Subtraction technique for contrast-enhanced MR images of musculoskeletal tumors.
Vascularized malignant tissue, fat and hemorrhage may have similar intensities on Gd-DTPA-enhanced, T1-weighted MRI performed to evaluate musculoskeletal tumors. We describe a simple, rapid post-processing subtraction technique which resulted in improved definition of these tissues in 33 of 42 examinations. While the subtraction process is susceptible to complex patient motion, the improved contrast can be obtained without modifying standard pulse sequences.
Hanna
S L
SL
Department of Diagnostic Imaging, St. Jude Children's Research Hospital 38101.
Langston
J W
JW
Gronemeyer
S A
SA
Fletcher
B D
BD
D001859:Bone Neoplasms / Q000000981:diagnostic imaging*; D002648:Child; D005069:Evaluation Studies as Topic; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging; D009135:Muscular Diseases / Q000000981:diagnostic imaging*; D009942:Organometallic Compounds; D004369:Pentetic Acid; D011856:Radiographic Image Enhancement / Q000379:methods*; D011877:Radionuclide Imaging; D012512:Sarcoma, Ewing / Q000000981:diagnostic imaging; D013382:Subtraction Technique
D009942:Organometallic Compounds; D004369:Pentetic Acid; D019786:Gadolinium DTPA