title: Differentiation between chondroma and squamous cell carcinoma: evaluation of subtraction image of MRI.
abstract: The image processing procedure has become widely applied as a visual aid in imaging diagnosis. The subtraction image of MRI obtained by digitally subtracting an unenhanced image from a contrast-enhanced image, depicted a discrete distribution of the contrast agent. Subtraction images in the clinical cases were compared. The subtraction image in a case of chondroma demonstrated a relatively uniform distribution of a contrast agent, with a well delineated neoplastic lesion. The subtraction image in a case of squamous cell carcinoma, the contrast agent was distributed heterogeneously in the carcinoma and well permeated into the muscle. Different patterns of subtraction image were obtained in the clinical cases of chondroma and squamous cell carcinoma in this study. The findings suggest the potential usefulness of the subtraction image for diagnosing the degree of malignancy.
authors.affiliation: Department of Veterinary Clinical Radiology, Obihiro University of Agriculture and Veterinary Medicine, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yamada
authors.forename: K
authors.initials: K
authors.lastname: Miyahara
authors.forename: M
authors.initials: M
authors.lastname: Sato
authors.forename: H
authors.initials: H
authors.lastname: Furuoka
authors.forename: M
authors.initials: M
authors.lastname: Nakagawa
authors.forename: S
authors.initials: S
authors.lastname: Shigeno
authors.forename: T
authors.initials: T
authors.lastname: Hirose
mesh_terms: D000818:Animals; D001859:Bone Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D002812:Chondroma / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D003287:Contrast Media; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000175:diagnosis* / Q000473:pathology; D004285:Dogs; D005682:Gadolinium; D019786:Gadolinium DTPA; D006571:Heterocyclic Compounds; D008279:Magnetic Resonance Imaging / Q000662:veterinary; D009942:Organometallic Compounds; D013382:Subtraction Technique / Q000662:veterinary
chemical_list: D003287:Contrast Media; D006571:Heterocyclic Compounds; D009942:Organometallic Compounds; C062402:gadoteridol; C064925:gadodiamide; D005682:Gadolinium; D019786:Gadolinium DTPA