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670 Possible Causes for Arterial Attenuation

  • Pulsus Alternans

    […] with an elevation in pulmonary artery pressure.[ncbi.nlm.nih.gov] Attenuation of pulsus alternans has been rarely reported and may represent further deterioration of ventricular function.[ncbi.nlm.nih.gov] Following coronary angiography in a patient with cardiomyopathy and pulsus alternans, we observed a transient but marked attenuation of the alternation in pulse pressure associated[ncbi.nlm.nih.gov]

  • Cor Pulmonale

    Imaging Studies:Chest x-ray.Chest x-rays show RV and proximal pulmonary artery enlargement with distal arterial attenuation. CT scan of the chest. Echocardiogram.[medigoo.com] Chest x-ray shows RV and proximal pulmonary artery enlargement with distal arterial attenuation.[merckmanuals.com]

  • Purtscher's Retinopathy

    attenuation, venous dilation, and Purtscher flecken.[ncbi.nlm.nih.gov] attenuation, venous dilation, and Purtscher flecken .[journals.lww.com] This pathology may present with optic nerve edema, impaired visual acuity, visual field loss, as well as retinal findings such as cotton-wool spots, retinal hemorrhage, artery[ncbi.nlm.nih.gov]

  • Birdshot Chorioretinopathy

    Both fundi showed evidence of periphlebitis, arterial attenuation, macular edema, and diffuse chorioretinal atrophy.[ncbi.nlm.nih.gov] Both fundi showed evidence of periphlebitis, arterial attenuation, macular edema, and diffuse chorioretinal atrophy.Results:Fluorescein angiography revealed diffuse vascular[scholars.northwestern.edu]

  • Retinitis

    Source: Rett D But as the condition worsens, the vascular demand lessens and starts another classic RP finding: attenuation of the retinal arteries.[healio.com] Ophthalmoscopic examination reveals a yellowish atrophy of the optic nerve, severe arterial attenuation and conspicuous pigment proliferation, which begins in the equatorial[medical-dictionary.thefreedictionary.com] And if the retinal arteries attenuate past a certain point, their tight junctions break down, and the inner retina becomes hypoxic as well, creating attenuation of all layers[healio.com]

  • Hepatocellular Carcinoma

    Hepatic NET metastasis and HCC showed significant differences in arterial attenuation (P   0.003), iodine uptake (P   0.001), NIU (P   0.001), and LPR (P   0.003).[ncbi.nlm.nih.gov] The presence of areas of necrosis, fat and glycogen is responsible for the low values of lesion attenuation (12) .[scielo.br] For each lesion, arterial-phase attenuation values and DECT quantitative parameters, including iodine uptake, fat fraction, normalized iodine uptake (NIU), and lesion-to-liver-parenchyma[ncbi.nlm.nih.gov]

  • Melorheostosis

    […] canal causing attenuation of the left vertebral artery and the second one of mixed sclerosing bony dysplasia (monomelic involvement coexisting with osteopoikilosis).[ijri.org] (C) MR angiogram time-of-flight (TOF) image showing attenuated left vertebral artery (black arrows) and normal right vertebral artery (arrowhead) Click here to view Figure[ijri.org] attenuation on the ipsilateral side [Figure 3] .[ijri.org]

  • Metastasis

    Hepatic NET metastasis and HCC showed significant differences in arterial attenuation (P   0.003), iodine uptake (P   0.001), NIU (P   0.001), and LPR (P   0.003).[ncbi.nlm.nih.gov] For each lesion, arterial-phase attenuation values and DECT quantitative parameters, including iodine uptake, fat fraction, normalized iodine uptake (NIU), and lesion-to-liver-parenchyma[ncbi.nlm.nih.gov] attenuation analysis (sensitivity, 79%; specificity, 80%) (P   0.016).[ncbi.nlm.nih.gov]

  • Pulmonary Embolism

    Clot attenuation at CTPA may be a potential imaging biomarker for predicting pulmonary artery pressure improvement after CDT.[ncbi.nlm.nih.gov] Attenuation measurements on CTPA showed the highest attenuation values in the main pulmonary artery (442.01   187.64).[ncbi.nlm.nih.gov] This study examined the potential correlation between pulmonary embolism (PE) attenuation on computed tomography pulmonary angiography (CTPA) and pulmonary artery hemodynamic[ncbi.nlm.nih.gov]

  • Spinocerebellar Ataxia, Type 2

    Fundus examination showed hypopigmentation and atrophy of the macula, arterial attenuation and straightening, and widespread pigmentary changes involving the midperipheral[journals.lww.com]

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