Quantitative variations in texture analysis features dependent on MRI scanning parameters: A phantom model.

Quantitative variations in texture analysis features dependent on MRI scanning parameters: A phantom model. J Appl Clin Med Phys. 2018 Oct 27;: Authors: Buch K, Kuno H, Qureshi MM, Li B, Sakai O Abstract OBJECTIVES: To evaluate the influence of MRI scanning parameters on texture analysis features. METHODS: Publicly available data from the Reference Image Database to Evaluate Therapy Response (RIDER) project sponsored by The Cancer Imaging Archive included MRIs on a phantom comprised of 18 25-mm doped, gel-filled tubes, and 1 20-mm tube containing 0.25 mM Gd-DTPA (EuroSpinII Test Object5, Diagnostic Sonar, Ltd, West Lothian, Scotland). MRIs performed on a 1.5 T GE HD, 1.5 T Siemens Espree (VB13), or 3.0 T GE HD with TwinSpeed gradients with an eight-channel head coil included T1WIs with multiple flip angles (flip-angle = 2,5,10,15,20,25,30), TR/TE = 4.09-5.47/0.90-1.35 ms, NEX = 1 and DCE with 30° flip-angle, TR/TE=4.09-5.47/0.90-1.35, and NEX = 1,4. DICOM data were imported into an in-house developed texture analysis program which extracted 41-texture features including histogram, gray-level co-occurrence matrix (GLCM), and gray-level run-length (GLRL). Two-tailed t tests, corrected for multiple comparisons (Q values) were calculated to compare changes in texture features with variations in MRI scanning parameters (magnet strength, flip-angle, number of excitations (NEX), scanner p...
Source: Journal of Applied Clinical Medical Physics - Category: Physics Authors: Tags: J Appl Clin Med Phys Source Type: research

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ConclusionIn breast cancer, D and f values show significant differences according to TSR, and D value is lower in collagen dominant type than in fibroblast dominant or lymphocyte dominant types.
Source: European Journal of Radiology - Category: Radiology Source Type: research
Publication date: September 2019Source: European Urology Supplements, Volume 18, Issue 6Author(s): A. Aydin, C. Kahir, M. Patel, C. Allen, P. Dasgupta
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Authors: Tsai YC, Lee HL, Kuo CC, Chen CY, Hsieh KL, Wu MH, Wen YC, Yu HW, Hsu FC, Tsai JT, Chiou JF Abstract Background: Magnetic resonance-guided focused ultrasound surgery (MRgFUS) is an alternative local therapy for patients with painful bone metastasis. However, little is known about the prognostic and predictive factors of MRgFUS in treating bone metastasis. Materials and methods: This retrospective study analyzed the performance status, treated site, pretreatment pain score, pretreatment tumor volume and lesion coverage volume factor (CVF) of 31 patients who underwent MRgFUS. A numerical rating scale for pai...
Source: International Journal of Hyperthermia - Category: Internal Medicine Tags: Int J Hyperthermia Source Type: research
Conclusions: In MTC patients with increased Ctn and no known distant metastases, F-18-Dopa PET/CT is more sensitive to detect structural disease than any other imaging modality, including WB MRI. PMID: 31530235 [PubMed - as supplied by publisher]
Source: Thyroid : official journal of the American Thyroid Association - Category: Endocrinology Tags: Thyroid Source Type: research
Rebecca Hetherington, now 29, from Newcastle, started to feel unwell in 2013. She was diagnosed with stage two metastatic papillary thyroid cancer on May 17 2016 after a locum GP referred her for a scan.
Source: the Mail online | Health - Category: Consumer Health News Source Type: news
SAN DIEGO - Photon-counting CT scanners might not yet be available for everyday...Read more on AuntMinnie.comRelated Reading: Dedicated breast CT shows promise for cancer screening Photon-counting breast CT shows promise ISCT: New CT detectors promise sharper images NIH begins clinical use of photon-counting CT MDCT: Future CT scanners will deliver more image, less noise
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Authors: Bogowicz M, Vuong D, Huellner MW, Pavic M, Andratschke N, Gabrys HS, Guckenberger M, Tanadini-Lang S Abstract Today, rapid technical and clinical developments result in an increasing number of treatment options for oncological diseases. Thus, decision support systems are needed to offer the right treatment to the right patient. Imaging biomarkers hold great promise in patient-individual treatment guidance. Routinely performed for diagnosis and staging, imaging datasets are excepted to hold more information than used in the clinical practice. Radiomics describes the extraction of a large number of meaningfu...
Source: Quarterly Journal of Nuclear Medicine and Molecular Imaging - Category: Nuclear Medicine Tags: Q J Nucl Med Mol Imaging Source Type: research
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Source: Journal of Applied Clinical Medical Physics - Category: Physics Authors: Tags: J Appl Clin Med Phys Source Type: research
ConclusionsOvarian tissue cryopreservation followed by autotransplantation is an effective method to restore fertility (live birth rate of 57%). The usage rate of 8.7% (6/69) indicates that more knowledge about the risk of premature ovarian insufficiency after gonadotoxic treatment is needed to be able to offer ovarian tissue cryopreservation more selectively.
Source: Acta Obstetricia et Gynecologica Scandinavica - Category: OBGYN Authors: Tags: ORIGINAL RESEARCH ARTICLE Source Type: research
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Source: Clinical and Translational Imaging - Category: Radiology Source Type: research
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