Current Issue : July - September Volume : 2020 Issue Number : 3 Articles : 6 Articles
Background: â??Gossypibomaâ? or â??textilomaâ? refers to accidental retention of\ntextile material in an operated area of the body. Abdominal surgery is most\noften responsible for this complication. The purpose of our study was to describe\nthe appearance of abdominal gossypibomas on computed tomography\n(CT) scan images. Materials and Methods: We conducted a retrospective\nstudy over ten years (from January 1, 2009 to December 31, 2018) at the\nTeaching University Hospital of Lomé. We collected all surgically confirmed\ncases of abdominal gossypibomas with abdominal CT scans. Results: Fifteen\ncases were compiled, with a sex-ratio of 0.36. The average age of the patients\nwas 34 years. The initial surgery was emergent in nine of 15 cases, 11 of which\nconsisted of gynecological interventions. The gossypiboma symptom incubation\nperiod was between 3 days and 3 years. A radiopaque marker was observed\nvia CT scans in three of 15 cases. The gossypiboma appeared encapsulated\nand spongiform in six cases and cystic in seven cases. There were two\ncases where the gossypiboma migrated into hollow organs. Conclusion: Abdominal\ngossypibomas appear polymorphic on CT scans and should be considered\nin patients who present with an abdominal mass and a history of abdominal\nsurgery, even for absent radiopaque markers....
Roughly quadrangular, the chiasma presents many morphological variations.\nThe optical chiasm, odd and symmetrical structure of the optical pathways, is\na required passage of the axons of neurons for the visual pathways. Any modification\nof its morphology evokes a pathological process, generally tumoral.\nThe quality of MRI images rivals that of anatomical slices. So the MRI is essential\nfor the study of the chiasma. The aim of this work was to study the\nmorphometry of the optic chiasm in patients addressed for cerebral MRI to\nthe imaging department of the university hospital of the POINT-G, during\nthe period from July 29, to November 30, 2016. All patients who had a normal\nexamination of the optic chiasma, numbering 15, were included in this\nstudy. In 86.66% of cases the chiasma had a quadrilateral form. Its average\nlength was 8.73 mm and its average width was 13 mm. The average thickness\nwas 4.13 mm....
Background: The diagnostic performance of 18F-sodium fluoride positron emission tomography/computed\ntomography (PET/CT) (NaF), 18F-fluorocholine PET/CT (FCH) and diffusion-weighted whole-body magnetic\nresonance imaging (DW-MRI) in detecting bone metastases in prostate cancer (PCa) patients with first biochemical\nrecurrence (BCR) has already been published, but their cost-effectiveness in this indication have never been\ncompared.\nMethods: We performed trial-based and model-based economic evaluations. In the trial, PCa patients with first BCR\nafter previous definitive treatment were prospectively included. Imaging readings were performed both on-site by\nlocal specialists and centrally by experts. The economic evaluation extrapolated the diagnostic performances of the\nimaging techniques using a combination of a decision tree and Markov model based on the natural history of PCa.\nThe health states were non-metastatic and metastatic BCR, non-metastatic and metastatic castration-resistant\nprostate cancer and death. The state-transition probabilities and utilities associated with each health state were\nderived from the literature. Real costs were extracted from the National Cost Study of hospital costs and the social\nhealth insurance cost schedule.\nResults: There was no significant difference in diagnostic performance among the 3 imaging modalities in\ndetecting bone metastases. FCH was the most cost-effective imaging modality above a threshold incremental costeffectiveness\nratio of....................
Background: Left ventricular untwisting generates an early diastolic intraventricular pressure gradient (DIVPG) than\ncan be quantified by echocardiography. We sought to confirm the quantitative relationship between peak\nuntwisting rate and peak DIVPG in a large adult population.\nMethods: From our echocardiographic database, we retrieved all the echocardiograms with a normal left\nventricular ejection fraction, for whom color Doppler M-Mode interrogation of mitral inflow was available, and left\nventricular untwisting rate was measurable using speckle tracking. Standard indices of left ventricular early diastolic\nfunction were assessed by Doppler (peaks E, eâ?? and Vp) and speckle tracking (peak strain rate Esr). Load\ndependency of DIVPG and untwisting rate was evaluated using a passive leg raising maneuver.\nResults: We included 154 subjects, aged between 18 to 77 years old, 63% were male. Test-retest reliability for color\nDoppler-derived DIVPG measurements was good, the intraclass correlation coefficients were 0.97 [0.91â??0.99] and\n0.97 [0.67â??0.99] for intra- and inter-observer reproducibility, respectively. Peak DIVPG was positively correlated with\npeak untwisting rate (r = 0.73, P < 0.001). On multivariate analysis, peak DIVPG was the only diastolic parameter that\nwas independently associated with untwisting rate. Age and gender were the clinical predictive factors for peak\nuntwisting rate, whereas only age was independently associated with peak DIVPG. Untwisting rate and DIVPG were\nboth load-dependent, without affecting their relationship.\nConclusions: Color Doppler-derived peak DIVPG was quantitatively and independently associated with peak\nuntwisting rate. It thus provides a reliable flow-based index of early left ventricular diastolic function....
Purpose: The aim of the present study was to evaluate the patient population,\ndifferent MRI examination protocols and the patientâ??s acceptance of the endorectal\ncoil in the diagnosis of prostate cancer regarding the current discussion\nin PI-RADS v2.1. Material and Methods: In our institute, 256 patients\nwere examined with different protocols and separated into six groups. The\nvalue of the different MRI protocols was identified by analyzing sensitivity,\nspecificity, negative predictive value and positive predictive value. The patient\npopulation was tested for statistically significant differences in their\ncharacteristics to detect a distortion of the results. The patientsâ?? acceptance of\nendorectal coil was evaluated by a query. Results: In total 4.7% of the patients\nwould not recommend a MRI examination because of subjective physical\nstrain and 65.6% of all patients subjectively saw a benefit in the examination\nin regard to an optimal diagnostic process. The protocol groups reached a\nsensitivity from 66.7% - 100%, a specificity from 40% - 75%, a positive predictive\nvalue from 33.3% - 80% and a negative predictive value from 66.7% -\n100%. Conclusion: MRI of the prostate is a safe and comfortable tool with\nhigh sensitivity and negative predictive value and the potential of ruling out a\nclinically significant prostate cancer. However, a general recommendation for\nthe use of biparametric MRI could not be given, considering a higher sensitivity\ncould be performed when using dynamic contrast-enhanced MRI or\nspectroscopy....
Background: Clinical suspicion of cerebral venous sinus thrombosis (CVST) is imprecise due to non-specific\nsymptoms such as headache. The aim was to retrospectively assess the diagnostic value of nonenhanced CT (neCT)\nin patients with nontraumatic headache and clinically suspected CVST.\nMethods: A retrospective consecutive series of patients referred 2013â??2015 for radiology were evaluated. Eligible\npatients had nontraumatic headache and suspicion of CVST stated in the referral, investigated with CT venography\n(CTV) and nonenhanced CT (neCT). neCT scans were re-evaluated for the presence of CVST or other pathology. All\nCTVs were checked for the presence of CVST. The validation cohort consisted of 10 patients with nontraumatic CVT\n(2017â??2019).\nResults: Less than 1% (1/104) had a suspected thrombus on neCT, confirmed by subsequent CTV. The remaining\n99% had a CTV excluding CVST. Eleven percent had other imaging findings explaining their symptoms. In the\npatient with CVST, the thrombosed dural sinus was high attenuating (maximum HU 89) leading to the suspicion of\nCVST confirmed by CTV. The validation cohort (n = 10) confirmed the presence of a high attenuating (HU > 65)\nvenous structure in the presence of a confirmed thrombus in all patients presenting within 10 days (suspicion\nwritten in referral, 10%).\nConclusions: Despite clinical suspicion, imaging findings of CVST in nontraumatic headache are uncommon.\nEvaluating neCT for high attenuation in dural sinuses, followed by CTV for confirmation in selected cases seems\nreasonable. CVST should be recognized by all radiologists and requires a high level of awareness when reading\nneCT for other indications....
Loading....