Realistic medical procedure simulators improve the learning curve of the clinicians if they can reproduce real conditions and use. This paper describes the improvement of a transrectal ultrasound guided prostate biopsy simulator by adding the simulation of real-time prostate movements and deformations. A discrete bio-mechanical model is used to modify a 3D texture of an ultrasound image volume ...

This paper describes a high resolution freehand 3D ultrasound system, whose accuracy surpasses that of previously documented systems. Such accuracy is achieved through a series of novel system design and calibration techniques. The accuracy is quantified using a purpose-built, tissue-mimicking phantom, designed to create idealised in vivo scanning conditions. The paper includes a thorough discu...

On the accuracy of prenatal 3D ultrasound of cleft hard palate when cleft lip is present Bäumler MA, Faure JM, Bigorre M, Bäumler-Patris C, Boulot P, Demattei C, Captier G. Ultrasound Obstet Gynaecol 2011 Jan 12 Epub. Of 79 cases with prenatal diagnosis of uni or bilateral cleft a correct diagnosis using axial 3D scanning was made in 77. All cases were verified at birth. The sensitivity of dete...

We present an algorithm which combines non-rigid image-based registration and conventional position sensing to correct probe-pressure-induced registration errors in freehand three-dimensional (3D) ultrasound volumes. The local accuracy of image-based registration enables the accurate freehand acquisition of high resolution (> 15MHz) 3D ultrasound data, opening the way for 3D musculoskeletal exa...

Objectives. To determine the existence and extent of ethnic differences in 2D or 3D fetal frontomaxillary facial angle (FMFA) measurements. Methods. During routine 11-14 weeks nuchal translucency screening undertaken in a private ultrasound practice in Sydney, Australia, 2D images and 3D volumes of the fetal profile were collected from consenting patients. FMFA was measured on a frozen 2D ultra...

3D HFU: 3-dimensional high-frequency ultrasound scan CSAMI: Cutaneous Sarcoidosis Activity and Morphology Instrument PET/CT: positron emission tomography/ computed tomography C utaneous involvement occurs in 25% to 30% of patients with sarcoidosis. Effective treatment of the disease has historically been challenging given a lack of an objective, reproducible marker of disease activity. Here we ...

patients with autoimmune pancreatitis show typical signs of hypervascularization in contrast-enhanced high mechanical index endoscopic ultrasound (CEHMI EUS) [1]. Contrast-enhanced low mechanical index endoscopic ultrasound (CELMI EUS) is a newly developed technique that should show a different contrast-enhancing effect. To explore the effect of CEHMI EUS (picture acquisition●" Fig. 1a and 1b) ...

OBJECTIVE To present the early 2D and 3D ultrasound findings and the molecular confirmation in a case of thanatophoric dysplasia. METHODS On ultrasound examination, there was frontal bossing, increased nuchal translucency and short limbs at 12 weeks' gestation and a small thorax and short and bowed long bones on 3D at 16 weeks. Amniocentesis and DNA analysis confirmed the mutation of FGFR3 ge...

Fetal central nervous system midline structures represent an essential landmark for the confirmation of normality or for the identification of severe pathology. The ultrasound examination of the fetal brain using modern 3D techniques allows the creation of high sensitivity reconstructions. The facility of 3D volume acquisition permits the identification of corpus callosum, median septum, cavum ...

3D imaging system was developed utilizing a combination of sparse 2D arrays, the synthetic aperture focusing technique, and coded excitation of a solution for high-speed 3D ultrasound imaging, since it could formulate multiple transmitting beams as well as receiving beams with a minimum number of transmissions. A 40 × 40 array of PZT elements was fabricated with a conventional dice-and-fill pro...