We read with interest the recent article in Indian Pediatrics [1] on the use of radiodensity measurements on chest Xrays of children with airway foreign bodies using a postprocessing software. Diagnosis of foreign body aspiration from a chest X-ray is challenging as findings may be subtle, and may appear normal to the busy clinician. A voluntary expiratory X-ray is rarely possible in young chil...

X-ray computed tomography (CT) is a popular tool for non-destructively producing cross-sectional and volumetric images of physical objects[1]. In this technology, an X-ray source and a detector are mounted on a rotating gantry, and X-ray images from many different angles are acquired and then passed to a reconstruction program to create volumetric images. Unfortunately, the gantry and the rotat...

With wide industrial application, computerized tomography (CT) is a rapidly developing technique that is especially useful for imaging and measuring multi-component and multi-phase processes. Tomographic measurements can be obtained by using different sensors, such as X-ray, ultrasonic, optical and microwave sensors, as well as electrical impedance electrodes [6]. X-ray, ultrasonic and microwav...

Simultaneous post-traumatic ipsilateral fracture of femur head and subcapital femur neck without hip dislocation is a rare presentation and easily missed on X-ray imaging. A 48 years old male, with a history of high-energy road traffic accident, presented to us with severe pain in the left hip region and inability to ambulate. Preliminary X-ray showed impacted subcapital fracture with varus ang...

High cost and complexity of commercial X-ray computed tomography systems act as a barrier to the adoption of such technology by small and medium sized companies. The work presented here attempts to address these issues through the development of affordable solutions for both CT reconstruction and X-ray projection data set acquisition.

We describe a new approach to detect the ssures between the lobes of the lungs in computed tomography (CT) scans. We focus on the detection of the major ssures in diagnostic CT. Our approach is to rst nd a region containing the ssure and then extract the ssure within this region by analyzing local features. We developed a \marching-bar method" to segment the region containing the ssure. After t...

Percutaneous preoperative localisation of breast tumours using a hook-wire needle is a standard radiological practice. The use of a hook-wire in preoperative localisation of pulmonary nodules under computed tomography guidance has also been described in overseas publications. We describe herein our local experience with the use of a hook-wire needle that is primarily used in breast tumours in p...