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US5322682.Pdf ||||||||||||| US005322682A United States Patent (19) 11 Patent Number: 5,322,682 Bartzokis et al. (45) Date of Patent: Jun. 21, 1994 54 METHOD FOR QUANTITATIVELY "Dashed Hopes for MRImaging of the Head and Neck MEASURING AND MAPPING STORED . ." Editorials from the Neuroradiology Section, RON IN TSSUE USING MRI Dept. of Radiology, Hospital of the University of Penn (75) Inventors: George Bartzokis; Carolanne K. sylvania, Radiology 1991; 184:25-26. Phelan, both of Los Angeles, Calif. "T-Relaxometry-A Critical Investigation . ," Thomas Tolxdorff et al., SMRM 1988, p. 33. 73 Assignee: The Regents of the University of "T2 Values in the Human Brain: Comparison with California, Oakland, Calif. Quantitative Assays of Iron and Ferritinl' Julian C. (21) Appl. No.: 926,245 Chen, M.D. et al. Radiology 1989, pp. 521-526. "Field Strength in Neuro-MRImaging: A Comparison 22 Filed: Aug. 6, 1992 of 0.5T and 1.5T' Clifford R. Jack, Jr., et al., Journal of 51) Int. Cl...................... G01N 24/08; A61K 33/26; Computer Assisted Tomography, vol. 14, No. 4, 1990, GO1V 3/00 pp. 505-513. 52 U.S. C. ..................................... 424/9; 128/653.2; (List continued on next page.) 128/653.4; 436/173; 324/300; 324/307; 324/308; 424/646 Primary Examiner-Glennon H. Hollrah 58) Field of Search ................. 424/9, 646; 128/653.2, Assistant Examiner-Gary E. Hollinden 128/653.4, 654; 436/173; 324/300, 307, 308 Attorney, Agent, or Firm-Daniel L. Dawes (56) References Cited U.S. PATENT DOCUMENTS (57) ABSTRACT 4,477,777 10/1984 Gordon ............................... 324/300 The invention provides a specific measure of iron stores 4,735,796 4/1988 Gordon ................................... 424/9 in vivo using magnetic resonance imaging. T2 relaxation 4,789,830 12/1988 Stokar ............... 4,889,125 12/1989 Doddrell et al. ... 128/653 times in both lower-to-midfield strength magnetic reso 4,889,126 2/1989 Doddrell et al. ................... 128/653 nance imaging instruments and a higher field strength 4,984,574 1/1991 Goldberg et al. ..... ... 128/653.2 instrument is evaluated. T2 obtained at the higher field 5,072,732 12/1991 Rapoport et al................. 128/653.2 strength instrument is subtracted from T2 obtained at the lower field strength instrument. This difference, T, OTHER PUBLICATIONS is then correlated with a quantitative measure of the Narayan, P. et al. Magn. Res. in Med. 11:209-220 iron stores in vivo in the scanned tissue. A two-dimen (1989). sional or multidimensional map of the scanned tissue is Neurohr, K J et al. Adv. Myocardiol. 6:158-193 (1985). then constructed on the basis of T to visually identify Evelihoch, J L Invest. New Drugs 7:5-12 (1989). different tissue types as being normal or abnormal, ei “Role of Iron and Ferritin in MRImaging of the Brain: ther through a visual determination based on gray scales ...," Bizzi et al., Radiology 1990; 177:59-65. or a numeric comparison based on quantitative measure. "4-tesla sites initiate clinical MR studies,' by Lori D' The introduction of artificial or nonbiological sub Agincourt, Product Development pp. 81-83, 87 & 104, stances as opposed to natural ferritin, is permitted for Diagnostic Imaging Dec. 1991. further diagnostic use by application of this methodol "Magnetic Resonance Imaging and Brain Iron . .' ogy. Burton P. Drayer, M.D., BNI Quarterly, vol. 3 No. 4, Fall 1987, pp. 15-30. "MRI in basal ganglia diseases," D. Wimberger et al., J. Neural Transm (1991) suppl) 133-140 (R) by Sprin ger-Verlag 1991. 27 Claims, 3 Drawing Sheets s 10 20 IRON, FERRITIN AND APOFERRITA CowdewTATIONS (sEETEX7) FIED STREAW.67Ay: 157 st AERRITAV km am moup IROAW o APOAEAA/w A. A. A MEANAGAASE offwo NDPENDENTGEZ. MEasures at FELD DEPENDEWT 7-shorewag (Pors) dEFAED as the differewice wrie Eaws of Calculated 2 alives ostalwead saw G The Two Afield STEANGTH twistfumeAvas. 5,322,682 Page 2 OTHER PUBLICATIONS "Hepatic. Iron Overload: Quantitive MR Imaging” "Nuclear Relaxation of Human Brain Gray and White John M. Gomori et al., Radiology 1991;179;367-369. Matter: Analysis of Field Dependence and Implications "The Role of Ferritin and Hemosiderin in the MRAp for MRI” Helmut W. Fisher et al., Magnetic Resonance pearance of Cerebral Hemorrhage: A Histopathologic in Medicine 16, 317-334 (1990). Biochemical Study in Rats' Keith R. Thulborn et al., AJNR 11:291-297, Mar/Apr. 1990; AJR 154:May "Are Hepatic and Muscle T2 Values Different at 0.5 and 1990. 1.5 Tesla?" Magnetic Resonance Imaging, vol. 7, pp. "Diffusion-Weighted MR Imaging of Acute Stroke: 363-367, 1989, Michael E. Bernardino et al. Correlation with T2-Weighted and Magnetic Suscep "Biological Significance of Iron-Related Magnetic Res tibility-Enhanced MRImaging in Cats' M. E. Moseley onance Imaging Changes in the Brain' Arch Neurol et al., AJNR 11:423-429, May/Jun. 1990. vol. 49, Jul. 1992, Jesus Pujol, M.D. et al. "Late Onset Familial Hallervorden-Spatz Disease: MR "Transverse Relaxation of Solvent Protons Induced by Findings in Two Sisters' Paolo Ambrosetto, et al., Mangetized Spheres: Application to Ferritin, Erythro AJNR 13:394-396, Jan/Feb 1992 1095-6108/92/13 cytes, and Magnetite" Pierre Gillis et al. Magnetic Res 01-0394 CAmerican Society of Neuroradiology. onance in Medicine 5, 323-345 (1987). "MR Imaging of Parkinson Disease with Spin-Echo "MR Imaging of Intracerebral Blood: Diversity in the and Gradient-Echo Sequences' Bruce H. Braffman 1.2, Temporal Pattern at 0.51.0T'Aimer Zyed et al., AJNR AJR 152:159-165, Jan. 1989. 12:469-474, May/Jun. 1991;AJR 157:133-138 Jul. 1991. "Brain Iron in Patients with Parkinson Disease: MR "NMR Relaxation Times of Blood: Dependence on Visualization Using Gradient Modification" Joseph F. Field Strength, Oxidation State, and Cell Integrity' Norfray et al., AJNR 9:237-240, Mar/Apr. 1988. John M. Gomoriet al., J. Comput Assit Tomogr, vol. 11, "Study of Movement Disorders and Brain Iron by MR' No. 4 1987, pp. 684-690. J. Neal Rutledge1.2 et al., AJNR 8:397-411, May/Jun. "Does signal-attenuation on high-field T2-weighted 1987. MRI of the brain reflect regional cerebral iron deposi "Magnetic Resonance Imaging in Huntington Disease' tion? Observations on the relationship between regional J. Thayer Simmons et al., AJNR 7:25-28, Jan./Feb. cerebral water proton T2 values and iron levels' D. J. 1986, Brooks et al., Journal of Neurology, Neurosurgery, and "Mechanisms of MR Signal Alteration by Acute Intra Psychiatry 1989; 52:108-111. cerebral Blood: Old Concepts New Theories' L. Anne "Notes On the Origin of Paramagnetic Inhomogeneity Hayman et al., AJNR 12:899-907, Sep./Oct. 1991. Effects in Whole Blood' N. A. Watwiyoff et al., Mag "Detection of Acute Intracerebral Hemorrhage on MR netic Resonance in Medicine 20, 144-150 (1991). Imaging; Ineffectiveness of Prolonged Interecho Inter "T2 Estimates in Healthy and Diseased Brain Tissue: A val Pulse Sequences" Weingarten et al., AJNR Comparison Using Various MR Pulse Sequences' 12:475-479, May/Jun. 1991. Robert H. Darwin et al., Radiology 1986; 160:375-381. "Clinically Documented Hemorrhage in Cerebral Arte "Reproducibility of Relaxation and Spin-Density Pa riovenous Malfunctions: MR Characteristics' Phylliss rameters in Phantoms and the Human Brain Measured M. Chappell et al., Radiology 1992; 183:719-724. by MRImaging at 1.5T" Robert K. Breger et al., Mag "Parkinson Plus Syndrome: Diagnosis Using High netic Resonance in Medicine 3, 649-662 (1986). Field MRImaging of Brain Iron' Burton P. Drayer et "In-vivo Measurements of MRI Tissue Parameters at al., Radiology 1986; 159:493-498. Various Magnetic Field Strengths' By Jyh-Horng "Imaging of the Aging Brain Part II. Pathologic Condi Chen, Dissertation, Univ. of Calif. Berkeley with San tions' Burton P. Drayer, MD, Radiology 1988; Francisco (1991). 166:797-806. “MR Imaging of Cerebral Hematomas at Different "Imaging of the Aging Brain Part I. Normal Findings” Field Strengths: Theory and Applications' Rodney A. Burton P. Drayer, MD, Radiology 1988; 166:785-796. Brooks et al., J. Cpmput Assist Tomogr vol. 13 No. 2 1989 pp. 194-206. (List continued on next page.) 5,322,682 Page 3 OTHER PUBLICATIONS "MR Imaging of Cerebral Hematomas at Different "Wilson Disease of the Brain: MRImaging" Alex M. Field Strengths: Theory and Applications' Rodney A. Aisen et al., Radiology 1985; 157:137-141. Brooks et al., J. Comput Assist Tomogr 13(2):194-206 "Multiple System Atrophy (Shy-Drager Syndrome): 1989. MRImaging" Behram Pastakia et al., Radiology 1986; "Magnetic resonance imaging of stationary blood: A 159:499-502. review" Rodney A. Brooks et al., Med. Phys. 14(6), cMangetic Resonance Imaging of Transfusional Hemo Nov./Dec. 1987 pp. 903-913. siderosis Complicating Thalassemia Major" Robert C. "Striatonigral degeneration: Clinical, MRI, and patho Brasch et al., Radiology 1984; 150:767-771. logic correlation' Christopher O'Brien et al., Neurol "Intracranial Hematomas: Imaging by High-Field ogy 1990; 40:710-711 (1990). MR" John M. Comori, et al., Radiology 1985; "Magnetic resonance imaging in pathologically proven 157:87-93. Hallervorden-Spatz disease' Schaffert et al., Neurol "Magnetic Resonance Imaging of the Midbrain in Par ogy 39 Mar. 1989 pp. 440-442. kinson's Disease” J. R. Duguid et al., Annals of Neurol "NMR Imaging of the Liver in Two Cases of Iron ogy vol. 20 No. 6 Dec. 1986, pp. 744-747. Overload' Leung et al., J. Comput Asst Tomogr "Nuclear Magnetic Resonance Imaging in Movement 8(3):446-449 Jun. 1984. Disorders' Steven A. Lukes, et al, Annals of Neurology "Magnetic Resonance Imaging and Spectroscopy of vol. 13 No. 6 Jun. 1983 pp. 690-691. Hepatic Iron Overload' Stark et al., Radiology 1985; "High-Field MR Imaging of Superficial Siderosis of 154: 137-142.
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