Maria Arraiza

University of Toronto, Toronto, Ontario, Canada

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Publications (37)41.25 Total impact

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    ABSTRACT: Cystic lesions within the peritoneum have been classified classically according to their lining on histology into four categories-endothelial, epithelial, mesothelial, and others (germ cell tumors, sex cord gonadal stromal tumors, cystic mesenchymal tumors, fibrous wall tumors, and infectious cystic peritoneal lesions). In this article, we will proceed to classify cystic peritoneal lesions focusing on the degree of radiological complexity into three categories-simple cystic, mildly complex, and cystic with solid component lesions. Many intra-abdominal collections within the peritoneal cavity such as abscess, seroma, biloma, urinoma, or lymphocele may mimic primary peritoneal cystic masses and need to be differentiated. Clinical history and imaging features may help differentiate intra-abdominal collections from primary peritoneal masses. Lymphangiomas are benign multilocular cystic masses that can virtually occur in any location within the abdomen and insinuate between structures. Ultrasound may help differentiate enteric duplication cysts from other mesenteric and omental cysts in the abdomen. Double-layered wall along the mesenteric side of bowel may suggest its diagnosis in the proper clinical setting. Characteristic imaging features of hydatid cysts are internal daughter cysts, floating membranes and matrix, peripheral calcifications, and collagenous pericyst. Non-pancreatic psuedocysts usually have a fibrotic thick wall and chylous content may lead to a fat-fluid level. Pseudomyxoma peritonei appears as loculated fluid collections in the peritoneal cavity, omentum, and mesentery and may scallop visceral surfaces. Many of the primary cystic peritoneal masses have specific imaging features which can help in accurate diagnosis and management of these entities. Knowledge of the imaging spectrum of cystic peritoneal masses is necessary to distinguish from other potential cystic abdominal mimicker masses.
    Abdominal Imaging 10/2014; 40(4). DOI:10.1007/s00261-014-0250-6 · 1.73 Impact Factor
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    ABSTRACT: PurposeTo compare the accuracy of cardiac dual-source CT (DSCT) reconstructions obtained at 5% and 10% of the cardiac cycle and MRI for quantifying global left ventricular (LV) function and mass in heart transplant recipients.
    Radiología 09/2012; DOI:10.1016/j.rx.2011.05.012
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    ABSTRACT: To establish the accuracy and reliability of cardiac dual-source CT (DSCT) and two-dimensional contrast-enhanced echocardiography (CE-Echo) in estimating left ventricular (LV) parameters with respect to cardiac magnetic resonance imaging (CMR) as the reference standard. Twenty-five consecutive heart transplant recipients (20 male, mean age 62.7±10.4 years, mean time since transplantation 8.1±5.9 years) were prospectively recruited. Two blinded readers independently assessed LV ejection fraction (EF), end-diastolic volume (EDV), end-systolic volume (ESV), and stroke volume (SV) for each patient after manual tracing of the endo- and epicardial contours in DSCT, CE-Echo and CMR cine images. Student's t-test for paired samples for differences, and Bland and Altman plots and Lin's concordance-correlation coefficients (CCC) for agreement were calculated. There was no statistical difference between left ventricular parameters determined by DSCT and CMR. CE-Echo resulted in significant underestimation of left ventricular volumes (mean difference EDV: 15.94±14.19ml and 17.1±17.06ml, ESV: 8.5±9.3 and 7.32±9.14ml with respect to DSCT and CMR), and overestimation of EF compared with the cross-sectional imaging modalities (3.78±8.47% and 2.14±8.35% with respect to DSCT and CMR). Concordance correlation coefficients for LV parameters using DSCT and CMR were higher (CCC≥0.75) than CCC values observed between CE-Echo and DSCT- or CMR-derived data (CCC≥0.54 and CCC≥0.49, respectively). Interobserver agreement was higher for DSCT and CMR values (CCC≥0.72 and CCC≥0.87, respectively). In orthotopic heart transplantation cardiac DSCT allows accurate and reliable estimation of LV parameters compared with CMR, whereas CE-Echo seems to be insufficient to obtain precise measurements.
    European journal of radiology 05/2012; 81(11):3282-8. DOI:10.1016/j.ejrad.2012.04.001 · 2.16 Impact Factor
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    ABSTRACT: Cardiovascular disease is the leading cause of death in adults in western countries. Coronary angiography remains the gold standard for the diagnosis of coronary artery disease, a procedure that carries risks. Nowadays, a significant number of the coronary angiographies performed every year are only diagnostic. Multidetector computed tomography (MDCT) allows non-invasive evaluation of coronary arteries. It is a continuously developing technique, and actually the top technology is represented by Dual Source CT. This scanner of new conception permits an improvement in image quality, and visualization of distal vessels and small collateral branches. The aim of our work is to illustrate the actual state of the art in non-invasive coronary arteries evaluation represented by Dual Source CT, presenting images of coronary arteries normal anatomy, anatomical variants and myocardial segment.
    Minerva cardioangiologica 04/2012; 60(2):133-46. · 0.48 Impact Factor
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    ABSTRACT: PURPOSE: To compare the accuracy of cardiac dual-source CT (DSCT) reconstructions obtained at 5% and 10% of the cardiac cycle and MRI for quantifying global left ventricular (LV) function and mass in heart transplant recipients. MATERIAL AND METHODS: We prospectively included 23 heart transplant recipients (21 male, mean age 60±11.7 years) who underwent cardiac DSCT and MRI examinations. We compared LV parameters on cardiac DSCT reconstructions obtained at 5% (0%-95%) and 10% (0%-90%) intervals of the cardiac cycle and on double-oblique short-axis MR images. We determined ejection fraction (EF), end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV), and myocardial mass using commercially available semiautomated segmentation analysis software for DSCT datasets and conventional manual contour tracing for MR studies. RESULTS: Using different reconstruction intervals to quantify LV parameters at DSCT resulted in non-significant differences (P>.05). Compared to MRI, DSCT slightly overestimated LV-EDV, ESV, and mass when both 5% (11.5±25.1ml, 6.8±10.9ml, and 28.3±21.6g, respectively) and 10% (mean difference 15.3±26.3ml, 7.4±11.5ml, and 29.3±18.7g, respectively) reconstruction intervals were used. DSCT and MRI estimates of EF and SV were not significantly different. CONCLUSION: In heart transplant recipients, DSCT allows reliable quantification of LV function and mass compared with MRI, even using 10% interval reconstructions.
    Radiología 09/2011; 54(5):432-441. DOI:10.1016/j.rxeng.2011.05.002
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    ABSTRACT: To assess feasibility, image quality, and radiation dose of prospectively ECG-triggered coronary CT angiography (CTA) in orthotopic heart transplant (OHT) recipients. 47 consecutive OHT recipients (40 men, mean age 62.1 ± 10.9 years, mean heart rate 86.3 ± 14.4 bpm) underwent dual-source CTA to rule out coronary allograft vasculopathy in a prospectively ECG-triggered mode with data acquisition during 35% to 45% of the cardiac cycle. Two independent observers blindly assessed image quality on a per-segment and per-vessel basis using a four-point scale (1-excellent, 4-not evaluable). Scores 1-3 were considered acceptable for diagnosis. Multivariate analysis was performed to evaluate differences between image quality scores obtained at different reconstruction intervals. Effective radiation doses were calculated. 671 coronary segments were evaluated. Interobserver agreement on the image quality was κ=0.75. Diagnostic image quality was observed in 93.9%, 95.5% and 93.3% of the segments at 35%, 40% and 45% reconstruction intervals. Mean image quality score was 1.5 ± 0.7 for the entire coronary tree, 1.4 ± 0.7 for the RCA, 1.6 ± 0.8 for the LCA and 1.6 ± 0.7 for the Cx at the best reconstruction interval. Estimated mean radiation dose was 4.5 ± 1.2 mSv. Systolic prospectively ECG-triggered CTA allows diagnostic image quality coronary angiograms in OHT recipients at low radiation doses.
    European Radiology 04/2011; 21(9):1887-94. DOI:10.1007/s00330-011-2126-2 · 4.34 Impact Factor
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    ABSTRACT: Cardiac allograft vasculopathy and late graft failure are the main limiting factors of long-term success of heart transplantation, and little is known about graft function in the long-term survivors. The aim of this study was to assess the ventricular function and the allograft vasculopathy in long-term survivors (>15 years) with the cardiac magnetic resonance imaging (MRI) and dual-source computed tomography (DSCT) coronary angiogram. In our database, 34 cardiac recipients have more than 15 years of follow-up and were evaluated for this study; 22 (65%) of them were enrolled. Mean age at transplant was 46 ± 13.5 years, mean donor age was 28.5 ± 10.1 years, and mean graft ischemic time was 189 ± 58 min. Mean follow-up was 18.5 ± 2.4 years (range 15-22). All patients underwent cardiac MRI and DSCT. Mean left ventricular (LV) volumes indexed to the body surface area (BSA) were within normal range: the end-diastolic volume/BSA was 61 ± 16 ml m(-2), end-systolic volume/BSA was 22 ± 15 ml m(-2), stroke volume/BSA was 38 ± 6 ml m(-2), LV mass/BSA: 72 ± 18 g m(-2), and mean ejection fraction (EF) was 0.59 ± 0.08. Two patients (9%) showed a global cardiac hypokinesia and two other patients (9%) showed akinesia of one segment. At DSCT, 41% of patients had a strictly normal coronary angiogram, 41% had wall thickening and 18% presented a least one >60% stenosis. Cardiac MRI and DSCT coronary angiogram revealed a normal graft function and morphology after more than 15 years of transplantation. However, a certain number of patients have significant cardiac allograft vasculopathy and another consistent group has initial disease. These patients deserve further follow-up and tailoring of the immunosuppressive regimen.
    European journal of cardio-thoracic surgery: official journal of the European Association for Cardio-thoracic Surgery 03/2011; 40(1):e62-6. DOI:10.1016/j.ejcts.2011.02.055 · 2.81 Impact Factor
  • Revista espanola de anestesiologia y reanimacion 03/2011; 58(3):198.
  • Revista espanola de anestesiologia y reanimacion 01/2011; 58(3):198. DOI:10.1016/S0034-9356(11)70038-X
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    ABSTRACT: PURPOSE To evaluate the feasibility, intrasubject side-to-side variability and reproducibility of using Diffusion Tensor Imaging (DTI) and fiber tractography in the anatomic examination of sciatic nerve (lumbopelvic portion). METHOD AND MATERIALS 10 patients (5 men and 5 women; median age of 33 years) were prospectively enrolled. They underwent DTI examination using 3T and 1,5T MRI. We excluded all patients with pathological findings comprising pelvis and lumbosacral hinge. Informed consent was obtained. Imaging method include single-shot spin-echo-based echoplanar sequence with 30 diffusion weighted direction-encoding imaging of the pelvis , (TR/TE 8900/95; b value 1000 s/mm2, voxel 2,9 x 2,9 x 2,0 mm). The sciatic nerve was divided in 5 portions: 3 spinal roots (L4-L5, L5-S1 and S1-S2), intrapelvic (ip) and extrapevic (ep) portions. Post processing evaluation comprised qualitative review of fiber tractography. Quantitative assessment of fractional anisotropy (FA), apparent diffusion coefficient (ADC) and signal-to-noise ratio were done. Statistical analysis with SPSS 17.0 included normality tests, independent and paired T student tests with a significance level of 0,05. RESULTS The qualitative anisotropy evaluation of sciatic nerve was superimposable in all individuals. Quantitative FA and ADC assessment of sciatic nerve among the different portions demonstrated no intersubject side-to-side differences (FA_L4L5left vs rigth=20,0±110,94; FA_L5S1 left vs right=5,56±44,27; FA_S1S2 left vs right=27,67±62,31; FA_ip left vs right=30,01±82,03; FA_ep left vs right=9,94±102,55; p>0.05; ADC_L4L5 left vs right=85,78±193,29; ADC_L5S1 levft vs right=6,51±166,63; ADC_S1S2 left vs right=47,18±223,15; ADC_ip left vs right=50,49±210,39; ADC_ep left vs right=0,04±261,83; p>0,05). There were no statistical differences in the evaluation between the two types of high field MRI, 1,5 and 3 T (p>0,5); being an exception the ADC extrapelvic part of the right sciatic nerve (147,84±228,08; p=0,025). No genre differences were observed between different portions of sciatic nerve (p>0.05). CONCLUSION Despite being a novel procedure for evaluating sciatic nerve, DTI is an accurate technique for assessing its integrity regardless magnetic resonance field or patient genre. CLINICAL RELEVANCE/APPLICATION Sciatic nerve diffusion tensor imaging becomes a novel technique with important clinical applications regardless the genre of the patient and the field of MRI.
    Radiological Society of North America 2010 Scientific Assembly and Annual Meeting; 11/2010
  • Revista de neurologia 04/2010; 50(7):441-2. · 0.93 Impact Factor
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    ABSTRACT: To compare left atrial performance with dual-source CT (DSCT) with respect to magnetic resonance imaging (MRI) in orthotopic heart transplant recipients. Twenty-nine consecutive heart transplant recipients (27 male; mean age 64.1 +/- 13 years; mean time from transplantation 122.8 +/- 69.7 months) referred for exclusion of cardiac allograft vasculopathy underwent cardiac DSCT and MRI. Standard biatrial technique was employed in 13 subjects whereas 16 were transplanted after the bicaval technique. Axial 5-mm slice-thickness DSCT datasets reconstructed in 5% steps of the cardiac cycle and axial 5-mm SSFP-MRI images were analyzed. Two blinded readers manually traced left atrial contours in random order to estimate end-diastolic volume (EDV), end-systolic volume (ESV), and ejection fraction (EF). Parameters were compared with a paired sample Student t test. Concordance correlation coefficient (CCC) was calculated to determine measurement agreement between techniques and observers. Left atrial volumes were significantly higher with cardiac DSCT (EDV: 170.9 +/- 78.1 mL; ESV: 139.5 +/- 76.6 mL) than with MRI (EDV: 158.2 +/- 72.5 mL; ESV: 124.2 +/- 68.2 mL), whereas left atrial EF was lower with DSCT (EF: 20.8% +/- 7.5% vs. 23.6% +/- 7.7%) (P < 0.05). Measurement agreement between DSCT and MRI was excellent for all parameters (CCC > or =0.82). Individuals operated with the biatrial anastomosis technique presented significantly higher left atrial volumes and lower EF compared with subjects with bicaval anastomosis. Interobserver agreement was excellent for all parameters (CCC > or =0.80). Even if DSCT slightly overestimates left atrial volumes with respect to MRI, results remain clinically valid. Bicaval surgical technique offers improved left atrial performance compared with standard biatrial anastomosis. DSCT may be used as a reliable tool to estimate left atrial parameters in orthotopic heart transplant recipients.
    Investigative radiology 12/2009; 45(2):72-6. DOI:10.1097/RLI.0b013e3181c4f535 · 4.45 Impact Factor
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    ABSTRACT: PURPOSE To assess the usefulness of 14 G needle core biopsy (NCB) of suspicious axillary lymph nodes. METHOD AND MATERIALS Retrospective study. From March 2001 to March 2009 we performed 216 US-guided NCB cases of axillary lymph nodes in 212 patients (mean age 52,5 years, range 29-86). The initial detection of lymph nodes was done by palpation (38 cases), CT (12 cases), PET (23 cases) or ultrasonography (143 cases). All lymph nodes showed suspicious features. We reviewed the medical records searching for the pathologic reports (both the NCB and surgery) and complications. RESULTS There were 184 breast tumors (161 diagnosed when the NCB were performed and 23 previously diagnosed), 14 nonmammary tumors ( 3 ovarian adenocarcinomas, 5 lymphomas, 2 lung cancers, 2 colon adenocarcinomas, 1 gastric adenocarcinoma and one fungoid mycosis), 7 cases of metastases from unknown tumor and 11 nontumoral diseases (1 HIV, 1 toxoplasmosis, 1 Kikuchi disease, 1 rheumatoid arthritis and 7 with other inflammatory processes). The NCB results were: insufficient material, 6 cases (2,8%); malignant cases, 159 (73,6%); benign cases, 51 (23,6%). Surgery was performed in 120 malignant cases, in 14 benign cases initially diagnosed after NCB and in 15 cases during follow up. Ten false negative cases were found (sensitivity 94%). No false positive results were obtained. Complications: 2 important haematomas that did not need drainage. CONCLUSION The NCB for suspicious axillary lymph nodes under ultrasound guidance is a reliable and safe technique, with a low rate of complications and high sensitivity. CLINICAL RELEVANCE/APPLICATION US-guided needle core biopsy is a reliable and safe technique with clinical usefulness in the evaluation of suspicious axillary lymph nodes.
    Radiological Society of North America 2009 Scientific Assembly and Annual Meeting; 12/2009
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    ABSTRACT: PURPOSE In orthotopic heart transplant (OHT) recipients the bicaval surgical technique may produce more physiologic atrial contraction than the standard biatrial anastomosis, approaching the performance of normal atria. The aim of this study was to assess left atrial (LA) function and volumes in OHT recipients operated with standard and bicaval anastomotic techniques and compare these parameters with those of normal subjects. METHOD AND MATERIALS Forty-two consecutive OHT recipients (27 bicaval, 15 standard) and sixteen non-transplanted individuals underwent dual-source CT (DSCT) coronary angiography to rule out coronary allograft vasculopathy and coronary artery disease, respectively. Two independent observers manually traced LA contours on axial 5-mm slice thickness multiphase reconstructions at 5% steps (0-95% of the cardiac cycle). End-diastolic volume (EDV), end-systolic volume (ESV), and ejection fraction (EF) were compared in all individuals using the Kruskal-Wallis test. Pair-wise comparison allowed estimating differences between surgical techniques and with respect to non-transplanted subjects. RESULTS In OHT recipients statistically significant differences were observed for all LA parameters (p<0.01). Individuals operated with the bicaval technique presented significantly lower EDV (mean difference:117.2±50.1 ml) and ESV (mean difference:114.5±48.7 ml), and higher EF (mean difference:8.2±2.2%) than patients undergoing standard biatrial anastomosis (p<0.05). Differences in LA parameters were also statistically significant between OHT recipients operated with the more physiological bicaval technique and non-transplanted subjects for ESV (mean difference:23.7±12.7 ml) and EF (mean difference:17.7±2.9%) but not for EDV (mean difference:6.1±12.6 ml). CONCLUSION Bicaval anastomosis offers improved LA performance compared with the standard biatrial technique but still differs from normal LA volumes and function. CLINICAL RELEVANCE/APPLICATION DSCT allows evaluating left atrial volumes and function in OHT recipients.
    Radiological Society of North America 2009 Scientific Assembly and Annual Meeting; 11/2009
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    ABSTRACT: PURPOSE To assess accuracy of global left ventricular (LV) function and mass quantification with ten and twenty multiphase cardiac dual-source CT (DSCT) reconstructions as compared with MRI in heart transplant recipients. METHOD AND MATERIALS Nineteen heart transplant recipients (17 male, mean age 61.9±14.2 years, mean transplant time 121.05±71.98 months) who underwent cardiac DSCT and MRI examinations were prospectively included. For the assessment of LV parameters cardiac DSCT reconstructions obtained at 5% (twenty phases) and 10% (ten phases) intervals of the cardiac cycle with MRI double-oblique short-axis images were compared. In all individuals ejection fraction (EF), end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV), and myocardial mass were determined using commercially available semiautomated segmentation analysis software tool for DSCT data and conventional manual contour tracing for MR studies. RESULTS Quantification of LV parameters using different reconstruction intervals at DSCT led to non-significant differences (p>0.05). When compared to MRI significant overestimation of LV volumes and mass was observed with DSCT in both 5% (mean difference EDV: 20.79±29.02 ml; ESV: 14.68±17.34 ml; mass 36.89±14.47 g) and 10% (mean difference EDV: 18.31±28.19 ml; ESV: 11.37±19.45 ml; mass 35.53±15.58 g) reconstruction intervals, whereas not significant differences were observed in EF and SV estimation. CONCLUSION In heart transplant recipients DSCT allows reliable quantification of LV function and mass compared with MRI, even using 10% interval reconstructions. CLINICAL RELEVANCE/APPLICATION DSCT allows reliable quantification of LV function and mass compared with MRI in heart transplant recipients even using 10% interval reconstructions.
    Radiological Society of North America 2009 Scientific Assembly and Annual Meeting; 11/2009
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    ABSTRACT: PURPOSE Traditionally the standard biatrial anastomotic technique has been used for orthotopic heart transplantation (OHT). Two decades ago a new surgical procedure based on bicaval and pulmonary venous anastomoses was introduced to overcome limitations inherent to the classical approach. The aim of this study was to compare cardiac allograft performance using MRI in individuals undergoing OHT with standard and bicaval techniques. METHOD AND MATERIALS Thirty-four consecutive OHT recipients (15 standard, 19 bicaval) underwent cardiac MRI to assess allograft function. Double-oblique 8-mm and axial 5-mm slice thickness images were used to manually trace ventricular and atrial contours, respectively. Ejection fraction (EF), end-diastolic volume (EDV), end-systolic volume (ESV), and stroke volume (SV) were calculated for the ventricles, and EF, EDV, and ESV for the atria. Results were compared using the Mann-Whitney test. RESULTS Ventricular volumes were similar in the two groups except for the left ventricular EDV which was slightly higher in the standard technique subgroup (median 105.3 [35.7] vs. 88.1 [17.1]). Atrial parameters statistically differed (p<0.05). With the standard technique significantly higher EDV and ESV, and lower EF were estimated for the left (median 168.3[68.48], 131.9[68.2], and 20.17[11.2]) and right atrium (median 138.3[85,5], 100.1[64.5], and 24[7.2]) as compared with the bicaval anastomosis procedure (left atrium: median 122.9[48.5], 84.4[42.1], and 27.1[13.8]; right atrium: median 78,1 [30.9], 36.5[10.4], and 48.3[6.7]). CONCLUSION In OHT recipients bicaval anastomosis offers improved atrial performance with respect to the traditional biatrial technique, whereas the surgical procedure does not seem to affect ventricular function. CLINICAL RELEVANCE/APPLICATION In OHT recipients bicaval technique offers improved atrial performance of the cardiac allograft with respect to biatrial anastomosis, as assessed by MRI.
    Radiological Society of North America 2009 Scientific Assembly and Annual Meeting; 11/2009
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    ABSTRACT: Objective To evaluate the potential usefulness of dual-source CT (DSCT) in the diagnostic work-up of inpatients with atypical chest pain of unknown etiology.
    Radiología 11/2009; 51(6). DOI:10.1016/j.rx.2009.06.004
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    ABSTRACT: High-resolution computed tomography (CT) is a validated method to quantify the extent of pulmonary emphysema. In this study, we assessed the reliability of low-dose volumetric CT (LDCT) for the quantification of emphysema and its correlation with spirometric indices of airway obstruction. The study population consisted of 102 consecutive current and former smokers participating in a lung cancer screening trial. All subjects underwent spirometry testing and LDCT at entry and a LDCT after 12 months. The extent of emphysema was estimated by 2 techniques; by using the lung attenuation threshold analysis and by visual assessment of the 2 independent radiologists. The reproducibility of these determinations was assessed using test-retest reliability and kappa coefficient of agreement. The correlation of LDCT-based emphysema determinations with indices of airway obstruction on spirometry was also calculated. Eighty percent of the participants were male, with a mean (standard deviation) age of 54.5 (7.5) years, and median pack-years (interquartile range) of 20 (24). Test-retest reliability of all LDCT-based emphysema determinations was very good (intraclass correlation coefficient of 0.92 for the volume of emphysema, and 0.93 for the emphysema index or emphysema volume/total lung volume). Similarly, there was an excellent interrater agreement for visual assessment of emphysema (kappa coefficient=0.91). Higher volumes of emphysema measured quantitatively or visually significantly correlated with spirometric markers of airway obstruction. Volumetric LDCT is a reliable and valid technique for the quantification of emphysema in asymptomatic smokers.
    Journal of thoracic imaging 09/2009; 24(3):206-11. DOI:10.1097/RTI.0b013e3181a65263 · 1.49 Impact Factor
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    ABSTRACT: To evaluate the potential usefulness of dual-source CT (DSCT) in the diagnostic work-up of inpatients with atypical chest pain of unknown etiology. Forty-one consecutive inpatients (25 male, 16 female; mean age 55.6+/-17.39 years) with atypical chest pain underwent DSCT to determine the cause of pain. Images were acquired with retrospective ECG gating after the administration of 120ml of iodinated contrast medium at 4ml/s using the bolus tracking technique. Two readers analyzed the images in consensus. DSCT was diagnostic in all patients. We detected pulmonary embolisms in five patients and aortic disease in two (one aortic ulcer and one sacular aneurysm). Anomalies of the coronary arteries were depicted in 15 patients, two of whom presented luminal stenosis >50%. Extracardiovascular findings at DSCT included pneumonia in eleven patients, sarcoidosis in one, and non-small cell lung carcinoma in one. Pleural effusion was detected in four patients and pericardial effusion in another four. No pathological findings were observed in 22% of subjects. Evolution was favorable in all patients. No patients were readmitted for persistent pain or new onset of acute chest pain during the follow-up period. DSCT can rule out most life-threatening clinical conditions that cause chest pain and is useful in determining the cause of chest pain in inpatients.
    Radiología 09/2009; 51(6):568-76.
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    ABSTRACT: Objective To evaluate the effect of average heart rate on the quality of images of the coronary arteries and to determine the optimal reconstruction interval in nonselected patients undergoing DSCT coronary imaging.
    Radiología 07/2009; 51(4). DOI:10.1016/j.rx.2008.11.001