- Production of a clinical image using x-rays, ultrasound, computed tomography, magnetic resonance, radionuclide scanning, and thermography; especially, cross-sectional i., such as ultrasonography, CT, or MRI. See image.- blood pool i. nuclear medicine study using a radionuclide that is confined to the vascular compartment.- magnetic resonance i. (MRI) a diagnostic radiologic modality, using nuclear magnetic resonance technology, in which the magnetic nuclei (especially protons) of a patient are aligned in a strong, uniform magnetic field, absorb energy from tuned radiofrequency pulses, and emit radiofrequency signals as their excitation decays. These signals, which vary in intensity according to nuclear abundance and molecular chemical environment, are converted into sets of tomographic images by using field gradients in the magnetic field, which permits 3-dimensional localization of the point source s of the signals. SYN: nuclear magnetic resonance i., NMR i., nuclear magnetic resonance tomography.- transfer i. the production of an ultrasound image by detection and analysis of sound on the opposite side of the body from the emitting transducer. SYN: through transfer i..
* * *imaging n the action or process of producing an image esp. of a part of the body by radiographic techniques <advances in clinical diagnostic \imaging> <cardiac \imaging> see MAGNETIC RESONANCE IMAGING
* * *n.(in radiology) the production of images of organs or tissues by a range of techniques. These images are used by physicians in diagnosis and in monitoring the effects of treatment. They can also be used to guide interventional radiology techniques. See also computerized tomography, magnetic resonance imaging, ultrasonography.
* * *imag·ing (imґə-jing) the production of clarity, contrast, and detail in images, especially in radiological and ultrasound images.
Medical dictionary. 2011.