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Zubair HT, Bradley DA, Khairina MD, Oresegun A, Basaif A, Othman J, Rifiat R, Hamidi F, Rahman L, Ezzadeen A, Ibrahim SA, Mansor S, Alkhorayef M, Abdul-Rashid HA. An extendable optical fibre probe survey meter for naturally occurring radioactive material (NORM) and other weak emitters. Sci Rep 2023; 13:11918. [PMID: 37488183 PMCID: PMC10366106 DOI: 10.1038/s41598-023-39180-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 07/20/2023] [Indexed: 07/26/2023] Open
Abstract
We have developed a radioluminescence-based survey meter for use in industries in which there is involvement in naturally occurring radioactive material (NORM), also in support of those needing to detect other weak emitters of radiation. The functionality of the system confronts particular shortcomings of the handheld survey meters that are currently being made use of. The device couples a LYSO:Ce scintillator with a photodetector via a polymer optical fibre waveguide, allowing for "intrinsically safe" inspection within pipework, separators, valves and other such component pieces. The small-diameter optical fibre probe is electrically passive, immune to electromagnetic interference, and chemically inert. The readout circuit is entirely incorporated within a handheld casing housing a silicon photomultiplier (SiPM) detection circuit and a microprocessor circuit connected to an LCD display. A 15 m long flexible PMMA optical fibre waveguide is butt coupled to an ABS plastic probe that retains the LYSO:Ce scintillator. Initial tests have included the use of lab-based mixed gamma-ray sources, measurements being made in concert with a reference conventional GM survey-meter. Characterization, via NORM sources at a decontamination facility, has shown useful sensitivity, covering the dose-rate range 0.10- to 28 µSv h-1 (R-squared 0.966), extending to 80 µSv/h as demonstrated in use of a Cs-137 source. The system is shown to provide an effective tool for detection of radioactivity within hard to access locations, in particular for sources emitting at low radiation levels, down to values that approach background.
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Affiliation(s)
- H T Zubair
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
- Lumisyns Sdn Bhd, 47600, Subang Jaya, Selangor, Malaysia
| | - D A Bradley
- Centre for Applied Physics and Radiation Technologies, Sunway University, 46150, Petaling Jaya, Malaysia
- School of Mathematics and Physics, University of Surrey, Guildford, GU2 7XH, UK
| | - M D Khairina
- Lumisyns Sdn Bhd, 47600, Subang Jaya, Selangor, Malaysia
| | - Adebiyi Oresegun
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - A Basaif
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - J Othman
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - R Rifiat
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - F Hamidi
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - L Rahman
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - A Ezzadeen
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - S A Ibrahim
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - S Mansor
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - M Alkhorayef
- Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, P.O Box 10219, 11433, Riyadh, Saudi Arabia
| | - H A Abdul-Rashid
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia.
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Mansor S, Alsharief K, Almadany A, Buzaja A, Eltarhoni A. Brachial artery injuries - the impact of the anatomical site of injury on postoperative outcomes. S AFR J SURG 2022; 60:49-54. [PMID: 35451270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND The start of the armed conflicts in Libyan society in 2011 led to a dramatic increase in the incidences of unusual types of brachial artery injuries, which were previously uncommon. In this study, the postoperative outcomes have been compared prospectively between patients who have had injuries at the proximal anatomical half of the brachial artery with those who suffered injuries at the distal anatomical half. METHODS A cohort study was undertaken to compare patients who had an injury at the proximal anatomical half of the brachial artery (considered as the first group) and patients who had an injury at the distal anatomical half of the brachial artery (considered as the second group). This was undertaken to analyse the influence of the anatomical site of injury on the postoperative outcomes in patients who underwent urgent surgical repair procedures at the hospital from February 2011 to December 2016. RESULTS Out of fifty-one patients, 31 (60.8%) patients had gunshot injuries, 12 (23.5%) had explosive injuries, four (7.8%) had stab wounds and four (7.8%) were victims of road traffic accidents. There were 13 (25.5%) patients in the first group and 38 (74.5%) patients in the second group. Three patients (5.9%) had postoperative arterial occlusion due to thrombosis, while two (3.9%) had postoperative graft occlusion due to thrombosis; the other two (3.9%) had compartment syndrome. CONCLUSION Based on the anatomical background, critical limb ischaemia and postoperative ischaemic complications, as well as delayed limb amputation, are more associated with the injuries to the proximal anatomical half of the brachial artery due to poor collateral circulation at this level.
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Affiliation(s)
- S Mansor
- General Surgery Department, Al-Jalaa Teaching Hospital, Benghazi University, Libya and Department of Surgery, Libyan International Medical University, Libya
| | - K Alsharief
- General Surgery Department, Al-Jalaa Teaching Hospital, Benghazi University, Libya
| | - A Almadany
- General Surgery Department, Al-Jalaa Teaching Hospital, Benghazi University, Libya
| | - A Buzaja
- General Surgery Department, Al-Jalaa Teaching Hospital, Benghazi University, Libya
| | - A Eltarhoni
- Department of Family and Community Medicine, Benghazi University, Libya
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Chng JK, Mihir G, Lee Y, Tan C, Mansor S. To evaluate if ultrasound gel or water-based media affects ER/PR staining patterns on breast core biopsy specimens. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction/Objective
IHC staining for biomarkers ER, PR and HER-2 (CerB2) forms an essential component of breast cancer management and prognostication. Staining for these biomarkers is dependent on optimal fixation of the specimen in formalin. Scoring systems employed for ER and PR grade the intensity of the nuclear staining along with the percentage of the cells stained. This study aims to determine if ultrasound gel used during core biopsy as opposed to water affects immunohistochemical staining of biomarkers ER and PR in breast cancer specimens, following an observation that ultrasound gel assisted core biopsies may affect ER/PR nuclear staining scores through excess cytoplasmic staining.
Methods/Case Report
We included a total of 50 cases of invasive breast carcinoma diagnosed on core biopsy from KK Women’s and Children’s Hospital from February 2019 to July 2020. These included 25 cases with gel and 25 cases with water applied to the breast prior to the procedure. All biopsies were optimally fixed in formalin as per recommended latest ASCO/CAP guidelines. The control group included 25 resection cases of invasive breast carcinoma which had neither gel nor water and had been optimally fixed in formalin. Cytoplasmic staining for ER and PR was graded as being present or absent and was compared against the excision specimens (control group) to determine if using the gel was significant in producing cytoplasmic staining. The data was analyzed on SPSS using multiple logistic regression.
Results (if a Case Study enter NA)
Using the gel appeared to be statistically significant in producing cytoplasmic staining for ER (p=0.042) as opposed to using water (p=0.274). For PR staining, both gel-based (p=0.250) and water-based media (p=0.286) were not statistically significant in causing cytoplasmic staining.
Conclusion
The preliminary findings of this small retrospective case-control study gives an insight that gel-based media may have a role in causing cytoplasmic staining for oestrogen receptor in breast cancer biopsy specimens which may interfere with accurate scoring and impact results of external quality assurance schemes to which laboratories subscribe to. However the study is limited by the small sample size and exclusion of any other pre- analytical factors like needle bore or number of cores taken which may have had an impact on the staining.
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Affiliation(s)
- J K Chng
- Pathology, Singapore General Hospital, Singapore, SINGAPORE
| | - G Mihir
- KK Women’s and Children’s Hospital, Singapore, SINGAPORE
| | - Y Lee
- KK Women’s and Children’s Hospital, Singapore, SINGAPORE
| | - C Tan
- KK Women’s and Children’s Hospital, Singapore, SINGAPORE
| | - S Mansor
- KK Women’s and Children’s Hospital, Singapore, SINGAPORE
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Mansor S, Yehye WA, Ariffin A, Rahman NA, Ng SW. Di- n-butylammonium 2-(3,5-di- tert-butyl-4-hydroxybenzylsulfanyl)nicotinate. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o1799. [PMID: 21201778 PMCID: PMC2960651 DOI: 10.1107/s1600536808026202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2008] [Accepted: 08/13/2008] [Indexed: 05/26/2023]
Abstract
The asymmetric unit of the title compound, C8H20N+·C21H26NO3S−, contains two indpendent ion pairs which are disposed about a psuedo-inversion center, generating an ammonium–carboxylate N—H⋯O hydrogen-bonded four-component cluster. In the crystal structure, adjacent clusters are linked by hydroxy–carboxylate O—H⋯O hydrogen bonds, forming a chain.
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Mansor S, Zakaria N, Ariffin A, Ng SW. N-(2-Hydroxy-phen-yl)-4-nitro-phthalimide. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o1770. [PMID: 21201752 PMCID: PMC2960742 DOI: 10.1107/s1600536808025920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2008] [Accepted: 08/11/2008] [Indexed: 11/10/2022]
Abstract
Mol-ecules of the title compound, C(14)H(8)N(2)O(5), are linked by a hydr-oxy-amide O-H⋯O hydrogen bond into a linear chain. The hydr-oxy group is disordered over two positions of the benzene ring in an approximate 0.57:0.43 ratio.
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Affiliation(s)
- Shahirah Mansor
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Mansor S, Yehye WA, Ariffin A, Rahman NA, Ng SW. 2-(3,5-Di-tert-butyl-4-hydroxy-benzyl-sulfan-yl)nicotinic acid. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o1778. [PMID: 21201758 PMCID: PMC2960523 DOI: 10.1107/s1600536808026056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2008] [Accepted: 08/13/2008] [Indexed: 11/26/2022]
Abstract
Two molecules of the title compound, C21H27NO3S, are disposed about a center of inversion, generating an O—H⋯O hydrogen-bonded dimer.
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Affiliation(s)
- Shahirah Mansor
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Liat LB, Fong YL, Krishnansamy M, Ramachandran P, Mansor S. Freshwater snail consumption and angiostrongyliasis in Malaya. Trop Geogr Med 1978; 30:241-6. [PMID: 726037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A survey of the freshwater snails, Pila scutata and Bellamyia ingallsiana, as food consumed by the local population was carried out in Peninsular Malaysia. Of these two species the first is preferred; the sizes favoured are between 25--40 mm. Pila snails were found to be consumed by the three communities, viz. Malay, Chinese and Indian, in different ways. The various methods of preparing the snails for consumption are described. P. scutata is an intermediate host of the rat-lung worm, Angiostrongylus malaysiensis. As this worm presumably is the causative agent of human eosinophilic meningoencephalitis, the eating habits of the three races in consuming the snail in relation to the epidemiology of the disease was also discussed.
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