a 29-year-old woman with systemic lupus erythematosus (sle) presented with palpitation and neck swelling. initial sonography showed an ill-defined hypoechoic lesion in the right thyroid gland, mentioning subacute thyroiditis. the patient received conservative care for one week. however, her neck swelling worsened and she complained of dyspnea. follow up sonography showed marked enlargement of b...

lingual thyroid (lt) is a rare developmental thyroid anomaly usually affecting. although the exact pathogenesis of this ectopic, accessory thyroid tissue is not known, it generally originates from epithelial tissue of non-obliterated thyroglossal ductus. in this report, a case of lingual thyroid in a 45- year old male patient with difficulty in breathing and swallowing complaints for five years...

We present a method to register a pre-operative 3D CT or MR volume to a set of intra-operative tracked ultrasound images. Our aim is to allow the transfer of information from pre-operative modalities to ultrasound images to aid needle placement during thermal ablation of liver metastases. Spatial correspondence between ultrasound slices is achieved by tracking the probe using a Polaris optical ...

A porous-structure nano-scale ultrasound contrast agent (UCA) was made of monomethoxypoly (ethylene glycol)-poly (lactic-co-glycolic acid) (mPEG-PLGA), and modified by double-targeted antibody: anti-carcinoembryonic antigen (CEA) and anti-carbohydrate antigen 19-9 (CA19-9), as a double-targeted nanoparticles (NPs). Anti-tumor drug paclitaxel (PTX) was encapsulated in the double-targeted nanopar...

Cryotherapy is a treatment modality that uses a technique to selectively freeze tissue and thereby cause controlled tissue destruction. The procedure involves placement of multiple small diameter probes through the perineum into the prostate tissue at selected spatial intervals. Transrectal ultrasound is used to properly position the cylindrical probes before activation of the liquid Argon cool...

Ultrasound-sensitive (sonosensitive) liposomes for tumor targeting have been studied in order to increase the antitumor efficacy of drugs and decrease the associated severe side effects. Liposomal contrast agents having Gd(III) are known as a nano-contrast agent system for the efficient and selective delivery of contrast agents into pathological sites. The objective of this study was to prepare...

Ultrasound medical image has drawn extensive attentions for clinical monitoring and pharmaceutics determination, and the quality of image plays essential role for accurate information interpretation. In order to improve the contrast of the ultrasound medical image, algorithm based on modified wavelet transformation method has been established and optimized in this article. The modules maximum c...

Ultrasound active liposomes currently have gained a lot of interest as therapeutic agents for targeted drug delivery. A well known problem is their fast clearance from the circulation and thus the short time frame for drug release. The use of ultrasound as external trigger for drug release is attractive because it can be easily focused and only few adverse effects on the healthy tissue can be o...

utilizing polymeric materials for damping mechanical waves is of great importance in various fields of applications such as military camouflage, prevention of structural vibrational energy transfer, and noise attenuation. this ability originates from segmental dynamics of chain-like polymer molecules. damping properties of styrene-butadiene rubbercontaining 10 wt% of monosize polystyrene partic...

Background: Ultrasound is established as a diagnostic tool in salivary glands for obstructive diseases such sialolithiasis and tumors. Concerning inflammatory non-sialolithiasis-caused obstruction, much fewer data are available. In recent years, technical development has allowed better assessment of the gland parenchyma, knowledge about intraductal pathologies increased considerably, which prov...