Which dose for what image? Iterative reconstruction for CT scan.

Purpose: To evaluate the potential of iterative reconstruction for reducing the dose given to the patient during abdominal CT scanning.

Materials And Methods: A double abdominal CT scan acquisition (Somatom Definition AS+ Siemens) performed without contrast administration at -30% and at -70% of the doses (mAs) was compared to the standard acquisition in 10 patients. The raw data were reconstructed by filtered back projection (FBP) and using the SAFIRE iterative reconstruction method (five levels of iteration).

Humans use internal models to construct and update a sense of verticality.

Internal models serve sensory processing, sensorimotor integration and motor control. They could be a way to construct and update a sense of verticality, by combining vestibular and somatosensory graviception. We tested this hypothesis by investigating self-orientation relative to gravity in 39 normal subjects and in subjects with various somatosensory losses showing either a complete deafferentation of trunk and lower limbs (14 paraplegic patients after complete traumatic spinal cord injury) or a gradient in the degree of a hemibody sensory loss (23 hemiplegic patients after stroke).

Immediate reactions following iodinated contrast media injection: a study of 38 cases.

Objectives: To investigate the pathomechanisms involved in cases of immediate hypersensitivity reactions occurring after the administration of iodinated contrast media.

Materials And Methods: Patients having presented clinical signs of immediate hypersensitivity suggesting allergy after iodinated contrast medium were investigated. Histamine and tryptase concentrations were measured, and/or skin tests were performed.

Anatomical basis of transgluteal pudendal nerve block.

Background: The pudendal nerve may become entrapped either within the pudendal canal or near the sacrotuberous ligament resulting in a partial conduction block. The goal of the present anatomical study was to assess a new transgluteal injection technique in terms of the precise injection site and the resulting distribution of the injected agent.

Materials And Methods: This study was carried out using eight fresh human cadavers.

Medial canthus single-injection episcleral (sub-tenon anesthesia): computed tomography imaging.

Unlabelled: Single-injection medial canthus periocular anesthesia is a promising regional anesthesia technique for ophthalmic surgery. The purpose of this computed tomography (CT) study was to confirm that this technique is an episcleral injection and to explain why it provides a good akinesia of the globe. Four fresh nonpreserved cadavers (eight eyes) were injected with fractioned various volumes of a contrast media using a previously described technique.

[Diaphragm kinetics coupled with spirometry. M-mode ultrasonographic and fluoroscopic study; preliminary results].

Most techniques used so far for the evaluation of diaphragm kinetics are either invasive (electromyography, fluoroscopy), or indirect (respiratory pressures, impedance plethysmography). The aim of this study was to determine whether assessment with ultrasound or fluoroscopy differed, and which technique appeared more suitable in the investigation of quantitative hemidiaphragmatic displacement. Six patients (3 female, 3 male, aged 29 to 40) without respiratory disease were studied during systematic X-Ray chest examination, spirometry, and abdominal sonography.

[Contribution of imaging in closed thoracic trauma].

Conventional or digital chest radiographs are usually efficient for diagnosis of minor chest trauma. The primary modality for diagnostic evaluation of severe blunt chest trauma remains chest X-ray. Other imaging modalities especially CT have to be performed.

[Calcification of the pectineal ligament. An usual radiological imaging in pediatrics].

Objectives: Since its first description several years ago in the elderly subject, calcification of the Cooper ligament is often considered as a rare anecdotal phenomenon. We present the radiographic presentation which is often not well known.

Methods: Two experienced radiologists examined independently a series of 100 consecutive X-rays of the pelvis performed in a population of elderly subjects (mean age 84.

[Lipomatous hypertrophy of the interatrial septum. Apropos of 3 cases and review of the literature].

Lipomatous hypertrophy of the interatrial septum is characterised by an accumulation of fatty tissue in the interatrial septum. The authors report three cases, one presenting with sinus tachycardia and the other two being chance findings. Echocardiography associated with cardiac computerised tomography or magnetic resonance imaging usually confirms the diagnosis.

Juvenile fibromatosis resembling aponeurotic fibroma and congenital multiple fibromatosis. One case with pleuropulmonary involvement.

This article deals with a young school boy born in 1971 with a tumor in the palm of his right hand. We have considered this a juvenile aponeurotic fibroma. This tumor has recurred several times, leading to unavoidable amputation of the right wrist and hand.

[Abdominal injuries. Value of emergency abdominal echotomography].

The purpose of this study was to evaluate the usefulness of abdominal ultrasonic tomography, among other methods, to detect visceral lesions in multiple traumas of the abdomen. Forty-seven case-records of abdominal traumas observed over an 8-month period were selected. We used a real-time sectorial ultrasound scanner with a 3.