83 research outputs found

    Status of the RFX experiment

    Get PDF
    The first results obtained in the RFX reversed field pinch experiment after the 1995 machine modifications are reported. The confinement, for fully stationary discharges at 0.6 MA, has now reached the expected values, even in the presence of MHD wall locked modes. Studies on locked mode effects have evidenced currents flowing from the plasma into the vessel in the region of locking. Measurements on plasma rotation and radial electric field have shown a perpendicular velocity shear at the edge similar to what is found in tokamaks and stellarators. New measurements on edge superthermal electrons and some evidence of their correlation with plasma core characteristics are included

    Follow-Up Assessment of Intracranial Aneurysms Treated with Endovascular Coiling: Comparison of Compressed Sensing and Parallel Imaging Time-of-Flight Magnetic Resonance Angiography

    Get PDF
    The aim of our study was to compare compressed sensing (CS) time-of-flight (TOF) magnetic resonance angiography (MRA) with parallel imaging (PI) TOF MRA in the evaluation of patients with intracranial aneurysms treated with coil embolization or stent-assisted coiling. We enrolled 22 patients who underwent follow-up imaging after intracranial aneurysm coil embolization. All patients underwent both PI TOF and CS TOF MRA during the same examination. Image evaluation aimed to compare the performance of CS to PI TOF MRA in determining the degree of aneurysm occlusion, as well as the depiction of parent vessel and vessels adjacent to the aneurysm dome. The reference standard for the evaluation of aneurysm occlusion was PI TOF MRA. The inter-modality agreement between CS and PI TOF MRA in the evaluation of aneurysm occlusion was almost perfect (κ = 0.98, p < 0.001) and the overall inter-rater agreement was substantial (κ = 0.70, p < 0.001). The visualization of aneurysm parent vessel in CS TOF images compared with PI TOF images was evaluated to be better in 11.4%, equal in 86.4%, and worse in 2.3%. CS TOF MRA, with almost 70% scan time reduction with respect to PI TOF MRA, yields comparable results for assessing the occlusion status of coiled intracranial aneurysms. Short scan times increase patient comfort, reduce the risk of motion artifacts, and increase patient throughput, with a resulting reduction in costs. CS TOF MRA may therefore be a potential replacement for PI TOF MRA as a first-line follow-up examination in patients with intracranial aneurysms treated with coil embolization

    When more is not better: 10 'don'ts' in endometriosis management. An ETIC* position statement

    Get PDF
    41noETIC Endometriosis Treatment Italian ClubopenA network of endometriosis experts from 16 Italian academic departments and teaching hospitals distributed all over the country made a critical appraisal of the available evidence and definition of 10 suggestions regarding measures to be de-implemented. Strong suggestions were made only when high-quality evidence was available. The aim was to select 10 low-value medical interventions, characterized by an unfavorable balance between potential benefits, potential harms, and costs, which should be discouraged in women with endometriosis. The following suggestions were agreed by all experts: do not suggest laparoscopy to detect and treat superficial peritoneal endometriosis in infertile women without pelvic pain symptoms; do not recommend controlled ovarian stimulation and IUI in infertile women with endometriosis at any stage; do not remove small ovarian endometriomas (diameter <4 cm) with the sole objective of improving the likelihood of conception in infertile patients scheduled for IVF; do not remove uncomplicated deep endometriotic lesions in asymptomatic women, and also in symptomatic women not seeking conception when medical treatment is effective and well tolerated; do not systematically request second-level diagnostic investigations in women with known or suspected non-subocclusive colorectal endometriosis or with symptoms responding to medical treatment; do not recommend repeated follow-up serum CA-125 (or other currently available biomarkers) measurements in women successfully using medical treatments for uncomplicated endometriosis in the absence of suspicious ovarian cysts; do not leave women undergoing surgery for ovarian endometriomas and not seeking immediate conception without post-operative long-term treatment with estrogen-progestins or progestins; do not perform laparoscopy in adolescent women (<20 years) with moderate-severe dysmenorrhea and clinically suspected early endometriosis without prior attempting to relieve symptoms with estrogen-progestins or progestins; do not prescribe drugs that cannot be used for prolonged periods of time because of safety or cost issues as first-line medical treatment, unless estrogen-progestins or progestins have been proven ineffective, not tolerated, or contraindicated; do not use robotic-assisted laparoscopic surgery for endometriosis outside research settings. Our proposal is to better address medical and surgical approaches to endometriosis de-implementing low-value interventions, with the aim to prevent unnecessary morbidity, limit psychological distress, and reduce the burden of treatment avoiding medical overuse and allowing a more equitable distribution of healthcare resources.openAlio, L; Angioni, S; Arena, S; Bartiromo, L; Bergamini, V; Berlanda, N; Bonin, C; Busacca, M; Candiani, M; Centini, G; D’Alterio, M N; Di Cello, A; Exacoustos, C; Fedele, L; Frattaruolo, M P; Incandela, D; Lazzeri, L; Luisi, S; Maiorana, A; Maneschi, F; Martire, F; Massarotti, C; Mattei, A; Muzii, L; Ottolina, J; Perandini, A; Perelli, F; Pino, I; Porpora, M G; Raimondo, D; Remorgida, V; Seracchioli, R; Solima, E; Somigliana, E; Sorrenti, G; Venturella, R; Vercellini, P; Viganó, P; Vignali, M; Zullo, F; Zupi, EAlio, L; Angioni, S; Arena, S; Bartiromo, L; Bergamini, V; Berlanda, N; Bonin, C; Busacca, M; Candiani, M; Centini, G; D’Alterio, M N; Di Cello, A; Exacoustos, C; Fedele, L; Frattaruolo, M P; Incandela, D; Lazzeri, L; Luisi, S; Maiorana, Anna; Maneschi, F; Martire, F; Massarotti, C; Mattei, A; Muzii, L; Ottolina, J; Perandini, A; Perelli, F; Pino, Ida; Porpora, M G; Raimondo, D; Remorgida, V; Seracchioli, R; Solima, E; Somigliana, E; Sorrenti, G; Venturella, R; Vercellini, P; Vigano', Paola; Vignali, M; Zullo, F; Zupi,

    Thalamic changes in mesial temporal sclerosis: a limbic system pathology. A case report

    No full text
    none6Hippocampal abnormalities correlated with mesial temporal sclerosis (MTS) are well documented. MTS may be associated with extrahippocampal anomalies involving limbic structures along a known neuroanatomic pathway (Papez circuit). We report a patient with MTS and thalamic changes. Seizure-related thalamic damage could have been caused by abnormal electric discharges from the mamillary body to the anterior thalamus through the mamillothalamic tract. This suggests that MTS is not limited to the temporal lobe but could represent a limbic system pathology.noneCaranci F;Bartiromo F;Cirillo L;Aiello A;Cirillo S;Brunetti ACaranci F;Bartiromo F;Cirillo L;Aiello A;Cirillo S;Brunetti

    Thalamic changes in mesial temporal sclerosis: a limbic system pathology.

    No full text
    Hippocampal abnormalities correlated with mesial temporal sclerosis (MTS) are well documented. MTS may be associated with extrahippocampal anomalies involving limbic structures along a known neuroanatomic pathway (Papez circuit). We report a patient with MTS and thalamic changes. Seizure-related thalamic damage could have been caused by abnormal electric discharges from the mamillary body to the anterior thalamus through the mamillothalamic tract. This suggests that MTS is not limited to the temporal lobe but could represent a limbic system pathology
    • …
    corecore