Colour-coded density-gradients stone mapping: A novel reporting system for stone density on non-contrast computed tomography and its clinical applications
| Autor: | Mohamed Adel Atta, Hussein M. Abdeldaeim, Mohamed Mohie Hashad, Mohamed Samir Shabaan |
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| Rok vydání: | 2020 |
| Předmět: |
030219 obstetrics & reproductive medicine
medicine.diagnostic_test business.industry Urology media_common.quotation_subject Non contrast ct Attenuation colour coding 030232 urology & nephrology Colour coding Computed tomography density gradients Non-contrast CT 03 medical and health sciences 0302 clinical medicine Stones / Endourology Medicine Contrast (vision) stones business Nuclear medicine Reporting system Research Article media_common |
| Zdroj: | Arab Journal of Urology article-version (VoR) Version of Record |
| ISSN: | 2090-598X |
| DOI: | 10.1080/2090598x.2020.1784601 |
| Popis: | Objective To presents a novel clinically oriented system to report stone attenuation on non-contrast computed tomography (NCCT) using colour-coded density-gradients stone mapping and its clinical applications. Patients and methods This study was performed on 50 patients with 63 stones. All patients had a recent history of failed shockwave lithotripsy (SWL) or failed dissolution therapy by alkalinisation of urine for radiolucent stones. A multi-detector NCCT examination of the abdomen and pelvis was performed in all patients. The stones were isolated and displayed in ‘Volume Rendering Technique’ using four-colour encoding. Results Eight patients with failed dissolution therapy for radiolucent stones showed an outer layer of >500 Hounsfield units (HU) or a heterogeneous composition. A total of 42 patients with failed SWL had mean attenuations of 1000 HU) that failed to be clearly demonstrated by the mean HU alone. Conclusion The initial use of a colour-coded density-gradients stone mapping reporting system for stone density on NCCT is useful for explaining failure of SWL or failure of dissolution therapy for radiolucent stones in selected cases. Abbreviations: HU: Hounsfield units; MSD: mean stone density; NCCT: non-contrast computed tomography; PCNL: percutaneous nephrolithotomy; SWL: shockwave lithotripsy; VRT: Volume Rendering Technique |
| Databáze: | OpenAIRE |
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