Preliminary study on the differentiation between parapelvic cyst and hydronephrosis with non-calculous using only pre-contrast dual-energy spectral CT scans
| Autor: | Chenglong Ren, Chen Shen, Jieli Zhou, Taiping He, Dong Han, Guangming Ma, Lequn Wei |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Radiography Contrast Media Hydronephrosis Kidney Sensitivity and Specificity 030218 nuclear medicine & medical imaging Pre contrast Diagnosis Differential Radiography Dual-Energy Scanned Projection 03 medical and health sciences Young Adult 0302 clinical medicine Ct number medicine Humans Radiology Nuclear Medicine and imaging Cyst Aged Retrospective Studies Aged 80 and over Dual energy Full Paper business.industry Reproducibility of Results Urography General Medicine Kidney Diseases Cystic Middle Aged medicine.disease 030220 oncology & carcinogenesis Radiographic Image Interpretation Computer-Assisted Female Tomography Radiology business Nuclear medicine Tomography X-Ray Computed Pyelogram |
| Popis: | To investigate the value of using the quantitative parameters from only the pre-contrast dual-energy spectral CT imaging for distinguishing between parapelvic cyst and hydronephrosis with non-calculous (HNC).This retrospective study was approved by the institutional review board. 28 patients with parapelvic cyst and 24 patients with HNC who underwent standard pre-contrast and multiphase contrast-enhanced dual-energy spectral CT imaging were retrospectively identified. The parapelvic cyst and HNC were identified using the contrast-enhanced scans, and their CT number in the 70-keV monochromatic images, effective atomic number (ZThe CT numbers in the 70-keV images, ZThe quantitative parameters obtained in the pre-contrast dual-energy spectral CT imaging may be used to differentiate between parapelvic cyst and HNC. Advances in knowledge: The pre-contrast dual-energy spectral CT scans may be used to screen parapelvic cysts for patients who are asymptomatic, thereby avoiding contrast-enhanced CT or CT urography examination for these patients to reduce ionizing radiation dose and contrast dose. |
| Databáze: | OpenAIRE |
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