8,761 results match your criteria Acta Radiologica[Journal]


Intravoxel incoherent motion magnetic resonance imaging in predicting IDH1 gene mutations in high-grade gliomas.

Acta Radiol 2021 May 5:2841851211011914. Epub 2021 May 5.

Department of Radiology, Lihuili Hospital of Ningbo Medical Center, Ningbo, Zhejiang, PR China.

Background: Intravoxel incoherent motion (IVIM) magnetic resonance imaging (MRI) has been applied to gliomas; however, the relationships between its parameters and isocitrate dehydrogenase 1 (IDH1) mutations in gliomas remain to be investigated.

Purpose: To investigate the value of IVIM in predicting IDH1 mutations in high-grade gliomas before surgery.

Material And Methods: A total of 72 patients with pathologically confirmed high-grade gliomas underwent conventional brain MRI and IVIM from September 2016 to May 2020. Read More

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Safety and efficacy of right portal vein embolization in patients with prior left lateral liver resection.

Acta Radiol 2021 May 5:2841851211014192. Epub 2021 May 5.

Department of Diagnostic and Interventional Radiology, University Hospital RWTH Aachen, Aachen, Germany.

Background: In patients with bilobar metastatic liver disease, surgical clearance of both liver lobes may be achieved through multiple-stage liver resections. For patients with extensive disease, a major two-staged hepatectomy consisting of resection of liver segments II and III before right-sided portal vein embolization (PVE) and resection of segments V-VIII may be performed, leaving only segments IV ± I as the liver remnant.

Purpose: To describe the outcome following right-sided PVE after prior complete resection of liver segments II and III. Read More

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Thrombectomy of symptomatic isolated occlusions of posterior cerebral arteries in segment P1 and P2 in acute stroke treatment.

Acta Radiol 2021 May 3:2841851211014191. Epub 2021 May 3.

Department of Radiology and Neuroradiology, Knappschaftskrankenhaus Bochum, Germany.

Background: Interventional stroke treatments for occlusions of the posterior circulation are established procedures. However, there are limited data on the treatment of isolated symptomatic P1 and P2 occlusions, which we have examined in this study.

Purpose: To investigate the mechanical thrombectomy of distal posterior occlusions. Read More

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Retrospective evaluation of routine in-hospital observation in 433 patients after CT-guided biopsies.

Acta Radiol 2021 May 3:2841851211011564. Epub 2021 May 3.

Division of Radiology and Nuclear Medicine, Kantonsspital St. Gallen, St. Gallen, Switzerland.

Background: After computed tomography (CT)-guided interventions, routine in-hospital observation is recommended by the Cardiovascular and Interventional Radiological Society of Europe.

Purpose: To evaluate the frequency of delayed major complications or hospitalizations after CT-guided biopsies in patients with initially no or minor complications and to assess whether routine in-hospital observation is justified.

Material And Methods: This retrospective study included 433 outpatients after CT-guided biopsy of the thoracic (n = 176), abdominal (n = 129), or musculoskeletal (n = 128) region with subsequent in-hospital observation. Read More

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Magnetic resonance imaging characteristics of chronic prostatitis in patients under the age of 50: is it more than the eye can see?

Acta Radiol 2021 May 3:2841851211010397. Epub 2021 May 3.

Radiology, Surgical Specialties Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.

Background: The magnetic resonance (MRI) diagnosis of chronic prostatitis (CP) is insufficiently evaluated.

Purpose: To evaluate the MRI appearance of CP in young patients by comparing it to individuals with non-prostatic related pathology.

Material And Methods: The study included 47 patients with prostatitis-like symptoms evaluated by urologists and referred to pelvic MRI examination (mean age=40. Read More

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Feasibility of ultrashort echo time (UTE) T2* cartilage mapping in the hip: a pilot study.

Acta Radiol 2021 Apr 29:2841851211011563. Epub 2021 Apr 29.

Department of Radiology, Division of Physics, New York Presbyterian Hospital - Columbia University Medical Center, New York, NY, USA.

Background: Ultrashort echo time (UTE) T2* is sensitive to molecular changes within the deep calcified layer of cartilage. Feasibility of its use in the hip needs to be established to determine suitability for clinical use.

Purpose: To establish feasibility of UTE T2* cartilage mapping in the hip and determine if differences in regional values exist. Read More

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T1 mapping is useful for staging deep venous thrombosis in the lower extremities.

Acta Radiol 2021 Apr 28:2841851211004425. Epub 2021 Apr 28.

Department of Radiology, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, PR China.

Background: The discrimination of acute and chronic deep venous thrombosis (DVT) is of great importance. Quantitative imaging is an urgent requirement in reflecting intrinsic characteristics of thrombosis.

Purpose: To investigate the feasibility of T1 mapping in staging DVT in the lower extremities. Read More

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Percutaneous transthoracic needle biopsies in immunocompromised hosts with suspicious pulmonary infection: diagnostic yields and complications.

Acta Radiol 2021 Apr 27:2841851211005087. Epub 2021 Apr 27.

Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea.

Background: Pulmonary infection is a major cause of morbidity and mortality in immunocompromised patients, in whom diagnostic yields of cone-beam computed tomography (CBCT)-guided percutaneous transthoracic needle biopsies (PTNBs) have not been evaluated so far.

Purpose: To evaluate diagnostic yields and complications of CBCT-guided PTNBs in immunocompromised patients.

Material And Methods: From January 2015 to January 2018, 43 patients (25 men, 18 women; mean age 54. Read More

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Maintaining immobilization devices on trauma patients during chest and pelvic X-ray: a feasibility study.

Acta Radiol 2021 Apr 27:2841851211008386. Epub 2021 Apr 27.

Trauma Unit, Sørlandet Hospital, Kristiansand, Norway.

Background: Most trauma systems and traumatic spinal injury guidelines mandate spinal stabilization from the site of injury to a radiological confirmation or refutal of spinal injury. Vacuum mattresses have been advocated for patients in need of prehospital spinal stabilization.

Purpose: To investigate the effect of different vacuum mattresses on standard resuscitation bay conventional radiography of chest and pelvis, especially regarding artefacts. Read More

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Occurrence of spontaneous fistulas detected by contrast filling during computed tomography-guided percutaneous drainage placement of splenic and perisplenic fluid collections.

Acta Radiol 2021 Apr 23:2841851211010424. Epub 2021 Apr 23.

Department of Radiology, University Hospital Regensburg, Regensburg, Germany.

Background: Fistulas are serious complications of splenic and perisplenic fluid accumulations, which are often difficult to detect by routine imaging methods.

Purpose: To evaluate the occurrence of spontaneous fistulas detectable during computed tomography-guided percutaneous drainage placement (CTGDP) with contrast filling of splenic or perisplenic fluid collections and to assess characteristics in comparison with perihepatic or peripancreatic fluid accumulations, also being treated with CTGDP.

Material And Methods: In 127 CTGDP-procedures, pre-interventional CTs conducted with intravenous contrast agent were compared to post-interventional CTs including contrast filling of the drain to identify spontaneous fistulas. Read More

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Accuracy of iodine quantification using dual-energy computed tomography with focus on low concentrations.

Acta Radiol 2021 Apr 22:2841851211009462. Epub 2021 Apr 22.

Department of Radiology, Uppsala University Hospital, Sweden.

Background: Iodine quantification using dual-energy computed tomography (DECT) is helpful in characterizing, and follow-up after treatment of tumors. Some malignant masses, for instance papillary renal cell carcinomas (p-RCC), are hard to differentiate from benign lesions because of very low contrast enhancement. In these cases, iodine concentrations might be very low, and it is therefore important that iodine quantification is reliable even at low concentrations if this technique is used. Read More

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Myocardium microcirculation study in a healthy Chinese population using 3.0-T cardiac magnetic resonance intravoxel incoherent motion imaging.

Acta Radiol 2021 Apr 22:2841851211006311. Epub 2021 Apr 22.

Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian City, Liaoning Province, PR China.

Background: Intravoxel incoherent motion imaging (IVIM) can non-invasively evaluate diffusion and microvascular perfusion.

Purpose: To explore the myocardium microcirculation of a healthy Chinese population by using cardiac magnetic resonance (CMR) IVIM.

Material And Methods: A total of 80 healthy volunteers (44 men, 36 women) who underwent 3. Read More

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Patterns of aggressiveness: risk of progression to invasive breast cancer by mammographic features of calcifications in screen-detected ductal carcinoma in situ.

Acta Radiol 2021 Apr 22:2841851211006319. Epub 2021 Apr 22.

Cancer Registry of Norway, Oslo University Hospital, Oslo, Norway.

Background: Mammographic features of calcifications on mammograms showing invasive breast cancer are associated with survival. Less is known about mammographic features and progression to invasive breast cancer among women treated for ductal carcinoma in situ (DCIS).

Purpose: To investigate mammographic features of calcifications in screen-detected DCIS in women who later did and did not get diagnosed with invasive breast cancer. Read More

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Association between cardiovascular risk factors and degenerative disc disease of the thoracolumbar spine in the general population: results from the KORA MRI Study.

Acta Radiol 2021 Apr 20:2841851211010391. Epub 2021 Apr 20.

Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Tübingen, Germany.

Background: Little is known about the associations between cardiovascular risk factors (CRF) and disc degeneration (DD).

Purpose: To evaluate the potential association between CRFs and intervertebral DD in a population-based sample.

Methods: A total of 400 participants from the community-based KORA-study were assessed in terms of CRFs, specifically obesity, hypertension, diabetes, elevated LDL-c, low HDL-c, elevated triglycerides, smoking status, and alcohol consumption. Read More

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Can radiomic analysis of a single-phase dual-energy CT improve the diagnostic accuracy of differentiating enhancing from non-enhancing small renal lesions?

Acta Radiol 2021 Apr 20:2841851211010396. Epub 2021 Apr 20.

Department of Radiology, Duke University Medical Center, Durham, NC, USA.

Background: The value of dual-energy computed tomography (DECT)-based radiomics in renal lesions is unknown.

Purpose: To develop DECT-based radiomic models and assess their incremental values in comparison to conventional measurements for differentiating enhancing from non-enhancing small renal lesions.

Material And Methods: A total of 349 patients with 519 small renal lesions (390 non-enhancing, 129 enhancing) who underwent contrast-enhanced nephrographic phase DECT examinations between June 2013 and January 2020 on multiple DECT platforms were retrospectively recruited. Read More

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Transcatheter arterial embolization for hemorrhage after gynecologic hysterectomy: a multicenter study.

Acta Radiol 2021 Apr 20:2841851211010395. Epub 2021 Apr 20.

Department of Radiology and Research Institute of Radiology, Asan Medical Center, Seoul, Republic of Korea.

Background: Transcatheter arterial embolization (TAE) is not common for hemorrhagic complications after gynecologic hysterectomy.

Purpose: To evaluate the effectiveness and safety of TAE for hemorrhage after hysterectomy for gynecologic diseases.

Material And Methods: This is a retrospective, multicenter study, which investigated 11 patients (median age = 45 years) who underwent TAE for hemorrhage after gynecologic hysterectomy between 2004 and 2020. Read More

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Associations between clinical and imaging findings in posterior ankle impingement syndrome: a systematic review.

Acta Radiol 2021 Apr 19:2841851211008389. Epub 2021 Apr 19.

La Trobe University Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, VIC, Australia.

Background: Posterior ankle impingement syndrome (PAIS) is a common and debilitating condition, commonly affecting people who participate in activities that involve repetitive ankle plantarflexion. The relationship between clinical and imaging findings in PAIS has not been established.

Purpose: To investigate the relationship between clinical and imaging features in PAIS by reviewing the literature comparing symptomatic patients to asymptomatic controls. Read More

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Non-invasive assessment of heterogeneity of gliomas using diffusion and perfusion MRI: correlation with spatially co-registered PET.

Acta Radiol 2021 Apr 15:2841851211006913. Epub 2021 Apr 15.

Department of Nuclear Medicine, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, PR China.

Background: Heterogeneity of gliomas challenges the neuronavigated biopsy and oncological therapy. Diffusion and perfusion magnetic resonance imaging (MRI) can reveal the cellular and hemodynamic heterogeneity of tumors. Integrated positron emission tomography (PET)/MRI is expected to be a non-invasive imaging approach to characterizing glioma. Read More

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Influence of diabetes on diagnostic performance of computed tomography angiography of the calf arteries in acute limb ischemia.

Acta Radiol 2021 Apr 15:2841851211006918. Epub 2021 Apr 15.

Department of Clinical Sciences, Malmö, Lund University, Skåne University Hospital, Malmö, Sweden.

Background: Patients with diabetes mellitus (DM) have a more extensive distal arterial occlusive disease compared to non-diabetic patients. Diagnostic imaging is a necessity to identify the location and extent of the arterial occlusion in acute limb ischemia (ALI). Computed tomography angiography (CTA) is the most commonly used modality and the diagnostic performance with CTA of calf arteries may be questioned. Read More

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Does the primary soft-tissue sarcoma configuration predict configuration of recurrent tumors on magnetic resonance imaging?

Acta Radiol 2021 04 14:2841851211008381. Epub 2021 Apr 14.

Department for Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Campus Kiel, Germany.

Background: Soft-tissue sarcomas (STS) are rare malignancies of the soft tissue.

Purpose: To assess whether the magnetic resonance imaging (MRI) configuration of primary STS can predict the configuration of a recurring tumor and whether the MRI configuration of multiple recurrences differs in one and the same patient.

Material And Methods: Thirty-nine patients with histologically proven recurrent STS were included in this retrospective study and underwent pre- and post-treatment MRI. Read More

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Diagnostic performance of computed tomography and diffusion-weighted imaging as first-line imaging modality according to the International Myeloma Working Group (IMWG) imaging algorithm for monoclonal plasma cell disorders.

Acta Radiol 2021 Apr 14:2841851211008383. Epub 2021 Apr 14.

Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, 65526Asan Medical Center, Seoul, Republic of Korea.

Background: The latest International Myeloma Working Group (IMWG) guideline recommends low-dose whole-body (WB) computed tomography (CT) as the first-line imaging technique for the initial diagnosis of plasma cell disorders.

Purpose: To evaluate diagnostic performances of CT and diffusion-weighted imaging (DWI) as the first-line imaging modalities and assess misclassification rates obtained following the guideline.

Material And Methods: Two independent radiologists analyzed CT (acquired as PET/CT) and DWI (3-T; b-values = 50 and 900 s/mm) of patients newly diagnosed with plasma cell disorder, categorizing the number of bone lesions. Read More

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Percutaneous transcystic removal of gallbladder and common bile duct stones: a narrative review.

Acta Radiol 2021 Apr 12:2841851211006915. Epub 2021 Apr 12.

Department of Upper GI Surgery, 6634University Hospitals Plymouth NHS Trust, Plymouth, UK.

The incidence of gallstone-related complications is rising, thus leading to increases in waiting list times for elective laparoscopic cholecystectomy (LC). Percutaneous cholecystostomy (PC) provides immediate biliary drainage and may be used as an emergency option in a critically unwell patient as a bridge to surgery, or as the management option of a patient who is not fit for surgery. However, a significant number of these patients may be readmitted after PC with recurrent acute cholecystitis or pancreatitis, leading to significant morbidity and mortality. Read More

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International Scientific Prize 2020.

Authors:
Henrik S Thomsen

Acta Radiol 2021 Apr 12:2841851211009822. Epub 2021 Apr 12.

Editor in Chief, Acta Radiologica.

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Different chest CT scoring systems in patients with COVID-19: could baseline CT be a helpful tool in predicting survival in patients with matched ages and co-morbid conditions?

Acta Radiol 2021 Apr 12:2841851211006316. Epub 2021 Apr 12.

University of Health Sciences, Adana City Training and Research Hospital, Department of Radiology, Adana, Turkey.

Background: Computed tomography (CT) gives an idea about the prognosis in patients with COVID-19 lung infiltration.

Purpose: To evaluate the success rates of various scoring methods utilized in order to predict survival periods, on the basis of the imaging findings of COVID-19. Another purpose, on the other hand, was to evaluate the agreements among the evaluating radiologists. Read More

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The prevalence of sacroiliitis on abdominal MRI examinations of patients with Takayasu arteritis.

Acta Radiol 2021 Apr 11:284185121996270. Epub 2021 Apr 11.

Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.

Background: Takayasu arteritis (TA), a systemic large-vessel vasculitis, was reported to have high incidence of spondyloarthropathy.

Purpose: To evaluate the prevalence of inflammatory sacroiliitis in patients with TA that underwent abdominal/pelvic magnetic resonance imaging (MRI) examinations as part of their vasculitis work-up.

Material And Methods: Consecutive abdominal/pelvic MRI examinations of 34 patients with TA fulfilling the 1990 ACR criteria and 34 age- and gender-matched controls performed between 2008 and 2020 were retrospectively reviewed for the presence sacroiliitis. Read More

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Percutaneous retrieval of intravascular foreign body in children: a case series and review.

Acta Radiol 2021 Apr 8:2841851211006904. Epub 2021 Apr 8.

Interventional Radiology, Department of Radiology, Heart Institute (InCor), University of São Paulo, São Paulo, Brazil.

Background: Percutaneous retrieval of intravascular foreign bodies has recently increased as a treatment option.

Purpose: To report our single-center experience of the percutaneous retrieval of 14 intravascular embolized catheter fragments in children and to conduct a literature review.

Material And Methods: MEDLINE databases were searched for case reports and series including children and iatrogenic catheter fragments or guidewires retrieved through percutaneous techniques. Read More

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Effect of "drip-and-ship" and "drip-and-drive" on endovascular treatment of acute ischemic stroke with large vessel occlusion: a single-center retrospective study.

Acta Radiol 2021 Apr 7:2841851211006897. Epub 2021 Apr 7.

Department of Interventional Radiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, PR China.

Background: Patients with acute ischemic stroke (AIS) caused by large vessel occlusion (LVO) were usually transferred from a primary stroke center (PSC) to a comprehensive stroke center (CSC) for endovascular treatment (drip-and-ship [DS]), while driving the doctor from a CSC to a PSC to perform a procedure is an alternative strategy (drip-and-drive [DD]).

Purpose: To compare the efficacy and prognosis of the two strategies.

Material And Methods: From February 2017 to June 2019, 62 patients with LVO received endovascular treatment via the DS and DD models and were retrospectively analyzed from the stroke alliance based on our CSC. Read More

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Gunshot wounds to the head: a comparison of postmortem magnetic resonance imaging, computed tomography, and autopsy.

Acta Radiol 2021 Mar 28:284185121999999. Epub 2021 Mar 28.

Institute of Forensic Medicine and Imaging, University of Zürich, Zürich, Switzerland.

Background: Postmortem imaging has become a powerful diagnostic tool in forensics. Postmortem computed tomography (PMCT) is often used currently to complement and sometimes even replace an autopsy.

Purpose: To compare PMCT, postmortem magnetic resonance imaging (PMMRI), and autopsy findings for gunshot wounds to the head. Read More

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Musculoskeletal symptoms among radiation technologists in Saudi Arabia: prevalence and causative factors.

Acta Radiol 2021 Mar 28:2841851211004428. Epub 2021 Mar 28.

Radiological Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.

Background: Radiation technologists usually perform several physical tasks as part of their work routine that are related to imaging equipment and handling patients. These kinds of physical activities increase their risk of developing musculoskeletal symptoms (MSS).

Purpose: To determine the prevalence and causative factors of MSS among radiation technologists in Saudi Arabia. Read More

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Venous stent versus conventional stent for the treatment of central vein obstruction in hemodialysis patients: a retrospective study.

Acta Radiol 2021 Mar 27:2841851211005163. Epub 2021 Mar 27.

Division of Interventional Radiology, Department of Radiology, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand.

Background: Endovascular treatment is a first-line treatment for upper thoracic central vein obstruction (CVO). Few studies using bare venous stents (BVS) in CVO have been conducted.

Purpose: To evaluate the treatment performance of upper thoracic central vein stenosis between BVS and conventional bare stent (CBS) in hemodialysis patients. Read More

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