scholarly journals Origami Lesion-Targeting Device for CT-Guided Interventions

2019 ◽  
Vol 5 (2) ◽  
pp. 23
Author(s):  
Austin Taylor ◽  
Sheng Xu ◽  
Bradford Wood ◽  
Zion Tse
Keyword(s):  
3D Printing ◽  
Minimally Invasive ◽  
Laser Cutting ◽  
Low Cost ◽  
Needle Insertion ◽  
Ct Guided ◽  
Surgical Tools ◽  
Image Guided ◽  
Radiocontrast Agent ◽  
Guided Therapy

The objective of this study is to preliminarily evaluate a lesion-targeting device for CT-guided interventions. The device is created by laser cutting the structure from a sheet of medical grade paperboard, 3D printing two radiocontrast agent grids onto the surface and folding the structure into a rectangular prism with a viewing window. An abdominal imaging phantom was used to evaluate the device through CT imaging and the targeting of lesions for needle insertion. The lesion-targeting trials resulted in a mean targeting error of 2.53 mm (SD 0.59 mm, n = 30). The device is rigid enough to adequately support standard biopsy needles, and it attaches to the patient, reducing the risk of tissue laceration by needles held rigidly in place by an external manipulator. Additional advantages include adequate support for the insertion of multiple surgical tools at once for procedures such as composite ablation and the potential to guide off-axial needle insertion. The low-cost and disposability of the device make it well-suited for the minimally invasive image-guided therapy environment.

scholarly journals Origami Needle Guide for CT-Guided Interventions

2018 ◽  
Author(s):  
Austin Taylor ◽  
Sheng Xu ◽  
Bradford J. Wood ◽  
Zion Tsz Ho Tse
Keyword(s):  
Standard Deviation ◽  
3D Printing ◽  
Laser Cutting ◽  
Low Cost ◽  
Needle Insertion ◽  
Ct Guided ◽  
Image Guided ◽  
Radiocontrast Agent ◽  
Horizontal Orientation ◽  
Guided Therapy

The objective of this study is to preliminarily evaluate a new CT-biopsy guidance device, an origami needle guide. The device is created by laser cutting the structure from a sheet of cardboard, 3D printing two radiocontrast agent grids on to the surface and folding the structure into a rectangular prism with a viewing window. An abdominal imaging phantom was used to evaluate the device through CT imaging and the targeting of lesions for needle insertion. The lesion targeting trials resulted in a mean targeting error of 1.88 mm with a standard deviation of 0.73 mm. The device attaches to the patient and is rigid enough to adequately support standard biopsy needles, reducing the effect of gravity and the risk of laceration by the needles, making it potentially advantageous for biopsy of superficial lesions and lesions approached from a horizontal orientation. The device supports insertion of multiple needles at once, making it particularly suitable for composite ablation using multiple needles. Another advantage of the device is that it can guide off-axial needle insertion. The low-cost and disposability of the device make it well-suited for the minimally invasive image guided therapy environment.

An Electromagnetic Tracking Needle Clip: An Enabling Design for Low-Cost Image-Guided Therapy

2018 ◽  
Author(s):  
Zhuo Zhao ◽  
Sheng Xu ◽  
Bradford Wood ◽  
Zion Tsz Ho Tse
Keyword(s):  
Minimally Invasive ◽  
Medical Devices ◽  
Low Cost ◽  
Line Of Sight ◽  
Computer Assisted ◽  
Electromagnetic Tracking ◽  
Image Guided Therapy ◽  
Image Guided ◽  
Tracking Technology ◽  
Guided Therapy

Computer-assisted interventions (CAI) — which offer advantages such as increased accuracy, reduction of complications, and decreased intervention time — have increased in prevalence in recent years. A type of CAI called image-guided therapy (IGT) can be used to provide navigation for freehand procedures or guidance for localization of medical devices. Electromagnetic (EM) tracking technology can track instruments such as needle tips inside the patient body without the need for a line-of-sight, allowing for minimally invasive imaging-guided procedures [1–3].

scholarly journals CT Guided Stereotactic Brain Tumor Biopsy

2020 ◽  
Vol 9 (2) ◽  
pp. 86-93
Author(s):  
Moududul Haque ◽  
Sudipta Kumar Mukherjee ◽  
Mustafa Kamal ◽  
ABM Manwar Hossain
Keyword(s):  
Brain Tumor ◽  
Stereotactic Biopsy ◽  
Low Cost ◽  
Brain Lesions ◽  
Normal Brain ◽  
Normal Brain Tissue ◽  
Tumor Biopsy ◽  
Ct Guided ◽  
Image Guided ◽  
Stereotactic Biopsies

153 cases of CT guided stereotactic biopsies for intra-axial deep seated brain lesions performed by one neurosurgeon has been analyzed regarding procedure, success rate and complications. Of the 153 cases, positive tissue biopsy was found in 143 cases. In 6 patients, biopsy showed gliotic grain tissue or normal brain tissue.4 patients had complications after the procedure. Three patient developed intracerebral haemorrhage of the two died, and other died Massive MI. There was no post operative new deficits seen. CT guided Stereotactic biopsy is a very effective and low cost procedure caomparing with frameless image guided brain biopsies or open craniotomy for biopsy due to it’s higher complication rate. The detail procedure are being discussed Bang. J Neurosurgery 2020; 9(2): 86-93

scholarly journals Minimally invasive image-guided therapy for inoperable hepatocellular carcinoma: What is the evidence today?

2010 ◽  
Vol 1 (3) ◽  
pp. 167-181 ◽  
Author(s):  
Beatrijs A. Seinstra ◽  
Otto M. van Delden ◽  
Karel J. van Erpecum ◽  
Richard van Hillegersberg ◽  
Willem P. Th. M. Mali ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Minimally Invasive ◽  
Image Guided Therapy ◽  
Image Guided ◽  
Guided Therapy

scholarly journals Laser-Assisted Printed Flexible Sensors: A Review

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1462 ◽  
Author(s):  
Tao Han ◽  
Anindya Nag ◽  
Nasrin Afsarimanesh ◽  
Subhas Chandra Mukhopadhyay ◽  
Sudip Kundu ◽  
...  
Keyword(s):  
Laser Ablation ◽  
3D Printing ◽  
Laser Cutting ◽  
Raw Materials ◽  
Low Cost ◽  
Market Survey ◽  
Strain Sensing ◽  
Flexible Sensors ◽  
Significant Research ◽  
Varied Range

This paper provides a substantial review of some of the significant research done on the fabrication and implementation of laser-assisted printed flexible sensors. In recent times, using laser cutting to develop printed flexible sensors has become a popular technique due to advantages such as the low cost of production, easy sample preparation, the ability to process a range of raw materials, and its usability for different functionalities. Different kinds of laser cutters are now available that work on samples very precisely via the available laser parameters. Thus, laser-cutting techniques provide huge scope for the development of prototypes with a varied range of sizes and dimensions. Meanwhile, researchers have been constantly working on the types of materials that can be processed, individually or in conjugation with one another, to form samples for laser-ablation. Some of the laser-printed techniques that are commonly considered for fabricating flexible sensors, which are discussed in this paper, include nanocomposite-based, laser-ablated, and 3D-printing. The developed sensors have been used for a range of applications, such as electrochemical and strain-sensing purposes. The challenges faced by the current printed flexible sensors, along with a market survey, are also outlined in this paper.

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