The Evaluation Of Brain Tumor After Stereotactic Radiotherapy By Magnetic Resonance Spectrospcopy Image

Objective: The change and significance following the discussion of Meningioma treated by Stereotactic Radiotherapy (STR).Methods: Collecting the MRI blip data after Meningioma STR from 2003-10 to 2007-5,total:349cases,The sterner sex: 223 cases(64%); the weaker sex 126 cases(36%),age from 7 to 78,average age 44.2, among these cases Hypophysoma 66 cases (19%),Meningioma 42 cases(12%),Pituitary tumor 45 cases(13%),Glioblastoma tumor 85 cases(24%), Hearing neuroma 28cases(8%),AVM,25cases(7%),Eraniopharyngioma13cases(3.7%), Ependyma tumor 14 cases (4%),Conarium tumor 17 cases 17 (4.9%),Germ cell tumor 14 cases (4%).Among these cases carcinoid 206 cases, adopt cubage compartition cure method or big dosage once or two, the dosage of tumor circumjacent is 18-25 Gy;malignancy 118 cases, STR thrice to decadal additional full brain curing, the dosage of tumor circumjacent is 18-35 Gy;Irradiated full brain 30-40 Gy/every 4-4.5 week, all cases adopted boot up scan checking by 1.5T MR scanner.Result: After radiated curing to the group of these tumor, by MRI observing , there are great differences of these tumor size. Within six months, after radiate curing ,Hearing neuroma,Meningioma,Pituitary tumor and so on, a majority of these tumor size keep stabilization; upwards six months, begin reduce distinctness or gently.Within six months, after radiate curing, some metastatic tumor and glioblastoma tumor effect preferably, the size reduce distinctness or gently; upwards six months, the size augment distinctness or begin transfer.After radiate curing metastatic tumor and glioblastoma tumor have no distinctness reduce, but some littleaccretion. Germ cell tumor is sensitivity to radiate, it can disappeared complete or reduced distinctness.The discussion of MRI above indicate ,the tumor of different character different polarization have different sensitivity to radiation.Hence, imaging iatrology transformation can help clinic physician to deduce the character of tumor, so that the Rx so is decided and it also can assist clinic cure.Conclusion: after magnetic resonance spectrospcopy cure ,the brain tumor image have clear difference ,tumor signal,focus size and tumor border will have series of biology changing.Because the long domino effect of Y radial and the activity characteristic of glioblastoma tumor ,after curing the size of the focus have no disciplinary change.But the image change and pathology change have more sonsistency.According to the change of image ,we can estimate the biology change of tumor, so that, image iatrology change can use as the impersonality guide of STR,grading analysis validity, it can reflect curative effect dynamic, can reflect the change character nicety and impersonality, it can confirm the character of brain tumor for clinic ,it also confirm that the STR whether availability to brain tumor or provided gist for other cure.Author point is that magnetic resonance sprctrospcopy image grading sorting analysis the availability can reflect curative effect.After X cure , periodic and classify visit of image iatrology is necessary.