Detection of liver metastases from endocrine tumors: a prospective comparison of somatostatin receptor scintigraphy, computed tomography, and magnetic resonance imaging.

Purpose: To compare the respective sensitivity of somatostatin receptor scintigraphy (SRS), computed tomography (CT), and magnetic resonance imaging (MRI) in the detection of liver metastases from well-differentiated gastroenteropancreatic endocrine tumor (WDGEP ET) patients. To define predictive factors for "high-sensitivity SRS."

Patients And Methods: Sixty-four patients with WDGEP ET underwent SRS with abdominal single-photon emission computed tomography (SPECT), spiral CT, and 1.

Head and neck cancer patients with pulmonary nodules: value and role of CT-guided transthoracic needle aspiration biopsies.

Background: To evaluate transthoracic needle aspiration biopsies of pulmonary lesions in patients with squamous cell cancer of head and neck.

Methods: Retrospective series of 85 patients with squamous cell cancer of head and neck cancer and pulmonary nodules who underwent CT-guided needle aspiration biopsy.

Results: Diagnostic samples were obtained in 85% of patients.

Morphologic parameters of normal swallowing events using single-shot fast spin echo dynamic MRI.

This study was designed to determine visible and measurable morphological parameters in normal swallowing using dynamic MRI with single-shot fast spin echo (SSFSE), as a preliminary study in view of noninvasive MRI swallowing evaluation in patients with dysphagia. Seven healthy volunteers aged 24-40 underwent dynamic MRI with SSFSE, with a 1.5-T unit, using a head and neck antenna.

Effect of exercise intensity on the postexercise sweating threshold.

The hypothesis that the magnitude of the postexercise onset threshold for sweating is increased by the intensity of exercise was tested in eight subjects. Esophageal temperature was monitored as an index of core temperature while sweat rate was measured by using a ventilated capsule placed on the upper back. Subjects remained seated resting for 15 min (no exercise) or performed 15 min of treadmill running at either 55, 70, or 85% of peak oxygen consumption (V(o2 peak)) followed by a 20-min seated recovery.

Meta-analysis of the effect of structured exercise training on cardiorespiratory fitness in Type 2 diabetes mellitus.

Aims/hypothesis: Low cardiorespiratory fitness is a powerful and independent predictor of mortality in people with diabetes. Several studies have examined the effects of exercise on cardiorespiratory fitness in Type 2 diabetic individuals. However, these studies had relatively small sample sizes and highly variable results.

Computed tomographic features of peritoneal carcinomatosis treated by intraperitoneal chemohyperthermia.

Purpose: The purpose of this work was to describe the computed tomography (CT) features of peritoneal carcinomatosis after surgery combined with intraperitoneal chemohyperthermia (IPCH).

Method: Between 1999 and 2001, 51 consecutive patients (33 women and 18 men, with a mean age 45 years) were treated in our institution with IPCH for peritoneal carcinomatosis. Patients that were symptomatic (33 patients) underwent contrast enhanced helical CT of the abdomen and the pelvis during the first 15 postoperative days.

Cutaneous active vasodilation in humans during passive heating postexercise.

The hypothesis that exercise causes an increase in the postexercise esophageal temperature threshold for onset of cutaneous vasodilation through an alteration of active vasodilator activity was tested in nine subjects. Increases in forearm skin blood flow and arterial blood pressure were measured and used to calculate cutaneous vascular conductance at two superficial forearm sites: one with intact alpha-adrenergic vasoconstrictor activity (untreated) and one infused with bretylium tosylate (bretylium treated). Subjects remained seated resting for 15 min (no-exercise) or performed 15 min of treadmill running at either 55, 70, or 85% of peak oxygen consumption followed by 20 min of seated recovery.

[Swallowing study with kinetic MRI using a single shot fast spin echo sequence in healthy volunteers and patients treated for head and neck cancer].

Purpose: To evaluate the single shot fast spin echo sequence (SSFSE) rapid MRI sequence for swallowing study, to describe the swallowing phases analyzable by kinetic MR Imaging and to show the advantages and the limits of the method in patients treated for head and neck cancer.

Methods And Materials: A preliminary study was conducted in 8 healthy volunteers and 11 patients treated for a head and neck cancer between June 1999 and April 2001. Examinations were obtained on a 1.

MR imaging of hepatic metastases caused by neuroendocrine tumors: comparing four techniques.

Objective: The aim of our prospective study was to assess the MR imaging characteristics of hepatic metastases of neuroendocrine tumors and to determine the optimal MR sequence for their detection.

Subjects And Methods: Thirty-seven consecutive patients with liver metastases from neuroendocrine tumors underwent 1.5-T MR imaging of the liver comprising T2-weighted fast spin-echo with respiratory monitoring, breath-hold T2-weighted single-shot fast spin-echo, and T1-weighted gradient-recalled echo sequences before and after the injection of gadoterate dimeglumine.

[CT and MRI aspects of 28 patients with cerebral radiation necrosis irradiated for ORL tumors: correlation with the radiation technique].

Purpose: To describe and correlate with radiation therapy the occurrence of cerebral radiation necrosis in patients irradiated for nasopharyngeal or ethmoidal tumor. Materials and Methods. From 1986 to 1998, 1 201 patients, 981 with nasopharyngeal tumors, and 220 with ethmoidal tumors were treated by radiotherapy.

Lymph node metastases from head and neck squamous cell carcinoma: MR imaging with ultrasmall superparamagnetic iron oxide particles (Sinerem MR) -- results of a phase-III multicenter clinical trial.

The aim of this study was to compare the clinical usefulness of ultrasmall superparamagnetic iron oxide (USPIO) MR contrast media (Sinerem, Guerbet Laboratories, Aulnay-sous-Bois, France) with precontrast MRI in the diagnosis of metastatic lymph nodes in patients with head and neck squamous cell carcinoma, using histology as gold standard. Eighty-one previously untreated patients were enrolled in a multicenter phase-III clinical trial. All patients had a noncontrast MR, a Sinerem MR, and surgery within a period of 15 days.

Hepatic tumors treated with percutaneous radio-frequency ablation: CT and MR imaging follow-up.

Purpose: To describe the appearance of hepatic tumors treated with radio-frequency (RF) ablation on computed tomographic (CT) and magnetic resonance (MR) images and the pattern of residual tumor at the site of RF ablation and to assess prospectively the sensitivity, specificity, and positive and negative predictive CT and MR imaging values in the evaluation of RF treatment.

Materials And Methods: Thirty-one patients with 50 tumors (nine hepatocellular carcinomas and 41 metastases) treated with RF ablation underwent CT and MR imaging on the same day at 2, 4, and 6 months; CT was performed every 3 months thereafter. CT and MR findings were interpreted separately and prospectively by two reviewers with consensus.

[An integrated medical image network of patient records: experience of the Picture Archiving and Communication System (PACS) of the Gustave-Roussy Institute].

The PACS (Picture Archiving and Communication System) is a central radiologic image archiving system coupled with an information system which allows rapid access to these images. It permits rapid access of the entire file of radiologic images of a patient for radiologists and clinicians. After installation of an MRI and CT scan unit at the IGR, a PACS system was installed in July, 2000.

Effects of exercise on glycemic control and body mass in type 2 diabetes mellitus: a meta-analysis of controlled clinical trials.

Context: Exercise is widely perceived to be beneficial for glycemic control and weight loss in patients with type 2 diabetes. However, clinical trials on the effects of exercise in patients with type 2 diabetes have had small sample sizes and conflicting results.

Objective: To systematically review and quantify the effect of exercise on glycosylated hemoglobin (HbA(1c)) and body mass in patients with type 2 diabetes.

Synovial sarcomas of the head and neck: CT and MR imaging findings of eight patients.

Background And Purpose: Synovial sarcomas are soft-tissue tumors that rarely occur in the head and neck. The purpose of this study was to evaluate their CT and MR imaging appearance and to show that they may have a surprisingly benign imaging appearance.

Methods: Eight patients with histologically proved synovial sarcoma underwent CT; additionally, MR imaging examinations were performed in five of the eight cases.