Apport de l'imagerie par tomographie a emission de positons dans la pathologie pleurale. Interet de la TEP en pathologie pleurale.

in Revue des Maladies Respiratoires (2008), 25(2), 129-38

INTRODUCTION: Positron emission tomography (PET) has a clear role in oncology, particularly in thoracic disease. In the light of our experience and a revue of the literature we define precisely the role ... [more ▼]

INTRODUCTION: Positron emission tomography (PET) has a clear role in oncology, particularly in thoracic disease. In the light of our experience and a revue of the literature we define precisely the role of metabolic imaging in the diagnosis of pleural pathology. BACKGROUND: In particular PET allows characterisation of malignant pleural disease and provides prognostic information in mesothelioma. Metabolic imaging provides clinical information for the staging of pulmonary cancer, in the search for a primary tumour in metastatic pleurisy and also in the follow up of chronic or recurrent pleural pathology. CONCLUSIONS: It is justified, therefore, that PET joins the diagnostic armamentarium of pleural pathology, solid or liquid. [less ▲]

Highlights of the annual congress of the European Association of Nuclear Medicine, Copenhagen 2007.

in European Journal of Nuclear Medicine and Molecular Imaging (2008), 35(3), 655-72

INTRODUCTION: The Annual Congress of the European Association of Nuclear Medicine took place in Copenhagen on October 13-17, 2007. The event is the major scientific and professional effort in the field of ... [more ▼]

INTRODUCTION: The Annual Congress of the European Association of Nuclear Medicine took place in Copenhagen on October 13-17, 2007. The event is the major scientific and professional effort in the field of nuclear medicine in Europe. The most important developments in the fields of instrumentation, radionuclide production, radiochemistry, radiotherapy, as well as the clinical imaging fields of neurology, cardiology, oncology, and general sciences were reported. OBJECTIVE: This paper emphasizes the major findings and trends at this important gathering. This review is, however, only a brief summary of the large amount of data discussed. [less ▲]

Measuring the effect of amantadine in chronic anoxic minimally conscious state.

in Journal of Neurology, Neurosurgery & Psychiatry (2008), 79(2), 225-7

Indications cliniques de la radiotherapie metabolique dans les tymphomes.

in Revue Médicale Suisse (2008), 4(168), 1818-22

In their later stages low grade lymphoma are incurable. These lymphomas being radio-sensitive, a treatment of metabolic radioimmunotherapy, using monoclonal antibodies (anti-CD20) as the carrier has been ... [more ▼]

In their later stages low grade lymphoma are incurable. These lymphomas being radio-sensitive, a treatment of metabolic radioimmunotherapy, using monoclonal antibodies (anti-CD20) as the carrier has been developed. The aim of this treatment is to use these antibodies to target radiation to tumor tissues while limiting toxicity to normal cells. Ibritumomab tiuxetan (Zevalin) is currently prescribed for patients with relapsed or refractory low-grade follicular lymphoma after rituximab treatment. This outpatient treatment has a high level of overall response rate including complete response and that for a long period. The side effects are essentially hematological and reversible. In the near future many more indications should become apparent and Zevalin should become an important tool in the B-cell lymphoma (low and high grade). [less ▲]

Intrinsic brain activity in altered states of consciousness: how conscious is the default mode of brain function?

in Annals of the New York Academy of Sciences (2008), 1129

Spontaneous brain activity has recently received increasing interest in the neuroimaging community. However, the value of resting-state studies to a better understanding of brain-behavior relationships ... [more ▼]

Spontaneous brain activity has recently received increasing interest in the neuroimaging community. However, the value of resting-state studies to a better understanding of brain-behavior relationships has been challenged. That altered states of consciousness are a privileged way to study the relationships between spontaneous brain activity and behavior is proposed, and common resting-state brain activity features observed in various states of altered consciousness are reviewed. Early positron emission tomography studies showed that states of extremely low or high brain activity are often associated with unconsciousness. However, this relationship is not absolute, and the precise link between global brain metabolism and awareness remains yet difficult to assert. In contrast, voxel-based analyses identified a systematic impairment of associative frontoparieto-cingulate areas in altered states of consciousness, such as sleep, anesthesia, coma, vegetative state, epileptic loss of consciousness, and somnambulism. In parallel, recent functional magnetic resonance imaging studies have identified structured patterns of slow neuronal oscillations in the resting human brain. Similar coherent blood oxygen level-dependent (BOLD) systemwide patterns can also be found, in particular in the default-mode network, in several states of unconsciousness, such as coma, anesthesia, and slow-wave sleep. The latter results suggest that slow coherent spontaneous BOLD fluctuations cannot be exclusively a reflection of conscious mental activity, but may reflect default brain connectivity shaping brain areas of most likely interactions in a way that transcends levels of consciousness, and whose functional significance remains largely in the dark. [less ▲]

Repérage scintigraphique préopératoire d'une métastase costale unique d'un adénocarcinome prostatique opéré.

in Progrès en Urologie (2008), 18(6), 402-5

We present a case of a lonely bone lesion after a prostatic adenocarcinoma with recurrent increased PSA. The localization of the metastasis at the level of a rib is infrequent. The precise localization of ... [more ▼]

We present a case of a lonely bone lesion after a prostatic adenocarcinoma with recurrent increased PSA. The localization of the metastasis at the level of a rib is infrequent. The precise localization of the lesion was made possible by intraoperative scintigraphy. Histology confirmed the complete resection of the lesion with safe margins. [less ▲]

Noninvasive assessment of Crohn's disease intestinal lesions with F-18-FDG PET/CT

in Journal of Nuclear Medicine (2007), 48(7), 1053-1059

Pilot studies have shown good sensitivity and specificity for F-18-FDG PET in detecting gastrointestinal lesions of Crohn's disease. The combination of F-18-FDG PET with CT may further improve the ... [more ▼]

Pilot studies have shown good sensitivity and specificity for F-18-FDG PET in detecting gastrointestinal lesions of Crohn's disease. The combination of F-18-FDG PET with CT may further improve the localization and characterization of lesions with increased F-18-FDG uptake. Our aim was to assess the use of F-18-FDG PET/CT in evaluating the activity and location of Crohn's disease along the gastrointestinal tract. Methods: After giving informed consent, 22 patients with Crohn's disease were prospectively studied. They underwent F-18-FDG PET/CT, followed by ileocolonoscopy within 1 wk (mean, 2 d). The Crohn's disease activity index (CDAI) was calculated, and serum C-reactive protein (CRP) and fecal calprotectin were measured before endoscopy. The Crohn's disease endoscopy index of severity (CDEIS) was calculated during endoscopy. The global CDEIS score and endoscopic subscores for various ileocolonic segments were used for analysis. Results: Globally, 95 intestinal and colonic segments in 22 patients were analyzed. F-18-FDG PET/CT detected 35 of 48 endoscopically affected segments (sensitivity for the detection of endoscopic lesions, 72.9%). The sensitivity of F-18-FDG PET/CT for the detection of severe endoscopic lesions (deep ulcers and strictures) was 100% (14/14). The global PET/CT score significantly correlated with CDEIS (r = 0.51; 95% confidence interval [Cl], 0.09-0.77; P = 0.017), CDAI (r = 0.58; 95% Cl, 0.17-0.80; P = 0.005), and CRP (r = 0.56; 95% Cl, 0.19-0.81; P = 0.007). Conclusion: F-18-FDG PET/CT was globally well correlated to the clinical, endoscopic, and biologic activity of Crohn's disease. Above all, this technique had a good sensitivity for the detection of intestinal and colonic segments with moderate to severe mucosal lesions. The potential impact of this promising tool on the global management of patients with Crohn's disease should be further evaluated in prospective studies. [less ▲]

Effect of dementia severity and age on posterior cingulate cortex metabolism in Alzheimer's disease

in Journal of Neurology (2007, May), 254(Suppl. 3), 146

Le mélanome cutané dans une perspective liégeoise. Actualisation de son épidémiologie et avancées diagnostiques.

in Revue Médicale de Liège (2007), 62(Supplément), 52-55

Cutaneous melanoma is one of the research poles at the University Hospital of Liège. Since 20 years or so, the dermatopathology laboratory with the contribution of the Mosan Study Group of Pigmented ... [more ▼]

Cutaneous melanoma is one of the research poles at the University Hospital of Liège. Since 20 years or so, the dermatopathology laboratory with the contribution of the Mosan Study Group of Pigmented Neoplasms have scrutenised the epidemiological evolution of this cancer. We have disclosed a sharp increase in the global incidence of melanoma, more particularly in women in the age of procreation. We have also contributed and innovated in terms of clinical diagnosis by introducing dermoscopy and initiating both the ULEV method and the cyanoacrylate skin surface stripping. In the field of dermatopathology we have developed an immunohistological panel allowing to fine tune the diagnosis and to define some histoprognostic criteria. For the checkup of the disease extension, the PET scan method has been particularly refined. [less ▲]

Tomographie a emission de positons: un premier bilan.

in Revue du Praticien (La) (2007), 57(17), 1864-70

Positron emission tomography (PET) has been widely used for several years for staging and response evaluation in oncology. It is time to critically review its role in routine patient care. [18F]-labelled ... [more ▼]

Positron emission tomography (PET) has been widely used for several years for staging and response evaluation in oncology. It is time to critically review its role in routine patient care. [18F]-labelled fluorodeoxyglucose ([18F]-FDG) remains the radiotracer of choice in most indications. Its high sensitivity, the half-life of 110 minutes and the easy production of this radiotracer explain its routine use although the specificity is not very good. Infectious or inflammatory processes can mimic tumours. Appropriate selection of patients studied in the recommended indications and interpretation of images by an experienced team having access to both clinical information and other diagnostic studies allows reducing the risk of false positives. Although PET is highly accurate, not all patients suffering from cancer need a PET study. Major improvements were also observed with conventional imaging techniques over the past 10 years. It is important to avoid long waiting lists because otherwise treatment delay may counterbalance the benefit of PET studies. [less ▲]