of Needle Visibility and Echogenicity in Ultrasound Images. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:998-1009. [PMID: 30655111 DOI: 10.1016/j.ultrasmedbio.2018.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 08/31/2018] [Accepted: 10/04/2018] [Indexed: 06/09/2023]
Abstract
During ultrasound-guided percutaneous interventions, needle localization can be a challenge. To increase needle visibility, enhancements of both the imaging methods and the needle surface properties have been investigated. However, a methodical approach to compare potential solutions is currently unavailable. The work described here involves automated image acquisition, analysis and reporting techniques to collect large amounts of data efficiently, delineate relevant factors and communicate effects. Data processing included filtering, line fitting and image intensity analysis steps. Foreground and background image samples were used to compute a contrast-to-noise ratio or a signal ratio. The approach was evaluated in a comparative study of commercially available and custom-made needles. Varied parameters included needle material, diameter and surface roughness. The shafts with kerfed patterns and the trocar and chiba tips performed best. The approach enabled an intuitive polar depiction of needle visibility in ultrasound images for a large range of insertion angles.
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Affiliation(s)
- Nick J van de Berg
- Department of BioMechanical Engineering Delft University of Technology, Delft, The Netherlands.
| | - Juan A Sánchez-Margallo
- Medical Technology, SINTEF, Norway; Computer Systems and Telematics, University of Extremadura, Extremadura, Spain
| | - Arjan P van Dijke
- Department of BioMechanical Engineering Delft University of Technology, Delft, The Netherlands
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Uppal V, Sancheti SF, Kwofie MK, Szerb JJ. Novel approaches to the brachial plexus in the infraclavicular space: filling up the tool box. Reg Anesth Pain Med 2019; 44:rapm-2018-100238. [PMID: 30635520 DOI: 10.1136/rapm-2018-100238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 11/25/2018] [Indexed: 11/03/2022]
Affiliation(s)
- Vishal Uppal
- Department of Anesthesia, Perioperative Medicine and Pain Management, Dalhousie University, Nova Scotia Health Authority and IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Sushil F Sancheti
- Department of Anesthesia, Perioperative Medicine and Pain Management, Dalhousie University, Nova Scotia Health Authority and IWK Health Centre, Halifax, Nova Scotia, Canada
| | - M Kwesi Kwofie
- Department of Anesthesia, Perioperative Medicine and Pain Management, Dalhousie University, Nova Scotia Health Authority and IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Jennifer J Szerb
- Department of Anesthesia, Perioperative Medicine and Pain Management, Dalhousie University, Nova Scotia Health Authority and IWK Health Centre, Halifax, Nova Scotia, Canada
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Norbury JW, Karr NC, Sindhi V, Rathbun KM, Charles SC, McIver MB, Morrison EJ. Improving the Performance Time and Accuracy of Ultrasound-Guided Interventions: A Randomized Controlled Double-Blind Trial of the Line-of-Sight Approach and the "APPLES" Mnemonic. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2018; 37:2909-2914. [PMID: 29665109 DOI: 10.1002/jum.14653] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/21/2018] [Accepted: 03/09/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To determine whether the line-of-sight approach improved the performance time and accuracy of ultrasound (US)-guided needle placement targeting the subdeltoid bursa in a cadaver among novice operators compared to the side approach. A secondary objective was to determine whether participants thought the APPLES (angle, position, perpendicular, line up, entry, sweep) mnemonic was a helpful guide for performing the procedure. METHODS Medical students and residents were randomized into either a line-of-sight or side approach group and then crossed over to the other group. The procedure time was determined by 2 blinded reviewers. A survey was administered to determine which method participants preferred and whether they thought the APPLES mnemonic was helpful. A paired t test was used to compare the performance time, and the McNemar test was used to compare the accuracy of the methods. RESULTS Among the 110 participants, the performance time with the line-of-sight approach (mean, 14.4 seconds; SD, 9.95 seconds) was significantly decreased compared to the side approach (mean, 18.6 seconds; SD, 10.1 seconds; P = .00029). Additionally, participants who only hit the target using one method were more likely to hit the target in 30 seconds using the line-of-sight approach (P = .035). In total, 72.7% of participants preferred the line-of-sight approach over the side approach, and 88.2% of participants thought that APPLES mnemonic was useful. CONCLUSIONS This study highlights the finding that positioning of the operator is important in performing US-guided interventions, and the line-of-sight approach may improve the performance time and accuracy among novice operators. Furthermore, the APPLES mnemonic serves as a useful educational tool for teaching US-guided interventional procedures.
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Affiliation(s)
- John W Norbury
- Department of Physical Medicine and Rehabilitation, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA
| | - Natalie C Karr
- Department of Physical Medicine and Rehabilitation, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA
| | - Vivek Sindhi
- Department of Physical Medicine and Rehabilitation, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA
| | - Kimberly M Rathbun
- Department of Emergency Medicine, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA
| | - Stephen C Charles
- Department of Academic Affairs, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA
| | - Michael B McIver
- Department of Physical Medicine and Rehabilitation, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA
| | - Eric J Morrison
- Department of Physical Medicine and Rehabilitation, University of Rochester, Rochester, New York, USA
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9
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Ferreira TH, Teixeira LB, Schroeder CA, de Miguel Garcia C, Schroeder KM. Description of an ultrasound-guided thoracic paravertebral block technique and the spread of dye in dog cadavers. Vet Anaesth Analg 2018; 45:811-819. [DOI: 10.1016/j.vaa.2018.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 07/20/2018] [Accepted: 07/23/2018] [Indexed: 12/26/2022]
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10
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Single-Injection Versus Multiple-Injection Technique of Ultrasound-Guided Paravertebral Blocks: A Randomized Controlled Study Comparing Dermatomal Spread. Reg Anesth Pain Med 2018; 42:575-581. [PMID: 28665874 DOI: 10.1097/aap.0000000000000631] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND AND OBJECTIVES The objective of this study was to investigate the extent of dermatomal spread following an ultrasound-guided thoracic paravertebral block (PVB) when equal volumes of local anesthetic are injected at 1 versus 5 vertebral levels. METHODS Seventy patients undergoing a unilateral mastectomy were randomized to receive either single or multiple injections of a PVB under real-time ultrasound guidance using a parasagittal approach. The patients in the single-injection group received a PVB at T3-T4 level with 25 mL of 0.5% ropivacaine and 4 subcutaneous sham injections. Patients in the multiple-injection group received 5 injections of a PVB from T1 to T5 level. Five milliliters of 0.5% ropivacaine was injected at each level. Evaluation of the sensory block was carried out 20 minutes following the completion of the PVB. RESULTS The median (interquartile range) dermatomal spread was not significantly different for the single-injection group (5 [4-6]) compared with the multiple-injection group (5 [5-6]), with a median difference of 0 segments (95% confidence interval, -1 to 0 segments; P = 0.22). The median time to performance of the single-injection PVB was shorter compared with the multiple-injection group (10 minutes), with a mean difference of -4 minutes (95% confidence interval, -6 to -3 minutes; P < 0.001). CONCLUSIONS An ultrasound-guided single-injection PVB provides equivalent dermatomal spread and duration of analgesia compared with a multiple-injection PVB. The single-injection technique takes less time to perform and hence may be preferred over a multiple-injection technique.The trial was registered prospectively at ClinicalTrials.gov (NCT02852421) on July 15, 2016.
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Uppal V, Kalagara HK, Sondekoppam RV. Tips and tricks to improve the safety of the retroclavicular brachial plexus block. Am J Emerg Med 2018; 36:1107-1108. [DOI: 10.1016/j.ajem.2017.09.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 09/28/2017] [Indexed: 11/16/2022] Open
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Prabhakar C, Uppal V, Sondekoppam RV. Effect of Beam Steering on Echogenic and Nonechogenic Needle Visibility at 40°, 50°, and 60° Needle Insertion Angles. Anesth Analg 2018; 126:1926-1929. [PMID: 29116966 DOI: 10.1213/ane.0000000000002618] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Currently, there is little understanding of the role of echogenic needles and beam steering at moderate angles of needle insertion. The ultrasound images of the echogenic and nonechogenic needles inserted into pork at 40°, 50°, and 60° were scored by anesthesiologists on a scale of 0-10. The effect of different levels of beam steer was also explored. At 40°, steep beam steering improves visualization of both nonechogenic and echogenic needles to an equal, satisfactory level. At 50° and 60°, visualization of nonechogenic needles is poor, whereas visibility of an echogenic needle was adequate and may be improved with steep beam steering.
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Affiliation(s)
- Christopher Prabhakar
- From the Department of Anesthesiology, Pharmacology and Therapeutics, St Paul's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Vishal Uppal
- Department of Anesthesia, Perioperative Medicine and Pain Management, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Rakesh V Sondekoppam
- Department of Anesthesiology & Pain Medicine, University of Alberta, Edmonton, Alberta, Canada
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Gascon-Garcia J, Bagur-Calafat C, Girabent-Farrés M, Balius R. Validation of the range of dry needling with the fascial winding technique in the carpal tunnel using ultrasound. J Bodyw Mov Ther 2018; 22:348-353. [DOI: 10.1016/j.jbmt.2017.10.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/20/2017] [Accepted: 10/24/2017] [Indexed: 11/28/2022]
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Scholten HJ, Pourtaherian A, Mihajlovic N, Korsten HHM, A. Bouwman R. Improving needle tip identification during ultrasound-guided procedures in anaesthetic practice. Anaesthesia 2017; 72:889-904. [DOI: 10.1111/anae.13921] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2017] [Indexed: 12/16/2022]
Affiliation(s)
- H. J. Scholten
- Department of Anaesthesiology; Intensive Care and Pain Medicine; Catharina Hospital; Eindhoven the Netherlands
| | - A. Pourtaherian
- Department of Electrical Engineering; Eindhoven University of Technology; Eindhoven the Netherlands
| | | | - H. H. M. Korsten
- Department of Anaesthesiology; Intensive Care and Pain Medicine; Catharina Hospital; Eindhoven the Netherlands
- Department of Electrical Engineering; Eindhoven University of Technology; Eindhoven the Netherlands
| | - R. A. Bouwman
- Department of Anaesthesiology; Intensive Care and Pain Medicine; Catharina Hospital; Eindhoven the Netherlands
- Department of Electrical Engineering; Eindhoven University of Technology; Eindhoven the Netherlands
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Park JW, Cheon MW, Lee MH. Phantom Study of a New Laser-Etched Needle for Improving Visibility During Ultrasonography-Guided Lumbar Medial Branch Access With Novices. Ann Rehabil Med 2016; 40:575-82. [PMID: 27606263 PMCID: PMC5012968 DOI: 10.5535/arm.2016.40.4.575] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 09/30/2015] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To compare the visibility and procedural parameters between a standard spinal needle and a new laser-etched needle (LEN) in real-time ultrasonography guided lumbar medial branch access in a phantom of the lumbosacral spine. METHODS We conducted a prospective single-blinded observational study at a rehabilitation medicine center. A new model of LEN was manufactured with a standard 22-gauge spinal needle and a laser etching machine. Thirty-two inexperienced polyclinic medical students performed ultrasonography-guided lumbar medial branch access using both a standard spinal needle and a LEN with scanning protocol. The outcomes included needle visibility score, needle elapsed time, first-pass success rate, and number of needle sticks. RESULTS The LEN received significantly better visibility scores and shorter needle elapsed time compared to the standard spinal needle. First-pass success rate and the number of needle sticks were not significantly different between needles. CONCLUSION A new LEN is expected to offer better visibility and enable inexperienced users to perform an ultrasonography-guided lumbar medial branch block more quickly. However, further study of variables may be necessary for clinical application.
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Affiliation(s)
| | - Min Woo Cheon
- Department of Hospital Biomedical Engineering, Dongshin University, Gwangju, Korea
| | - Min Hong Lee
- Department of Rehabilitation Medicine, Chosun University Hospital, Gwangju, Korea
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17
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Effect of body mass index on angle of needle insertion during ultrasound-guided lateral sagittal infraclavicular brachial plexus block. J Clin Anesth 2015; 27:375-9. [DOI: 10.1016/j.jclinane.2015.03.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 02/25/2015] [Accepted: 03/30/2015] [Indexed: 10/23/2022]
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18
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Ueshima H, Kitamura A. A needle with sand-blasted steel at the tip of the bevel is valid for ultrasound-guided deep nerve block. J Clin Anesth 2015; 27:363. [PMID: 25805632 DOI: 10.1016/j.jclinane.2015.03.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 03/05/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Hironobu Ueshima
- Department of Anesthesiology, Saitama Medical University International Medical Center, Saitama, Japan.
| | - Akira Kitamura
- Department of Anesthesiology, Saitama Medical University International Medical Center, Saitama, Japan
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