Medical imaging and

MRI has become the preferred modality for medical and diagnostic imaging due to the superior resolution and contrast in the images. MRI has several advantages over X-ray CT, in that MRI does not result in any accumulated ionizing radiation dose to the subject, and it can detect spinal lesions, such as multiple sclerosis, that would otherwise go undetected in X-ray CT (see Appendix Brief history of medical imaging, and refs [1-9]). However, MRI does pose a minimal risk to the subject in several ways. 

Engl, H W and W. Rundell Inverse Problems in Medical Imaging and Nondestructive Testing. Springer-Verlag. Inc., New York. NY, 1997. 

We have discussed the fundamentals of medical imaging and have covered several matters including some definitions, image detectors and recorders, sources of medical images, and image processing systems. 

Fig. 6.20 (a) Piezoceramic parts for a range of applications including accelerometers, underwater acoustics, pressure and liquid level sensors, medical diagnostics and therapeutics and NDT the ultrasound focusing bowls are for medical imaging and for producing high-intensity focused ultrasound. 

American Society of Radiologic Technologists (2008). Computed tomography in the 21st century - Changing practice for medical imaging and radiation therapy professionals, Albuquerque, NM... 

C. D. Carr and S. M. Moore. 2003. IHE A model for driving adoption of standards. Computerized Medical Imaging and Graphics 27 1-10. 

F. Cao, H. K. Huang, and X. Q. Zhou. 2003. Medical image security in a HIPAA mandated PACS environment. Computerized Medical Imaging and Graphics 27 1-12. 

Tone Cappelen Department of Nuclear Medicine, Division of Medical Imaging and Intervention, The Norwegian Radium Hospital, Rikshospitalet University Hospital, 0310 Oslo, Norway Jan Frede Unhjem Norwegian Radiation Protection Authority, 1332 0ster s, Norway... 

Iodine (chemical symbol I) is a nonmetallic solid element. There are both radioactive and non-l adioactive isotopes of iodine. Iodine-129 and -131 are the most important radioactive isotopes in the environment. Some isotopes of iodine, such as 1-123 and 1-124 are u.sed in medical imaging and treatment, but are generally not a problem in the environment because tliey have very short half-lives. 

Its tendency to collect in the thyroid gland makes iodine e.speciaily useful for diagnosing and treating thyroid problems. Iodine-123 is widely used in medical imaging, and 1-124 is useful in immunotherapy. 

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