{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T16:23:58Z","timestamp":1762100638823},"reference-count":34,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2005,11,17]],"date-time":"2005-11-17T00:00:00Z","timestamp":1132185600000},"content-version":"vor","delay-in-days":4825,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Resonance Imaging"],"published-print":{"date-parts":[[1992,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Hypothyroidism is known to affect nearly every organ and organ system of the human body. The goal of the present study was to gain insight into the phosphorus metabolism and bioenergetic function of striated (calf) muscle and liver in patients with hypothyroidism before and after thyroid hormone treatment. With an ISIS (image\u2010selected in vivo spectroscopy) magnetic resonance (MR) technique for volume selection, phosphorus\u201031 metabolism of the calf muscle in 10 patients and of the liver in seven patients with severe hypothyroidism was studied before and after treatment. In addition, spectra from the calf muscle and liver were obtained in 10 healthy volunteers. Relative to those from the healthy subjects, the P\u201031 MR spectra from patients with hypothyroidism showed a significantly diminished phosphocreatine\/inorganic phosphate ratio (P &lt; .01). After thyroid hormone substitution therapy, this ratio returned to normal values within several weeks. No statistically significant changes in the spectra of liver tissue could be detected. The results support the theory that hypothyroidism induces a hormone\u2010dependent, fully reversible impairment of the energy metabolism of striated muscle. Changes in liver metabolism observed with biochemical methods are apparently not detectable with state\u2010of\u2010the\u2010art P\u201031 MR spectroscopy.<\/jats:p>","DOI":"10.1002\/jmri.1880020510","type":"journal-article","created":{"date-parts":[[2007,3,6]],"date-time":"2007-03-06T02:22:47Z","timestamp":1173147767000},"page":"527-532","source":"Crossref","is-referenced-by-count":9,"title":["Effect of hypothyroidism on phosphorus metabolism in muscle and liver: In vivo P\u201031 MR spectroscopy study"],"prefix":"10.1002","volume":"2","author":[{"given":"Klaus D.","family":"Hagspiel","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Constantin","family":"Von 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