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Acta Radiologica

Kyoung Doo Song, Hyunchul Rhim, Min Woo Lee, Young-Sun Kim, Tae Wook Kang
BACKGROUND: Intrahepatic distant recurrence (IDR) after radiofrequency (RF) ablation for hepatocellular carcinoma (HCC) is associated with poor overall survival outcome. PURPOSE: To evaluate the incidence and findings on pre-procedural gadoxetic acid-enhanced liver magnetic resonance imaging (MRI) of precursor nodules for IDR after RF ablation for HCC. MATERIAL AND METHODS: This study was approved by our institutional review board. Among 343 patients treated with RF ablation for HCC between 2009 and 2011, 141 patients who underwent pre-procedural gadoxetic acid-enhanced liver MRI and experienced IDR were enrolled...
November 30, 2016: Acta Radiologica
Verena C Obmann, Andreas Christe, Lukas Ebner, Zsolt Szucs-Farkas, Sebastian R Ott, Sai Yarram, Enno Stranzinger
BACKGROUND: Bone subtraction radiography allows reading pulmonary changes of chest radiographs more accurately without superimposition of bones. PURPOSE: To evaluate the value of bone subtraction chest radiography using dual energy (DE) bone subtracted lung images compared to conventional radiographs (CR) in adult patients with cystic fibrosis (CF). MATERIAL AND METHODS: Forty-nine DE radiographs of 24 patients (16 men) with CF (mean age, 32 years; age range, 18-71 years) were included...
November 22, 2016: Acta Radiologica
Anne Sofie F Larsen, Morten B Jacobsen, Jarlis Wesche, Nils Einar Kløw
BACKGROUND: Endovascular treatment (EVT) for intermittent claudication (IC) is performed in selected patients where conservative treatment and training fail. Treatment outcomes reported in vascular registries (survival, limb-survival, and re-intervention rate) are inadequate for low-risk patients with IC. Additional measurements of blood flow reduction and functional impairment clarify the indication for treatment and facilitate outcome evaluation. PURPOSE: To analyze the additional outcome information on peripheral arterial pressures and walking capacity obtained from a local registry of EVT...
November 21, 2016: Acta Radiologica
Stevo Duvnjak, Pernille Ravn, Anders Green, Poul Erik Andersen
BACKGROUND: Uterine fibroid embolization (UFE) is an effective minimally invasive treatment aimed to obtain complete fibroid infarction. PURPOSE: To evaluate the degree of fibroid infarction after embolization with acrylamido polyvinyl alcohol microspheres (Bead Block). MATERIAL AND METHODS: This prospective study included 26 pre-menopausal women in the period October 2013 to January 2015. UFE with the use of Bead Block microspheres 700-900 µm was obtained until flow stasis was achieved...
November 21, 2016: Acta Radiologica
Yasuhiro Fujiwara, Hirotoshi Maruyama, Nobuyuki Kosaka, Yoshiyuki Ishimori
BACKGROUND: Tumor-to-liver contrast is low in images of chronically diseased livers because gadolinium-based hepatocyte-specific contrast agents (Gd-EOB-DTPA) accumulate less to hepatocytes. PURPOSE: To determine whether phase-sensitive inversion recovery (PSIR) could improve the T1 contrasts of Gd-based contrast agents and liver parenchyma and simultaneously provide accurate T1 values for abdominal organs. MATERIAL AND METHODS: The image contrasts of phantoms with different Gd concentrations that were obtained using PSIR were compared to conventional turbo field echo (TFE) results...
November 21, 2016: Acta Radiologica
Recep Sade, Mecit Kantarci, Leyla Karaca, Aylin Okur, Hayri Ogul, Mustafa Keles, Erdem Çankaya, Arif Kursad Ayan
BACKGROUND: Different non-invasive imaging techniques such as Doppler ultrasonography and renal scintigraphy are commonly employed to assess allograft function and associated complications. However, all such methods lack sufficient specificity to discriminate between residual renal function of native kidneys. Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) evaluates signal dynamics during the passage of contrast material through the renal cortex, medulla, and collecting system...
November 18, 2016: Acta Radiologica
Frederik Franz Strobl, Jens Benjamin Schwarz, Sophia Marie Haeussler, Philipp Marius Paprottka, Carsten Rist, Kolja Martin Thierfelder, Stefan Boeck, Volker Heinemann, Maximilian Ferdinand Reiser, Christoph Gregor Trumm
BACKGROUND: In unclear pancreatic lesions, a tissue sample can confirm or exclude the suspected diagnosis and help to provide an optimal treatment strategy to each patient. To date only one small study reported on the outcome of computed tomography (CT) fluoroscopy-guided biopsies of the pancreas. PURPOSE: To evaluate technical success and diagnostic rate of all CT fluoroscopy-guided core biopsies of the pancreas performed in a single university center during a 10-year period...
November 17, 2016: Acta Radiologica
Jeffrey T Jensen, Eva Patil, Jacqueline Seguin, Amy Thurmond
BACKGROUND: Hysterosalpingram (HSG) evaluation of tubal patency is typically performed in the follicular phase, but data to support this timing are lacking. PURPOSE: To determine whether menstrual cycle phase or hormonal treatments affect observation of tubal patency during HSG. MATERIAL AND METHODS: Ten participants underwent repeated HSG examinations: during the follicular and luteal phase of a natural menstrual cycle; 30 days following continuous administration of a combined oral contraceptive (COC); and 30 days after an intramuscular injection of depo medroxyprogesterone (DMPA) acetate...
November 17, 2016: Acta Radiologica
Chonglin Yang, Xiangyang Xu, Mu Hu, Bibo Wang, Yuan Zhu, Jinhao Liu
BACKGROUND: Cobey and Buck described methods to evaluate hindfoot alignment, but it is still unclear which method is better and easier to perform in clinical practice. PURPOSE: To evaluate the optimal method for radiography of hindfoot alignment. MATERIAL AND METHODS: We randomly selected 50 patients visiting the foot and ankle surgery outpatient department who underwent hindfoot alignment radiography between 1 July and 31 August 2015. Radiographs were taken using both Cobey's and Buck's methods...
November 17, 2016: Acta Radiologica
Milva Battaglia, Federica Guaraldi, Davide Gori, Emanuela Castiello, Emanuela Arvat, Alessandra Sudanese
BACKGROUND: Ultrasound-guided percutaneous irrigation of calcific tendinopathy (US-PICT) with intrabursal steroid injection is an elective treatment for painful rotator cuff calcific tendinopathy. PURPOSE: To compare the efficacy of post-US-PICT intrabursal 40 mg injection of triamcinolone acetonide (TA) versus methylprednisolone acetate (MA). MATERIAL AND METHODS: Forty patients (22 women; mean age 48.7 ± 7.2 years) with painful shoulder calcific tendinopathy, treated with TA or MA injected intrabursally after US-PICT, were included in this randomized controlled trial...
November 17, 2016: Acta Radiologica
Athina C Tsili, Alexandra Ntorkou, Dimitrios Giannakis, Nikolaos Sofikitis, Maria I Argyropoulou
BACKGROUND: In humans, the left testis generally hangs lower than the right and the right is larger than the left. Magnetic resonance imaging (MRI) represents an important adjuvant modality in the investigation of testicular diseases. PURPOSE: To assess if normal testes asymmetry is related to apparent diffusion coefficient (ADC) and magnetization transfer ratio (MTR). MATERIAL AND METHODS: The normal testes from 106 men were included. Testicular volume (TV) was calculated by using the ellipsoid formula: length × width × height × 0...
November 17, 2016: Acta Radiologica
Jifei Wang, Meili Sun, Dawei Liu, Xiaoshu Hu, Margaret H Pui, Quanfei Meng, Zhenhua Gao
BACKGROUND: Neoadjuvant chemotherapy has made limb-salvage surgery possible for the patients with osteosarcoma. Diffusion-weighted magnetic resonance imaging (DWI) has been used to monitor chemotherapy response. PURPOSE: To correlate the apparent diffusion coefficient (ADC) values with histopathology subtypes of osteosarcoma after neoadjuvant chemotherapy. MATERIAL AND METHODS: Twelve patients with osteoblastic (n = 7), chondroblastic (n = 4), and fibroblastic (n = 1) osteosarcomas underwent post-chemotherapy DWI before limb-salvage surgery...
November 16, 2016: Acta Radiologica
Yoonah Song, Jong Won Kwon
BACKGROUND: Sternal lesions are occasionally seen in clinical practice and their diagnosis can be important, especially for oncologic patients. However, percutaneous computed tomography (CT)-guided biopsy of sternal lesions is rarely performed. PURPOSE: To assess the diagnostic yield of percutaneous CT-guided sternal biopsies and to analyze the factors that affect diagnostic yield. MATERIAL AND METHODS: A retrospective review of 34 patients who underwent CT-guided sternal biopsy was carried out at a single institution...
November 16, 2016: Acta Radiologica
Thula C Walter, Gesine Knobloch, Sima Canaan-Kuehl, Andreas Greiser, Anja Sandek, Daniela Blaschke, Timm Denecke, Bernd Hamm, Marcus R Makowski
BACKGROUND: Anderson-Fabry disease (AFD) is an X-linked lysosomal enzyme disorder associated with an intracellular accumulation of sphingolipids, which shorten myocardial T1 relaxation times. Myocardial affection, however, varies between different segments. PURPOSE: To evaluate the specific segmental distribution and degree of segmental affection in AFD patients. MATERIAL AND METHODS: Twenty-five patients with AFD, 14 patients with hypertrophic cardiomyopathy (HCM), and 21 controls were included...
October 31, 2016: Acta Radiologica
Seyedmehid Payabvash, Shayandokht Taleb, John C Benson, Benjamin Hoffman, Mark C Oswood, Alexander M McKinney, Jeffrey B Rykken
BACKGROUND: Recent studies have suggested a correlation between susceptibility-diffusion mismatch and perfusion-diffusion mismatch in acute ischemic stroke patients. PURPOSE: To determine the clinical and imaging associations of susceptibility-diffusion mismatch in patients with acute ischemic stroke in the middle cerebral artery (MCA) territory. MATERIAL AND METHODS: Consecutive patients with MCA territory acute ischemic stroke, who had magnetic resonance imaging (MRI) performed with susceptibility-weighted imaging (SWI) and diffusion-weighted imaging (DWI) within 24 h of symptom onset or time last-seen-well, were included...
October 31, 2016: Acta Radiologica
Ishan Kumar, Ashish Verma, Manjari Matah, Gayatri Satpathy
BACKGROUND: Post-Caesarean uterine scar rupture during vaginal birth after Caesarean section (VBAC) is a potentially life-threatening complication. Prediction of scar dehiscence and scar rupture is vital in treatment planning and selecting candidates of trial of labor after a Caesarean section (CS). PURPOSE: To assess the accuracy of magnetic resonance imaging (MRI) for evaluation of post-Caesarean uterine scar and to predict scar dehiscence during repeat CS. MATERIAL AND METHODS: Thirty patients with a history of at least one previous CS underwent pelvic MRI for assessment of uterine scar during a subsequent gestation, all of whom underwent lower segment Caesarean section (LSCS) subsequently due to one of the established indications of CSs...
October 31, 2016: Acta Radiologica
Canan Cimsit, Tevfik Yoldemir, Derya Tureli, Mustafa Erkin Aribal
BACKGROUND: Pelvic congestion syndrome (PCS) is a commonly overlooked condition which is a potential cause of chronic pelvic pain. Magnetic resonance imaging (MRI) of the sacroiliac joint (SIJ) may demonstrate unexpected conditions that can mimic sacroiliitis (SI). Awareness of MRI-defined pelvic venous congestion (PVC) may help in identifying PCS, where vascular abnormality may be the sole manifestation of SIJ pain. PURPOSE: To detect incidental MRI-defined PVC in patients who underwent SIJ-MRI for presumed SI and define the variance of its incidence...
October 31, 2016: Acta Radiologica
Tuncay Kiris, Selçuk Yazıcı, Ali Koc, Cinar Köprülü, Zehra Ilke Akyildiz, Mustafa Karaca, Cem Nazli, Abdullah Dogan
BACKGROUND: Pulmonary embolism (PE) is a common and life-threatening condition associated with considerable morbidity and mortality. Pleural effusion occurs in about one in three cases; however, data on its prognostic value are scarce. PURPOSE: To investigate the association between pleural effusion and both 30-day and long-term mortality in patients with acute PE. MATERIAL AND METHODS: We retrospectively evaluated 463 patients diagnosed with acute PE using computed tomography pulmonary angiography (CTPA)...
October 31, 2016: Acta Radiologica
Tetsuya Katsumori, Hiroshi Miura, Hisatomi Arima, Akihiko Hino, Yusuke Tsuji, Yoko Masuda, Takeshi Nishimura
BACKGROUND: Tris-acryl gelatin microspheres (TAGM) and gelatin sponge particles (GS) have been used in uterine artery embolization (UAE) for leiomyoma. No direct comparisons of both embolic agents have been reported. PURPOSE: To compare the outcomes of UAE with TAGM with those of UAE with GS for uterine leiomyoma. MATERIAL AND METHODS: This was a non-randomized, single-institute, non-inferiority study. Between July 2008 and August 2015, 67 consecutive patients with symptomatic leiomyoma underwent UAE...
October 31, 2016: Acta Radiologica
Meylin Caballeros, Pablo Bartolomé, Óscar Fernández González, Andreas Greiser, Loreto García Del Barrio, Jesús Pueyo, Gorka Bastarrika
BACKGROUND: Diffuse myocardial fibrosis can be quantified by calculating extra-cellular volume (ECV) from native and post-contrast T1 values using dedicated single bolus contrast medium injection protocols. PURPOSE: To evaluate differences in T1 maps and myocardial ECV measurements in routine stress/rest perfusion cardiovascular magnetic resonance (CMR) examinations after injection of single and double dose of contrast medium. MATERIAL AND METHODS: Thirty-seven consecutive patients (30 men; mean age, 62 ± 13 years) underwent clinically indicated adenosine stress/rest perfusion CMR examination to rule out myocardial ischemia following a conventional split-dose contrast medium injection strategy...
October 28, 2016: Acta Radiologica
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