Functional Imaging: CT and MRI
Section snippets
The scanners
Volumetric physiologic imaging by way of x-ray CT had its beginning in the mid 1970s with the dynamic spatial reconstructor (DSR), the prototype of dynamic volumetric x-ray CT designed and installed at the Mayo Clinic [1]. Much of the work establishing the accuracy and precision of volumetric lung imaging was performed on the DSR [1], [2]. The primary lesson learned from the DSR was that lungs, in particular, must be studied dynamically and volumetrically. Commercial imaging technology
MRI
MRI has several advantages over CT, including the speed of imaging, the lack of ionizing radiation, the ability to identify tissue characteristics, and the potential to obtain information on different nuclei, which allows for novel approaches to lung function and micro-structure assessment.
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2015, Clinics in Chest MedicineCitation Excerpt :We hope that it will familiarize the community with the translation of techniques from research into clinical applied methodologies. As described, CT has developed rapidly into one of the most clinically requested investigations in medicine.1 A recent review of the history and development of CT on the occasion of the centenary meeting of the Radiological Society of North America is worth reading in this context.2
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2015, Murray and Nadel's Textbook of Respiratory Medicine: Volume 1,2, Sixth EditionMultimodality imaging of pulmonary infarction
2014, European Journal of RadiologyCitation Excerpt :The segmental distribution aids in the differentiation of infarction from other opacities with low iodine content such as tumour, pneumonia, or even streak artefact. Dynamic Perfusion CT is another technique with potential future applications in the assessment of infarction but its use has hitherto remained limited due to radiation concerns [26]. At present CTPA remains the principal diagnostic tool with the dual energy technique potentially providing a future one-stop morphological and functional test.