31P-spectroscopy of head and neck tumors--surface coil technique.
Comparative phosphorus-31 magnetic resonance spectroscopy (MRS) and magnetic resonance imaging (MRI) of 15 patients with superficial masses such as sarcoma, carcinoma, lymphoma, adenoma, and tuberculosis revealed significant increased concentrations of phosphomonoester, phosphodiester, and inorganic phosphorus in the lesion, whereas the concentration of the phosphocreatine was lower in comparison to muscle tissue. In nearly all masses, pH showed a slight alkaline shift. Existence of necrotic regions detected by MRI was marked by an increase of inorganic phosphorous in the spectra. Tumor growth was characterized by raised concentrations of phosphomonoester. Follow-up studies in a case of lymphoma showed a six-fold decrease of the tumor, while the spectra indicated a gradual transition of tumor values to muscle values. A follow-up study during irradiation of a squamous cell carcinoma revealed a considerable decrease of inorganic phosphate and a subsequent increase of phosphodiester.
Vogl
T
T
Department of Radiology, University of Munich.
Peer
F
F
Schedel
H
H
Reiman
V
V
Holtmann
S
S
Rennschmid
C
C
Sauter
R
R
Lissner
J
J
D000328:Adult; D000368:Aged; D003287:Contrast Media; D005260:Female; D005500:Follow-Up Studies; D019786:Gadolinium DTPA; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid; D010758:Phosphorus
D003287:Contrast Media; D009942:Organometallic Compounds; D010758:Phosphorus; D004369:Pentetic Acid; D019786:Gadolinium DTPA