Topic: an evaluation of contrast timing for use in computrised tomography pulmonary embolism utilising automatic injectors.
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I need to write about this topic in diagnostic imaging.

indications, advantages, disadvantages, limitations and possible complications.

please mention a rational for choosing this topic to write about.
the guidelines for the headings and the structure is attached. It is important to use recent sources. It is important to critique the sources that you are going to use.

please don’t exceed 3000 words.