Design of an Ultrasound Probe Holder to Minimize Motion Artifact During Sonography

2020 ◽  
Author(s):  
Smruti Mahapatra ◽  
Tarana Parvez Kaovasia ◽  
Sufia Ainechi ◽  
Ana Ainechi ◽  
Molly Acord ◽  
...  
Keyword(s):  
Image Quality ◽  
Ultrasound Image ◽  
Motion Artifact ◽  
Hand Movements ◽  
Operating Table ◽  
Imaging Procedures ◽  
Ultrasound Probe ◽  
3D Printed ◽  
Probe Holder ◽  
Minimize Motion Artifact

Abstract Standard diagnostic ultrasound imaging procedures heavily rely on a sonographer for image acquisition. Given the ultrasound probe is manually manipulated by the sonographer, there is a potential for noise artifacts like blurry acquired images caused by involuntary hand movements. Certain surgical procedures can also cause patients to exhibit involuntary “jumping” movements while on the operating table leading to further deterioration in ultrasound image quality. In this study, we attempt to mitigate these problems by fabricating a 3D-printed ultrasound probe holder. Due to the lightweight nature of the device, it can attach to surgical retractors without influencing the functionality of the retractor. Therefore, the 3D printed probe holder not only reduces relative motion between the probe and the patient, but also reduce the need for a sonographer during complex surgeries.

A 3D printed phantom for Image Quality Assessment in Cone-beam CT

2018 ◽  
Vol 52 ◽  
pp. 170
Author(s):  
James O’Halloran ◽  
Paddy Gilligan ◽  
Sinead Cleary ◽  
Susan Maguire ◽  
Gerald O’Connor ◽  
...  
Keyword(s):  
Image Quality ◽  
Quality Assessment ◽  
Image Quality Assessment ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
3D Printed

scholarly journals Feasibility and Quality Determinants of 3D Sonography in Children With Hydronephrosis

2017 ◽  
Vol 34 (1) ◽  
pp. 31-36
Author(s):  
Hansel J. Otero ◽  
Juan J. Cerrolaza ◽  
Judyta Loomis ◽  
Amanda George ◽  
Elijah Biggs ◽  
...  
Keyword(s):  
Image Quality ◽  
Pediatric Patients ◽  
Motion Artifact ◽  
Infants And Toddlers ◽  
Average Quality ◽  
Good Image Quality ◽  
Kidney Size ◽  
Good Image ◽  
3D Sonography

The objective was to determine the image quality of 3D diagnostic medical sonography (DMS) in children with hydronephrosis. 3D DMS was assessed based on 24 pediatric patients. Image quality was evaluated by two radiologists and a sonographer in terms of rib shadowing, cut-off parenchymal edges, motion artifact, and overall quality. The interreader reliability and relation between image quality and other variables were calculated. The results were based on images of 32 hydronephrotic kidneys. The average quality scoring of the images was quite high. Rib shadowing, cut-off edges, and motion artifact were present in the majority of the cases. The interreader reliability for overall quality, rib shadowing, cut-off, and motion was quite high. There was a correlation between the Society for Fetal and Neonatal Urology’s hydronephrosis grade and higher cut-off edges. Larger kidneys were more likely to show cut-off, motion, and lower quality scores. In this cohort of infants and toddlers with hydronephrotic kidneys, 3D DMS demonstrated good image quality; however, artifacts were attributed to kidney size and severity of hydronephrosis.

Denoising Ultrasound Medical Images

2017 ◽  
pp. 761-775
Author(s):  
A.S.C.S. Sastry ◽  
P.V.V. Kishore ◽  
Ch. Raghava Prasad ◽  
M.V.D. Prasad
Keyword(s):  
Image Quality ◽  
Medical Images ◽  
Ultrasound Image ◽  
Similarity Index ◽  
Speckle Noise ◽  
Ultrasound Images ◽  
Medical Ultrasound ◽  
Soft Thresholding ◽  
Block Based

Medical ultrasound imaging has revolutioned the diagnostics of human body in the last few decades. The major drawback of ultrasound medical images is speckle noise. Speckle noise in ultrasound images is because of multiple reflections of ultrasound waves from hard tissues. Speckle noise degrades the medical ultrasound images lessening the visible quality of the image. The aim of this paper is to improve the image quality of ultrasound medical images by applying block based hard and soft thresholding on wavelet coefficients. Medical ultrasound image transformation to wavelet domain uses debauchee's mother wavelet. Divide the approximate and detailed coefficients into uniform blocks of size 8×8, 16×16, 32×32 and 64×64. Hard and soft thresholding on these blocks of approximate and detailed coefficients reduces speckle noise. Inverse transformation to original spatial domain produces a noise reduced ultrasound image. Experiments on medical ultrasound images obtained from diagnostic centers in Vijayawada, India show good improvements to ultrasound images visually. Quality of improved images in measured using peak signal to noise ratio (PSNR), image quality index (IQI), structural similarity index (SSIM).

Application of T1-weighted BLADE sequence to abdominal magnetic resonance imaging of young children: a comparison with turbo spin echo sequence

2020 ◽  
Vol 61 (10) ◽  
pp. 1406-1413
Author(s):  
Kyu Sung Choi ◽  
Young Hun Choi ◽  
Jung-Eun Cheon ◽  
Woo Sun Kim ◽  
In One Kim
Keyword(s):  
Image Quality ◽  
Spin Echo ◽  
Motion Artifact ◽  
Turbo Spin Echo ◽  
Resonance Imaging ◽  
Turbo Spin ◽  
Abdominal Magnetic Resonance Imaging ◽  
Vessel Sharpness ◽  
Corticomedullary Differentiation ◽  
Lesion Conspicuity

Background The image quality of abdominal magnetic resonance imaging (MRI) in children who cannot hold their breath has been severely impaired by motion artifacts. Purpose To evaluate the usefulness of T1-weighted (T1W) BLADE MRI for axial abdominal imaging in children who cannot hold their breath. Material and Methods Two different BLADE sequences, with and without an inversion recovery (IR-BLADE), were compared to conventional turbo-spin echo (TSE) with a high number of excitations in 18 consecutive patients who cannot hold their breath. Overall image quality, motion artifact, radial artifact, hepatic vessel sharpness, renal corticomedullary differentiation, and lesion conspicuity were retrospectively assessed by two radiologists, using 4- or 5-point scoring systems. Signal variations of each sequence were measured for a quantitative comparison. The acquisition times of the three sequences were compared. Results IR-BLADE and BLADE showed significantly improved overall image quality and reduced motion artifact compared with TSE. IR-BLADE showed significantly better hepatic vessel sharpness and corticomedullary differentiation compared to both BLADE and TSE. Radial artifacts were only observed on IR-BLADE and BLADE. In nine patients with lesions, there were no significant differences in lesion conspicuity among three sequences. Compared to TSE, both IR-BLADE and BLADE showed decreased signal variations in the liver and muscle, and an increased signal variation through air. The mean acquisition times for IR-BLADE, BLADE, and TSE were comparable. Conclusion Compared to the TSE sequence, T1W IR-BLADE for pediatric abdominal MRI resulted in improved image quality, tissue contrast with a diminished respiratory motion artifact, and a comparable acquisition time.

Sign in / Sign up

Export Citation Format

Share Document