Are Dual-Phase F-Fluorodeoxyglucose PET-mpMRI Diagnostic Performances to Distinguish Brain Tumour Radionecrosis/Recurrence after Cranial Radiotherapy Usable in Routine?

Brain metastases or primary brain tumours had poor prognosis until the use of high dose radiotherapy. However, radionecrosis is a complex challenge in the post-radiotherapy management of these patients due to the difficulty of distinguishing this complication from local tumour recurrence. MRI alone has a variable specificity and sensibility, as does PET-CT imaging.

Is Glucagon Administration Compatible With FDG PET/MRI?

Digestive peristalsis generates many artifacts that limit the abdominal and pelvic MRI interpretation. Apart from the hypoglycemia treatment in patients with diabetes, glucagon analog is also indicated for the digestive peristalsis reduction to reduce MRI artifacts. However, its use in PET/MRI is not described, given the risk of interaction with the metabolism of FDG.

Collective Modes in Excitonic Magnets: Dynamical Mean-Field Study.

We present a dynamical mean-field study of dynamical susceptibilities in the two-band Hubbard model. Varying the model parameters we analyze the two-particle excitations in the normal as well as in the ordered phase, an excitonic condensate. The two-particle dynamical mean-field theory spectra in the ordered phase reveal the gapless Goldstone modes arising from spontaneous breaking of continuous symmetries.

Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots.

In this work we study theoretically and experimentally the multi-particle structure of the so-called type-II quantum dots with spatially separated electrons and holes. Our calculations based on customarily developed full configuration interaction ap- proach reveal that exciton complexes containing holes interacting with two or more electrons exhibit fairly large antibinding energies. This effect is found to be the hallmark of the type-II confinement.

Spontaneous Spin Textures in Multiorbital Mott Systems.

Spin textures in k-space arising from spin-orbit coupling in noncentrosymmetric crystals find numerous applications in spintronics. We present a mechanism that leads to the appearance of k-space spin texture due to spontaneous symmetry breaking driven by electronic correlations. Using dynamical mean-field theory we show that doping a spin-triplet excitonic insulator provides a means of creating new thermodynamic phases with unique properties.

Clinical abnormalities of the nipple-areola complex: The role of imaging.

Clinical examination of the nipple is part of normal breast screening procedures. Abnormal processes of benign or malignant nature may be reflected by erythema, erosion, swelling or acquired inversion. In patients presenting with a persistent unilateral nipple lesion, it is advisable to collect a sample to exclude Paget's disease of the nipple, a rare form of ductal carcinoma in situ (DCIS).

[Paget's disease of the nipple and differential diagnosis].

Clinical evaluation of the nipple-areolar complex is a routine component of the breast screening examination. All persistent unilateral nipple lesion should be viewed with suspicion and Paget's disease of the nipple should be considered. The diagnosis is established by nipple scrape cytology.

[Lupus profundus and myelopathy].

Background: We report a case of myelopathy during the course of lupus profundus that is unique to our knowledge.

Case-report: A 29-year-old woman had lupus profundus since 1999, initially associated with thrombopenia (28,000 platelets/mm3) treated with corticosteroids for 6 months. Several nodular eruptions occurred from 1999 to 2004.

Primary malignant lymphoma of the urinary bladder: report of three cases and review of the literature.

We report three cases of a primary malignant lymphoma of the urinary bladder. The radiological features revealed a sessile mass of the lateral wall for one case, a circumferential thickening in the second, and two separated masses of the bladder wall in the last case. Primary malignant lymphoma of the urinary bladder is extremely rare.

[Assessment of the systematic preoperative insertion of an intra-aortic counterpulsation balloon in patients at high operative risk for coronary artery surgery].

The authors report their experience with pre-operative percutaneous balloon counterpulsation in 75 patients considered to be at high operative risk for coronary artery surgery, mainly because of unstable angina refractory to maximum medical therapy. The criteria to define high surgical risk are reported. The results and the vascular risk in relation to this technique are estimated.

[Slow-wave paradoxical sleep during the 1st year of life].

A typical aspect of the EEG during Paradoxical Sleep (PS) was noted in 76% of 68 infants, 3 to 11 months old. This consisted in delta waves of high amplitude recorded during PS. These waves were seen from the beginning to the end of the first year of life; they could occupy all or part of each stage of PS and were seen at any time during the night.

Delta, theta, alpha and beta power spectrum of sleep electroencephalogram in infants aged two to eleven months.

Automatic sleep EEG analysis was performed on infants from 2 to 11 months of age. Partial power spectra of delta, theta, alpha, and beta 1 bands were studied as function of sleep stages, age, and time of the night. beta 1, alpha, and delta power spectra are significantly lower in paradoxical sleep (PS) than in quiet sleep (QS) whatever the age; but theta is lower in PS than in QS only after 5 months of age.

[Realization of a system which permits automatic analysis of sleep of infants (2-12 months)].

We have developed a system which permits automatic analysis of sleep of infants from 2 to 12 months of age. It is based on the calculation of a score on the basis of 6 parameters weighted according to their importance in determining the different phases of sleep. We use 3 EEG parameters derived from spectral analysis of the Cz-Oz derivation: total spectral energy (Hjorth activity), energy of the delta band, and energy of the beta band, and 3 polygraphic parameters: variability of muscle activity in each minute, variability of the respiratory frequency and presence or absence of rapid eye movements.