BACKGROUND The purpose of this study was to evaluate the usefulness of hook wire localization biopsy under imaging guidance for nonpalpable breast lesions detected radiologically. METHODS This was a descriptive study conducted at the Department of Radiology, Aga Khan University Hospital, Karachi. All patients undergoing needle localization biopsy of a nonpalpable breast lesion under mammograp...

INTRODUCTION Between January 2000 and December 2005, a total of 30 cases of impalpable suspicious breast lesions (microcalcifications or impalpable lumps classified as BRADS IV and above) were biopsied after hook wire localization. This is a retrospective review of these cases. RESULTS One third of the suspicious lesions were malignant or pre-malignant. All these had further oncological treat...

Purpose Describe the surgical technique of talocalcaneal coalition resection using live CT navigation. Methods A ten-year-old female with left talocalcaneal coalition hindfoot pain refractory to conservative management underwent surgical coalition resection using live CT navigation. The procedure and discussion of this technique is described in detail. Results With minimal radiation exposur...

Guided wave imaging with a distributed array of inexpensive transducers offers a fast and cost-efficient means for damage detection and localization in plate-like structures such as aircraft and spacecraft skins. As such, this technology is a natural choice for inclusion in condition-based maintenance and integrated structural health management programs. One of the implementation challenges res...

This dissertation develops a robust, data-driven localization methodology based on the integration of matched field processing with compressed sensing l1 recovery techniques and scale transform signal processing. The localization methodology is applied to an ultrasonic guided wave structural health monitoring system for detecting, locating, and imaging damage in civil infrastructures. In these ...

This study aimed to determine the efficacy of intraoperative ultrasonography-guided wire localization guided breast-conserving surgery (BCS) for nonpalpable breast cancer and compare it to conventional preoperative wire localization (PWL) guided surgery.We retrospectively analyzed the medical charts of 214 consecutive nonpalpable breast cancer patients who underwent BCS using intraoperative ult...

BACKGROUND Ultrasound-guided paracentesis is commonly performed in the emergency department (ED) setting. Injury to the inferior epigastric artery (IEA) is an uncommon but potentially life-threatening complication of paracentesis. Use of anatomic landmarks has been recommended to avoid this structure. If feasible, sonographic localization of the IEA before ultrasound-guided paracentesis may pro...

Minimally invasive image guided interventions are an attractive option for localized therapy delivery and diagnostic biopsy. We have developed a method for CT guided needle placement, based upon the Brown-Roberts -Wells frame, which requires no immobilization or fiducial implantation. A localization module, placed on a needle holding robotic end effector, allows for localization of the effector...

PURPOSE Surgical excision is the definitive treatment for localized recurrence of papillary thyroid carcinoma. Reoperation for recurrence, however, is challenging and associated with increased operative times and complication rates. For safe and effective reoperation, ultrasound-guided charcoal tattooing localization can be used. The aim of this study was to investigate the feasibility and safe...