Khan M. Siddiqui

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This paper proposes a new algorithm for the efficient, automatic detection and localization of multiple anatomical structures within three-dimensional computed tomography (CT) scans. Applications include selective retrieval of patients images from PACS systems, semantic visual navigation and tracking radiation dose over time. The main contribution of this(More)
The authors review a decade's experience in the nation's first filmless radiology department and outline the challenges and rewards of the transition. They summarize their experience with 10 cautionary and informative lessons on making the process more successful, more efficient, and less stressful. A number of possible avenues of new research and(More)
Planning and executing the redesign of a traditional institutional radiology reading room to conform to the radically different requirements of digital imaging are reviewed, with examples drawn from the authors' experience and from the growing body of literature on this subject. Included are best-practice recommendations and real-life examples on initial(More)
OBJECTIVE Three-dimensional and multiplanar reconstruction of CT images has become routine in diagnostic imaging. The technology also facilitates surface reconstruction, in which facial features and, as a result, patient identity may be recognized, leading to risk of violations of patient privacy rights. The purpose of this study was to assess whether(More)
The digital revolution in radiology introduced the need for electronic export of medical images. However, the current export process is complicated and time consuming. In response to this continued difficulty, the Integrating the Healthcare Enterprise (IHE) initiative published the Teaching File and Clinical Trial Export (TCE) integration profile. The IHE(More)
The transformation from film-based to filmless operation has become more and more challenging, as imaging studies expand in size and complexity. To adapt to these changes, radiologists must proactively develop new workflow strategies to compensate for increasing work demands and the existing workforce shortage. This article addresses the evolutionary(More)
INTRODUCTION The process of radiologic interpretation has been revolutionized with the adoption of filmless imaging. Despite the radical change in viewing techniques and a rapidly expanding array of display, navigation, and manipulation tools, the keyboard-and-mouse configuration remains the standard for user interaction during radiologic interpretation. (More)
PURPOSE To compare economic aspects of equipment configurations, productivity levels, and patient waiting times in the performance of computed radiography (CR) and direct radiography (DR). MATERIALS AND METHODS The study received internal review board exemption status, without the need for informed patient consent. Data from four study sites were used to(More)
We have investigated the effects of diffusive and convective transport on fibrinolysis. Using a constant pressure drop (delta P/L) from 0 to 3.7 mmHg/cm-clot to drive fluid permeation, various regimes of lytic agents were delivered into fine and coarse fibrin gels (3 mg/ml) and whole blood clots. Using plasmin (1 microM) delivered into pure fibrin or(More)