Biopsy Needle and Tissue Deformations Detection in Elastography Supported Ultrasound

2016 ◽  
pp. 85-96 ◽  
Author(s):  
Joanna Czajkowska ◽  
Jan Juszczyk ◽  
Bartlomiej Pycinski ◽  
Ewa Pietka
Keyword(s):  
Biopsy Needle ◽  
Tissue Deformations

Rotational phantom for evaluating MR biopsy needle artifacts.

1997 ◽  
Vol 168 (5) ◽  
pp. 1383-1384 ◽  
Author(s):  
C J Hor ◽  
F J Katterbach
Keyword(s):  
Biopsy Needle

scholarly journals Birmingham Intervention Tent Technique (BITT): A Technical Note

2021 ◽  
Author(s):  
R. Rajakulasingam ◽  
J. Kho ◽  
G. Almeer ◽  
C. Azzopardi ◽  
S. L. James ◽  
...  
Keyword(s):  
Technical Note ◽  
Direct Approach ◽  
Biopsy Needle ◽  
Biopsy Technique ◽  
Reproducible Technique

Abstract Objective We describe a novel and safe CT biopsy technique that we have termed the “Birmingham intervention tent technique (BITT).” This technique is ideal for biopsying osseous lesions where a direct approach is not possible due to difficult positioning. Methods The BITT uses a plastic surgical forceps clamp attached at an angle to the biopsy needle, creating a tent shape. The finger rings of the forceps is stabilized on the table. Results In our institution, we have already used the BITT successfully in over 10 cases. Conclusion The BITT is an inexpensive and reproducible technique.

scholarly journals Inadvertent arterial & venous injury by bone marrow biopsy needle: case report on rescue embolization techniques

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Chris Siu-Chun Tsai ◽  
Simon Chun-Ho Yu
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Biopsy ◽  
Vascular Injury ◽  
Iliac Artery ◽  
Morbidity And Mortality ◽  
Biopsy Needle ◽  
Venous Injury ◽  
Patient Morbidity ◽  
Internal Iliac ◽  
Life Threatening

Abstract Background Bone marrow biopsy is a common medical procedure for diagnosis and characterization of haematological diseases. It is generally regarded as a safe procedure with low rate of major complications. Inadvertent vascular injury is however an uncommon but important complication of bone marrow biopsy procedure. The knowledge of a safe and effective embolization method is crucial for interventional radiologists to reduce significant patient morbidity and mortality, shall such inadvertent vascular injury occurs. Case presentation Bedside bone marrow biopsy was performed for an elderly gentleman to evaluate for his underlying acute leukaemia. Biopsy needle inadvertently injured the internal iliac artery and vein during the procedure. Coil embolization was carefully performed across injured arterial segment via the culprit biopsy needle until contrast cessation. Concomitant venous injury was subsequently confirmed on angiography when the needle was withdrawn for a short distance from the iliac artery. This venous injury was tackled by further withdrawing the biopsy needle to distal end of the bone marrow tract for tract embolization with coils and gelatin sponges. High caution was made to avoid coil dislodgement into the iliac vein, to prevent pulmonary embolism. Patient was clinically stable throughout the procedure. Post-procedure contrast CT shows no pelvic haematoma or contrast extravasation. Conclusions This case illustrates rescue embolization techniques for rare life-threatening concomitant internal iliac arterial and venous injuries by a bone marrow biopsy needle. Interventional radiologists can play an important role in carrying out precise embolization to avoid significant patient morbidity and mortality in the case of life-threatening haemorrhage.

MRI-Guided Breast Biopsy:Clinical Experience with 14-Gauge Stainless Steel Core Biopsy Needle

2004 ◽  
Vol 182 (4) ◽  
pp. 1075-1080 ◽  
Author(s):  
Xiaoming Chen ◽  
Constance D. Lehman ◽  
Katherine E. Dee
Keyword(s):  
Stainless Steel ◽  
Core Biopsy ◽  
Biopsy Needle ◽  
Steel Core ◽  
Mri Guided ◽  
Gauge Stainless Steel

Comments on the Myoelastic - Aerodynamic Theory of Phonation

1980 ◽  
Vol 23 (3) ◽  
pp. 495-510 ◽  
Author(s):  
Ingo R. Titze
Keyword(s):  
Vocal Fold ◽  
Vocal Tract ◽  
Driving Forces ◽  
Vibrational Amplitude ◽  
Subglottal Pressure ◽  
Vertical Displacements ◽  
Vocal Intensity ◽  
Tissue Deformations ◽  
Chest Voice ◽  
Phase Differences

The myoelastic-aerodynamic theory of phonation has been quantified and tested with mathematical models. The models suggest that vocal fold oscillation is produced as a result of asymmetric forcing functions over closing and opening portions of the glottal cycle. For nearly uniform tissue displacements, as in falsetto voice, the asymmetry in the driving forces can result from the inertia of the air moving through the glottis. This inertia can in turn be enhanced or suppressed by supraglottal or subglottal vocal tract coupling. More obvious and pronounced asymmetries in the driving forces are associated with non-uniform vocal fold tissue displacements. These are combinations of normal tissue modes, and can result in vertical and horizontal phase differences along the surfaces, as observed in chest voice. The ranges of oscillation increase among various models as more freedom in the simulated tissue movement is incorporated. Of particular significance in initiating and maintaining oscillation are the vertical motions that facilitate coupling of aerodynamic energy into the tissues and allow tissue deformations under conditions of incompressibility. Vertical displacements also can have a significant effect on vocal tract excitation. Control of fundamental frequency of oscillation (FO) is basically myoelastic, partially as a result of deliberate or reflex adjustments of laryngeal muscles, and partially as a result of nonlinear tissue strain over the vibrational cycle. This places limits on the control of FO by subglottal pressure, and forces such control to be inseparably connected with vibrational amplitude, or less directly, with vocal intensity.

619Methylated glutathione-S-transferase P1 in prostate biopsy needle washing solution as an additional diagnostic tool

2005 ◽  
Vol 4 (3) ◽  
pp. 157
Author(s):  
M. Auprich ◽  
H. Augustin ◽  
S. Mannweiler ◽  
P. Rehak ◽  
G. Tilz ◽  
...  
Keyword(s):  
Prostate Biopsy ◽  
Diagnostic Tool ◽  
Glutathione S Transferase ◽  
Biopsy Needle

scholarly journals Increased Needle Visibility in Ultrasound-Guided Percutaneous Liver Biopsy by an Echogenic Sheath: A Proof of Concept Study in a Human Cadaver

2021 ◽  
Author(s):  
Jana S. Hopstaken ◽  
Leon de Jong ◽  
Jurgen J. Fütterer
Keyword(s):  
Pilot Study ◽  
Liver Biopsy ◽  
Human Cadaver ◽  
Percutaneous Liver Biopsy ◽  
Ultrasound Guided ◽  
Biopsy Needle ◽  
Phantom Model ◽  
Likert Score ◽  
Contrast Analysis ◽  
Needle Visibility

Abstract Purpose For the safety and success of an ultrasound-guided percutaneous liver biopsy, needle visibility and needle tip identification are critical. The aim of this pilot study was to evaluate the influence of an innovative echogenic sheath placed over a standard biopsy needle on needle visibility in ultrasound imaging. Materials and methods Ultrasound videos of three sheaths with different coating characteristics (echogenicity) and one conventional liver biopsy needle were recorded at two angles (30° and 60°) and two depths (5 and 10 cm) in a human cadaver. The videos were blinded for needle type and presented to five independent radiologists who used Likert-scale scoring to rank each video for six characteristics on needle visibility. In addition, a phantom model was used to acquire standardized images for quantitative evaluation of the ultrasound visibility. Comparative statistical analysis consisted of a one-way ANOVA. Results The three prototype sheaths were ranked higher than the control needle at 60° with 5 cm depth, with an equal performance for the other conditions. The radiologists expressed more confidence in taking a biopsy with the echogenic sheaths than with the control needle, with 1 Likert score difference at 30°. Contrast analysis in the phantom model showed a statistically significant effect of a sheath (p = 0.004) on echogenic intensity. Conclusion This pilot study suggests that the use of an echogenic sheath may increase needle visibility, particularly for trajectories requiring steeper insertion angles. To investigate the superiority of the echogenic sheath over conventional needles, a clinical study is necessary.

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