Evaluation of the computed tomography number for water, field uniformity, image noise and contrast resolutions in Kano Metropolis, Nigeria

Sidi, Mohammed; Hussain, Usman Yahaya; Ya’u, Anas; Garba, Ibrahim

doi:10.4103/njbcs.njbcs_10_20

Cited by 3 publications

(1 citation statement)

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“…These findings imply ultrasound equipment in the study area were most likely been operated without a routine quality assurance plan in place which may probably undermine the quality of images produced by the equipment and the subsequent inference derived from such images, thereby increasing the risk of inappropriate diagnosis. Routine QC ensures that the equipment is operating at optimal operational condition, thereby providing the required diagnostic information [25]. There is increasing evidence in the literature of the efficacy of formal QA programmes in identifying more subtle deterioration of ultrasound imaging performance [18].…”

Section: Discussionmentioning

confidence: 99%

The current status of ultrasound practice in Kano metropolis, Nigeria

Sidi

Sani

Ya’u

et al. 2021

Egypt J Radiol Nucl Med

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Background Ultrasound has been in clinical use to image the human body for over half a century. An audit should be performed on professional practice aimed at taking corrective measures where errors are identified and improvement in the practice when errors are not detected. This study is aimed at evaluating the current status of ultrasound practice in Kano metropolis, Nigeria. Results Out of the 70 (100%) administered questionnaires, 68 (97.14%) were returned, and 64 (91.43%) were properly filled. Fifty-eight (90.6%) knew the exact meaning of ultrasound, and 34 (53%) considered ultrasound as a modality of choice for imaging and diagnosis of abdominal masses. None of the participants was exposed to advanced ultrasound technology. Only 3 (4.7%) and 5 (7.8%) of the respondents performed infection control, air reverberation pattern and electronic noise checks. Conclusion Ultrasound practitioners demonstrate good knowledge of ultrasound and its application. However, there was unavailability of advanced ultrasound equipment. There was also poor understanding and practice of quality assurance among practitioners. Ultrasound equipment might have been grossly underutilized and qualities of images produced by the equipment are not certain were optimal.

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Section: Discussionmentioning

confidence: 99%

The current status of ultrasound practice in Kano metropolis, Nigeria

Sidi

Sani

Ya’u

et al. 2021

Egypt J Radiol Nucl Med

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HU-based material conversion for BNCT accurate dose estimation

Teng,

Chen,

Zhong

et al. 2023

Sci Rep

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NeuMANTA is a new generation boron neutron capture therapy (BNCT)-specific treatment planning system developed by the Neuboron Medical Group and upgraded to an important feature, a Hounsfield unit (HU)-based material conversion algorithm. The range of HU values was refined to 96 specific groups and established corresponding to tissue information. The elemental compositions and mass densities have an important effect on the calculated dose distribution. The region of interest defined in the treatment plan can be converted into multiple material compositions based on HU values or assigned specified single material composition in NeuMANTA. Different material compositions may cause normal tissue maximum dose rates to differ by more than 10% in biologically equivalent doses and to differ by up to 6% in physically absorbed doses. Although the tumor has a lower proportion of BNCT background dose, the material composition difference may affect the minimum dose of biologically equivalent dose and physically absorbed dose by more than 3%. In addition, the difference in material composition could lead to a change in neutron moderation as well as scattering. Therefore, the material composition has a significant impact on the assessment of normal tissue side effects and tumor control probability. It is essential for accurate dose estimation in BNCT.

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