Ovarian cancer reporting lexicon for computed tomography (CT) and magnetic resonance (MR) imaging developed by the SAR Uterine and Ovarian Cancer Disease-Focused Panel and the ESUR Female Pelvic Imaging Working Group

Purpose. This study was performed to determine whether diffusion-weighted imaging (DWI) plus unenhanced computed tomography (CT) of the brain increases the diagnostic value of routine magnetic resonance (MR) imaging findings of early-stage glioblastoma. Methods. Postcontrast MR images of eight unenhanced lesions that had been pathologically diagnosed as glioblastoma were retrospectively examined. The location, margin, signal intensity, and attenuation on MR imaging and CT were assessed. Results. On MR imaging, all lesions were ill-defined, small, and isointense to hypointense on T1-weighted images and hyperintense on T2-weighted images. Four patients had perilesional edema. In seven patients, DWI showed an inhomogeneous hyperintense lesion (n = 1) or isointense lesion with a hyperintense region (n = 6). On unenhanced CT, all masses presented as a hypoattenuated lesion with a hyperattenuated region (n = 7) or isoattenuated region (n = 1). The hyperattenuated region (n = 6) or isoattenuated region (n = 1) on CT appeared on DWI as an inhomogeneous hyperintense lesion (n = 1), isointense lesion with a hyperintense region (n = 3), or ring-like peritumoral hyperintensity (n = 3). Conclusions. MR imaging was the most sensitive imaging method for depicting early-stage glioblastoma. The CT finding of a hyperattenuated or isoattenuated region combined with the DWI finding of the same region containing an inhomogeneous hyperintense lesion or isointense lesion with a hyperintense region may be a specific diagnostic sign for early-stage glioblastoma. DWI plus unenhanced CT added diagnostic value to the routine MR imaging findings of early-stage glioblastoma.

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Multifocal Dysembryoplastic Neuroepithelial Tumour with Intradural Spinal Cord Lipomas: Report of a Case

Case Reports in Radiology ◽

10.1155/2011/734171 ◽

2011 ◽

Vol 2011 ◽

pp. 1-4 ◽

Cited By ~ 2

Author(s):

Richard D. White ◽

Avinash K. Kanodia ◽

Esther M. Sammler ◽

John N. Brunton ◽

Craig A. Heath

Keyword(s):

Computed Tomography ◽

Spinal Cord ◽

Magnetic Resonance ◽

Natural History ◽

Mr Imaging ◽

Temporal Lobe Epilepsy ◽

Imaging Findings ◽

History Of ◽

Thoracic Cord ◽

Brown Sequard Syndrome

We report a case of temporal lobe epilepsy and incomplete Brown-Sequard syndrome of the thoracic cord. Computed tomography and magnetic resonance (MR) imaging showed multiple supratentorial masses with the classical radiological appearances of multifocal dysembryoplastic neuroepithelial tumour (DNET). Spinal MR imaging revealed intradural lipomas, not previously reported in association with multifocal DNET. Presentation and imaging findings are discussed along with classification and natural history of the tumour.

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Dural damage due to a loosened hydroxyapatite intraspinous spacer after spinous process–splitting laminoplasty

Journal of Neurosurgery Spine ◽

10.3171/spi-07/08/230 ◽

2007 ◽

Vol 7 (2) ◽

pp. 230-235 ◽

Cited By ~ 24

Author(s):

Atsushi Ono ◽

Toru Yokoyama ◽

Takuya Numasawa ◽

Kanichiro Wada ◽

Satoshi Toh

Keyword(s):

Computed Tomography ◽

Magnetic Resonance ◽

Postoperative Complications ◽

Mr Imaging ◽

Nerve Root ◽

Spinous Process ◽

Imaging Studies ◽

Dural Sac ◽

Neck And Shoulder Pain ◽

Axial Pain

✓Excellent results from laminoplasty for cervical spinal myelopathy have been reported in many studies. Nevertheless, C-5 nerve root palsy or axial pain such as neck and shoulder pain after laminoplasty are known postoperative complications. To the authors' knowledge, dural damage from dislocation of the hydroxyapatite intraspinous spacer due to absorption of the tip of the spinous process has not been reported. Two cases of dural damage from dislocation of the hydroxyapatite intraspinous spacer after laminoplasty are described. Radiographs, computed tomography myelography, and magnetic resonance (MR) imaging revealed the dislocation of the hydroxyapatite intraspinous spacer, the absorption of the tip of the spinous process, and dural sac compression due to the hydroxyapatite intraspinous spacer. In one patient, the MR imaging studies revealed liquorrhea around the hydroxyapatite intraspinous spacers. Both patients underwent removal of the hydroxyapatite intraspinous spacer and attained good neurological recovery. In patients with dislocation of the hydroxyapatite intraspinous spacer associated with absorption of the tip of the spinous process after spinous process–splitting laminoplasty, each case should be evaluated for aggravating symptoms of myelopathy, dural damage, and liquorrhea around the spacer.

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Adrenal Lesions: Spectrum of Imaging Findings with Emphasis on Multi-Detector Computed Tomography and Magnetic Resonance Imaging

Journal of Clinical Imaging Science ◽

10.4103/2156-7514.124088 ◽

2013 ◽

Vol 3 ◽

pp. 61 ◽

Cited By ~ 2

Author(s):

Antonino Guerrisi ◽

Daniele Marin ◽

Mahbubeh Baski ◽

Pietro Guerrisi ◽

Federica Capozza ◽

...

Keyword(s):

Computed Tomography ◽

Magnetic Resonance ◽

Mr Imaging ◽

Hormonal Stimulation ◽

Primary Tumors ◽

Imaging Characteristics ◽

Adrenal Masses ◽

Malignant Lesions ◽

Complementary Techniques ◽

Multi Detector Computed Tomography

The adrenal gland is a common site of a large spectrum of abnormalities like primary tumors, hemorrhage, metastases, and enlargement of the gland from external hormonal stimulation. Most of these lesions represent nonfunctioning adrenal adenomas and thus warrant a conservative management. Multi-detector computed tomography (CT) and magnetic resonance (MR) imaging are still considered highly specific and complementary techniques for the detection and characterization of adrenal abnormalities. Radiologist can establish a definitive diagnosis for most adrenal masses (i.e., carcinoma, hemorrhage) based on imaging alone. Imaging therefore can differentiate malignant lesions from those benign and avoid unnecessary aggressive management of benign lesions. The article gives an overview of the adrenal lesions and their imaging characteristics seen on CT and MR imaging.

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Quantitative Analysis of the Far-Lateral, Supra-Articular Transcondylar Transtubercular Approach Using Cadaveric Computed Tomography and Magnetic Resonance Imaging

Operative Neurosurgery ◽

10.1093/ons/opaa035 ◽

2020 ◽

Vol 19 (5) ◽

pp. E498-E509

Author(s):

Toshiaki Kodera ◽

Ayumi Akazawa ◽

Shinsuke Yamada ◽

Hiroshi Arai ◽

Takahiro Yamauchi ◽

...

Keyword(s):

Computed Tomography ◽

Magnetic Resonance ◽

Mr Imaging ◽

Imaging Study ◽

Lateral Approach ◽

Working Space ◽

Far Lateral Approach ◽

Before And After ◽

Fusion Images ◽

Far Lateral

Abstract BACKGROUND Removing the jugular tubercle (JT) is regarded as an important step in the far-lateral approach; however, few cadaveric studies have objectively evaluated it. OBJECTIVE To quantitatively analyze the effect of JT removal in the far-lateral approach, using cadaveric computed tomography (CT) and magnetic resonance (MR) imaging. METHODS The far-lateral, supra-articular transcondylar transtubercular approach was employed on 23 sides of 13 formalin-fixed cadaveric heads. CT bone images were obtained before and after JT removal, and MR images were obtained before dissection and were merged with the CT bone images. The angles of attack used to approach the ventral region of the medulla, the distances between the medulla and the bony structure, and the volume of the paramedullary space were measured at the level of the JT on axial CT-MR fusion images. The values obtained after JT removal were compared with those obtained before JT removal. RESULTS All evaluated values were significantly increased after JT removal, including the angle of attack at the level of the JT (29.8 ± 7.4° vs 58.2 ± 15.5°, P < .001), the distance between the olive and the JT (6.4 ± 2.0 mm vs 9.5 ± 5.0 mm, P = .01), and the volume of the space around the medulla (0.28 ± 0.04 cm3 vs 0.47 ± 0.09 cm3, P < .001). CONCLUSION The paramedullary surgical working space widened by JT removal was quantitatively demonstrated in the cadaveric CT and MR imaging study. The measurement methods in this study can be applied to clinical cases and other skull base cadaveric studies.

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The Diffusion of Magnetic Resonance Imagers in the United States and Worldwide

International Journal of Technology Assessment in Health Care ◽

10.1017/s0266462300001446 ◽

1985 ◽

Vol 1 (3) ◽

pp. 499-514 ◽

Cited By ~ 11

Author(s):

Earl P. Steinberg ◽

Jane E. Sisk ◽

Katherine E. Locke

Keyword(s):

United States ◽

Computed Tomography ◽

Magnetic Resonance ◽

Mr Imaging ◽

Medical Profession ◽

The United States ◽

Diagnostic Modality ◽

X Ray ◽

X Ray Computed ◽

Ct Scanners

Magnetic resonance (MR) imaging is an exciting new diagnostic modality that has created tremendous interest in the medical profession. Although not unparalleled, the excitement engendered by MR imaging conjures up memories of the “CAT fever” induced by introduction of X-ray computed tomography (CT) scanners in 1973 (19).

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RADIOLOGICAL EVALUATION OF SOFT TISSUE MASSES WITH CLINICO-PATHOLOGICAL CORRELATION

10.36106/paripex/8700164 ◽

2021 ◽

pp. 1-3

Author(s):

J.Abdul Gafoor ◽

B. Suresh ◽

M. Padmalatha ◽

P. Kavitha ◽

Bandaru Mahesh Yadav

Keyword(s):

Computed Tomography ◽

Magnetic Resonance ◽

Soft Tissue ◽

Mr Imaging ◽

Imaging Modalities ◽

Radiological Evaluation ◽

Malignant Tumours ◽

Soft Tissue Tumours ◽

Soft Tissue Masses

Evaluation of soft tissue tumours has undergone a dramatic change with the advent of ultrasonography(USG),magnetic resonance(MR)imaging and computed tomography (CT). Patients are referred for imaging to evaluate a soft tissue lesions in the trunk or extremities.These lesions range from non-neoplastic conditions to benign and malignant tumours. The primary goal for the imaging referral is to confirm the presence of a mass and to assess its extent. And also the study is an attempt to define the role of different imaging modalities in the evaluation of patients with soft tissue tumours in correlation with histopathology.

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Preoperative Staging of Colorectal Cancer — Computed Tomography and Magnetic Resonance Imaging

Scandinavian Journal of Surgery ◽

10.1177/145749690309200106 ◽

2003 ◽

Vol 92 (1) ◽

pp. 35-43 ◽

Cited By ~ 11

Author(s):

L. Blomqvist

Keyword(s):

Magnetic Resonance Imaging ◽

Colorectal Cancer ◽

Computed Tomography ◽

Magnetic Resonance ◽

Mr Imaging ◽

Preoperative Evaluation ◽

Preoperative Staging ◽

Patient Acceptance ◽

Resonance Imaging ◽

New Techniques

Cross-sectional imaging techniques are increasingly being used in the preoperative evaluation of patients with colorectal cancer. Both computed tomography (CT) and magnetic resonance (MR) imaging have been improved with significant advances of the technological hard- and software. This has contributed to high patient acceptance due to shorter examination times and more open configuration of the systems, consistent high quality images with better delineation of the normal abdomino-pelvic anatomy and pathology. New techniques such as CT-colonography have emerged from a research application to a clinical tool which can be used in different clinical settings. Phased-array receiver coils have significantly increased the usefulness of MR in the evaluation of rectal neoplasms due to the high resolution that can be obtained. New organ specific contrast agents for magnetic resonance imaging have facilitated the preoperative evaluation of liver metastases in favour of more invasive techniques with similar sensitivities. However, preoperative staging criteria for colorectal cancer using computed tomography and magnetic resonance imaging has to be updated and the results of new techniques have to be confirmed in large trials. In the future, further development of CT and MR may offer ‘one-stop-shopping’ protocols for both diagnosis, local and distant staging of colorectal cancer. Diffusion weighted MR-imaging, in vivo spectroscopy as well as further targeted imaging, such as with lymph node specific agents for MR may also prove to be helpful in the preoperative evaluation of patients with colorectal cancer.

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Manganese-doped gold core mesoporous silica particles as a nanoplatform for dual-modality imaging and chemo-chemodynamic combination osteosarcoma therapy

Nanoscale ◽

10.1039/d0nr09220g ◽

2021 ◽

Vol 13 (9) ◽

pp. 5077-5093 ◽

Cited By ~ 1

Author(s):

Zhou Sha ◽

Shuguang Yang ◽

Liwen Fu ◽

Mengru Geng ◽

Jiani Gu ◽

...

Keyword(s):

Computed Tomography ◽

Magnetic Resonance ◽

Combination Therapy ◽

Mr Imaging ◽

Mesoporous Silica ◽

Silica Particles ◽

Dual Modality ◽

Prepared Nanoparticles ◽

Gold Core ◽

Dual Modality Imaging

The as-prepared nanoparticles integrate bone targeted chem-chemodynamic combination therapy and dual-modality computed tomography/magnetic resonance (CT/MR) imaging into a single platform.

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