Acta Radiologica Short Reports最新文献

{"title":"Quantification of cerebral circulation and shunt volume in a tentorial dural arteriovenous fistula using two-dimensional phase-contrast magnetic resonance imaging.","authors":"Sung Won Youn,&nbsp;Ho Kyun Kim,&nbsp;Hui Joong Lee,&nbsp;Jongmin Lee","doi":"10.1177/2047981614536559","DOIUrl":"https://doi.org/10.1177/2047981614536559","url":null,"abstract":"<p><p>Venous hypertension is closely related to poor outcome of a dural arteriovenous fistula (DAVF). However, no direct measurements have been made of the shunt flow and impaired venous drainage that are suggestive of venous hypertension. We present a case of a 35-year-old man who presented with cerebral hemorrhage and underwent coil embolization for tentorial DAVF. Two-dimensional (2D) phase-contrast magnetic resonance imaging (MRI) was used to evaluate temporal changes in the flow volumes of the shunt and venous drainage between before and after embolization. The results demonstrated the feasibility of using 2D phase-contrast MRI to measure the shunt volume of a DAVF, which might be useful for assessing the improvement in cerebral circulation after embolization treatment. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 5","pages":"2047981614536559"},"PeriodicalIF":0.0,"publicationDate":"2014-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981614536559","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32732929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caval variations in neurologically diseased patients.","authors":"Rachael A Akinola,&nbsp;Olufemi E Idowu,&nbsp;Adedolapo O Nelson-Paseda","doi":"10.1177/2047981614530288","DOIUrl":"https://doi.org/10.1177/2047981614530288","url":null,"abstract":"<p><strong>Background: </strong>The import of the cavum variation and its prevalence rate in healthy individuals is still not clear, likewise in neurologically diseased patients.</p><p><strong>Purpose: </strong>To evaluate the frequency and pattern of caval variations in neurologically diseased patients.</p><p><strong>Material and methods: </strong>The presence or absence of the cavum septum pellucidum (CSP), cavum vergae (CV), or cavum velum interpositum (CVI) was reviewed from successive cranial computerized tomography (CT) images of patients who were aged 6 months and above. Two hundred and seventeen cranial CT images were reviewed.</p><p><strong>Results: </strong>At least a cavum variation was noted in 130 (59.9%) of the CT scan images reviewed. The CV, CVI, and CSP were noted in 86 (39.6%), 53 (24.4%), and 50 images (23%), respectively. Caval multiplicity was noted in 102 patients (47%). There was no significant difference in the rate of occurrence of cavum variations in patients with congenital brain diseases and acquired brain conditions (P = 0.484), neither was there a significant difference in the frequency of cavum variation in children aged older than 6 months compared to adults (P = 0.101).</p><p><strong>Conclusion: </strong>Cava variations are relatively common in neurological brain diseases. Patients with congenital brain diseases did not have a higher frequency of cava variation when compared with those that had acquired lesions. The most common type of cavum variation noted in this study was the vergae variety, while the CSP is the rarest.</p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 5","pages":"2047981614530288"},"PeriodicalIF":0.0,"publicationDate":"2014-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981614530288","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32732926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Economically affordable anatomical kidney phantom with calyxes for puncture and drainage training in interventional urology and radiology.","authors":"Asko Ristolainen,&nbsp;Peeter Ross,&nbsp;Juri Gavšin,&nbsp;Eero Semjonov,&nbsp;Maarja Kruusmaa","doi":"10.1177/2047981614534231","DOIUrl":"https://doi.org/10.1177/2047981614534231","url":null,"abstract":"<p><strong>Background: </strong>Trends in interventional radiology and urology training are orientated towards reducing costs and increasing efficiency. In order to comply with the trends, we propose training on inexpensive patient-specific kidney phantoms.</p><p><strong>Purpose: </strong>To develop a new kidney phantom for puncture and drainage training in interventional urology and radiology, and to evaluate their anatomical correctness and suitability for training compared to the traditional way of training on home-made phantoms.</p><p><strong>Material and methods: </strong>A CASE STUDY FOR VALIDATION OF KIDNEY PHANTOMS WAS CONDUCTED WITH NINE RADIOLOGY STUDENTS DIVIDED INTO TWO GROUPS: one trained on standard home-made training phantom (n = 4) and the other on our kidney phantoms (n = 5). Another test phantom was used to evaluate the effectiveness of the training of the two groups. The tests were video recorded and analyzed. Duration of the procedure was used as the primary indicator of procedure's quality. Comparison tests were also conducted with professional radiologists. Anatomical correctness of the kidney phantom was evaluated by comparing the post mortem kidney scans with reconstructed models from CT scans. Subjective feedback was also collected from the participants. Wider use of kidney phantoms was analyzed.</p><p><strong>Results: </strong>The average volumetric difference between post mortem kidney scans and reconstructed CT kidney models was 4.70 ± 3.25%. All five students practicing on the kidney phantom improved their performance and the results were almost equal to the results of the professional radiologist while in the other group two students out of four trained on standard home-made training phantoms failed to improve their performance. However, the small number of test subjects prevents us from drawing general conclusions about the efficiency of the new practice. The kidney phantoms were found usable also for nephrostomy catheter placement training under fluoroscopy.</p><p><strong>Conclusion: </strong>The feedback from radiologists showed that the anatomically correct features of the phantom is an added value for the training and has a potential to increase the quality of minimally invasive procedures in general.</p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 5","pages":"2047981614534231"},"PeriodicalIF":0.0,"publicationDate":"2014-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981614534231","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32732927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A longitudinal VBM study monitoring treatment with erythropoietin in patients with Friedreich ataxia.","authors":"Wolfram Santner,&nbsp;Michael Schocke,&nbsp;Sylvia Boesch,&nbsp;Wolfgang Nachbauer,&nbsp;Karl Egger","doi":"10.1177/2047981614531573","DOIUrl":"https://doi.org/10.1177/2047981614531573","url":null,"abstract":"Background Recombinant human erythropoietin (rhuEPO) has received considerable attention because of its neuroprotective properties. It has recently been reported that rhuEPO increases frataxin levels in combination with clinical improvement in rhuEPO treated patients with Friedreich ataxia (FRDA). Purpose To determine possible therapy dependent intracranial volume changes after treatment with rhuEPO using voxel-based morphometry (VBM). Material and Methods Nine FRDA patients were scanned on the same 1.5-Tesla MRI scanner before and after treatment with rhuEPO. FRDA patients received 5000 IU rhuEPO thrice weekly subcutaneously for a time period of 8 weeks followed by 2000 IU thrice weekly over 6 months. To test for re-test reliability a control group of 12 healthy volunteers were scanned twice on the same scanner without rhuEPO treatment. Neurological state was defined by the Friedreich Ataxia Rating Scale (FARS) and the Scale for the Assessment and Rating of Ataxia (SARA). Statistical parametric mapping software was used for image processing and statistical analysis. Results When comparing follow-up scans after rhuEPO treatment with baseline scans (P <0.001 uncorrected) an increase of gray matter volume was observed bilaterally in the Pulvinar and the posterior parietal cortex. Moreover, clinical improvement detected using specific Ataxia scores correlated with VBM results in the pulvinar. Conclusion Given the limitation of a small sample size, our study confirms previous findings that MRI may serve as reliable biomarker in neurodegenerative diseases as well as in monitoring of microstructural changes representing disease progression and/or therapy effects.","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 4","pages":"2047981614531573"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981614531573","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32732925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vertebral metastases from intracranial meningioma.","authors":"H Zaghouani,&nbsp;S Yahyaoui,&nbsp;I Chabchoub,&nbsp;N Mallat,&nbsp;S Majdoub,&nbsp;H Amara,&nbsp;D Bakir,&nbsp;S Badreddine,&nbsp;C Kraiem","doi":"10.1177/2047981613494199","DOIUrl":"https://doi.org/10.1177/2047981613494199","url":null,"abstract":"<p><p>Meningioma rarely gives rise to metastases outside the brain and meninges. We report here a case of a patient who was treated for anaplastic brain meningioma with surgery and fractionated radiation therapy without any recurrence until 5 years after the operation, when she developed vertebral metastases. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 4","pages":"2047981613494199"},"PeriodicalIF":0.0,"publicationDate":"2014-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613494199","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32732448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tumor regression of multiple bone metastases from breast cancer after administration of strontium-89 chloride (Metastron).","authors":"Joichi Heianna,&nbsp;Takaharu Miyauchi,&nbsp;Wataru Endo,&nbsp;Naoki Miura,&nbsp;Kazuyuki Terui,&nbsp;Syuichi Kamata,&nbsp;Manabu Hashimoto","doi":"10.1177/2047981613493412","DOIUrl":"https://doi.org/10.1177/2047981613493412","url":null,"abstract":"<p><p>We report a case of tumor regression of multiple bone metastases from breast carcinoma after administration of strontium-89 chloride. This case suggests that strontium-89 chloride can not only relieve bone metastases pain not responsive to analgesics, but may also have a tumoricidal effect on bone metastases. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 4","pages":"2047981613493412"},"PeriodicalIF":0.0,"publicationDate":"2014-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613493412","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32732446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An unusual case of primary hepatic lymphoma mimicking sarcoidosis in MRI.","authors":"Thuy D Do,&nbsp;Claus Neurohr,&nbsp;Marlies Michl,&nbsp;Maximilian F Reiser,&nbsp;Christoph J Zech","doi":"10.1177/2047981613493625","DOIUrl":"https://doi.org/10.1177/2047981613493625","url":null,"abstract":"<p><p>Sarcoidosis is a granulomatous disease, in which liver affection is common, contrary to a primary hepatic lymphoma that is very rarely seen. On MRI both present with almost the same imaging features: hypointense in T1-weighted and hyperintense in T2-weighted sequences. Our patient with a histologically confirmed sarcoidosis in the lungs showed liver lesions that were similar to sarcoidosis manifestations of the liver. Due to size, progression and overlapping features with secondary malignant liver lesions within an interval of 5 months, a biopsy was conducted and confirmed a primary hepatic lymphoma with diffuse large b-cells. Thus, we would recommend performing a biopsy in ambiguous lesions with indistinguishable characteristics and progression within a short follow-up interval. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 4","pages":"2047981613493625"},"PeriodicalIF":0.0,"publicationDate":"2014-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613493625","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32732447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Superselective splenic artery embolization for the management of splenic laceration following colonoscopy.","authors":"Ian M Brennan,&nbsp;Salomao Faintuch,&nbsp;Barry Sacks","doi":"10.1177/2047981614524199","DOIUrl":"https://doi.org/10.1177/2047981614524199","url":null,"abstract":"<p><p>Splenic injury is a rare complication following colonoscopy with fewer than 100 reported cases worldwide to date. We describe a case of splenic laceration presenting 5 days following diagnostic colonoscopy. Although hemodynamically stable, active contrast extravasation on contrast-enhanced multidetector computed tomography predicted likely failure of conservative management. Splenic artery angiography confirmed active extravasation from the lower splenic pole and the patient was successfully treated with super selective coil embolization of a lower pole splenic artery branch. This is the eighth reported case of endovascular treatment of splenic injury following colonoscopy. To our knowledge, however, superselective splenic artery embolization has not been previously reported to treat this rare endoscopic complication. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 3","pages":"2047981614524199"},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981614524199","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32732445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mandibular tori as an incidental finding in MRI.","authors":"Ivan Platzek,&nbsp;Marika Schubert,&nbsp;Dominik Sieron,&nbsp;Michael Laniado","doi":"10.1177/2047981614522790","DOIUrl":"https://doi.org/10.1177/2047981614522790","url":null,"abstract":"<p><strong>Tori (singular: </strong>torus) are among the most common benign jaw lesions. The magnetic resonance imaging (MRI) characteristics have not been reported yet. We present a 72-year-old patient with mandibular tori, which were detected as an incidental finding on MRI and provide an overview of the imaging features of tori.</p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 2","pages":"2047981614522790"},"PeriodicalIF":0.0,"publicationDate":"2014-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981614522790","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32300270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic resonance imaging in acute mastoiditis.","authors":"Ivan Platzek,&nbsp;Hagen H Kitzler,&nbsp;Volker Gudziol,&nbsp;Michael Laniado,&nbsp;Gabriele Hahn","doi":"10.1177/2047981614523415","DOIUrl":"https://doi.org/10.1177/2047981614523415","url":null,"abstract":"<p><strong>Background: </strong>In cases of suspected mastoiditis, imaging is used to evaluate the extent of mastoid destruction and possible complications. The role of magnetic resonance imaging (MRI) in mastoiditis has not been systematically evaluated.</p><p><strong>Purpose: </strong>To assess the diagnostic performance of MRI in patients with suspected acute mastoiditis.</p><p><strong>Material and methods: </strong>Twenty-three patients with suspected acute mastoiditis were included in this retrospective study (15 boys, 8 girls; mean age, 2 years 11 months). All patients were examined on a 1.5 T MRI system. The MRI examination included both enhanced and non-enhanced turbo spin echo (TSE), diffusion-weighted images, and venous time-of-flight magnetic resonance angiography (TOF MRA) for the evaluation of the venous sinuses. Surgical findings, as well as clinical and imaging follow-up were used as the standard of reference. The sensitivity and accuracy of MRI for mastoiditis and subperiosteal abscesses was calculated.</p><p><strong>Results: </strong>Twenty (87%) of 23 patients had mastoiditis, and 12 (52%) of 23 patients had a subperiosteal abscess in addition to mastoiditis. Mastoiditis and subperiosteal abscesses were identified by MRI in all cases. Sensitivity for mastoiditis was 100%, specificity was 66%, and accuracy was 86%. Sensitivity for subperiosteal abscesses was 100% and accuracy was 100%.</p><p><strong>Conclusion: </strong>Multiparametric MRI has high accuracy for mastoiditis and subperiosteal abscesses.</p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 2","pages":"2047981614523415"},"PeriodicalIF":0.0,"publicationDate":"2014-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981614523415","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32300272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}