False-positive spectra in an immature (36-week gestation) neonate at 2-day postnatal age. False-positive spectra in an immature (36-week gestation) neonate.

Slides:

Advertisements

Similar presentations

Color pressure maps (mm Hg) in a healthy subject in the axial (A) and coronal (D) planes as well as for a patient (C and F) with a type IIa DAVF affecting.

Advertisements

Lateral skull radiograph performed in our patient at age 4 years shows cystoperitoneal shunt connected to a VP shunt via a Y connector (dashed arrow, reservoir.

Demonstration of the creation of a patient-specific brain mold for minimizing tissue distortion during fixation. Demonstration of the creation of a patient-specific.

A 50-year-old man with MD. Axial thin-section CT image shows decreased distance between the vertical limb of the posterior semicircular canal and the posterior.

A and B, Sagittal (A) and axial (B) fast spin-echo images of the cervical spine before treatment demonstrate diffuse increase in signal intensity (arrows)

Axial MR images in a 51-year-old woman with parkinsonism.

Slice no. 5. Slice no. 5. T2-weighted coronal image (20/9.2/12) at the level of the temporal horns (33 weeks' gestation). Large arrow, cingulate sulcus;

A 61-year-old man with brain metastases from primary lung cancer.

Case 19: 14-month-old boy with bilateral frontal and sylvian polymicrogyria. Case 19: 14-month-old boy with bilateral frontal and sylvian polymicrogyria.

A, Measurement of the angle between the TS-OP line and the hard palate in the lateral scout view of the brain CT (black arrow). A, Measurement of the angle.

A–C, Case 5. A–C, Case 5. Axial CT images at 1 month after birth show bilateral frontal and parietal calcifications (arrows). D–F, These calcifications.

Patient 2: CNS vasculitis in a 37-year-old woman with systemic lupus erythematosus. Patient 2: CNS vasculitis in a 37-year-old woman with systemic lupus.

Serial axial T2-weighted images (2000/110/2 at treatment, 3400/100/4 at 6 months and 4000/100/3 at 10 months and 36 months after treatment) in a 52-year-old.

A, 22-week old fetus with several nodular areas of low signal intensity along the margin of the left lateral ventricle (arrows) on axial SS-FSE T2-weighted.

A side-by-side comparison of EPVS in a cognitively healthy control versus a patient with aMCI A, A coronal MR brain image of a cognitively healthy control.

Patient 14. Patient 14. Secondary progressive MS. Axial contrast-enhanced T1-weighted MR image (600/27/1 [TR/TE/excitation]). A, No enhanced lesion can.

42-year-old male patient with follow-up neck CT for lymphoma at 70 kVp (A) and corresponding previous CT at 120 kVp (B). 42-year-old male patient with.

CT perfusion maps of MTT

A 45-year-old woman with a history of alcohol abuse had changes in consciousness and ocular abnormalities.A, No signal intensity alterations are seen on.

T2-weighted images of a patient with an infarction within the anterior MCA branch territory on day 5 (patient 15) show high SI changes within the ipsilateral.

VBM results for differences in WM volume between patients with POAG and disease-free control subjects. VBM results for differences in WM volume between.

Same patient as shown in figure 3.

Bar graph of the number of averaged activated voxels (normalized to control values), as defined by increases in lactate concentration in the left frontal.

A, In a patient with a history of breast cancer surgery and radiation treatment with right-arm weakness, axial T2WI shows diffuse thickening of the right.

Axial MR image (TR/TE, 10,002/142) obtained when the patient was aged 5 days shows extensive areas of abnormal signal intensity, which suggest edema involving.

Axial MR image (10,002/142) obtained when the patient was aged 12 days demonstrates ventricular size and sulcal prominence have increased since the study.

Term-born infant with a small dimple at the back and without neurologic symptoms. Term-born infant with a small dimple at the back and without neurologic.

A–I, Matching T1-weighted, T2-weighted, and FLAIR images from three patients ages 5 weeks (A–C), 8 months (D–F), and 3 years (G–I). A–I, Matching T1-weighted,

Involvement of the frontal and parietal lobes in patients with isolated cortical hyperintensities. Involvement of the frontal and parietal lobes in patients.

A 64-year-old man with oculomotor nerve palsy from a partially thrombosed giant cavernous sinus aneurysm. A 64-year-old man with oculomotor nerve palsy.

Axial T2-weighted MR imaging at the level of the internal auditory canals, demonstrating a large, homogeneous mass filling the right internal auditory.

Ill-defined margins as a sign of malignancy.

Cystic changes within the endplates adjacent to the implants.

A, Axial SS-FSE T2-weighted image of a 23-gestational-week-old fetus in a monochorionic twin pregnancy complicated by co-twin demise. A, Axial SS-FSE T2-weighted.

Case 21: 7-year-old girl with bilateral perisylvian, lateral parietal, and parieto-occipital polymicrogyria. Case 21: 7-year-old girl with bilateral perisylvian,

A, Sagittal SS-FSE T2-weighted image in a 25-gestational-week-old fetus demonstrates agenesis of the corpus callosum as well as a small pons.B, Axial SS-FSE.

An infant born at a gestational age of 40+4 weeks with cesarean delivery for fetal distress who had an Apgar score of 0–4–5. An infant born at a gestational.

Representative multislice MIP projections of EPVS in the subcortical brain structures and the basal ganglia of a control and a subject with aMCI. Representative.

A 7-day old neonate, the older sister of patient 1, also presented with neonatal encephalopathy.Axial fast spin-echo T2-weighted image (130/4200/1[TE/TR/NEX])

Posterior fossa SDH in a neonate delivered via SVD

MR spectrum of a normal frontal lobe obtained at 1

A–C, Sagittal T1-weighted (A), sagittal T2-weighted (B), and axial T2-weighted (C) MR images of the cervical spine in a patient with severe myelopathy.

Differentiation of common pediatric brain tumors by quantitative 1H-MR spectroscopy. Differentiation of common pediatric brain tumors by quantitative 1H-MR.

A 47-year-old woman with a history of alcohol abuse presented with ataxia, changes in consciousness, and ocular abnormalities. A 47-year-old woman with.

Hyperperfused stroke territory on ASL

Ultrasonography (A–C) and MR imaging (D and E) (time interval, 7 days) from an infant with NKHG.A–C, Sagittal views showing (A) a hypoplastic corpus callosum.

Bone algorithm CT images from the same case, demonstrating focal enlargement of the right tympanic segment, in the axial (left) and coronal (right) planes.

Sagittal T1-weighted MR image of the pituitary gland in a term neonate (born at gestational week 38) obtained near term (corrected age of 39 weeks; 7 days.

Sagittal T1-weighted MR image of the pituitary gland in a preterm neonate (born at gestational week 28) obtained near term (corrected age of 39 weeks;

Orbital lymphoma (A–C) compared with OIS (D–F).

MR images of the brain (axial sections, fluid-attenuated reversion recovery sequences) show the symmetric hyperintensities (arrows) involving the pyramidal.

Fourth ventricular CSF pulsation artifact in four subjects.

Case 2. Case 2. Selected proton MR spectra (PRESS, 1500/136/1; nominal voxel size, 2 cm3) from the voxels indicated on the scout spin-echo T2-weighted.

Axial T2-weighted image (A) demonstrates focal cortical dysplasia (arrow) centered in the left anterior temporal lobe in a right-handed patient. Axial.

Spatial orientation of the thalami.

A, Axial T2-weighted image (3500/90/2) shows a well-defined deep right occipital white matter lesion (asterisk) and a subcortical linear hyperintensity.

Representative quantitative maps of a patient with brain metastasis.

Axial T2-weighted MR image shows normal flow void in the right internal jugular vein (arrows), whereas flow-related enhancement can be seen in the left.

Infant 2, an 11-month-old Cree girl with hypotonia and developmental regression. Infant 2, an 11-month-old Cree girl with hypotonia and developmental regression.

Pseudoaneurysms demonstrated by femoral arteriography and sonography.

Examples of types of AICA loops and eighth CN-AICA relationships.

Midline sagittal SS-FSE T2-weighted image demonstrates the normal appearance of the corpus callosum in a 26-gestational-week-old fetus (arrow). Midline.

Persistent diffusion abnormalities in the brain stem of patient 2.

A–C, Axial T2-weighted images 7 days after the ictus, demonstrating punctate hyperintensities throughout the white matter, on a background of slightly.

T1-weighted image (TR/TE, 550/14; signals acquired, 2; matrix, 205/256; section thickness, 5 mm; section gap, 0.5 mm; FOV, 16 cm) of a neonate from the.

Patient 16: gestational-week fetus.

Comprehensive imaging of a patient with recent stroke depicting left MCA stenosis. Comprehensive imaging of a patient with recent stroke depicting left.

In another infant with a left-sided BPL paralysis following birth trauma, there is only hyperintensity of the left BPL on the coronal STIR T2-weighted.

Axial CT at level of thyroid cartilage shown on soft tissue window (width, 340 HU; center, 43 HU) in panel A and narrow window (width, 1 HU; center, 130.

A–C, Single-voxel proton spectra from a normal-appearing cerebellar volume (A, patient 12), a normal-appearing parieto-occipital white matter volume (B,

Presentation transcript:

False-positive spectra in an immature (36-week gestation) neonate at 2-day postnatal age. False-positive spectra in an immature (36-week gestation) neonate at 2-day postnatal age. A, Spectrum from the voxel in the basal nuclei voxel shows a relatively low NAA level, suggesting immaturity of the brain. Minimal or no lactate peak is seen in this voxel.B, Spectrum from the less mature watershed voxel shows a very low NAA peak (open arrow) and a small- to moderate-sized lactate peak (solid arrow). This patient shows appropriate development at age 12 months, suggesting that the low NAA and high lactate are the result of immaturity, not injury.C, Axial SE (500/12) image shows an immature gyral pattern, confirming the immaturity of the infant's brain. A. James Barkovich et al. AJNR Am J Neuroradiol 1999;20:1399-1405 ©1999 by American Society of Neuroradiology