Search results for "Whole body"

Blood volume and extracellular space (ECS) of the whole body and some organs of the rat.

1978

Methods are described for estimation of blood volume and extracellular space (ECS) in the whole body and in some organs with 51Cr, 14C-thiocyanate and 3H-inulin. A mean blood volume of 47 ml/kg, a thiocyanate space of 350 ml/kg and a inulin space of 288 ml/kg were determined in the rat. The corresponding values of organs are shown in figures 1--3.

Quantitative Determination of Renal 99mTc-MAG3 Clearance. A Comparison of Results Acquired Simultaneously in Whole Body Geometry and with a Gamma Cam…

1997

289 patients were simultaneously investigated with a partially shielded whole body counter (Oberhausen) and in camera technique to correlate the values of the MAG3-clearance. Good correlation was found for the often used times schedules of taking blood samples. Late blood samples increase high clearance values in both methods slighly. The shape of the ROI has no influence using camera technique. We conclude, that camera technique can replace the Oberhausen method with a partially shielded whole body counter.

European vestibular experiments on the Spacelab-1 mission: 4. Thresholds of perception of whole-body linear oscillation.

1986

Thresholds for the detection of linear oscillatory motion at 0.3 Hz in the X, Y and Z body axes were determined during the flight of Spacelab-1 and on the ground pre- and post-flight, using the method of limits with a single staircase procedure. Pre-flight, Z axis thresholds (mean 0.077 ms-2) were significantly higher than X and Y thresholds (mean 0.029 ms-2). Measures obtained on three crew members in-flight exhibited thresholds greater, by a factor of 1.5-4.3, than those obtained pre-flight. Post-flight, two crew members had significantly elevated X and Y axis thresholds whereas the other two crew members had lowered thresholds in X, Y and Z axes. In general, thresholds had returned to pr…

A 20-channel receive-only mouse array coil for a 3 T clinical MRI system

2011

A 20-channel phased-array coil for MRI of mice has been designed, constructed, and validated with bench measurements and high-resolution accelerated imaging. The technical challenges of designing a small, high density array have been overcome using individual small-diameter coil elements arranged on a cylinder in a hexagonal overlapping design with adjacent low impedance preamplifiers to further decouple the array elements. Signal-to-noise ratio (SNR) and noise amplification in accelerated imaging were simulated and quantitatively evaluated in phantoms and in vivo mouse images. Comparison between the 20-channel mouse array and a length-matched quadrature driven small animal birdcage coil sh…

Effects Of Whole Body Vibration In Patients With Chronic Obstructive Pulmonary Disease - A Randomized Controlled Trial

2012

Summary Introduction To date endurance and strength training are established and evidence-based exercise methods in patients with chronic obstructive pulmonary disease (COPD). There is an unmet need for further research in new and complementary exercise modalities. Additional whole body vibration training during pulmonary rehabilitation may be such a new approach that has not yet been investigated in patients with COPD. Methods Eighty-two patients (65 ± 9 yrs, FEV 1 pred. 38 ± 11%, female 51%) with COPD in GOLD stage III to IV assessed for a 3-week inpatient multidisciplinary rehabilitation program were on top randomly assigned to one of two intervention groups: (1) 3 × 3 min of bilateral d…

2015

It has been shown that the mental fatigue induced by prolonged self-regulation increases perception of effort and reduces performance during subsequent endurance exercise. However, the physiological mechanisms underlying these negative effects of mental fatigue are unclear. The primary aim of this study was to test the hypothesis that mental fatigue exacerbates central fatigue induced by whole-body endurance exercise. Twelve subjects performed 30 min of either an incongruent Stroop task to induce a condition of mental fatigue or a congruent Stroop task (control condition) in a random and counterbalanced order. Both cognitive tasks (CTs) were followed by a whole-body endurance task (ET) cons…

Ganzkörper-Spiral-CT zur Primärdiagnostik polytraumatisierter Patienten unter Notfallbedingungen

1997

PURPOSE The aim of this study was to evaluate the role of a fast whole body helical CT scanner for primary diagnosis in trauma patients. METHODS 27 severely injured patients (9 women, 18 men; mean age 43 years) were first examined with a helical CT scanner allowing for digital radiograms up to a length of 1024 mm and continuous helical scans of up to 70 seconds (slice thickness 3 to 10 mm, pitch factor up to 2). The primary CT diagnosis was verified either by x-ray after the CT examination or during the subsequent days, by abdominal ultrasound, by additional CT scans in the following days, and by clinical follow-up. RESULTS CT showed all clinically relevant injuries of the head, spine, ches…

Ruolo della RM whole body nell’identificazione di reperti incidentali in pazienti con linfoma.

2016

Scopo: Il dibattito in merito ai reperti incidentali sta divenendo emergente in molti settori radiologici, quali l’ambico cardiaco, addominale, neurologico, senologico, pediatrico, soprattutto con metodiche quali la RM e la TC. Lo scopo del nostro studio è stato di valutare l’utilità della Risonanza Magnetica Whole Body (RM-WB) nell’identificazione di reperti incidentali in pazienti con linfoma. Materiali e metodi: Sono state revisionate le RM-WB eseguite su 114 pazienti (65 maschi; età mediana 45,2 anni, range 15-86) con diagnosi istologica di linfoma (47 Hodgkin, 67 Non-Hodgkin). I reperti incidentali sono stati classificati in tre classi: non significativi (classe 1), moderatamente signi…

Confronto tra RM Whole Body, TC/PET e biopsia osteomidollare, nella valutazione dell’interessamento midollare in 104 pazienti con linfoma.

2016

Scopo: Parte della stadiazione dei linfomi prevede la valutazione dell'interessamento del midollo osseo (IMO) mediante biopsia osteo-midollare (BOM) [1]. Tuttavia, secondo le ultime linee guida, la BOM non è più indicata per lo studio dei linfomi di Hodgkin [2]. La TC/PET è la tecnica di imaging standard per la stadiazione dei linfomi FDG-avidi, mentre la TC è indicata nei pazienti con istotipi non FDG-avidi [1]. Molti studi hanno dimostrato affidabilità ed elevata accuratezza diagnostica della Risonanza Magnetica Whole Body (RM-WB) nella stadiazione dei linfomi [3,4]. Lo scopo del nostro studio è stato quello di confrontare RM-WB, TC/PET e BOM, nella valutazione dell’IMO in pazienti con li…

Osteonecrosi individuate mediante RM whole body in pazienti con Linfoma di Hodgkin trattati mediante BEACOPP.

2016

Scopo: Il trattamento del Linfoma di Hodgkin (LH) ha condotto al raggiungimento di elevati tassi di sopravvivenza [1]. Il protocollo ABVD (Doxorubicina, Bleomicina, Vinblastina e Dacarbazina) è stato considerato per molto tempo il regime chemioterapico standard nei pazienti con LH [2], grazie a una ben documentata efficacia e una scarsa tossicità. Molti studi hanno dimostrato la maggiore efficacia del protocollo BEACOPP (Bleomicina, Etoposide, Doxorubicina, Ciclofosfamide, Vincristina, Procarbazina, Prednisone) rispetto all'ABVD [3], al costo di una maggiore tossicità. L'osteonecrosi [ON] è una possibile complicanza della chemioterapia che può compromettere la qualità di vita del paziente, …