56,404 research outputs found
High Pitch Dual Source CT Pulmonary Angiography with Reduced IV Contrast Dose and Free-Breathing
No full textPURPOSE
To compare different contrast material injection protocols using free breathing high-pitch dual-source pulmonary
angiography in patients with suspected pulmonary embolism.
METHOD AND MATERIALS
Data of 50 consecutive patients refferred for CTPA for exclusion of PE were retrospectevely evaluated.All scans were
performed on a 128-channel dual-source CT scanner (Somatom Definition Flash, Germany) with a high-pitch
protocol ( pitch 3.0,100kV, 180mAs).In group 1 (n=20) contrast enhancement was achieved by injecting 1.5mLxkg of
CM followed by a saline chaser of 50cc, and in group 2 contrast enhancement was achieved by means of a dose
Iodine converter ( Bracco, italy) followed by a saline chaser of 50 cc. In all studies, Iomeron (400mg/ml) was used and
injected at 4ml/sec. Attenuation profiles in the pulmonary trunk and on segmental levels were measured to evaluate
the enhancement within the pulmonary arteries. Image quality and motion artifacts were assessed using a 3 degree
scale ( 1-non-diagnostic), (2-poor), (3-sufficient). Statiscal analysis was performed by using the Wilcoxon test.
RESULTS
The amount of CM generated by the Dose Iodine Converter for reduced IV constrat dose ranged from 30 to 55 mL. In
all patients an adequate and homogeneous contrast enhancement of more than 250 HU was achieved in the
pulmonary arteries. No statiscally significant difference between group 1 and 2 was observed (p<0.05) regarding the
attenuation of the pulmonary arteries. With regard to image quality and motion artifacts, all examinations were
classified as sufficient.
CONCLUSION
A homogeneous opacitifaction of the pulmonary arteries and sufficient image quality partially free of motion artifacts
due to breathing , can be achieved with reduced IV contrast dose in high pitch CT pulmonary angiography.
CLINICAL RELEVANCE/APPLICATION
High Pitch Dual Source CT pulmonary angiography is recommended for patients that are not able to hold their breat
Curved Multiplanar Reconstructions for the Evaluation of the Aorta in Multisystem Trauma Patients by Using Ultra- High Pitch CT
No full textPURPOSE
The purpose of our study was to investigate on the applicability of Curved Multiplanar Reconstructions (CMR) for the
evaluation of the aorta in multi-system trauma patients by using Ultra-High Pitch CT , the so called FLASH
acquisition.
METHOD AND MATERIALS
From October 2011 to February 2012, 32 patients (43-72 years old, mean age, 58 years old ) underwent 34 wholebody
CT examinations by using a SOMATOM Definition Flash (Siemens Medical Solutions , Forchheim, Germany).The
arterial phase was acquired by using bolous tracking technique, following a venous phase at 60 sec. delay from the
initiation of contrast material injection (1.3 mL/kg patient body weight at 400mgmL iodine concentration ; flow 4mL/s,
followed by a saline chaser bolous of 50 ml).Post- processing images were automatically generated by SyngoVIA
(Siemens Medical Solutions , Forchheim, Germany) workstation. Two experienced emergency radiologists analyzed
the arterial phase using Ultra High-Pitch acquisition technique. Image quality was assessed in 2D and CMR
algorithms using a 4 degree scale: 1) not diagnostic, 2) fairly diagnostic 3) good, 4) optimal. Statistical analysis was
performed by using the Wilcoxon test.
RESULTS
CMR was useful in determining the presence, extension and characterization of aortic injuries in 4 out of 12
cases(33%) not visualized in 2D images .Twenty-eight out of 32 (87.5%) of the arterial phase examinations were
classified as optimal, whereas the remaining 4 (12.5%) were classified as good. Two CT examinations were
repeated because of artifacts mimicking aortic injuries. None of the CT examinations were considered nondiagnostic.
CONCLUSION
Curved Multiplanar Reconstructions are useful in addition to 3D multiplanar reconstructions algorithms in the
evaluation of post-traumatic aortic injuries.
CLINICAL RELEVANCE/APPLICATION
CMR can demostrate eloquent areas of aortic injury and is recommended as part of post-proccesing in the study of
the aorta
RENO-PORTAL VEIN AND SIDE TO SIDE ANASTOMOSIS IN THE RAT
No full textInternational Journal of Microsurger
Corrigendum to “Italian consensus conference on management of uterine sarcomas on behalf of S.I.G.O. (Societa' italiana di Ginecologia E Ostetricia)” [Eur J Canc. vol. 139 November (2020) Pages 149–168] (European Journal of Cancer (2020) 139 (149–168), (S0959804920304676), (10.1016/j.ejca.2020.08.016))
No full textThe authors would like to apologise for any inconvenience caused. The authors regret that the Author affiliation details in the published article are incomplete. The affiliation details for Author Vittorio Quagliuolo should appear as Chirurgia Sarcomi, Melanomi, tumori rari, Humanitas Research and Clinical Hospital IRCCS. The full Author list and affiliation details are given here. Gabriella Ferrandina a,b, Cynthia Aristei c, Pietro Raimondo Biondetti d, Ferdinando Carlo Maria Cananzi e, Paolo Casali f,g, Francesca Ciccarone a, Nicoletta Colombo h, Alessandro Comandone i,j, Renzo Corvo' k,l, Pierandrea De Iaco m, Angelo Paolo Dei Tos n,o, Vittorio Donato p, Marco Fiore q, Franchi r, Angiolo Gadducci s, Alessandro Gronchi t, Stefano Guerriero u, Amato Infantev, Franco Odicino w, Tommaso Pirronti v,x, Vittorio Quagliuolo y, Roberta Sanfilippo z, Antonia Carla Testa a,b, Gian Franco Zannoni aa,ab, Giovanni Scambia a,b, Domenica Lorussoa,b a Fondazione Policlinico Universitario A. Gemelli IRCCS, Gynecologic Oncology Unit, Roma, Italy b Universita' Cattolica Del Sacro Cuore, Roma, Italy c Radiation Oncology Section, Perugia General Hospital, Perugia, Italy d Department of Radiology, Ca' Granda IRCSS Maggiore Policlinico Hospital Foundation Trust, Milan, Italy e Surgical Oncology Unit - Humanitas Clinical and Research Center, Rozzano, Italy f Department of Cancer Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy g Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy h Gynecologic Cancer Program, University of Milan-Bicocca and European Institute of Oncology, IRCCS, Milan, Italy i Division of Medical Oncology, Humanitas Gradenigo Hospital, Turin, Italy j ASL Città di Torino, Turin, Italy k Radiation Oncology Department, IRCCS Ospedale Policlinico San Martino, Genoa, Italy l Health Science Department (DISSAL), University of Genoa, Genoa, Italy m Unit of Oncologic Gynecology, Department of Obstetrics and Gynecology, University of Bologna, Hospital of Bologna Sant'Orsola-Malpighi Polyclinic, Bologna, Italy n Department of Pathology, Treviso General Hospital Treviso, Padova, Italy o University of Padua, Padova, Italy p Radiation Oncology Division, Oncology and Specialty Medicine Department, San Camillo-Forlanini Hospital, Roma, Italy q Department of Surgery, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy r Department of Obstetrics and Gynecology, AOUI Verona, University of Verona, Verona, Italy s Department of Clinical and Experimental Medicine, Division of Gynecology and Obstetrics, University of Pisa, Pisa, Italy t Chair Sarcoma Service, Department of Surgery, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy u Department of Obstetrics and Gynecology, University of Cagliari, Policlinico Universitario Duilio Casula, Monserrato, Cagliari, Italy v UOC COVID-2, Department of Bioimaging and Radiological Sciences, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Italy w Division of Obstetrics and Gynecology, ASST Spedali Civili di Brescia, Università degli Studi di Brescia, Italy x Catholic University of Sacred Hearth, Department of Radiology, Rome, Italy y Chirurgia Sarcomi, Melanomi, tumori rari, Humanitas Research and Clinical Hospital IRCCS z Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy aa Fondazione Policlinico Universitario A. Gemelli IRCCS, Department of Woman, Child and Public Health Sciences, Gynecopathology and Breast Pathology Unit, Rome, Italy ab Pathological Anatomy Institute, Catholic University of Sacred Hearth, Rome, Italy The authors would like to apologise for any inconvenience caused
UTILITA' DELLA BIOPSIA MIRATA MEDIANTE T.A.C. NELLE RECIDIVE PERINEALI DEGLI OPERATI DI AMPUTAZIONE DI RETTO SECONDO MILES
No full textA 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
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