Volkan Kızılgöz, Mecit Kantarcı, Hüseyin Aydemir
BACKGROUND: Magnetic resonance imaging (MRI) of the cervical spine is one of the routine MRI scans of the cervical region in investigating spinal disc pathologies, spinal stenosis, and the detection of spinal lesions, which are the major parameters to be evaluated in this examination. PURPOSE: The authors of this study are focused on a different aspect of cervical MRI, revealing the incidences and reporting rates of extraspinal incidental findings. METHODS: A total of 1000 patients (324 males, 676 females, mean age 47 ± 14) who had undergone an MRI of the cervical spine were enrolled in this study...
April 2024: Acta Radiologica Open
Toru Chikui, Masahiro Ohga, Yukiko Kami, Osamu Togao, Shintaro Kawano, Tamotsu Kiyoshima, Kazunori Yoshiura
BACKGROUND: Diffusion-weighted imaging (DWI) and dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) are widely used in the orofacial region. Furthermore, quantitative analyses have proven useful. However, a few reports have described the correlation between DWI-derived parameters and DCE-MRI-derived parameters, and the results have been controversial. PURPOSE: To evaluate the correlation among parameters obtained by DWI and DCE-MRI and to compare them between benign and malignant lesions...
March 2024: Acta Radiologica Open
Akram Al-Ibraheem, Ahmed Saad Abdlkadir, Nabeela Al-Hajaj, Aysar Khalaf, Samer Salah
68 Gallium-PSMA positron emission tomography/computer tomography has been utilized recently for the diagnosis and staging of prostate cancer. PSMA is a transmembrane protein that is expressed not only in the prostate gland but also in other tissues. While some pitfalls have been addressed, there are still uncertainties. Herein, we report a 79-year-old male with prostate cancer who underwent a PSMA scan after coronary artery bypass graft surgery, revealing disease progression and PSMA-avid foci at the surgical stitch sites...
February 2024: Acta Radiologica Open
Elena Tonkopi, Mercy Afadzi Tetteh, Catherine Gunn, Haseem Ashraf, Sigrid Lia Rusten, Perkhah Safi, Nora Suu Tinsoe, Kylie Colford, Olivia Ouellet, Salma Naimi, Safora Johansen
BACKGROUND: Low-dose CT (LDCT) chest protocols have widespread clinical applications for many indications; as a result, there is a need for protocol assessment prior to standardization. Dalhousie University and Oslo Metropolitan University have a formally established cooperative relationship. PURPOSE: The purpose is to assess radiation dose and image quality for LDCT chest protocols in seven different hospital locations in Norway and Canada. MATERIAL AND METHODS: Retrospective dosimetry data, volumetric CT dose index (CTDIvol ), and dose length product (DLP) from 240 average-sized patients as well as CT protocol parameters were included in the survey...
January 2024: Acta Radiologica Open
Hiroaki Okada, Nozomu Matsunaga, Takahiro Yamamoto, Masato Yamauchi, Kojiro Suzuki
BACKGROUND: The assessment of small metastatic liver tumours using dual-energy computed tomography (DECT) has not been fully established. PURPOSE: To assess the effect of low-keV virtual monochromatic imaging (VMI) with non-contrast and contrast-enhanced DECT on the qualitative and quantitative image parameters of small liver metastases. MATERIAL AND METHODS: Two radiologists retrospectively evaluated 92 metastatic liver tumours (5-20 mm) in 32 patients...
December 2023: Acta Radiologica Open
Osamu Sato, Tomoya Kotani, Taisei Kanayama, Bunta Tokuda, Kei Yamada
The purpose of this report was to evaluate the usefulness of hyperdense whirl sign on unenhanced computed tomography (CT) for diagnosing gallbladder torsion. The CT scans of seven patients with gallbladder torsion were independently reviewed by two board-certified radiologists for locating the high-density core with twisting between the gallbladder neck and liver bed, termed hyperdense whirl sign. The sign was observed in six cases. The detection of a hyperdense whirl sign on unenhanced CT appears useful for diagnosing gallbladder torsion...
November 2023: Acta Radiologica Open
Felix Busch, Sarah Keller, Christopher Rueger, Avan Kader, Katharina Ziegeler, Keno K Bressem, Lisa C Adams
BACKGROUND: The growing role of artificial intelligence (AI) in healthcare, particularly radiology, requires its unbiased and fair development and implementation, starting with the constitution of the scientific community. PURPOSE: To examine the gender and country distribution among academic editors in leading computer science and AI journals. MATERIAL AND METHODS: This cross-sectional study analyzed the gender and country distribution among editors-in-chief, senior, and associate editors in all 75 Q1 computer science and AI journals in the Clarivate Journal Citations Report and SCImago Journal Ranking 2022...
October 2023: Acta Radiologica Open
Sami Lehtovirta, Victor Casula, Marianne Haapea, Simo Nortunen, Sannamari Lepojärvi, Harri Pakarinen, Miika T Nieminen, Eveliina Lammentausta, Jaakko Niinimäki
BACKGROUND: Early detection of post-traumatic cartilage damage in the ankle joint in magnetic resonance images can be difficult due to disturbances to structures usually appearing over time. PURPOSE: To study the articular cartilage of unilateral Weber type-B/SER-type ankle fractures shortly post-trauma using T2 relaxation time. MATERIAL AND METHODS: Fifty one fractured ankles were gathered from consecutively screened patients, compiled initially for RCT studies, and treated at Oulu University Hospital and classified as stable ( n = 28) and unstable fractures ( n = 23) based on external-rotation stress test: medial clear space of ≥5 mm was interpreted as unstable...
September 2023: Acta Radiologica Open
Janni Jensen, Ole Graumann, Oke Gerke, Trine Torfing, Helle Precht, Benjamin S Rasmussen, Hans B Tromborg
BACKGROUND: Management of the distal radius fracture (DRF) is to some extent based on radiographic characterization of fracture displacement. It remains unclear, however, if the measurements used to quantify displacement are accurate. PURPOSE: To quantify accuracy of two radiographic measurements: dorsal/volar tilt and fracture compression, measured indirectly as ulnar variance (UV), using radiostereometric analyses (RSA) as reference standard. MATERIAL AND METHODS: Twenty-one fresh frozen non-fractured human cadaveric forearms (right = 11, left = 10) were thawed and eligible for inclusion...
September 2023: Acta Radiologica Open
Zaid Al-Difaie, Max Hmc Scheepers, Nicole D Bouvy, Sanne Engelen, Bas Havekes, Alida A Postma
BACKGROUND: Dual-energy computed tomography (DECT) is an advanced imaging method that enables reconstruction of virtual non-contrast (VNC) images from a contrast-enhanced acquisition. This has the potential to reduce radiation exposure by eliminating the need for a true non-contrast (TNC) phase. PURPOSE: The purpose is to evaluate the feasibility of VNC images in the neck region. MATERIALS AND METHODS: A total of 100 patients underwent a DECT scan as part of diagnostic workup of primary hyperparathyroidism...
September 2023: Acta Radiologica Open
Jostein Gleditsch, Øyvind Jervan, Frederikus Klok, René Holst, Einar Hopp, Mazdak Tavoly, Waleed Ghanima
BACKGROUND: Rapid diagnosis and risk stratification are important to reduce the risk of adverse clinical events and mortality in acute pulmonary embolism (PE). Although clot burden has not been consistently shown to correlate with disease outcomes, proximally located PE is generally perceived as more severe. PURPOSE: To explore the ability of the Mean Bilateral Proximal Extension of the Clot (MBPEC) score to predict mortality and adverse outcome. METHODS: This was a single center retrospective cohort study...
June 2023: Acta Radiologica Open
Megan O'Brien, Louisa Oliver, Nick Proctor, Maro Siakantari, Peter Cantin, Colin P Griffin, Ben Stenberg
BACKGROUND: Focal liver lesions (FLL) are abnormal growths that require timely identification. Contrast-enhanced ultrasound (CEUS) is a cost-effective imaging modality for characterising FLL with similar sensitivity to computed tomography (CT) and magnetic resonance imaging (MRI). Despite being recommended by NICE, its adoption within the national health service (NHS) is limited due to low clinical demand, limited referral, and lack of knowledge. PURPOSE: To evaluate the impact of CEUS on patients with incidental FLL and assess the resource implications of introducing CEUS as a diagnostic service within the NHS...
June 2023: Acta Radiologica Open
Shunsuke Nishimura, Koji Yamashita, Osamu Togao, Kazufumi Kikuchi, Daisuke Kuga, Hidetaka Yamamoto, Koji Yoshimoto, Kousei Ishigami
We present a case of the T2-FLAIR mismatch sign in glioblastoma, isocitrate dehydrogenase (IDH )-wild type. The T2-FLAIR mismatch sign is known as a highly specific imaging finding of astrocytoma, IDH -mutant. Meanwhile, IDH -wildtype diffuse astrocytic gliomas with telomerase reverse transcriptase ( TERT ) promoter mutation in adults are defined as glioblastoma in the 2021 World Health Organization Classification of Tumors of the Central Nervous System, fifth edition (2021 WHO classification), which underscores the importance of molecular information in central nervous system tumors...
June 2023: Acta Radiologica Open
José Gerardo Fleiderman Valenzuela, Juan Ignacio Cirillo Totera, Diego Herreros Turkieltaub, Cristóbal Varela Echaurren, Facundo Lisandro Álvarez Lemos, Felipe Ignacio Arriagada Ramos
BACKGROUND: Spinopelvic balance measurement is a key point to get an appropriate diagnosis and treatment in a group of spine pathologies; thus, it seems necessary the evaluation of different methods for obtaining the most reliable values. For that reason, different automatic and semi-automatic computer-assisted tools have been developed, and one example of them is Surgimap. PURPOSE: To demonstrate that the sagittal balance measurements with Surgimap are equal and more time-efficient than with Agfa-Enterprise...
May 2023: Acta Radiologica Open
Shota Tanaka, Rika Yoshida, Mitsunari Maruyama, Shinji Ando, Megumi Nakamura, Tomonori Nakamura, Takeshi Yoshizako
A nontraumatic and idiopathic spontaneous subcapsular hepatic hematoma is a rare but often fatal condition. Herein, we report a case of nontraumatic progressive massive subcapsular hepatic hematoma that straddled both liver lobes and was successfully treated by repeated arterial embolization. Following treatment, the hematoma did not progress.
May 2023: Acta Radiologica Open
Saša Anžej Doma, Andrej Doma
Lymphoplasmacytic lymphoma (LPL)/Waldenström macroglobulinemia (WM) is an uncommon mature B cell lymphoma usually involving the bone marrow and, less commonly, the spleen and/or lymph nodes. This case presents a pathology-confirmed isolated extramedullary relapse of LPL, located in subcutaneous adipose tissue, 5 years after successful treatment of WM.
May 2023: Acta Radiologica Open
Xiaojun Qin, Chun Zeng, Miao Wei, Xian Li, Dongni Qiu
Primary ectopic meningiomas, although widely reported in multiple sites of the body, are particularly rare in the pleura. Here, we report a 35-year-old asymptomatic woman who was found to have a large mass in the right pleural area on physical examination chest radiography. Chest CT scan showed a large irregular mass from the right second anterior costal pleura to the right supradiaphragm, in which calcified plaques of varying sizes were widely and heterogeneously distributed. The mass was connected to the pleura (anterior rib pleura, mediastinal pleura, diaphragmatic pleura) in a wide base, with oblique "Z" changes in the coronal view...
May 2023: Acta Radiologica Open
Hiroyuki Kuroda, Takeshi Yoshizako, Nobuko Yamamoto, Yuko Kataoka, Miki Hyakudomi, Masayuki Itakura, Yasushi Kaji
We present a case of a 35-year-old woman with breast cancer in lactation 3 months after childbirth, in which a lactation inhibitor was useful for 18F-FDG PET/CT examination. Via ultrasonography and biopsy with histopathology, we diagnosed the lesion in the upper region of the left breast as invasive ductal carcinoma. She stopped breastfeeding and was administered cabergoline to suppress lactation. Two days after the administration, 18F-FDG PET/CT revealed segmental uptake (10 cm in diameter) and no lactation-related uptakes...
May 2023: Acta Radiologica Open
Sergio Salerno, Cosimo Nardi, Mario Pace, Lidia Rabiolo, Federica Flammia, Francesco Loverre, Domenica Matranga, Claudio Granata, Paolo Tomà, Stefano Colagrande
BACKGROUND: The newly adopted European directive DE59/2013 mandates adequate patient information in procedures involving ionising radiation. Patient interest in knowing about their radiation dose and an effective communication method for dose exposure remain poorly investigated. PURPOSE: This study is aimed at investigating both patient interest in radiation dose and an effective method to communicate radiation dose exposure. MATERIAL AND METHODS: The present analysis is based on a multi-centre cross-sectional data collection involving 1,084 patients from four different hospitals ‒ two general and two paediatric hospitals...
April 2023: Acta Radiologica Open
Jensen Emma Mathilde Kirkeby, Janni Jensen, Rasmussen S Benjamin, Tromborg B Hans, Ole Graumann
BACKGROUND: Dorsal/volar tilt is an important radiographic measurement commonly included in the treatment decision of distal radius fractures (DRFs). However, studies have shown that forearm positioning relative to rotation (i.e., supination and pronation) can affect the measured tilt value but with substantial interobserver variance. PURPOSE: To examine whether interobserver agreement on radiographic tilt measurement is influenced by forearm rotation. MATERIAL AND METHODS: We radiographed 21 cadaveric forearms at 5° rotational intervals between 15° supination and 15° pronation on lateral radiographs...
April 2023: Acta Radiologica Open
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