Postprocedural chest radiograph is done to illustrate the position of endotracheal tubes (ETTs), nasogastric and drainage tubes, indwelling catheters, and intravascular lines or any other lifesaving devices to confirm their position. These devices are intended to save life, but may be life-threatening if in the wrong place. The incidence of malposition and complications ranges from 3% to 14%, respectively. The portable chest radiograph is of tremendous value, inexpensive and can be obtained quickly at the patient's bedside in any location of the hospital. A systemic literature search was performed in PubMed and the Cochranre library by setting up the search using either single text word or combinations. Those studies were also included where the chest radiograph was compared with other imaging modalities. Its clinical efficacy, cost-effectiveness and practicality allow anesthesiologist to evaluate the post-procedural position and complications of ETT, indwelling catheters, and multi lumen intravascular lines. Knowledge of the radiological features of commonly used devices is of utmost importance.

This study presents the design of a low‐cost fractal antenna loaded with parasitic edge‐coupled (EC) split ring resonators (SRR). Parasitic EC SRR elements result in improved impedance matching leading to improved bandwidth. The basic resonant structure is a circular patch antenna designed at 3.2 GHz on low‐cost FR4 substrate with relative permittivity 4.4, and 1.6 mm thickness. A single iteration of circular patch and slots is used to make it fractal and in order to achieve multiband performance, the antenna is inset fed by a 50 Ω microstrip line. A prototype of the proposed antenna is fabricated and tested for results, a comparison between fractal antenna with and without SRRs is made and the results confirm that a better impedance matching is achieved in the later case, also a 3% increase in bandwidth is achieved at 8.5 GHz. A good agreement between simulated and measured results is obtained, an estimated gain of 13.3 dB is provided by the proposed antenna. The overall dimensions of the antenna are 45 mm × 45 mm and it may be used for wireless applications at 3, 5, 6.8, 7.5 and 8.5 GHz with an average bandwidth of 200 MHz.

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