Search results for " ToM"

Left Renal Vein Anatomical Anomalies: Radiological and Surgical Implications

1998

Objective: To emphasize the incidence and clinical, diagnostic and surgical implications of left renal vein developmental anomalies. Design: Retrospective analysis of case notes. Setting: Clinical Anatomy Department and Surgery Department, Faculty of Medicine, University of Valencia, Spain. Patients, participants: Standard radiological examinations (CT scan) performed on 745 patients; surgical findings at operation in 128 patients with aorto-iliac atherosclerotic disease, and 72 donor cadavers for transplantation. Main outcome measures: Incidence of left renal vein anomalies (retro-aortic left renal vein and peri-aortic renal venous collar), based on radiological (CT scan) and surgical obse…

Spontaneous Resorption of an Occipital Meningocele: Computed Tomography and Magnetic Resonance Imaging Evaluation

2016

Cranial meningocele is a very rare variant of encephalocele. Meningocele can be associated with other disorders and may cause complications. Therapy is usually based on surgical treatment. To our knowledge, we describe the first case of spontaneous resorption of an occipital meningocele in a full-term newborn boy. A full-term newborn was noted to have a large non-skin covered, semitransparent cystic lump in the occipital bone. He underwent computed tomography and a diagnosis of meningocele was proposed. After a few hours, the cystic lump spontaneously readsorbed. After 1 week the patient underwent magnetic resonance. Histology confirmed the diagnosis.

PET Lung Ventilation/Perfusion Imaging Using 68Ga Aerosol (Galligas) and 68Ga-Labeled Macroaggregated Albumin

2012

Pulmonary imaging using ventilation/perfusion (V/P) single-photon emission tomography (V/P scan) with Tc-99m-labeled radiotracers is a well-established diagnostic tool for clinically suspected pulmonary embolism (PE). Ga-68 aerosol (Galligas) and Ga-68-labeled macroaggregated albumin (MAA) are potential tracers for positron emission tomography (PET) lung V/P imaging and could display an advantage over conventional V/P scans in terms of sensitivity and specificity. After radiochemical and animal studies, the clinical applicability of Ga-68 aerosol (Galligas) and Ga-68-labeled MAA was investigated in an exploratory study in patients with clinical suspicion of PE. PET scans were acquired using…

Parametric assessment of myocardial perfusion by densitometric evaluation of digital subtraction coronary angiograms: a comparison with tomographic T…

2002

Densitometric results about local myocardial perfusion are compared with those derived from a quantitative analysis of TL-201 single photon emission computer tomograms (TL-201 SPECT). Ten patients underwent conventional TL-201 SPECT at rest and after maximum bicycle stress and dipyridamole infusion the day prior to the investigation. SPECT was applied to provide improved spatial resolution for the detection of perfusion abnormalities. During the catheterization procedure four digital subtraction coronary angiograms were performed, two of the left and two of the right coronary artery both before and after pharmacologically induced hyperemia by intracoronary papaverine. The densitometric para…

Befunde der optischen Kohärenztomografie (OCT) bei Behandlung einer submakulären Blutung durch ein retinales Makroaneurysma mit intravitrealer Injekt…

2015

Coronary plaque imaging with multislice computed tomography: technique and clinical applications.

2006

The composition of an atherosclerotic lesion, rather than solely the degree of stenosis, is considered to be an important determinant of acute coronary events. Whereas until recently only invasive techniques have been able to provide clues about plaque composition with consistent reproducibility, several recent studies have revealed the potential of multislice computed tomography (MSCT) for noninvasive plaque imaging. Coronary MSCT has the potential to detect coronary plaques and to characterize their composition based on the X-ray attenuating features of each structure. MSCT may also reveal the total plaque burden (calcified and noncalcified components) for individual patients with coronar…

Ventilation Distribution In Two Different Models Of Acute Lung Injury - Electrical Impedance Tomography Validation By Dynamic Xenon-Multidetector-Row…

2011

Die Positronenemissionstomographie zur pr�operativen Lymphknotendiagnostik bei �sophaguskarzinom

2003

Vorraussetzung fur Indikation und Wahl des geeigneten operativen Verfahrens bei Patienten mit Osophaguskarzinom ist ein genaues praoperatives Staging. Ziel der prospektiven Studie war es, zu klaren, ob eine Positronenemissionstomographie mit 18F-Fluoro-Deoxyglukose (FDG-PET) die Genauigkeit des praoperativen Lymphknotendiagnostik gegenuber der Computertomographie (CT) erhoht und die Wahl des operativen Zugangs zur Osophagusresektion beeinflusst. 58 Patienten, 46 Manner und 12 Frauen (Alter 61 Jahre im Mittel), erhielten bei histologisch gesichertem Osophaguskarzinom im Rahmen des Stagings ein FDG-PET von Hals, Thorax und Abdomen sowie ein CT von Thorax und Abdomen. Sensitivitat, Spezifitat …

Computertomographie nach extrakorporaler Stoßwellenlithotripsie (ESWL) der Nieren

1993

In 105 patients CT studies were done prospectively after renal ESWL with a second generation lithotripter. 33 (31%) of the patients had renal oedema (n = 8), renal (n = 20) or extrarenal (n = 31) bleeding. Three of the 23 patients who had a three year follow-up had chronic renal changes, 10 had renal stones. As blunt renal trauma can be the cause of renal hypertension a longterm follow-up is necessary in ESWL patients, particularly if there was renal bleeding after treatment. Further studies are needed to determine the exact risk of renal hypertension after ESWL.

Can Early Postoperative O-(2-18FFluoroethyl)-l-Tyrosine Positron Emission Tomography After Resection of Glioblastoma Predict the Location of Later Tu…

2019

Objective Glioblastoma inevitably recurs despite aggressive therapy. Therefore, it would be helpful to predict the location of tumor recurrence from postoperative imaging to customize further treatment. O-(2-18Ffluoroethyl)- l -tyrosine (FET) positron emission tomography (PET) might be a helpful technique, because tumor tissue can be differentiated from normal brain tissue with high specificity. Methods Thirty-two consecutive patients with perioperative and follow-up imaging data available were included. On postoperative FET-PET, the tumor/normal brain (TTB) ratio around the resection cavity borders was measured. Increased TTB ratios were recorded and anatomically correlated with the site o…