Towards clinical application of freehand optical ultrasound imaging

Freehand optical ultrasound (OpUS) imaging is an emerging ultrasound imaging paradigm that uses an array of fibre-optic, photoacoustic ultrasound sources and a single fibre-optic ultrasound detector to perform ultrasound imaging without the need for electrical components in the probe head. Previous freehand OpUS devices have demonstrated capability for real-time, video-rate imaging of clinically relevant targets, but have been hampered by poor ultrasound penetration, significant imaging artefacts and low frame rates, and their designs limited their clinical applicability. In this work we present a novel freehand OpUS imaging platform, including a fully mobile and compact acquisition console and an improved probe design. The novel freehand OpUS probe presented utilises optical waveguides to shape the generated ultrasound fields for improved ultrasound penetration depths, an extended fibre-optic bundle to improve system versatility and an overall ruggedised design with protective elements to improve probe handling and protect the internal optical components. This probe is demonstrated with phantoms and the first multi-participant in vivo imaging study conducted with freehand OpUS imaging probes, this represents several significant steps towards the clinical translation of freehand OpUS imaging

Non-iterative model-based inversion for low channel-count optical ultrasound imaging

Ultrasound image reconstruction is typically performed using the computationally efficient delay-and-sum algorithm. However, this algorithm is suboptimal for systems of low channel counts, where it causes significant image artefacts. These artefacts can be suppressed through model-based inversion approaches; however, their computational costs typically prohibit real-time implementations. In this work, the emerging optical ultrasound (OpUS) modality is considered, where ultrasound waves are both generated and detected using light. With this modality, imaging probes comprise very low channel counts, resulting in significant image artefacts that limit the imaging dynamic range. However, this low channel counts offer an opportunity for non-iterative (“direct”) model-based inversion (DMI) on modest computational resources available in a typical workstation. When applied to both synthetic and experimental OpUS data, the presented DMI method achieved substantial reduction in image artefacts and noise, improved recovery of image amplitudes, and–after one-off pre-computation of the system matrices–significantly reduced reconstruction time, even in imaging scenarios exhibiting mild spatial inhomogeneity. Whilst here applied to an OpUS imaging system, DMI can be applied to other low channel-count imaging systems, and is therefore expected to achieve better image quality, reduce system complexity, or both, in a wide range of settings

The Iowa Homemaker vol.2, no.10

Table of Contents Mirrors – Antique to Ultra Modern by Mildred Boyt, page 1 As We Buy Meat by Viola M. Bell, page 2 A Trip Through Healthland by Ethel Huebner, page 3 Providing Worthy Use of Leisure Time for the High School Student, page 4 Informality Predominates the Sunday Night Lunch by Eleanor Murray, page 5 Simple Service for Home Meals, page 6 Planning The Home Grounds by Juanita Beard, page 7 A Pillow for Every Need by Esther Ellen Rayburn, page 7 Who’s There and Where by Jeanette Beyer, page 8 From the Trite to the Novel in Handkerchiefs by Harriett Schleiter, page 1

The Iowa Homemaker vol.2, no.9

Table of Contents The Giving of the Gift by Alice Dodge, page 1 Christmas Dinner Done in Reds and Greens by N. Beth Bailey, page 2 Where Does Christmas Come From by Gertrude Murray, page 3 Iowa State Welcomes New Dean of Home Economics by Eleanor Murray and Helen Hamilton, page 4 Basketry – A Modernized Ancient Art by Juanita Beard and Gladys McVay, page 4 From “H. Ec.” to Geisha Girls and Russian Refugees by Jeanette Beyer, page 6 If You Make Your Own by Iva L. Brandt, page 7 Who’s There and Where by Jeanette Beyer, page 8 Make Your Kitchen Attractive by Ethel Huebner, page 1

The Iowa Homemaker vol.3, no.1

Table of Contents A Greeting to Iowa Homemakers by Miss Anna J. Richardson, page 1 Where Are the Birds? by J. E. Guthrie, page 2 Her Summer Lingerie by Lucile Barta, page 3 Planting the Back Yard “Forty” by E. C. Volz, page 4 When April Weeps by Eleanor Murray, page 5 Garden Accessories by Juanita Beard, page 6 A Study in Yellow and White by Helen Reidy, page 6 Kiddies Clothes for Spring by Grace Heidbreger and Grace Bourland, page 7 Who’s There and Where by Eleanor Murray and Jeanette Beyer, page 8 The Economy Game and How the Turners Played It by Helen Lamb, page 1

The Iowa Homemaker vol.2, no.8

Table of Contents Make Thanksgiving a Real Homecoming With a Dinner in Your Church by N. Beth Bailey, page 1 Marie Reviews Fifth Avenue by Mildred Boyt, page 2 Art, As Frank Alvah Parsons Sees It by Viola Jammer, page 2 Costuming and Its Relation to the Individual by Marion B. Gardner, page 3 Painting the Fall and Winter Landscapes by Juanita Beard, page 4 “A Timely Thought Saves Nerves Distraught” by Maida Heiner, page 4 In the Light of Experience by Marcia E. Turner, page 5 Naming Canned Fruits by Katherine Goeppinger, page 5 Who’s There and Where by Jeanette Beyer, page 6 A Tea Room That is Different by Opal F. Milligan, page 7 Sour Milk and Its Uses by Elizabeth Storm, page 7 An Indian Romance by Millie Lerdall, page 10 The Song of Thanksgiving Pie by Eleanor Murray, page 13 Scarlet November by Eleanor Murray, page 1

The Iowa Homemaker vol.3, no.3-4

Table of Contents The Architectural Design of a Home by Allen Holmes Kimball, page 1 “For a Man’s House Is His Castle” by Alda Wilson, page 2 The Economics of Consumption compiled by John E. Brindley, page 3 Sunfast and Tubfast Materials by Pearl Apland, page 5 On Our Street by Juanita J. Beard, page 6 Who Is Responsible for the Child? by Orange H. Cessna, page 7 Summer Suppers by N. Beth Bailey, page 8 Vacation First Aid by Dr. Mary Sheldon, page 9 Episodes Concerning Evolution of Home Economics by Ruth Elaine Wilson, page 10 Extravagant Economics by Blanche Ingersoll, page 11 Breakfast Bridge by Eleanor Murray, page 12 Veishea Celebrates First Birthday by Helen G. Lamb, page 1

Pennsylvania Folklife Vol. 33, No. 4

• I Remember Well: Thirty-Five Years of the Kutztown Folk Festival • Furniture Graining • Old Fashioned Clear Toy Candy • Metal Etching • Stenciling • Baskets and Basket Weavers • Apple Butter: Then and Now • Festival Focus • Festival Programs • 20th Annual Quilting Contest • Quilts and Quilt Marking • The Art of the Pennsylvania Dutch • Music on the Main Stage • Scratchboard • Pennsylvania Dutch Folk Art in Wood • The Windsor Chair • Hex Signshttps://digitalcommons.ursinus.edu/pafolklifemag/1104/thumbnail.jp