Results:The experimental in vitro study showed that increased signal intensity was shown in case that the protein concentration in the fluid was increased(>1.64g/dl) and a tendency of gradual increase in signal intensity was also demonstrated in case of increasing the delay of TI. The differentiation between hepatic cyst and hemangioma could be made possible by FLAIR imaging with an optimal TI value(TI 1700ms,P<0.05).
Cranial MR and Flair imaging of the patients exhibited areas of increased T2W and flair signal symmetrically surrounding the aqueduct and third ventricle and within the medial thalamus.
Results Cranial MR and Flair imaging of the patients exhibited areas of increased T 2W and flair signals symmetrically surrounding the aqueduct and third ventricle and within the medial thalamus. One patient who became persistent vegetative state coexistenced increased T 2W and flair signal of the cortex.
Conclusion:Fast FLAIR MR imaging was preliminarily proved uesful in evaluating protein concentration in fluid and the capability of differentiating various liver diseases might be improved by FLAIR imaging with optimal parameters and in combination of the findings with SE sequence.
Results Among the patients with superacute stage of cerebral infarction,DWI and ADC figure presented as ischemia but T2WI and T2 FLIAR imaging presented as normality,with prolongation of infarction time,ADC value in the lesions showed the changed tendency from low to high.
Materials and Methods SE T 1WI, T 2WI and FLAIR MRI were performed in 17 patients with single lateral hippocampal sclerosis, and imaging findings were retrospectively analyzed.
Materials and Methods:35 patients with cerebral infarction were studied with conventional SE and rapid FLAIR sequences,for comparin the detectabilities of lesions.
Results The visualization of SAH on CT and MRI depended partly on the time after the ictus. In visualization of subacute and chronic SAH, FLAIR(94% detection) was significantly superior to T1WI(41%, P<0.01) and CT(27%, P<0.01).
Fluid-attenuated inversion recovery (FLAIR) imaging with prolonged inversion times allows generation of highly T2-weighted images of the brain with suppression of cerebrospinal fluid signal.
FLAIR imaging allowed identification of 45 % more high-signal lesions than T2-weighted or PD images in the 10 patients.
The aim of our study was to determine whether fluid-attenuated inversion recovery (FLAIR) imaging and diffusion-weighted imaging (DWI) would be helpful in characterizing primitive neuroectodermal tumors (PNET) from other pediatric brain tumors.
The differences in the histologic architecture between PNET and non-PNET are reflected in both FLAIR imaging and in DWI.
FLAIR imaging in the follow-up of low-grade gliomas: time to dispense with the dual-echo
Objective: To evaluate fast FLAIR pulse sequence in abdominal and pelvic applications.Materials and Methods:Thirty eight patients with fluid containing lesions in abdomen or pelvic cavity were imaged with fast FLAIR pulse sequence after routine T 1WI and T 2WI, using the following parameters: TR=5 000～6 000ms, TI=1 500～2 000ms, TE=90～120ms.Results:Of 38 patients, 27 underwent surgical treatment. The lesions were proved to be as the following diseases: huge hepatic cyst (n=7), hepatic abscess (n=3), subdiaphragmatic...
Objective: To evaluate fast FLAIR pulse sequence in abdominal and pelvic applications.Materials and Methods:Thirty eight patients with fluid containing lesions in abdomen or pelvic cavity were imaged with fast FLAIR pulse sequence after routine T 1WI and T 2WI, using the following parameters: TR=5 000～6 000ms, TI=1 500～2 000ms, TE=90～120ms.Results:Of 38 patients, 27 underwent surgical treatment. The lesions were proved to be as the following diseases: huge hepatic cyst (n=7), hepatic abscess (n=3), subdiaphragmatic abscess (n=2), old hemorrhagic cyst of pancreatic head (n=1), large renal cyst (n=3), nephrohydrosis (n=2), huge ovarian simple cyst (n=5), cystadenocarcinoma of ovary (n=1), parovarian cyst (n=1), early embryo (n=1) and malignant mole (n=1). On FLAIR images, hepatic and subdiaphragmatic abscess, old hemorrhage of pancreatic head and malignant mole presented as hyperintensity lesion, while nephrohydrosis, ovarian simple cyst and early embryo had a signal intensity as low as that of CSF or urine. Renal cyst and ovarian cystadenocarcinoma were isointensity. Signal of hepatic cysts varied from low intensity to slightly hyperintensity.Conclusion: Fast FLAIR pulse sequence is helpful in making differential diagnosis of fluid containing lesion in abdominal or pelvic cavity.
Objective To study the role of turbo fluid attenuated inversion recovery (FLAIR) pulse sequence MR imaging in diagnosing subacute and chronic subarachnoid hemorrhage (SAH). Methods The turbo FLAIR images of 30 healthy brains and 17 patients with SAH 4-35 days after the ictus were obtained at T5NT 0.5 T superconductivity MR scanner. The findings of subacute and chronic SAH on FLAIR images were compared with the findings on conventional spinecho MRI and CT images, then, a blind study of the fortysix FLAIR images...
Objective To study the role of turbo fluid attenuated inversion recovery (FLAIR) pulse sequence MR imaging in diagnosing subacute and chronic subarachnoid hemorrhage (SAH). Methods The turbo FLAIR images of 30 healthy brains and 17 patients with SAH 4-35 days after the ictus were obtained at T5NT 0.5 T superconductivity MR scanner. The findings of subacute and chronic SAH on FLAIR images were compared with the findings on conventional spinecho MRI and CT images, then, a blind study of the fortysix FLAIR images was performed to verify the reliability of the comparative evaluation. Results The visualization of SAH on CT and MRI depended partly on the time after the ictus. In visualization of subacute and chronic SAH, FLAIR(94% detection) was significantly superior to T1WI(41%, P<0.01) and CT(27%, P<0.01). FLAIR detected all the subacute SAH(100%), whereas T1WI and CT detected 42%(P<0.01) and 33%(P<0.01), respectively. In a blind comparative study, no falsepositive or falsenegative identification was made. Conclusions Turbo FLAIR MR imaging is a reliable technology to visualize and confirm the subacute and chronic SAH, it is superior to conventional MRI or CT and should be used as a routine method in diagnosing the disease.
126 patients with intracranial tumors were examined with fast fluid-attenuated inversion-recovery (FLAIR) and routine MR imaging including fast spin-echo T2WI and T2WI simultaneously. The value of FLAIR in the diagnosis of intracranial tumors were investigated by comparising with SE T2WI. The contrast between lesions and the background was revealed better on the FLAIR images than that on T2WI. So did the detectabilities of the location, size, contour, extent and numbers of the lesions. We concluded that fast...
126 patients with intracranial tumors were examined with fast fluid-attenuated inversion-recovery (FLAIR) and routine MR imaging including fast spin-echo T2WI and T2WI simultaneously. The value of FLAIR in the diagnosis of intracranial tumors were investigated by comparising with SE T2WI. The contrast between lesions and the background was revealed better on the FLAIR images than that on T2WI. So did the detectabilities of the location, size, contour, extent and numbers of the lesions. We concluded that fast FLAIR pulse sequence should be listed on the routine MR imaging as a complementing modality of FSE T2WI.
flair成像
flair imaging
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